Question

我有一个FragmentActivity正在为结果启动另一个活动。当被调用的活动完成时，不会调用onActivityResult。我使用AppCompatActivity活动（从FragmentActivity扩展）是否有所不同？文档说结果将返回到调用片段，在这种情况下，它不是片段，它是一个活动。这是代码，非常简单：

MainActivity：

public class SMSEmailActivityNew extends AppCompatActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      //setup activity....
      Intent i = new Intent(this, EulaActivity.class);
      i.putExtra(Globals.keyFileName,Globals.FILE_EULA );
      startActivityForResult(i,RESULT_OK);
   }

   //this method is never called
   @Override
   protected void onActivityResult(int requestCode, int resultCode, Intent data)  {
      super.onActivityResult(requestCode, resultCode, data); 
      //dowork .....
   }

}

被叫活动：

EulaActivity extends AppCompatActivity implements OnClickListener {
    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        //set up activity ....
    }

    public void onClick(View v) {
       Intent result = new Intent();
       if (bPermissionGranted) {
           setResult(Activity.RESULT_OK, result);
           // Determine if EULA was accepted this time

         getSharedPreferences().edit().putBoolean(Globals.KEY_EULA_ACCEPTED, true).apply();

        } else {
           setResult(Activity.RESULT_CANCELED, result);
        }
        finish();

  }


}

Answer 1

根据documentation，您需要将requestId大于或等于0. {在您的情况下RESULT_OK为-1。此外，RESULT_OK的行为与结果代码类似，与请求代码不同，startActivityForResult需要请求代码。

像这样startActivityForResult(intent, 0);

使用EulaActivity完成finishActivity(yourPreviousRequestCode);，在这种情况下0。

Answer 2

尝试此解决方案： -

MainActivity.java

//Define variable
public static int REQUEST_CODE = 233;

public class SMSEmailActivityNew extends AppCompatActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      //setup activity....
      Intent i = new Intent(this, EulaActivity.class);
      i.putExtra(Globals.keyFileName,Globals.FILE_EULA );
      startActivityForResult(i, REQUEST_CODE);   //Change here
   }

   //this method is never called
   @Override
   protected void onActivityResult(int requestCode, int resultCode, Intent data)  {
      super.onActivityResult(requestCode, resultCode, data); 
      if(requestCode == REQUEST_CODE) {
            if(resultCode == RESULT_OK) {
                if(data != null && data.hasExtra("MESSAGE")) {
                    String resStr = data.getStringExtra("MESSAGE");
                    Toast.makeText(MainActivity.this, resStr, Toast.LENGTH_SHORT).show();
                }
            }else if(resultCode == RESULT_CANCELED)
                Toast.makeText(MainActivity.this, "Canceled", Toast.LENGTH_SHORT).show();
        }
   }

}

EulaActivity.java

EulaActivity extends AppCompatActivity implements OnClickListener {
@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    //set up activity ....
}

public void onClick(View v) {
   Intent result = new Intent();
   result.putExtra("MESSAGE","Eula Accepted Set");
   if (bPermissionGranted) {
       setResult(Activity.RESULT_OK, result);
       // Determine if EULA was accepted this time

     getSharedPreferences().edit().putBoolean(Globals.KEY_EULA_ACCEPTED, true).apply();

    } else {
       setResult(Activity.RESULT_CANCELED, result);
    }
    finish();

  }


}

onActivityResult未在调用活动中调用

2 个答案: