Android 皮肤apk实现换肤

没有安装顺序，先安装皮肤后安装主程序完全可以。
安装成功之后在程序里面找不皮肤1/2/3启动文件，因为皮肤只能在主程序中使用。在卸载里面能看到安装上的皮肤，可以卸载掉。

好了来看下主要代码:

Java代码  

1. package com.iaiai;
2. 
   
3. import java.util.ArrayList;
4. import java.util.List;
5. import java.util.regex.Matcher;
6. import java.util.regex.Pattern;
7. 
   
8. import android.app.Activity;
9. import android.content.Context;
10. import android.content.pm.PackageInfo;
11. import android.content.pm.PackageManager.NameNotFoundException;
12. import android.os.Bundle;
13. import android.view.View;
14. import android.view.View.OnClickListener;
15. import android.view.ViewGroup.LayoutParams;
16. import android.widget.Button;
17. import android.widget.LinearLayout;
18. 
    
19. /**
20.  *
21.  * <p>
22.  * Title: MainActivity.java
23.  * </p>
24.  * <p>
25.  * E-Mail: 176291935@qq.com
26.  * </p>
27.  * <p>
28.  * QQ: 176291935
29.  * </p>
30.  * <p>
31.  * Http: iaiai.iteye.com
32.  * </p>
33.  * <p>
34.  * Create time: 2011-10-18
35.  * </p>
36.  *
37.  * @author 丸子
38.  * @version 0.0.1
39.  */
40. public class MainActivity extends Activity {
41. 
    
42.     private ArrayList<PackageInfo> getAllSkin() {
43.         ArrayList<PackageInfo> skinList = new ArrayList<PackageInfo>();
44.         List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
45.         for (PackageInfo p : packs) {
46.             if (isSkinPackage(p.packageName)) {
47.                 skinList.add(p);
48.             }
49.         }
50.         return skinList;
51.     }
52. 
    
53.     private boolean isSkinPackage(String packageName) {
54.         String rex = ”com.iaiai\\w”;
55.         Pattern pattern = Pattern.compile(rex);
56.         Matcher matcher = pattern.matcher(packageName);
57.         return matcher.find();
58.     }
59. 
    
60.     @Override
61.     public void onCreate(Bundle savedInstanceState) {
62.         super.onCreate(savedInstanceState);
63.         setContentView(R.layout.main);
64. 
    
65.         final LinearLayout layout = (LinearLayout) findViewById(R.id.layout);
66. 
    
67.         ((Button) findViewById(R.id.def))
68.                 .setOnClickListener(new OnClickListener() {
69.                     @Override
70.                     public void onClick(View v) {
71.                         layout.setBackgroundDrawable(getResources()
72.                                 .getDrawable(R.drawable.bg));
73.                     }
74.                 });
75. 
    
76.         ArrayList<PackageInfo> skinList = getAllSkin();
77. 
    
78.         for (int i = 0; i < skinList.size(); i++) {
79.             try {
80.                 final Context friendContext = createPackageContext(
81.                         skinList.get(i).packageName,
82.                         Context.CONTEXT_IGNORE_SECURITY);
83. 
    
84.                 Button btn = new Button(this);
85.                 btn.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
86.                         LayoutParams.WRAP_CONTENT));
87.                 btn.setText(friendContext.getText(R.string.app_name));
88.                 btn.setOnClickListener(new OnClickListener() {
89.                     @Override
90.                     public void onClick(View v) {
91.                         layout.setBackgroundDrawable(friendContext
92.                                 .getResources().getDrawable(R.drawable.bg));
93.                     }
94.                 });
95. 
    
96.                 layout.addView(btn);
97.             } catch (NameNotFoundException e) {
98.                 e.printStackTrace();
99.             }
100.         }
101.     }
102. 
     
103. }