如何安装assets下apk，附源码（原创）

如何安装assets下apk，附源码（原创）

public   static   void Install(Context ctx, String strLocalFile) {
        Intent intentInstall  =   new  Intent();
        String apkPath  =   " /data/data/ "   +  ctx.getPackageName()  +   " /files " ;
        String apkName  =   " yuan.apk " ;
        File file  =   new  File(apkPath, apkName);
         try  {
//assets下对于超过2M 的文件，有所限制，建议改名为Jpg
  InputStream is  =  ctx.getAssets().open( " yuan.apk " );

             if  ( ! file.exists()) {
                file.createNewFile();
                FileOutputStream os  =  ctx.openFileOutput(file.getName(),
                        Context.MODE_WORLD_WRITEABLE);
                 byte [] bytes  =   new   byte [ 512 ];
                 int  i  =   - 1 ;
                 while  ((i  =  is.read(bytes))  >   0 ) {
                    os.write(bytes);
                }

                os.close();
                is.close();
                Log.e( "" ,  " ----------- has been copy to  " );
            }  else  {
                Log.e( "" ,  " -----------cunzai  " );
            }
            String permission  =   " 666 " ;

             try  {
                String command  =   " chmod  "   +  permission  +   "   "   +  apkPath  +   " / "
                         +  apkName;
                Runtime runtime  =  Runtime.getRuntime();
                runtime.exec(command);
            }  catch  (IOException e) {
                e.printStackTrace();
            }

        }  catch  (Exception e) {
            Log.e( "" , e.toString());
        }
        Log.e( "" ,  " fl-- "   +  file.getName()  +   " -dd--- "   +  file.getAbsolutePath()
                 +   " -pa- "   +  file.getPath());
        intentInstall.setAction(android.content.Intent.ACTION_VIEW);
        intentInstall.setDataAndType(Uri.fromFile(file),
                 " application/vnd.android.package-archive " );
        intentInstall.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        ctx.startActivity(intentInstall);
    }

当然代码大部分参考其他人的，请见谅
同时请参考

http://ccsosnfs.iteye.com/blog/1390405