java - android 中最喜欢的按钮无法正常工作

Question

你好我正在制作一个应用程序，其中我有一个小心脏图像 onclick 该图像我设置了一个 onclick 监听器 所以当我点击该图像时它被另一个红色心脏图像取代.

所以我的问题是，当我再次点击红色的心形图像时，它不会变成正常状态，即空白的心形 vector 图像，因为我是 android 的新手，我没有太多知识，如果有人可以指导的话。

我的图片点击代码

  @Override
    public void onBindViewHolder(FeedViewHolder holder, int position) {
    int image_id = images[position];
    //holder.background_image_layout.setImageDrawable(null);
    //holder.background_image_layout.setImageResource(image_id);
    holder.background_image.setBackgroundResource(image_id);

    }

    @Override
    public int getItemCount() {
        return images.length;
    }
    public static class FeedViewHolder extends RecyclerView.ViewHolder {
        CustomTextViewMedium first_text,second_text,third_text,fourth_text,fifth_text,sixth_text,
                seventh_text;
        ImageView favourite_image;
        CardView primary_card;
        LinearLayout background_image;
        ImageView background_image_layout;
        CircleImageView profile_image;
        public FeedViewHolder(View itemView) {
            super(itemView);
            background_image = (LinearLayout)itemView.findViewById(R.id.background_image);
            primary_card = (CardView)itemView.findViewById(R.id.primary_card);
            first_text = (CustomTextViewMedium)itemView.findViewById(R.id.first_text);
            second_text = (CustomTextViewMedium)itemView.findViewById(R.id.second_text);
            third_text = (CustomTextViewMedium)itemView.findViewById(R.id.third_text);
            fourth_text = (CustomTextViewMedium)itemView.findViewById(R.id.fourth_text);
            fifth_text = (CustomTextViewMedium)itemView.findViewById(R.id.fifth_text);
            sixth_text = (CustomTextViewMedium)itemView.findViewById(R.id.sixth_text);
            seventh_text = (CustomTextViewMedium)itemView.findViewById(R.id.seventh_text);
            favourite_image = (ImageView)itemView.findViewById(R.id.favourite_image);
            background_image_layout = (ImageView) itemView.findViewById(R.id.background_image_layout);
            profile_image = (CircleImageView)itemView.findViewById(R.id.profile_image);
            favourite_image.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if(favourite_image.isPressed()){
                        favourite_image.setImageResource(R.drawable.ic_heart);
                        favourite_image.setScaleType(ImageView.ScaleType.CENTER_CROP);
                    }
                    else {
                        favourite_image.setImageResource(R.drawable.ic_favorite_border_black_24dp);
                        favourite_image.setScaleType(ImageView.ScaleType.CENTER_CROP);
                    }
                }
            });


        }
    }

Answer 1

像这样使用 if 条件:-

首先像这样全局定义:-

boolean imageChange = true;

然后在 setOnClickListener 中这样做:-

  favourite_image.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if(imageChange ){
                            favourite_image.setImageResource(R.drawable.ic_heart);
                            favourite_image.setScaleType(ImageView.ScaleType.CENTER_CROP);
                            imageChange = false;                        
                           }else {
                                favourite_image.setImageResource(R.drawable.ic_favorite_border_black_24dp);
                                favourite_image.setScaleType(ImageView.ScaleType.CENTER_CROP);
                                imageChange = true;
                            }
                        }
                    });