1 package com.example.helloworld;
2
3 import android.app.Activity;
4 import android.os.Bundle;
5 import android.view.View;
6 import android.view.View.OnClickListener;
7 import android.widget.Button;
8 import android.widget.ProgressBar;
9
10 /**
11 * 常用控件三 ProgressBar ListView
12 *
13 * @author David
14 *
15 */
16 public class TenLessonDemo1 extends Activity {
17
18 private ProgressBar firstBar = null;
19 private ProgressBar secondBar = null;
20 private Button myButton = null;
21 private int i = 0;
22
23 @Override
24 protected void onCreate(Bundle savedInstanceState) {
25 // TODO Auto-generated method stub
26 super.onCreate(savedInstanceState);
27 this.setContentView(R.layout.tenone);
28 firstBar = (ProgressBar) findViewById(R.id.firstBar);
29 secondBar = (ProgressBar) findViewById(R.id.secondBar);
30 myButton = (Button) findViewById(R.id.myButton);
31 myButton.setOnClickListener(new ButtonListener());
32 System.out.println(firstBar.getMax());
33 }
34
35 class ButtonListener implements OnClickListener {
36
37 public void onClick(View arg0) {
38 // TODO Auto-generated method stub
39 if (i == 0) {
40 firstBar.setVisibility(View.VISIBLE);//设置进度条处于可见状态
41 secondBar.setVisibility(View.VISIBLE);
42 } else if (i < firstBar.getMax()) {
43 firstBar.setProgress(i);//设置进度条的当前值
44 firstBar.setSecondaryProgress(i + 10);//进度条的第二颜色
45 secondBar.setProgress(i);//这样做是没有作用的，因为默认的进度条是无法显示进行的状态的
46 } else {
47 firstBar.setVisibility(View.GONE);
48 secondBar.setVisibility(View.GONE);//设置进度条处于不可见状态
49
50 }
51 i = i + 10;
52 }
53 }
54 }
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
2 android:layout_width="fill_parent"
3 android:layout_height="fill_parent"
4 android:orientation="vertical" >
5
6 <TextView
7 android:id="@+id/textView1"
8 android:layout_width="fill_parent"
9 android:layout_height="wrap_content"
10 android:text="hello" />
11
12 <ProgressBar
13 android:id="@+id/firstBar"
14 style="?android:attr/progressBarStyleHorizontal"
15 android:layout_width="200dp"
16 android:layout_height="wrap_content"
17 android:max="200"
18 android:visibility="gone" />
19
20 <ProgressBar
21 android:id="@+id/secondBar"
22 style="?android:attr/progressBarStyle"
23 android:layout_width="wrap_content"
24 android:layout_height="wrap_content"
25 android:visibility="gone" />
26
27 <Button
28 android:id="@+id/myButton"
29 android:layout_width="wrap_content"
30 android:layout_height="wrap_content"
31 android:text="确定" />
32
33 </LinearLayout>
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顺势而为