onClickListener vs onClick()

Question

如果我们呼吁双方onClickListener和onClick()从XML的方法,则始终onClickListener方法被调用.
为什么会这样？

public class MainActivity extends Activity {
Button buttonCheck;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    buttonCheck = (Button) findViewById(R.id.buttonTesting);
    buttonCheck.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Toast.makeText(getApplicationContext(), "On Click Listener", Toast.LENGTH_SHORT).show();
            Log.e("OnClick", "Called");
        }
    });
}
public void checkStatus(View view) {
    Toast.makeText(getApplicationContext(), "On checkStatus", Toast.LENGTH_SHORT).show();
    Log.e("checkStatus", "Called");
}

}

xml布局:

    <Button
    android:id="@+id/buttonTesting"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="162dp"
    android:onClick="checkStatus"
    android:text="Check" />

Answer 1

onClickxml只是在调用setOnClickListenerView时创建.然后setOnClickListener,当您调用代码时,它将覆盖OnClickListener设置的现有代码xml.