android 随机云标签（圆形）
【摘要】
下面是实现的效果图：
这个适合用于选择 用户的一些兴趣标签，个性名片等。
代码：
Activity
package com.dyl.cloudtags; import java.util.ArrayList;import java.util.Arrays;import java.uti...
下面是实现的效果图：
这个适合用于选择 用户的一些兴趣标签，个性名片等。
代码：
Activity
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package com.dyl.cloudtags;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Random;
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import android.app.Activity;
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import android.content.SharedPreferences;
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import android.os.Bundle;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.widget.EditText;
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import android.widget.ImageView;
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import android.widget.TextView;
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import android.widget.Toast;
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public class MainActivity extends Activity {
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private KeywordsFlow keywordsFlow;
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private String[] keywords;
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public static final String SEARCH_HISTORY = "search_history";
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private ArrayList<SearchDataPojo> searchItem;
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private String longhistory;
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private SharedPreferences sp;
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private ArrayList<String> history;
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private EditText world_shopping_search_input;
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private TextView world_city_refresh, clear_history;
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private ImageView toSearch;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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initView();
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initSearchHistory();
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refreshTags();
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}
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private void initView() {
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world_shopping_search_input = (EditText) findViewById(R.id.world_shopping_search_input);
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keywordsFlow = (KeywordsFlow) findViewById(R.id.keywordsflow);
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world_city_refresh = (TextView) findViewById(R.id.world_city_refresh);
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world_city_refresh.setOnClickListener(new OnClickListener() {
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@Override
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public void onClick(View arg0) {
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refreshTags();
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}
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});
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clear_history = (TextView) findViewById(R.id.clear_history);
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clear_history.setOnClickListener(new OnClickListener() {
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@Override
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public void onClick(View arg0) {
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clearSearchHistory();
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}
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});
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toSearch = (ImageView) findViewById(R.id.toSearch);
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toSearch.setOnClickListener(new OnClickListener() {
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@Override
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public void onClick(View arg0) {
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saveSearchHistory();
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refreshTags();
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}
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});
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}
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private void refreshTags() {
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initSearchHistory();
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keywordsFlow.setDuration(800l);
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keywordsFlow.setOnItemClickListener(new OnClickListener() {
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@Override
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public void onClick(View v) {
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String keyword = ((TextView) v).getText().toString();// 获得点击的标签
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world_shopping_search_input.setText(keyword);
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}
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});
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// 添加
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feedKeywordsFlow(keywordsFlow, keywords);
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keywordsFlow.go2Show(KeywordsFlow.ANIMATION_IN);
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}
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private static void feedKeywordsFlow(KeywordsFlow keywordsFlow, String[] arr) {
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Random random = new Random();
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for (int i = 0; i < KeywordsFlow.MAX; i++) {
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int ran = random.nextInt(arr.length);
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String tmp = arr[ran];
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keywordsFlow.feedKeyword(tmp);
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}
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}
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/**
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* 读取历史搜索记录
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*/
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private void initSearchHistory() {
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sp = getSharedPreferences(MainActivity.SEARCH_HISTORY, 0);
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longhistory = sp.getString(MainActivity.SEARCH_HISTORY, "");
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if (!longhistory.equals("")) {
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keywords = longhistory.split(",");
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searchItem = new ArrayList<SearchDataPojo>();
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for (int i = 0; i < keywords.length; i++) {
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searchItem.add(new SearchDataPojo().setContent(keywords[i]));
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}
