Android APK的安裝實例

       打開packages\apps\PackageInstaller下的清單文件

1. <?xml version="1.0" encoding="utf-8"?>  
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"  
3.           package="com.android.packageinstaller">  
4.   
5.     <original-package android:name="com.android.packageinstaller" />  
6.   
7.     <uses-permission android:name="android.permission.INSTALL_PACKAGES" />  
8.     <uses-permission android:name="android.permission.DELETE_PACKAGES" />  
9.     <uses-permission android:name="android.permission.CLEAR_APP_CACHE" />  
10.     <uses-permission android:name="android.permission.READ_PHONE_STATE" />  
11.     <uses-permission android:name="android.permission.CLEAR_APP_USER_DATA" />  
12.     <application android:label="@string/app_name">   
13.         <activity android:name=".PackageInstallerActivity"  
14.                 android:configChanges="orientation|keyboardHidden"  
15.                 android:theme="@style/TallTitleBarTheme">  
16.             <intent-filter>  
17.                 <action android:name="android.intent.action.VIEW" />  
18.                 <category android:name="android.intent.category.DEFAULT" />  
19.                 <data android:scheme="content" />  
20.                 <data android:scheme="file" />  
21.                 <data android:mimeType="application/vnd.android.package-archive" />  
22.             </intent-filter>  
23.         </activity>  
24.         <activity android:name=".InstallAppProgress"  
25.                 android:configChanges="orientation|keyboardHidden"  
26.                 android:theme="@style/TallTitleBarTheme">  
27.         </activity>  
28.         <activity android:name=".UninstallerActivity"  
29.                 android:configChanges="orientation|keyboardHidden"  
30.                 android:theme="@style/TallTitleBarTheme">  
31.             <intent-filter>  
32.                 <action android:name="android.intent.action.VIEW" />  
33.                 <action android:name="android.intent.action.DELETE" />  
34.                 <category android:name="android.intent.category.DEFAULT" />  
35.                 <data android:scheme="package" />  
36.             </intent-filter>  
37.         </activity>  
38.         <activity android:name=".UninstallAppProgress"  
39.                 android:configChanges="orientation|keyboardHidden"  
40.                 android:theme="@style/TallTitleBarTheme">  
41.         </activity>  
42.     </application>  
43. </manifest>   

       項目布局：

1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
2.     xmlns:tools="http://schemas.android.com/tools"  
3.     android:layout_width="match_parent"  
4.     android:layout_height="match_parent"  
5.     android:orientation="vertical"  
6.     tools:context=".MainActivity" >  
7.   
8.     <EditText  
9.         android:id="@+id/et_path"  
10.         android:layout_width="fill_parent"  
11.         android:layout_height="wrap_content"  
12.         android:text="請輸入apk的路徑" />  
13.     <Button  
14.         android:onClick="click"  
15.          android:layout_width="fill_parent"  
16.         android:layout_height="wrap_content"  
17.         android:text="安裝"            
18.         />    
19. </LinearLayout>  

       邏輯代碼如下：

1. public class MainActivity extends Activity {  
2.   
3.     private EditText et_path;  
4.   
5.     @Override  
6.     protected void onCreate(Bundle savedInstanceState) {  
7.         super.onCreate(savedInstanceState);  
8.         setContentView(R.layout.activity_main);  
9.   
10.         et_path = (EditText) findViewById(R.id.et_path);  
11.     }  
12.   
13.     public void click(View view) {  
14.         String path = et_path.getText().toString().trim();  
15.         /* 
16.          * <action android:name="android.intent.action.VIEW" /> <category 
17.          * android:name="android.intent.category.DEFAULT" /> <data 
18.          * android:scheme="content" /> <data android:scheme="file" /> <data 
19.          * android:mimeType="application/vnd.android.package-archive" /> 
20.          */  
21.         Intent intent = new Intent();  
22.         intent.setAction("android.intent.action.VIEW");  
23.         intent.addCategory("android.intent.category.DEFAULT");  
24.         intent.setDataAndType(Uri.fromFile(new File(path)), "application/vnd.android.package-archive");  
25.         startActivity(intent);  
26.     }  
27. }  

      首先需要AndroidManifest.xml中加入安裝程序權限:

      <!-- 安裝程序權限 -->

      <uses-permission android:name="android.permission.INSTALL_PACKAGES"/>

      接著將一個名為girl.apk的apk導入sdcard，然後運行項目效果如下

       點擊安裝