Android RecyclerView基于GestureDetector,SimpleOnItemTouchListener简洁OnItemClick(position)实现，Kotlin

╰半夏微凉° 2024-02-17 09:20 34阅读 0赞

### Android RecyclerView基于GestureDetector,SimpleOnItemTouchListener简洁OnItemClick(position)实现，Kotlin ###

import android.view.GestureDetector
    import android.view.GestureDetector.SimpleOnGestureListener
    import android.view.MotionEvent
    import android.view.View
    import androidx.recyclerview.widget.RecyclerView
    import androidx.recyclerview.widget.RecyclerView.SimpleOnItemTouchListener
    
    open class RVOnItemClickListener() : SimpleOnItemTouchListener() {
        private var mGestureDetector: GestureDetector? = null
    
        constructor(recyclerView: RecyclerView) : this() {
            mGestureDetector =
                GestureDetector(recyclerView.context, object : SimpleOnGestureListener() {
                    //长按
                    override fun onLongPress(e: MotionEvent) {
                        super.onLongPress(e)
    
                        val childView = recyclerView.findChildViewUnder(e.x, e.y)
                        if (childView != null) {
                            val position = recyclerView.getChildLayoutPosition(childView)
    
                            onItemLongClick(position, childView)
                        }
                    }
    
                    //单击
                    override fun onSingleTapUp(e: MotionEvent): Boolean {
                        val childView = recyclerView.findChildViewUnder(e.x, e.y)
                        if (childView != null) {
                            val position = recyclerView.getChildLayoutPosition(childView)
    
                            onItemClick(position, childView)
    
                            return true
                        }
    
                        return super.onSingleTapUp(e)
                    }
                })
        }
    
        override fun onInterceptTouchEvent(rv: RecyclerView, e: MotionEvent): Boolean {
            return mGestureDetector?.onTouchEvent(e)!!
        }
    
        //长按
        open fun onItemLongClick(position: Int, view: View?) {
    
        }
    
        //单击事件接口
        open fun onItemClick(position: Int, view: View?) {
    
        }
    }

上层RecyclerView使用方式：

val mRecyclerView = findViewById<RecyclerView>(R.id.recycler_view)
            val layoutManager = GridLayoutManager(this, GRID_SIZE)
            mRecyclerView?.layoutManager = layoutManager
    
            val adapter = MyAdapter()
            mRecyclerView?.adapter = adapter
    
            mRecyclerView.addOnItemTouchListener(object : RVOnItemClickListener(mRecyclerView) {
                override fun onItemClick(position: Int, view: View?) {
                    //单击回调
                }
            })

上述实现，比下面的这种实现更简洁。

[Android RecyclerView单击、长按事件:基于OnItemTouchListener +GestureDetector标准实现（二），封装抽取成通用工具类-CSDN博客文章浏览阅读4.2k次，点赞2次，收藏3次。Android RecyclerView单击、长按事件:基于OnItemTouchListener +GestureDetector标准实现（二），封装抽取成通用工具类我写的附录文章2，介绍了Android如何基于OnItemTouchListener +GestureDetector实现单击、长按事件的监听，由于如今RecyclerView在Android开发是如此的普遍，以及Recycle![favicon32.ico][]https://blog.csdn.net/zhangphil/article/details/53231344][Android RecyclerView_OnItemTouchListener _GestureDetector_-CSDN_4.2k_2_3_Android RecyclerView_OnItemTouchListener _GestureDetector_2_Android_OnItemTouchListener _GestureDetector_RecyclerView_Android_Recycle_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_53231344]

[favicon32.ico]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/06/f4a33f6e902e4b7d8ecbe2aaeb77d511.png
[Android RecyclerView_OnItemTouchListener _GestureDetector_-CSDN_4.2k_2_3_Android RecyclerView_OnItemTouchListener _GestureDetector_2_Android_OnItemTouchListener _GestureDetector_RecyclerView_Android_Recycle_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_53231344]: https://blog.csdn.net/zhangphil/article/details/53231344