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} else {// 如果SharedPreferences没有值得话，就显示默认的数据
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keywords = new String[] { "口味虾", "牛蛙", "火锅", "真功夫", "料理",
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"密室逃", "天成房", "波比艾" };
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}
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}
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/*
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* 保存搜索记录
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*/
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private void saveSearchHistory() {
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String text = world_shopping_search_input.getText().toString().trim();
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Toast.makeText(this, text, Toast.LENGTH_LONG).show();
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if (!text.equals("") && text != null) {
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if (text.length() < 1) {
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return;
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}
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sp = getSharedPreferences(SEARCH_HISTORY, 0);
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String longhistory = sp.getString(SEARCH_HISTORY, "");
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String[] tmpHistory = longhistory.split(",");
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history = new ArrayList<String>(Arrays.asList(tmpHistory));
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if (history.size() > 0) {
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int i;
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for (i = 0; i < history.size(); i++) {
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if (text.equals(history.get(i))) {
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history.remove(i);
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break;
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}
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}
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history.add(0, text);
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}
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if (history.size() > 0) {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < history.size(); i++) {
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sb.append(history.get(i) + ",");
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}
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sp.edit().putString(SEARCH_HISTORY, sb.toString()).commit();
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} else {
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sp.edit().putString(SEARCH_HISTORY, text + ",").commit();
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}
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clear_history.setVisibility(View.VISIBLE);
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}
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}
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// 清除历史数据
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private void clearSearchHistory() {
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searchItem.removeAll(searchItem);
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sp.edit().clear().commit();
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Toast.makeText(this, "清除历史记录", Toast.LENGTH_LONG).show();
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}
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}
用于将控件 设置为圆形 的自定义TextView
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package com.dyl.cloudtags;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.graphics.PaintFlagsDrawFilter;
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import android.util.AttributeSet;
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import android.widget.TextView;
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public class CircleView extends TextView {
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private Paint mBgPaint = new Paint();
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PaintFlagsDrawFilter pfd = new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG);
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public CircleView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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// TODO Auto-generated constructor stub
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}
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public CircleView(Context context, AttributeSet attrs) {
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super(context, attrs);
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// TODO Auto-generated constructor stub
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mBgPaint.setColor(Color.WHITE);
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mBgPaint.setAntiAlias(true);
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}
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public CircleView(Context context) {
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super(context);
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// TODO Auto-generated constructor stub
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mBgPaint.setColor(Color.WHITE);
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mBgPaint.setAntiAlias(true);
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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// TODO Auto-generated method stub
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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int measuredWidth = getMeasuredWidth();
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int measuredHeight = getMeasuredHeight();
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int max = Math.max(measuredWidth, measuredHeight);
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setMeasuredDimension(max, max);
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}
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@Override
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public void setBackgroundColor(int color) {
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// TODO Auto-generated method stub
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mBgPaint.setColor(color);
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}
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/**
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* 设置通知个数显示
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* @param text
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*/
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public void setNotifiText(int text){
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// if(text>99){
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// String string = 99+"+";
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// setText(string);
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// return;
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// }
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setText(text+"");
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}
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@Override
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public void draw(Canvas canvas) {
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// TODO Auto-generated method stub
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canvas.setDrawFilter(pfd);
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canvas.drawCircle(getWidth()/2, getHeight()/2, Math.max(getWidth(), getHeight())/2, mBgPaint);
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super.draw(canvas);
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}
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}
自定义布局 用于动态生成多个 控件 核心类
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package com.dyl.cloudtags;
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import java.util.LinkedList;
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import java.util.Random;
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import java.util.Vector;
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import android.content.Context;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.graphics.drawable.GradientDrawable;
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import android.util.AttributeSet;
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import android.view.Gravity;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewTreeObserver.OnGlobalLayoutListener;
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import android.view.animation.AlphaAnimation;
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import android.view.animation.Animation;
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import android.view.animation.Animation.AnimationListener;
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import android.view.animation.AnimationSet;
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import android.view.animation.AnimationUtils;
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import android.view.animation.Interpolator;
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import android.view.animation.ScaleAnimation;
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import android.view.animation.TranslateAnimation;
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import android.widget.FrameLayout;
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public class KeywordsFlow extends FrameLayout implements OnGlobalLayoutListener {
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public static final int IDX_X = 0;
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public static final int IDX_Y = 1;
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public static final int IDX_TXT_LENGTH = 2;
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public static final int IDX_DIS_Y = 3;
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/** 由外至内的动画。 */
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public static final int ANIMATION_IN = 1;
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/** 由内至外的动画。 */
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public static final int ANIMATION_OUT = 2;
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/** 位移动画类型：从外围移动到坐标点。 */
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public static final int OUTSIDE_TO_LOCATION = 1;
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/** 位移动画类型：从坐标点移动到外围。 */
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public static final int LOCATION_TO_OUTSIDE = 2;
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/** 位移动画类型：从中心点移动到坐标点。 */
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public static final int CENTER_TO_LOCATION = 3;
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/** 位移动画类型：从坐标点移动到中心点。 */
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public static final int LOCATION_TO_CENTER = 4;
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public static final long ANIM_DURATION = 800l;
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public static final int MAX = 12;
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public static final int TEXT_SIZE_MAX = 20;
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public static final int TEXT_SIZE_MIN = 10;
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private OnClickListener itemClickListener;
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private static Interpolator interpolator;
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private static AlphaAnimation animAlpha2Opaque;
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private static AlphaAnimation animAlpha2Transparent;
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private static ScaleAnimation animScaleLarge2Normal, animScaleNormal2Large,
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animScaleZero2Normal, animScaleNormal2Zero;
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/** 存储显示的关键字。 */
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private Vector<String> vecKeywords;
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private int width, height;
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/**
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* go2Show()中被赋值为true，标识开发人员触发其开始动画显示。<br/>
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* 本标识的作用是防止在填充keywrods未完成的过程中获取到width和height后提前启动动画。<br/>
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* 在show()方法中其被赋值为false。<br/>
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* 真正能够动画显示的另一必要条件：width 和 height不为0。<br/>
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*/
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private boolean enableShow;
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private Random random;
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private int txtAnimInType, txtAnimOutType;
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/** 最近一次启动动画显示的时间。 */
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private long lastStartAnimationTime;
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/** 动画运行时间。 */
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private long animDuration;
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private Context context;
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public KeywordsFlow(Context context) {
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super(context);
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init();
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}
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public KeywordsFlow(Context context, AttributeSet attrs) {
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super(context, attrs);
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init();
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}
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public KeywordsFlow(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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init();
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}
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private void init() {
