红色小圆点消息提示之BadgeView
【摘要】
在app中随处可见具有中国红特色的小圆点，比如电商项目的购物车、通讯项目的消息列表等等。
第三方控件BadgeView可以简单粗暴实现。
效果图：
1.布局
2.初始化布局
textView1 = (TextView) findViewById(R.id.textView1);textView2 = (TextV...
在app中随处可见具有中国红特色的小圆点，比如电商项目的购物车、通讯项目的消息列表等等。
第三方控件BadgeView可以简单粗暴实现。
效果图：
1.布局
2.初始化布局
-
textView1 = (TextView) findViewById(R.id.textView1);
-
textView2 = (TextView) findViewById(R.id.textView2);
-
imageView = (ImageView) findViewById(R.id.imageView);
-
//初始化BadgeView，1.上下文，2.显示对象
-
final BadgeView badgeTextView1 = new BadgeView(this, textView1);
-
BadgeView badgeTextView2 = new BadgeView(this, textView2);
-
BadgeView badgeImageView = new BadgeView(this, imageView);
4.设置BadgeView属性
-
badgeTextView1.setBadgeBackgroundColor(Color.RED);//设置背景颜色
-
badgeTextView1.setBadgeMargin(5);//设置margin
-
badgeTextView1.setBadgePosition(BadgeView.POSITION_TOP_RIGHT);//设置显示的位置
5.设置显示内容
-
count = 1;
-
if (count > 0) {
-
if (count < 99) {
-
badgeTextView1.setText(count + "");//设置显示的内容
-
} else {
-
badgeTextView1.setText("99+");
-
}
-
badgeTextView1.setTextSize(10);//设置字体大小
-
badgeTextView1.setTextColor(Color.WHITE);//设置字体颜色
-
badgeTextView1.show();//显示
-
} else {
-
badgeTextView1.hide();//隐藏
-
}
6.设置点击（强迫症的必须点击消失。。。）
-
//设置点击
-
badgeTextView1.setOnClickListener(new View.OnClickListener() {
-
@Override
-
public void onClick(View v) {
-
// 1
-
// 设置进入的移动动画，设置了插值器，可以实现颤动的效果
-
TranslateAnimation anim1 = new TranslateAnimation(0, 0, 0, 0);
-
anim1.setInterpolator(new BounceInterpolator());
-
// 设置动画的持续时间
-
anim1.setDuration(500);
-
// 设置退出的移动动画
-
TranslateAnimation anim2 = new TranslateAnimation(0, 0, 0, 0);
-
anim2.setDuration(500);
-
badgeTextView1.toggle(anim1, anim2);
-
// 2
-
//badgeTextView1.toggle(true);
-
// 3
-
//badgeTextView1.hide();
-
}
-
});
7.BadgeView
可copy直接用，再加一个attrs.xml文件
-
<?xml version="1.0" encoding="utf-8"?>
-
<resources>
-
-
<declare-styleable name="CircleImageView">
-
<attr name="border_width" format="dimension"/>
-
<attr name="border_color" format="color"/>
-
</declare-styleable>
-
-
</resources>
-
package com.yechaoa.badgeviewdemo;
-
-
import android.content.Context;
-
import android.content.res.Resources;
-
import android.graphics.Color;
-
import android.graphics.Typeface;
-
import android.graphics.drawable.ShapeDrawable;
-
import android.graphics.drawable.shapes.RoundRectShape;
-
import android.util.AttributeSet;
-
import android.util.TypedValue;
-
import android.view.Gravity;
-
import android.view.View;
-
import android.view.ViewGroup;
-
import android.view.ViewGroup.LayoutParams;
-
import android.view.ViewParent;
-
import android.view.animation.AccelerateInterpolator;
-
import android.view.animation.AlphaAnimation;
-
import android.view.animation.Animation;
-
import android.view.animation.DecelerateInterpolator;
-
import android.widget.FrameLayout;
-
import android.widget.TabWidget;
-
import android.widget.TextView;
-
-
/**
-
* A simple text label view that can be applied as a "badge" to any given {@link View}.
-
* This class is intended to be instantiated at runtime rather than included in XML layouts.
