Start activity without showing it

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失恋的感觉
失恋的感觉 2020-12-15 22:16

I have an activity A, which starts activity B and activity B starts activity C. Is there a way not to show activity B. I want this behavour because if there is no content (e

5条回答
  •  一向
    一向 (楼主)
    2020-12-15 22:25

    I found the solution:

    • Activity A starts activity B with extra parameter (intent.putExtra("something", true))
    • Activity B:
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getIntent().hasExtra("something") && getIntent().getBooleanExtra("something", false) {
                //show activity B
            setContentView(R.layout.activity_B);
        } else {
                //don't show activity B, start activity C
            startActivityForResult(activity_C, ACTIVITY_NOT_INITIALIZED); //start activity C
        }
    }
    

    //when came back from activity C, check if activity B was already initialized

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == ACTIVITY_NOT_INITIALIZED) {
            //show activity B
            setContentView(R.layout.activity_B);
      }
    }
    

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