1，首先第三方app非入口activity要有android:exported="true"屬性，在mainfest.xml里面寫

2，

public static void startActivity(Context mContext,String packageName,String  className){		try {			Intent intent = new Intent(Intent.ACTION_MAIN);  			intent.addCategory(Intent.CATEGORY_LAUNCHER);              			ComponentName cn = new ComponentName(packageName, className);              			intent.setComponent(cn);  			mContext.startActivity(intent);  				} catch (Exception e) {			// TODO: handle exception			LogUtils.i(Tag, ""+e);  		}	 	}