-
*
-
* @author Jeff Gilfelt
-
*/
-
public class BadgeView extends TextView {
-
-
public static final int POSITION_TOP_LEFT = 1;
-
public static final int POSITION_TOP_RIGHT = 2;
-
public static final int POSITION_BOTTOM_LEFT = 3;
-
public static final int POSITION_BOTTOM_RIGHT = 4;
-
public static final int POSITION_CENTER = 5;
-
-
private static final int DEFAULT_MARGIN_DIP = 5;
-
private static final int DEFAULT_LR_PADDING_DIP = 5;
-
private static final int DEFAULT_CORNER_RADIUS_DIP = 8;
-
private static final int DEFAULT_POSITION = POSITION_TOP_RIGHT;
-
private static final int DEFAULT_BADGE_COLOR = Color.parseColor("#CCFF0000"); //Color.RED;
-
private static final int DEFAULT_TEXT_COLOR = Color.WHITE;
-
-
private static Animation fadeIn;
-
private static Animation fadeOut;
-
-
private Context context;
-
private View target;
-
-
private int badgePosition;
-
private int badgeMarginH;
-
private int badgeMarginV;
-
private int badgeColor;
-
-
private boolean isShown;
-
-
private ShapeDrawable badgeBg;
-
-
private int targetTabIndex;
-
-
public BadgeView(Context context) {
-
this(context, (AttributeSet) null, android.R.attr.textViewStyle);
-
}
-
-
public BadgeView(Context context, AttributeSet attrs) {
-
this(context, attrs, android.R.attr.textViewStyle);
-
}
-
-
/**
-
* Constructor -
-
*
-
* create a new BadgeView instance attached to a target {@link View}.
-
*
-
* @param context context for this view.
-
* @param target the View to attach the badge to.
-
*/
-
public BadgeView(Context context, View target) {
-
this(context, null, android.R.attr.textViewStyle, target, 0);
-
}
-
-
/**
-
* Constructor -
-
*
-
* create a new BadgeView instance attached to a target {@link TabWidget}
-
* tab at a given index.
-
*
-
* @param context context for this view.
-
* @param target the TabWidget to attach the badge to.
-
* @param index the position of the tab within the target.
-
*/
-
public BadgeView(Context context, TabWidget target, int index) {
-
this(context, null, android.R.attr.textViewStyle, target, index);
-
}
-
-
public BadgeView(Context context, AttributeSet attrs, int defStyle) {
-
this(context, attrs, defStyle, null, 0);
-
}
-
-
public BadgeView(Context context, AttributeSet attrs, int defStyle, View target, int tabIndex) {
-
super(context, attrs, defStyle);
-
init(context, target, tabIndex);
-
}
-
-
private void init(Context context, View target, int tabIndex) {
-
-
this.context = context;
-
this.target = target;
-
this.targetTabIndex = tabIndex;
-
-
// apply defaults
-
badgePosition = DEFAULT_POSITION;
-
badgeMarginH = dipToPixels(DEFAULT_MARGIN_DIP);
-
badgeMarginV = badgeMarginH;
-
badgeColor = DEFAULT_BADGE_COLOR;
-
-
setTypeface(Typeface.DEFAULT_BOLD);
-
int paddingPixels = dipToPixels(DEFAULT_LR_PADDING_DIP);
-
setPadding(paddingPixels, 0, paddingPixels, 0);
-
setTextColor(DEFAULT_TEXT_COLOR);
-
-
fadeIn = new AlphaAnimation(0, 1);
-
fadeIn.setInterpolator(new DecelerateInterpolator());
-
fadeIn.setDuration(200);
-
-
fadeOut = new AlphaAnimation(1, 0);
-
fadeOut.setInterpolator(new AccelerateInterpolator());
-
fadeOut.setDuration(200);
-
-
isShown = false;
-
-
if (this.target != null) {
-
applyTo(this.target);
-
} else {
-
show();
-
}
-
-
}
-
-
private void applyTo(View target) {
-
-
LayoutParams lp = target.getLayoutParams();
-
ViewParent parent = target.getParent();
-
FrameLayout container = new FrameLayout(context);
-
-
if (target instanceof TabWidget) {
-
-
// set target to the relevant tab child container
-
target = ((TabWidget) target).getChildTabViewAt(targetTabIndex);
-
this.target = target;
-
-
((ViewGroup) target).addView(container,
-
new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
-
-
this.setVisibility(View.GONE);
-
container.addView(this);
-
-
} else {
-
-
// TODO verify that parent is indeed a ViewGroup
-
ViewGroup group = (ViewGroup) parent;
-
int index = group.indexOfChild(target);
-
-
group.removeView(target);
-
group.addView(container, index, lp);
-
-
container.addView(target);
-
-
this.setVisibility(View.GONE);
-
container.addView(this);
-
-
group.invalidate();
-
-
}
-
-
}
-
-
/**
-
* Make the badge visible in the UI.