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lastStartAnimationTime = 0l;
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animDuration = ANIM_DURATION;
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random = new Random();
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vecKeywords = new Vector<String>(MAX);
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getViewTreeObserver().addOnGlobalLayoutListener(this);
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interpolator = AnimationUtils.loadInterpolator(getContext(),
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android.R.anim.decelerate_interpolator);
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animAlpha2Opaque = new AlphaAnimation(0.0f, 1.0f);
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animAlpha2Transparent = new AlphaAnimation(1.0f, 0.0f);
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animScaleLarge2Normal = new ScaleAnimation(2, 1, 2, 1);
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animScaleNormal2Large = new ScaleAnimation(1, 2, 1, 2);
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animScaleZero2Normal = new ScaleAnimation(0, 1, 0, 1);
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animScaleNormal2Zero = new ScaleAnimation(1, 0, 1, 0);
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}
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public long getDuration() {
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return animDuration;
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}
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public void setDuration(long duration) {
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animDuration = duration;
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}
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public boolean feedKeyword(String keyword) {
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boolean result = false;
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if (vecKeywords.size() < MAX) {
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result = vecKeywords.add(keyword);
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}
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return result;
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}
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/**
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* 开始动画显示。<br/>
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* 之前已经存在的TextView将会显示退出动画。<br/>
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*
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* @return 正常显示动画返回true；反之为false。返回false原因如下：<br/>
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* 1.时间上不允许，受lastStartAnimationTime的制约；<br/>
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* 2.未获取到width和height的值。<br/>
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*/
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public boolean go2Show(int animType) {
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if (System.currentTimeMillis() - lastStartAnimationTime > animDuration) {
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enableShow = true;
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if (animType == ANIMATION_IN) {
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txtAnimInType = OUTSIDE_TO_LOCATION;
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txtAnimOutType = LOCATION_TO_CENTER;
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} else if (animType == ANIMATION_OUT) {
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txtAnimInType = CENTER_TO_LOCATION;
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txtAnimOutType = LOCATION_TO_OUTSIDE;
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}
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disapper();
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boolean result = show();
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return result;
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}
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return false;
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}
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private void disapper() {
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int size = getChildCount();
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for (int i = size - 1; i >= 0; i--) {
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final CircleView txv = (CircleView) getChildAt(i);
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if (txv.getVisibility() == View.GONE) {
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removeView(txv);
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continue;
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}
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FrameLayout.LayoutParams layParams = (LayoutParams) txv
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.getLayoutParams();
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int[] xy = new int[] { layParams.leftMargin, layParams.topMargin,
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txv.getWidth() };
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AnimationSet animSet = getAnimationSet(xy, (width >> 1),
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(height >> 1), txtAnimOutType);
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txv.startAnimation(animSet);
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animSet.setAnimationListener(new AnimationListener() {
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public void onAnimationStart(Animation animation) {
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}
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public void onAnimationRepeat(Animation animation) {
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}
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public void onAnimationEnd(Animation animation) {
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txv.setOnClickListener(null);
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txv.setClickable(false);
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txv.setVisibility(View.GONE);
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}
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});
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}
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}
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private boolean show() {
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if (width > 0 && height > 0 && vecKeywords != null
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&& vecKeywords.size() > 0 && enableShow) {
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enableShow = false;
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lastStartAnimationTime = System.currentTimeMillis();
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int xCenter = width >> 1, yCenter = height >> 1;
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int size = vecKeywords.size();
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int xItem = width / size, yItem = height / size;
