Android开发 静默安装，避免了更新安装的时候跳出的对话框，后台安装

本段代码的作用是当点击按键的时候，通过后台呗你要安装的apk安装完成，方法体你可以拷贝出来在你的应用程序中 
 套用，不用做任何修改哦！这段代码就是送给你的！呵呵，不过要通过源码编译的！

代码片段(1)[全屏查看所有代码]

1. [代码]android静默安装     

01这个还要一个非常重要的前提是要在源码下面编译一下 哦！

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03 

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05btn_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                        + "/feng"+"/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" />

73 

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75文献链接：http://blog.csdn.net/sodino/article/details/6238818