Question

private Bundle detailsbundle = new Bundle();
private onFABCLick mlistener;


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_details, container, false);
    TextView naam = (TextView) view.findViewById(R.id.name);
    TextView adres = (TextView) view.findViewById(R.id.adress);
    TextView gemeente = (TextView) view.findViewById(R.id.gemeente);
    TextView deelgemeente = (TextView) view.findViewById(R.id.deelgemeente);
    TextView postcode = (TextView) view.findViewById(R.id.postcode);
    final ImageButton favourite = (ImageButton)  view.findViewById(R.id.imageButton);
    naam.setText(detailsbundle.getString(DETAILS_NAAM));
    adres.setText(detailsbundle.getString(DETAILS_ADRES));
    gemeente.setText(detailsbundle.getString(DETAILS_GEMEENTE));
    deelgemeente.setText(detailsbundle.getString(DETAILS_DEELGEMEENTE));
    postcode.setText(detailsbundle.getString(DETAILS_POSTCODE));
    boolean isFavourite = detailsbundle.getBoolean(DETAILS_FAVOURITE);
    if(isFavourite){
        favourite.setImageResource(R.drawable.ic_star_black_18dp);
        favourite.setTag(R.drawable.ic_star_black_18dp);
    }
    else{
        favourite.setTag(R.drawable.ic_star_border_black_18dp);
    }
    favourite.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            mlistener.onFavClick(favourite);
        }

    });
    return view;

}


@Override
public void onAttach(Context context) {
    super.onAttach(context);
    if (context instanceof onFABCLick) {
        mlistener = (onFABCLick) context;
    } else {
        throw new RuntimeException(context.toString()
                + " must implement interface");
    }

}


public interface onFABCLick{
    public void onFavClick(ImageButton favourite);
}

在我的活动中：

public void onFavClick(ImageButton favourite) {
    if ((Integer)favourite.getTag() == R.drawable.ic_star_border_black_18dp){
        favourite.setImageResource(R.drawable.ic_star_black_18dp);
    }
    else{
        favourite.setImageResource(R.drawable.ic_star_border_black_18dp);
    }
}

基本上我的代码应该做的是：如果单击按钮，并且它是最喜欢的，它将从数据库中删除（仍然需要写入，但不相关） - ＆gt;图标更改。反之亦然。但是，如果有人要改变主意，显然必须在不更改页面的情况下撤消。但是，我的代码没有这样做，只能单击按钮一次，第二次它不会执行任何操作（第一次单击双向工作）。

我该如何解决这个问题？

Answer 1

在onFavClick上，你也必须更改标签，否则标签保持不变。

   public void onFavClick(ImageButton favourite) {
        if ((Integer)favourite.getTag() == R.drawable.ic_star_border_black_18dp){ 
            favourite.setImageResource(R.drawable.ic_star_black_18dp);
            favourite.setTag(R.drawable.ic_star_black_18dp); }
     } else{ 
            favourite.setImageResource(R.drawable.ic_star_border_black_18dp); 
             favourite.setTag(R.drawable.ic_star_border_black_18dp); }
    } }

Answer 2

您可以为按钮点击事件实施此功能：

private int _clicks = 0;
k = (ImageButton)findViewById(R.id.imageButton1);


    if(count == 1)
         //do whatever
    if(count == 2)
         //do whatever
    if(count == 3)
         //do whatever
}
});

图像按钮多次点击

2 个答案: