为拨号器意图获取 RESULT_CANCELED

Question

I am trying to get result for dialer Intent using startActivityForResult()

Below is my code for Dialer Intent.

        button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(Intent.ACTION_DIAL);
            intent.setData(Uri.parse("tel:123456789"));
            startActivityForResult(intent, 1234);
           }
        });

        @Override
        protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
          super.onActivityResult(requestCode, resultCode, data);
          if(requestCode == 1234){

           if (resultCode == Activity.RESULT_OK){
             Toast.makeText(getApplicationContext(), "result ok", Toast.LENGTH_LONG).show();
           }else if (resultCode == Activity.RESULT_CANCELED){
               Toast.makeText(getApplicationContext(), "Result Cancelled", Toast.LENGTH_LONG).show();
           }
          }

       }

whenever I am returning to my activity, Result Cancelled Toast is triggering.

Thanks in advance.

Answer 1

why am I getting RESULT_CANCELED instead of RESULT_OK.

ACTION_DIAL does not return a result. If you read the documentation for ACTION_DIAL , you will see "Output: nothing". Hence, you will usually get RESULT_CANCELED . Only activities designed for use with startActivityForResult() will return a result code.

Answer 2

From doc :

ACTION_DIAL

public static final String ACTION_DIAL

You only have the ACTION . If you want to call a number from your application then you just have to put these lines of code into the onClick() method and can get what you want:

Intent intent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:123456789"));
startActivity(intent); // no need to use startActivityResult(intent,1234)

Here, If an ACTION_DIAL input is nothing, an empty dialer is started; else getData() is URI of a phone number to be dialed or a tel: <yourURI> of an explicit phone number. Additionally, there is no "Output" of RESULT_OK or RESULT_CANCELED , Cause, the startActivityResult() doesn't mean anything to ACTION_DIAL but startActivity(intent) . Hope it helps.