android卸载程序代码

android卸载程序代码  

2011-11-13 13:37:10|  分类：android |  标签：android  |字号大中小 订阅

安装：

Java代码  

1. String str = "/CanavaCancel.apk";   
2. String fileName = Environment.getExternalStorageDirectory() + str;   
3. Intent intent = new Intent(Intent.ACTION_VIEW);   
4.  intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive");   
5. startActivity(intent);  

 

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

Java代码  

1. Uri packageURI = Uri.parse("package:com.demo.CanavaCancel");     
2. Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);     
3. startActivity(uninstallIntent);  

 Environment拥有一些可以获取环境变量的方法 

package:com.demo.CanavaCancel 这个形式是 package:程序完整的路径 (包名+程序名).

下载apk程序代码：

Java代码  

1. protected File downLoadFile(String httpUrl) {  
2.                 // TODO Auto-generated method stub  
3.                 final String fileName = "updata.apk";  
4.                 File tmpFile = new File("/sdcard/update");  
5.                 if (!tmpFile.exists()) {  
6.                         tmpFile.mkdir();  
7.                 }  
8.                 final File file = new File("/sdcard/update/" + fileName);  
9.   
10.                 try {  
11.                         URL url = new URL(httpUrl);  
12.                         try {  
13.                                 HttpURLConnection conn = (HttpURLConnection) url  
14.                                                 .openConnection();  
15.                                 InputStream is = conn.getInputStream();  
16.                                 FileOutputStream fos = new FileOutputStream(file);  
17.                                 byte[] buf = new byte[256];  
18.                                 conn.connect();  
19.                                 double count = 0;  
20.                                 if (conn.getResponseCode() >= 400) {  
21.                                         Toast.makeText(Main.this, "连接超时", Toast.LENGTH_SHORT)  
22.                                                         .show();  
23.                                 } else {  
24.                                         while (count <= 100) {  
25.                                                 if (is != null) {  
26.                                                         int numRead = is.read(buf);  
27.                                                         if (numRead <= 0) {  
28.                                                                 break;  
29.                                                         } else {  
30.                                                                 fos.write(buf, 0, numRead);  
31.                                                         }  
32.   
33.                                                 } else {  
34.                                                         break;  
35.                                                 }  
36.   
37.                                         }  
38.                                 }  
39.   
40.                                 conn.disconnect();  
41.                                 fos.close();  
42.                                 is.close();  
43.                         } catch (IOException e) {  
44.                                 // TODO Auto-generated catch block  
45.   
46.                                 e.printStackTrace();  
47.                         }  
48.                 } catch (MalformedURLException e) {  
49.                         // TODO Auto-generated catch block  
50.   
51.                         e.printStackTrace();  
52.                 }  
53.   
54.                 return file;  
55.         }  

 

打开APK程序代码：

Java代码  

1. private void openFile(File file) {  
2.                 // TODO Auto-generated method stub  
3.                 Log.e("OpenFile", file.getName());  
4.                 Intent intent = new Intent();  
5.                 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  
6.                 intent.setAction(android.content.Intent.ACTION_VIEW);  
7.                 intent.setDataAndType(Uri.fromFile(file),  
8.                                 "application/vnd.android.package-archive");  
9.                 startActivity(intent);  
10.         }