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LinkedList<Integer> listX = new LinkedList<Integer>(), listY = new LinkedList<Integer>();
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for (int i = 0; i < size; i++) {
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// 准备随机候选数，分别对应x/y轴位置
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listX.add(i * xItem);
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listY.add(i * yItem + (yItem >> 2));
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}
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LinkedList<CircleView> listTxtTop = new LinkedList<CircleView>();
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LinkedList<CircleView> listTxtBottom = new LinkedList<CircleView>();
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for (int i = 0; i < size; i++) {
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String keyword = vecKeywords.get(i);
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// 随机位置，糙值
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int xy[] = randomXY(random, listX, listY, xItem);
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// 实例化TextView
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final CircleView txv = new CircleView(getContext());
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txv.setBackgroundResource(R.drawable.text_view_border);
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txv.setGravity(Gravity.CENTER);
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txv.setOnClickListener(itemClickListener);
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txv.setText(keyword);
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txv.setTextColor(Color.WHITE);
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txv.setPadding(8, 6, 8, 6);
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txv.setSingleLine(true);
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int r = random.nextInt(256);
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int g= random.nextInt(256);
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int b = random.nextInt(256);
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int mColor = Color.rgb(r, g, b);
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GradientDrawable myGrad = (GradientDrawable)txv.getBackground();
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myGrad.setColor(mColor);
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// txv.setBackgroundColor(mColor);
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// 获取文本长度
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Paint paint = txv.getPaint();
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int strWidth = (int) Math.ceil(paint.measureText(keyword));
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xy[IDX_TXT_LENGTH] = strWidth;
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// 第一次修正:修正x坐标
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if (xy[IDX_X] + strWidth > width - (xItem >> 1)) {
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int baseX = width - strWidth;
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// 减少文本右边缘一样的概率
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xy[IDX_X] = baseX - xItem + random.nextInt(xItem >> 1);
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} else if (xy[IDX_X] == 0) {
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// 减少文本左边缘一样的概率
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xy[IDX_X] = Math.max(random.nextInt(xItem), xItem / 3);
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}
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xy[IDX_DIS_Y] = Math.abs(xy[IDX_Y] - yCenter);
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txv.setTag(xy);
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if (xy[IDX_Y] > yCenter) {
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listTxtBottom.add(txv);
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} else {
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listTxtTop.add(txv);
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}
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}
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attach2Screen(listTxtTop, xCenter, yCenter, yItem);
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attach2Screen(listTxtBottom, xCenter, yCenter, yItem);
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return true;
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}
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return false;
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}
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/** 修正TextView的Y坐标将将其添加到容器上。 */
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private void attach2Screen(LinkedList<CircleView> listTxt, int xCenter,
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int yCenter, int yItem) {
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int size = listTxt.size();
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sortXYList(listTxt, size);
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for (int i = 0; i < size; i++) {
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CircleView txv = listTxt.get(i);
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int[] iXY = (int[]) txv.getTag();
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// 第二次修正:修正y坐标
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int yDistance = iXY[IDX_Y] - yCenter;
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// 对于最靠近中心点的，其值不会大于yItem<br/>
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// 对于可以一路下降到中心点的，则该值也是其应调整的大小<br/>
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int yMove = Math.abs(yDistance);
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inner: for (int k = i - 1; k >= 0; k--) {
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int[] kXY = (int[]) listTxt.get(k).getTag();
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int startX = kXY[IDX_X];
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int endX = startX + kXY[IDX_TXT_LENGTH];
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// y轴以中心点为分隔线，在同一侧
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if (yDistance * (kXY[IDX_Y] - yCenter) > 0) {
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if (isXMixed(startX, endX, iXY[IDX_X], iXY[IDX_X]
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+ iXY[IDX_TXT_LENGTH])) {
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int tmpMove = Math.abs(iXY[IDX_Y] - kXY[IDX_Y]);
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if (tmpMove > yItem) {
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yMove = tmpMove;
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} else if (yMove > 0) {
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// 取消默认值。
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yMove = 0;
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}
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break inner;
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}
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}
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}
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if (yMove > yItem) {
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int maxMove = yMove - yItem;
