android ProgressBar 使用方法

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <ProgressBar
    android:id="@+id/progress1"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:visibility="gone"
    />
    <ProgressBar
    android:id="@+id/progress2"
    style="?android:attr/progressBarStyle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:visibility="gone"
    />
   <Button
   android:id="@+id/load"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="快進"
   />
</LinearLayout>View Code

 1 setContentView(R.layout.progressbar_1);
 2             setTitle("進度條");
 3             first = (ProgressBar)findViewById(R.id.progress1);
 4             second = (ProgressBar)findViewById(R.id.progress2);
 5             load = (Button)findViewById(R.id.load);
 6             load.setOnClickListener(new Button.OnClickListener(){
 7 
 8                 @Override
 9 publicvoid onClick(View v) {
10 if(i==0){
11                         first.setVisibility(ProgressBar.VISIBLE);
12                         second.setVisibility(ProgressBar.VISIBLE);
13                     }elseif(i <100){
14                         first.setProgress(i);
15                         first.setSecondaryProgress(i+10);
16                     }else{
17                         first.setVisibility(ProgressBar.GONE);
18                         second.setVisibility(ProgressBar.GONE);
19                     }
20                     i = i +10;
21                 }    
22             });