Question

首先，我正在使用回收站视图在 ExclusiveWallpaper.java片段中显示图像。在这里一切正常

第二次单击“回收者”视图中的任何图像，我将该图像发送到下一个活动 Images.class ，在这里，我有 CustomAdapterRV扩展了RecyclerView.Adapter ， >

@Override
    public void onBindViewHolder(@NonNull final CustomAdapterRV.ViewHolder viewHolder, final int position) {
        final Model_rv model = modelList.get(position);
        viewHolder.imageView.setImageResource(model.getImage());
        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                image_position = position;
                int childCount = rv.getChildCount();
                Intent intent = new Intent(mctx, Images.class);
                intent.putExtra("image", model.getImage());
                mctx.startActivity(intent);
            }
        });
    }

3rd我在images.class中收到了它

imageView=findViewById(R.id.images);
        Intent intent=getIntent();
        final int image=intent.getIntExtra("image",0);
        imageView.setImageResource(image);

第4个此处，我想在用户左右滑动时获取下一张或上一张图像。我在这里使用 GestureDetector.SimpleOnGestureListener 在这里我使用 onfling 注意onfling可以正常工作

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
    float deltaX = e1.getX() - e2.getX();
    float deltaY = e1.getY() - e2.getY();
    float deltaXAbs = Math.abs(deltaX);
    float deltaYAbs = Math.abs(deltaY);
    if((deltaXAbs >= MIN_SWIPE_DISTANCE_X) && (deltaXAbs <= MAX_SWIPE_DISTANCE_X))
    {
        if(deltaX > 0)
        {
            Toast.makeText(getActivity(), "swipe left", Toast.LENGTH_SHORT).show();
        }else
        {
            Toast.makeText(getActivity(), "swipe rit", Toast.LENGTH_SHORT).show();
        }
    }
    if((deltaYAbs >= MIN_SWIPE_DISTANCE_Y) && (deltaYAbs <= MAX_SWIPE_DISTANCE_Y))
    {
        if(deltaY > 0)
        {
            Toast.makeText(getActivity(), "swipe up", Toast.LENGTH_SHORT).show();
        }else
        {
            Toast.makeText(getActivity(), "swipe down", Toast.LENGTH_SHORT).show();
        }
    }
    return true;
}

第5个帮助我如何在滑动时获取下一张图片

我想左右滑动时更改图像。我正在使用recyler view，fragments和peactedetctor.SimpleOnGestureListener

0 个答案: