Android学习笔记05：ProgressBar的使用

[Android开发视频教学].01_13_Android常见控件（三）之一

学习使用ProgressBar

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world"
        tools:context=".Activity08" />

    <ProgressBar
        android:id="@+id/progressBar1"
        style="@android:style/Widget.ProgressBar.Small"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:visibility="gone" />

    <ProgressBar
        android:id="@+id/progressBar2"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:visibility="gone" />

    <Button
        android:id="@+id/button"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/button" />

</LinearLayout>

style="?android:attr/progressBarStyleHorizontal"

style="@android:style/Widget.ProgressBar.Horizontal"

package fengda.android08;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;

public class Activity08 extends Activity {

	private ProgressBar progressBar1;
	private ProgressBar progressBar2;
	private Button button;
	private int i =0;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_activity08);
        progressBar1 = (ProgressBar) findViewById(R.id.progressBar1);
        progressBar2 = (ProgressBar) findViewById(R.id.progressBar2);
        button = (Button) findViewById(R.id.button);;
        button.setOnClickListener( new ButtonOnClickListener());
    }

    class ButtonOnClickListener implements OnClickListener {

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			if (i==0){
				progressBar1.setVisibility(View.VISIBLE);
				progressBar2.setVisibility(View.VISIBLE);
			} else if(i<100){
				progressBar1.setProgress(i);
				progressBar2.setProgress(i);
				progressBar2.setSecondaryProgress(i+10);
			} else {
				progressBar1.setVisibility(View.GONE);
				progressBar2.setVisibility(View.GONE);
			}
			i = i+10;
		}
    	
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_activity08, menu);
        return true;
    }
}

文章来源: blog.csdn.net，作者：fengda2870，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/fengda2870/article/details/8160358