-
*
-
*/
-
public void show() {
-
show(false, null);
-
}
-
-
/**
-
* Make the badge visible in the UI.
-
*
-
* @param animate flag to apply the default fade-in animation.
-
*/
-
public void show(boolean animate) {
-
show(animate, fadeIn);
-
}
-
-
/**
-
* Make the badge visible in the UI.
-
*
-
* @param anim Animation to apply to the view when made visible.
-
*/
-
public void show(Animation anim) {
-
show(true, anim);
-
}
-
-
/**
-
* Make the badge non-visible in the UI.
-
*
-
*/
-
public void hide() {
-
hide(false, null);
-
}
-
-
/**
-
* Make the badge non-visible in the UI.
-
*
-
* @param animate flag to apply the default fade-out animation.
-
*/
-
public void hide(boolean animate) {
-
hide(animate, fadeOut);
-
}
-
-
/**
-
* Make the badge non-visible in the UI.
-
*
-
* @param anim Animation to apply to the view when made non-visible.
-
*/
-
public void hide(Animation anim) {
-
hide(true, anim);
-
}
-
-
/**
-
* Toggle the badge visibility in the UI.
-
*
-
*/
-
public void toggle() {
-
toggle(false, null, null);
-
}
-
-
/**
-
* Toggle the badge visibility in the UI.
-
*
-
* @param animate flag to apply the default fade-in/out animation.
-
*/
-
public void toggle(boolean animate) {
-
toggle(animate, fadeIn, fadeOut);
-
}
-
-
/**
-
* Toggle the badge visibility in the UI.
-
*
-
* @param animIn Animation to apply to the view when made visible.
-
* @param animOut Animation to apply to the view when made non-visible.
-
*/
-
public void toggle(Animation animIn, Animation animOut) {
-
toggle(true, animIn, animOut);
-
}
-
-
private void show(boolean animate, Animation anim) {
-
if (getBackground() == null) {
-
if (badgeBg == null) {
-
badgeBg = getDefaultBackground();
-
}
-
setBackgroundDrawable(badgeBg);
-
}
-
applyLayoutParams();
-
-
if (animate) {
-
this.startAnimation(anim);
-
}
-
this.setVisibility(View.VISIBLE);
-
isShown = true;
-
}
-
-
private void hide(boolean animate, Animation anim) {
-
this.setVisibility(View.GONE);
-
if (animate) {
-
this.startAnimation(anim);
-
}
-
isShown = false;
-
}
-
-
private void toggle(boolean animate, Animation animIn, Animation animOut) {
-
if (isShown) {
-
hide(animate && (animOut != null), animOut);
-
} else {
-
show(animate && (animIn != null), animIn);
-
}
-
}
-
-
/**
-
* Increment the numeric badge label. If the current badge label cannot be converted to
-
* an integer value, its label will be set to "0".
-
*
-
* @param offset the increment offset.
-
*/
-
public int increment(int offset) {
-
CharSequence txt = getText();
-
int i;
-
if (txt != null) {
-
try {
-
i = Integer.parseInt(txt.toString());
-
} catch (NumberFormatException e) {
-
i = 0;
-
}
-
} else {
-
i = 0;
-
}
-
i = i + offset;
-
setText(String.valueOf(i));
-
return i;
-
}
-
-
/**
-
* Decrement the numeric badge label. If the current badge label cannot be converted to
-
* an integer value, its label will be set to "0".
-
*
-
* @param offset the decrement offset.
