Android实现静默安装的两种方法

protectedstaticvoidexcuteSuCMD() {

   Process process =null;

   OutputStream out =null;

   InputStream in =null;

   String currentTempFilePath ="/sdcard/QQ.apk";

   try{

   // 请求root

   process = Runtime.getRuntime().exec("su");

   out = process.getOutputStream();

   // 调用安装

   out.write(("pm install -r "+ currentTempFilePath +"\n").getBytes());

   in = process.getInputStream();

   intlen =0;

   byte[] bs =newbyte[256];

   while(-1!= (len = in.read(bs))) {

   String state =newString(bs,0, len);

   if(state.equals("Success\n")) {

    //安装成功后的操作

     }

    }

   }catch(IOException e) {

    e.printStackTrace();

   }catch(Exception e) {

    e.printStackTrace();

   }finally{

    try{

     if(out !=null) {

      out.flush();

      out.close();

     }

     if(in !=null) {

      in.close();

     }

    }catch(IOException e) {

     e.printStackTrace();

    }

   }

  }

publicstaticvoidopenFile() {

  // 核心是下面几句代码

  if(!isHasfile()) {

   downLoadFile(url);

  }

  Intent intent =newIntent();

  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

  intent.setAction(android.content.Intent.ACTION_VIEW);

  intent.setDataAndType(

    Uri.fromFile(newFile("/sdcard/update/updata.apk")),

    "application/vnd.android.package-archive");

  mContext.startActivity(intent);

 }