静默安装

btn_backinstall.setOnClickListener(new OnClickListener() {
06	             
07	            @Override
08	            public void onClick(View v) {
09	                //文件时已经存在sd卡中了，也可以先从网络中下载，然后存入sd卡中
10	                String fileName = Environment.getExternalStorageDirectory()
11	                        + "/ma"+"/MyHttpTest.apk";
12	                install(fileName);
13	            }
14	        });
15	    }
16	 
17	 
18	 
19	 
20	        //方法体可以在任何地方可套用，不用修改任何东东哦！
21	    public String install(String apkAbsolutePath ){  
22	        String[] args = { "pm", "install", "-r", apkAbsolutePath };
23	        String result = "";
24	        ProcessBuilder processBuilder = new ProcessBuilder(args);
25	        Process process = null; 
26	        InputStream errIs = null;
27	        InputStream inIs = null;
28	        try {
29	            ByteArrayOutputStream baos = new ByteArrayOutputStream();
30	            int read = -1;
31	            process = processBuilder.start();
32	            errIs = process.getErrorStream();
33	            while ((read = errIs.read()) != -1) {
34	                baos.write(read);
35	            }
36	            baos.write("/n".getBytes());
37	            inIs = process.getInputStream();
38	            while ((read = inIs.read()) != -1) {
39	                baos.write(read);
40	            }
41	            byte[] data = baos.toByteArray();
42	            result = new String(data);
43	        } catch (IOException e) {
44	            e.printStackTrace();
45	        } catch (Exception e) {
46	            e.printStackTrace();
47	        } finally {
48	            try {
49	                if (errIs != null) {
50	                    errIs.close();
51	                }
52	                if (inIs != null) {
53	                    inIs.close();
54	                }
55	            } catch (IOException e) {
56	                e.printStackTrace();
57	            }
58	            if (process != null) {
59	                process.destroy();
60	            }
61	        }
62	        return result;
63	    }
64	 
65	 
66	 
67	      <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
68	    <uses-permission android:name="android.permission.INSTALL_PACKAGES" />
69	    <uses-permission android:name="android.permission.DELETE_PACKAGES" />
70	    <uses-permission android:name="android.permission.CLEAR_APP_CACHE" />
71	    <uses-permission android:name="android.permission.CLEAR_APP_USER_DATA" />
72	    <uses-permission android:name="android.permission.READ_PHONE_STATE" />