Android 开启第三方APP

   int mfingerId=mUpdateMonitor.fingerId;
   Log.d("from keyguard","id is "+mfingerId);

   int myid=Settings.Global.getInt(mContext.getContentResolver(),"my_FINGER_ID",-1);
   Log.d("from Global", "fingerid is " +myid);

  if(ifFingerprint&&mfingerId==myid)
    {
        PackageManager mPackageManager = mContext.getPackageManager();
        mPackageManager.setApplicationLockState("com.jrdcom.privatezone", 2);
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_LAUNCHER);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
　 　//组建名，下面的代码很关键，参数（包名，目标Activity名）
        ComponentName comp = new ComponentName("com.jrdcom.privatezone",
                "com.jrdcom.filemanager.activity.ApplicationLockActivity"); 
        intent.setComponent(comp);
        mContext.startActivity(intent);
        ifFingerprint=false;
      }