1、activity_progressbar.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="两种进度条演示：" /> <ProgressBar android:id="@+id/progressBar_horizontal" style="?android:attr/progressBarStyleHorizontal" android:layout_width="200dp" android:layout_height="wrap_content" android:visibility="gone" /> <ProgressBar android:id="@+id/progressBar_large" style="?android:attr/progressBarStyleLarge" android:layout_width="wrap_content" android:layout_height="wrap_content" android:max="100" android:progress="50" android:secondaryProgress="70" android:visibility="gone" /> <Button android:id="@+id/btn_pb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="开始" /></LinearLayout>2、ProgressbarActivity.java
public class ProgressbarActivity extends Activity {
// 声明progressbar对象 private ProgressBar progressBar_horizontalBar; private ProgressBar progressBar_largeBar; private Button btn_pb; protected static final int GUI_STOP_NOTIFIER = 0X108; protected static final int GUI_THREADING_NOTIFIER = 0X109; public int counter = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 设置窗口模式，因为需要显示进度条在标题栏 requestWindowFeature(Window.FEATURE_PROGRESS); setProgressBarVisibility(true); setContentView(R.layout.activity_progressbar); progressBar_horizontalBar = (ProgressBar) findViewById(R.id.progressBar_horizontal); progressBar_largeBar = (ProgressBar) findViewById(R.id.progressBar_large); btn_pb = (Button) findViewById(R.id.btn_pb); /* * 貌视不明确就是滚动条的当前值自动在最小到最大值之间来回移动，形成这样一个动画效果，这个只是告诉别人“我正在工作”，但不能提示工作进度到哪个阶段 * 。主要是在进行一些无法确定操作时间的任务时作为提示。而“明确”就是根据你的进度可以设置现在的进度值。 */ progressBar_horizontalBar.setIndeterminate(false); progressBar_largeBar.setIndeterminate(false); btn_pb.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { // 设置progressBar为可见状态 progressBar_horizontalBar.setVisibility(View.VISIBLE); progressBar_largeBar.setVisibility(View.VISIBLE); // 设置progressBar的最大值 progressBar_horizontalBar.setMax(100); // 设置ProgressBar的当前值 progressBar_horizontalBar.setProgress(0); progressBar_largeBar.setProgress(0); // 通过线程改变ProgressBar的值 new Thread(new Runnable() { @Override public void run() { for (int i = 0; i < 10; i++) { try { counter = (i + 1) * 20; Thread.sleep(1000); if (i==4) { Message m=new Message(); m.what=ProgressbarActivity.GUI_STOP_NOTIFIER; ProgressbarActivity.this.handler.sendMessage(m); break; }else { Message m=new Message(); m.what=ProgressbarActivity.GUI_THREADING_NOTIFIER; ProgressbarActivity.this.handler.sendMessage(m); } } catch (Exception e) { e.printStackTrace(); } } } }).start(); } }); } Handler handler=new Handler(){ public void handleMessage(Message msg) { switch (msg.what) { case ProgressbarActivity.GUI_STOP_NOTIFIER: progressBar_horizontalBar.setVisibility(View.GONE); progressBar_largeBar.setVisibility(View.GONE); //到达最大值终止线程运行 Thread.currentThread().interrupt(); break; case ProgressbarActivity.GUI_THREADING_NOTIFIER: if (!Thread.currentThread().isInterrupted()) { //改变进度条的值 progressBar_horizontalBar.setProgress(counter); progressBar_largeBar.setProgress(counter); //设置标题栏中前景的一个进度条的进度值 setProgress(counter*100); //设置标题栏中后面的一个进度条进度值 setSecondaryProgress(counter*100); } break; } super.handleMessage(msg); } };}