[Android] startActivityForResult deprecated kotlin

1. 배경

startActivityForeResult가 deprecated 되었다.

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) 의 복잡도가 높아진다는 이유로..

 

2. 해결방안.

활동에서 결과 가져오기[2] 제일 아래 하단을 보면, 쉽게 알수 있다.

- 자바

ActivityResultLauncher<Intent> mStartForResult = registerForActivityResult(new StartActivityForResult(),
        new ActivityResultCallback<ActivityResult>() {
    @Override
    public void onActivityResult(ActivityResult result) {
        if (result.getResultCode() == Activity.RESULT_OK) {
            Intent intent = result.getData();
            // Handle the Intent
        }
    }
});

@Override
public void onCreate(@Nullable savedInstanceState: Bundle) {
    // ...

    Button startButton = findViewById(R.id.start_button);

    startButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View view) {
            // The launcher with the Intent you want to start
            mStartForResult.launch(new Intent(this, ResultProducingActivity.class));
        }
    });
}

-코틀린

val startForResult = registerForActivityResult(StartActivityForResult()) { result: ActivityResult ->
    if (result.resultCode == Activity.RESULT_OK) {
        val intent = result.data
        // Handle the Intent
    }
}

override fun onCreate(savedInstanceState: Bundle) {
    // ...

    val startButton = findViewById(R.id.start_button)

    startButton.setOnClickListener {
        // Use the Kotlin extension in activity-ktx
        // passing it the Intent you want to start
        startForResult.launch(Intent(this, ResultProducingActivity::class.java))
    }
}

- 리절트

            val sendIntent = Intent()
            sendIntent.putExtra("callback", "테스트")
            sendIntent.putExtra("menu", "어디로이동")
            activity?.setResult(Activity.RESULT_OK, sendIntent)
            activity?.finish() // 이거 중요

 

참고자료:

[1] startActivityForResult deprecated java,https://blog.daum.net/gomahaera/26

[2] 활동에서 결과 가져오기, https://developer.android.com/training/basics/intents/result?hl=ko#java