如何在Android Studio中将控制权从一个活动转移到另一个活动的片段？

Question

How to transfer control from one activity to fragment of another activity in android studio. For example I have activity A and B. Activity B had 2 fragments f1,f2. How to transfer control from A to f2?

Answer 1

从第一个活动传递一些意图标志到第二个活动，在第二个活动中使用getIntent（）在该标志打开所需片段的帮助下检查标志的类型。

Answer 2

Just add this code in your Activity B in onCreate()

        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction =    fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.content_frame, new f2());
        fragmentTransaction.addToBackStack(null);
        fragmentTransaction.commit();

Now,simply use explicit intent to go to Activity B from Activity A,

Intent intent=new Intent(ActivityA.this,ActivityB.class);
startActivity(intent);