my_bar.xml //配置进度条的图片 @drawable/ok @drawable/no 为图片保存在drawable文件夹中 布局文件中进度条配置
android:id="@+id/bar" android:layout_width="fill_parent" android:layout_height="wrap_content" android:max="100" style="@android:style/Widget.ProgressBar.Horizontal" /> android:id="@+id/bar2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:max="100" android:progressDrawable="@drawable/my_bar" style="@android:style/Widget.ProgressBar.Horizontal" />
activity中调用
1 public class ProgressBarTest extends Activity 2 { 3 //该程序模拟填充长度为100的数组 4 private int[] data = new int[100]; 5 int hasData = 0; 6 //记录ProgressBar的完成进度 7 int status = 0; 8 @Override 9 public void onCreate(Bundle savedInstanceState)10 {11 super.onCreate(savedInstanceState);12 setContentView(R.layout.main);13 final ProgressBar bar = (ProgressBar) findViewById(R.id.bar);14 final ProgressBar bar2 = (ProgressBar) findViewById(R.id.bar2);15 //创建一个负责更新的进度的Handler16 final Handler mHandler = new Handler()17 {18 @Override19 public void handleMessage(Message msg)20 {21 //表明消息是由该程序发送的。22 if (msg.what == 0x111)23 {24 bar.setProgress(status);25 bar2.setProgress(status);26 }27 }28 };29 //启动线程来执行任务30 new Thread()31 {32 public void run()33 {34 while (status < 100)35 {36 // 获取耗时操作的完成百分比37 status = doWork();38 // 发送消息到Handler39 Message m = new Message();40 m.what = 0x111;41 // 发送消息42 mHandler.sendMessage(m);43 }44 }45 }.start();46 }47 //模拟一个耗时的操作。48 public int doWork()49 {50 //为数组元素赋值51 data[hasData++] = (int)(Math.random() * 100);52 try53 {54 Thread.sleep(100);55 }56 catch (InterruptedException e)57 {58 e.printStackTrace();59 }60 return hasData;61 }62 }