我想在我的家庭活动中使用alertDialogRadio框

Question

我收到这样的错误：

  

java.lang.RuntimeException：无法启动活动ComponentInfo {com.splash.indivillage.indishare / com.splash.indivillage.indishare.Home.HomeActivity}：java.lang.NullPointerException：尝试调用虚拟方法＆＃39 ; void android.widget.ImageButton.setOnClickListener（android.view.View $ OnClickListener）＆＃39;在null对象referenceOnClickListener

上

listener = new OnClickListener() {
    @Override
    public void onClick(View v) {
        /** Getting the fragment manager */
        FragmentManager manager = getFragmentManager();

        /** Instantiating the DialogFragment class */
        AlertDialogRadio alert = new AlertDialogRadio();

        /** Creating a bundle object to store the selected item's index */
        Bundle b  = new Bundle();

        /** Storing the selected item's index in the bundle object */
        b.putInt("position", position);

        /** Setting the bundle object to the dialog fragment object */
        alert.setArguments(b);

        /** Creating the dialog fragment object, which will in turn open the alert dialog window */
        alert.show(manager, "alert_dialog_radio");
    }
};

/** Getting the reference of the button from the main layout */
ImageButton abuseBtn = (ImageButton) findViewById(R.id.abuseImageView);

/** Setting a button click listener for the choose button */
abuseBtn.setOnClickListener(listener);
Log.d(TAG, "onCreate: starting.");