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int randomMove = random.nextInt(maxMove);
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int realMove = Math.max(randomMove, maxMove >> 1) * yDistance
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/ Math.abs(yDistance);
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iXY[IDX_Y] = iXY[IDX_Y] - realMove;
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iXY[IDX_DIS_Y] = Math.abs(iXY[IDX_Y] - yCenter);
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// 已经调整过前i个需要再次排序
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sortXYList(listTxt, i + 1);
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}
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FrameLayout.LayoutParams layParams = new FrameLayout.LayoutParams(
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FrameLayout.LayoutParams.WRAP_CONTENT,
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FrameLayout.LayoutParams.WRAP_CONTENT);
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layParams.gravity = Gravity.LEFT | Gravity.TOP;
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layParams.leftMargin = iXY[IDX_X];
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layParams.topMargin = iXY[IDX_Y];
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addView(txv, layParams);
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// 动画
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AnimationSet animSet = getAnimationSet(iXY, xCenter, yCenter,
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txtAnimInType);
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txv.startAnimation(animSet);
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}
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}
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public AnimationSet getAnimationSet(int[] xy, int xCenter, int yCenter,
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int type) {
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AnimationSet animSet = new AnimationSet(true);
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animSet.setInterpolator(interpolator);
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if (type == OUTSIDE_TO_LOCATION) {
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animSet.addAnimation(animAlpha2Opaque);
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animSet.addAnimation(animScaleLarge2Normal);
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TranslateAnimation translate = new TranslateAnimation((xy[IDX_X]
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+ (xy[IDX_TXT_LENGTH] >> 1) - xCenter) << 1, 0,
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(xy[IDX_Y] - yCenter) << 1, 0);
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animSet.addAnimation(translate);
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} else if (type == LOCATION_TO_OUTSIDE) {
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animSet.addAnimation(animAlpha2Transparent);
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animSet.addAnimation(animScaleNormal2Large);
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TranslateAnimation translate = new TranslateAnimation(0, (xy[IDX_X]
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+ (xy[IDX_TXT_LENGTH] >> 1) - xCenter) << 1, 0,
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(xy[IDX_Y] - yCenter) << 1);
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animSet.addAnimation(translate);
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} else if (type == LOCATION_TO_CENTER) {
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animSet.addAnimation(animAlpha2Transparent);
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animSet.addAnimation(animScaleNormal2Zero);
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TranslateAnimation translate = new TranslateAnimation(0,
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(-xy[IDX_X] + xCenter), 0, (-xy[IDX_Y] + yCenter));
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animSet.addAnimation(translate);
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} else if (type == CENTER_TO_LOCATION) {
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animSet.addAnimation(animAlpha2Opaque);
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animSet.addAnimation(animScaleZero2Normal);
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TranslateAnimation translate = new TranslateAnimation(
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(-xy[IDX_X] + xCenter), 0, (-xy[IDX_Y] + yCenter), 0);
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animSet.addAnimation(translate);
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}
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animSet.setDuration(animDuration);
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return animSet;
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}
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/**
-
* 根据与中心点的距离由近到远进行冒泡排序。
-
*
-
* @param endIdx
-
* 起始位置。
-
* @param txtArr
-
* 待排序的数组。
-
*
-
*/
-
private void sortXYList(LinkedList<CircleView> listTxt, int endIdx) {
-
for (int i = 0; i < endIdx; i++) {
-
for (int k = i + 1; k < endIdx; k++) {
-
if (((int[]) listTxt.get(k).getTag())[IDX_DIS_Y] < ((int[]) listTxt
-
.get(i).getTag())[IDX_DIS_Y]) {
-
CircleView iTmp = listTxt.get(i);
-
CircleView kTmp = listTxt.get(k);
-
listTxt.set(i, kTmp);
-
listTxt.set(k, iTmp);
-
}
-
}
-
}
-
}
-
-
/** A线段与B线段所代表的直线在X轴映射上是否有交集。 */
-
private boolean isXMixed(int startA, int endA, int startB, int endB) {
-
boolean result = false;
-
if (startB >= startA && startB <= endA) {
-
result = true;
-
} else if (endB >= startA && endB <= endA) {
-
result = true;
-
} else if (startA >= startB && startA <= endB) {
-
result = true;
-
} else if (endA >= startB && endA <= endB) {
-
result = true;
-
}
-
return result;
-
}
-
-
//得到随机坐标
-
private int[] randomXY(Random ran, LinkedList<Integer> listX,
-
LinkedList<Integer> listY, int xItem) {
-
int[] arr = new int[4];
-
arr[IDX_X] = listX.remove(ran.nextInt(listX.size()));
-
arr[IDX_Y] = listY.remove(ran.nextInt(listY.size()));
-
return arr;
-
}
-
-
public void onGlobalLayout() {
-
int tmpW = getWidth();
-
int tmpH = getHeight();
-
if (width != tmpW || height != tmpH) {
-
width = tmpW;
-
height = tmpH;
-
show();
-
}
-
}
-
-
public Vector<String> getKeywords() {
-
return vecKeywords;
-
}
-
-
public void rubKeywords() {
-
vecKeywords.clear();
-
}
-
-
/** 直接清除所有的TextView。在清除之前不会显示动画。 */
-
public void rubAllViews() {
-
removeAllViews();
-
}
-
-
public void setOnItemClickListener(OnClickListener listener) {
-
itemClickListener = listener;
-
}
-
}
-
-
-
package com.dyl.cloudtags;
-
-
-
/**
-
* 搜索记录
-
* @author dengyalan
-
*
-
*/
-
public class SearchDataPojo {
-
-
private String content = "";
-
-
public String getContent() {
-
return content;
-
}
-
-
public SearchDataPojo setContent(String content) {
-
this.content = content;
-
return this;
-
}
-
}
另外如果还有其它问题，可以加入我的qq群：Android开发经验交流群 454430053 互相学习交流。
文章来源: wukong.blog.csdn.net，作者：再见孙悟空_，版权归原作者所有，如需转载，请联系作者。
原文链接：wukong.blog.csdn.net/article/details/49281619
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