Android 皮膚apk實作換膚

沒有安裝順序，先安裝皮膚後安裝主程式完全可以。

安裝成功之後在程式裡面找不皮膚1/2/3啟動檔案，因為皮膚隻能在主程式中使用。在解除安裝裡面能看到安裝上的皮膚，可以解除安裝掉。

好了來看下主要代碼:

Java代碼  

1. package com.iaiai;
2. import java.util.ArrayList;
3. import java.util.List;
4. import java.util.regex.Matcher;
5. import java.util.regex.Pattern;
6. import android.app.Activity;
7. import android.content.Context;
8. import android.content.pm.PackageInfo;
9. import android.content.pm.PackageManager.NameNotFoundException;
10. import android.os.Bundle;
11. import android.view.View;
12. import android.view.View.OnClickListener;
13. import android.view.ViewGroup.LayoutParams;
14. import android.widget.Button;
15. import android.widget.LinearLayout;
16. public class MainActivity extends Activity {
17.     private ArrayList<PackageInfo> getAllSkin() {
18.         ArrayList<PackageInfo> skinList = new ArrayList<PackageInfo>();
19.         List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
20.         for (PackageInfo p : packs) {
21.             if (isSkinPackage(p.packageName)) {
22.                 skinList.add(p);
23.             }
24.         }
25.         return skinList;
26.     }
27.     private boolean isSkinPackage(String packageName) {
28.         String rex = ”com.iaiai\\w”;
29.         Pattern pattern = Pattern.compile(rex);
30.         Matcher matcher = pattern.matcher(packageName);
31.         return matcher.find();
32.     }
33.     @Override
34.     public void onCreate(Bundle savedInstanceState) {
35.         super.onCreate(savedInstanceState);
36.         setContentView(R.layout.main);
37.         final LinearLayout layout = (LinearLayout) findViewById(R.id.layout);
38.         ((Button) findViewById(R.id.def))
39.                 .setOnClickListener(new OnClickListener() {
40.                     @Override
41.                     public void onClick(View v) {
42.                         layout.setBackgroundDrawable(getResources()
43.                                 .getDrawable(R.drawable.bg));
44.                     }
45.                 });
46.         ArrayList<PackageInfo> skinList = getAllSkin();
47.         for (int i = 0; i < skinList.size(); i++) {
48.             try {
49.                 final Context friendContext = createPackageContext(
50.                         skinList.get(i).packageName,
51.                         Context.CONTEXT_IGNORE_SECURITY);
52.                 Button btn = new Button(this);
53.                 btn.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
54.                         LayoutParams.WRAP_CONTENT));
55.                 btn.setText(friendContext.getText(R.string.app_name));
56.                 btn.setOnClickListener(new OnClickListener() {
57.                     @Override
58.                     public void onClick(View v) {
59.                         layout.setBackgroundDrawable(friendContext
60.                                 .getResources().getDrawable(R.drawable.bg));
61.                     }
62.                 });
63.                 layout.addView(btn);
64.             } catch (NameNotFoundException e) {
65.                 e.printStackTrace();
66.             }
67.         }
68.     }
69. }