-
*/
-
public int decrement(int offset) {
-
return increment(-offset);
-
}
-
-
private ShapeDrawable getDefaultBackground() {
-
-
int r = dipToPixels(DEFAULT_CORNER_RADIUS_DIP);
-
float[] outerR = new float[] {r, r, r, r, r, r, r, r};
-
-
RoundRectShape rr = new RoundRectShape(outerR, null, null);
-
ShapeDrawable drawable = new ShapeDrawable(rr);
-
drawable.getPaint().setColor(badgeColor);
-
-
return drawable;
-
-
}
-
-
private void applyLayoutParams() {
-
-
FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
-
-
switch (badgePosition) {
-
case POSITION_TOP_LEFT:
-
lp.gravity = Gravity.LEFT | Gravity.TOP;
-
lp.setMargins(badgeMarginH, badgeMarginV, 0, 0);
-
break;
-
case POSITION_TOP_RIGHT:
-
lp.gravity = Gravity.RIGHT | Gravity.TOP;
-
lp.setMargins(0, badgeMarginV, badgeMarginH, 0);
-
break;
-
case POSITION_BOTTOM_LEFT:
-
lp.gravity = Gravity.LEFT | Gravity.BOTTOM;
-
lp.setMargins(badgeMarginH, 0, 0, badgeMarginV);
-
break;
-
case POSITION_BOTTOM_RIGHT:
-
lp.gravity = Gravity.RIGHT | Gravity.BOTTOM;
-
lp.setMargins(0, 0, badgeMarginH, badgeMarginV);
-
break;
-
case POSITION_CENTER:
-
lp.gravity = Gravity.CENTER;
-
lp.setMargins(0, 0, 0, 0);
-
break;
-
default:
-
break;
-
}
-
-
setLayoutParams(lp);
-
-
}
-
-
/**
-
* Returns the target View this badge has been attached to.
-
*
-
*/
-
public View getTarget() {
-
return target;
-
}
-
-
/**
-
* Is this badge currently visible in the UI?
-
*
-
*/
-
@Override
-
public boolean isShown() {
-
return isShown;
-
}
-
-
/**
-
* Returns the positioning of this badge.
-
*
-
* one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT, POSITION_BOTTOM_LEFT, POSITION_BOTTOM_RIGHT, POSTION_CENTER.
-
*
-
*/
-
public int getBadgePosition() {
-
return badgePosition;
-
}
-
-
/**
-
* Set the positioning of this badge.
-
*
-
* @param layoutPosition one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT, POSITION_BOTTOM_LEFT, POSITION_BOTTOM_RIGHT, POSTION_CENTER.
-
*
-
*/
-
public void setBadgePosition(int layoutPosition) {
-
this.badgePosition = layoutPosition;
-
}
-
-
/**
-
* Returns the horizontal margin from the target View that is applied to this badge.
-
*
-
*/
-
public int getHorizontalBadgeMargin() {
-
return badgeMarginH;
-
}
-
-
/**
-
* Returns the vertical margin from the target View that is applied to this badge.
-
*
-
*/
-
public int getVerticalBadgeMargin() {
-
return badgeMarginV;
-
}
-
-
/**
-
* Set the horizontal/vertical margin from the target View that is applied to this badge.
-
*
-
* @param badgeMargin the margin in pixels.
-
*/
-
public void setBadgeMargin(int badgeMargin) {
-
this.badgeMarginH = badgeMargin;
-
this.badgeMarginV = badgeMargin;
-
}
-
-
/**
-
* Set the horizontal/vertical margin from the target View that is applied to this badge.
-
*
-
* @param horizontal margin in pixels.
-
* @param vertical margin in pixels.
-
*/
-
public void setBadgeMargin(int horizontal, int vertical) {
-
this.badgeMarginH = horizontal;
-
this.badgeMarginV = vertical;
-
}
-
-
/**
-
* Returns the color value of the badge background.
-
*
-
*/
-
public int getBadgeBackgroundColor() {
-
return badgeColor;
-
}
-
-
/**
-
* Set the color value of the badge background.
-
*
-
* @param badgeColor the badge background color.
-
*/
-
public void setBadgeBackgroundColor(int badgeColor) {
-
this.badgeColor = badgeColor;
-
badgeBg = getDefaultBackground();
-
}
-
-
private int dipToPixels(int dip) {
-
Resources r = getResources();
-
float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics());
-
return (int) px;
-
}
-
-
}
BadgeView下载：https://github.com/stefanjauker/BadgeView
文章来源: blog.csdn.net，作者：yechaoa，版权归原作者所有，如需转载，请联系作者。
原文链接：blog.csdn.net/yechaoa/article/details/53236418
【版权声明】本文为华为云社区用户转载文章，如果您发现本社区中有涉嫌抄袭的内容，欢迎发送邮件进行举报，并提供相关证据，一经查实，本社区将立刻删除涉嫌侵权内容，举报邮箱：
cloudbbs@huaweicloud.com
- 点赞
- 收藏
- 关注作者
评论（0）