intent实现apk之间的跳转

 Intent intent = new Intent(Intent.ACTION_MAIN); 
 intent.addCategor(Intent.CATEGORY_LAUNCHER);
 intent.setClassName(appItem.getPackageName(),  
          appItem.getClassName());
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED );
        mContext.startActivity(intent);