android - OnActivityResult 不工作(Android)

Question

我正在使用一个简单的函数 OnActivityResult，但它没有返回我想要的结果。

请查看我的代码并告诉我哪里做错了。

public void OnClickFunction(View view)
{
    Intent intent = new Intent(getApplicationContext(), Second.class);
    startActivityForResult(intent, RESULT_OK);

///     My actions. . . 
}    

然后在第二节课中，我设置了这样的结果:

Button.setOnClickListener(new OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            ValueOne = EditText.getText().toString().trim();
            if (ValueOne.equals(String.valueOf(Answer)))
            {
                Toast.makeText(getApplicationContext(), "Correct Answer", 0).show();
                Second.this.setResult(RESULT_OK, null);
                Second.this.finish();
            }
            else
            {
                Toast.makeText(getApplicationContext(), "Wrong Answer", 0).show();
            }
        }
    });    

现在回到 first.class，Intent 被调用的地方:

    @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
    super.onActivityResult(requestCode, resultCode, data);
//      if (requestCode == RESULT_OK)
//      {
        if (resultCode == RESULT_OK)
        {
                             /////  MyActions. . . 
        }
//      }
}    

调试器没有调试这个函数，所以没有得到想要的结果。
我哪里做错了？？

Answer 1

您必须销毁第二个 Activity 。尝试按后退按钮。我能够在 onActivityResult 中看到所有日志消息

第一个 Activity

public class FirstActivity extends Activity {
/** Called when the activity is first created. */
int result = 100;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Intent i = new Intent(this,SecondActivity.class);
    startActivityForResult(i, result);
}
@Override
protected void onActivityResult (int requestCode, int resultCode, Intent data) {
    Log.i("H", "RequestCode:" + requestCode);
    Log.i("H", "ResultCode:" + resultCode );
}
}

第二个 Activity

public class SecondActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    setResult(RESULT_OK);
    Log.i("S","Exiting Second Activity");
}
}