Android中进度条示例

package com.terry; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.View; import android.view.Window; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ProgressBar; public class progressBarActivity extends Activity { private ProgressBar myBar; private ProgressBar myBar2; private Button myButton; private Handler myHandler; protected static final int GUI_STOP=0x1110; protected static final int GUI_THREADING=0x122; private int counter=0; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_PROGRESS); setProgressBarVisibility(true); setContentView(R.layout.main); /* * 查找对象 */ myBar=(ProgressBar)findViewById(R.id.ProgressBar01); myBar2=(ProgressBar)findViewById(R.id.ProgressBar02); myButton=(Button)findViewById(R.id.Button01); myButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub myBar.setVisibility(View.VISIBLE); myBar2.setVisibility(View.VISIBLE); myBar.setMax(100); myBar.setProgress(0); myBar2.setProgress(0); new Thread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub for(int i=0;i<10;i++) { try { counter=(i+1)*20; Thread.sleep(1000); if(i==4) { Message msg=new Message(); msg.what=GUI_STOP; progressBarActivity.this.myHandler.sendMessage(msg); break; } else { Message msg=new Message(); msg.what=GUI_THREADING; progressBarActivity.this.myHandler.sendMessage(msg); } } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } } } }).start(); } }); myHandler=new Handler() { @Override public void handleMessage(Message msg) { // TODO Auto-generated method stub switch (msg.what) { case GUI_STOP: myBar.setVisibility(View.GONE); myBar2.setVisibility(View.GONE); Thread.currentThread().interrupt(); break; case GUI_THREADING: if(!Thread.currentThread().interrupted()) { myBar.setProgress(counter); myBar2.setProgress(counter); setProgress(counter*100); setSecondaryProgress(counter*100); } break; default: break; } super.handleMessage(msg); } }; } }