Android RecyclerView GestureDetector SimpleOnGestureListener，kotlin

超、凢脫俗 2023-09-27 19:01 135阅读 0赞

import android.graphics.Color
    import androidx.appcompat.app.AppCompatActivity
    import android.os.Bundle
    import android.util.Log
    import android.view.GestureDetector
    import android.view.GestureDetector.SimpleOnGestureListener
    import android.view.Gravity
    import android.view.LayoutInflater
    import android.view.MotionEvent
    import android.view.View
    import android.view.View.OnTouchListener
    import android.view.ViewGroup
    import android.widget.TextView
    import androidx.recyclerview.widget.LinearLayoutManager
    import androidx.recyclerview.widget.RecyclerView
    
    
    class MainActivity : AppCompatActivity() {
        val TAG = "fly"
    
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
            setContentView(R.layout.activity_main)
    
            val recyclerView = findViewById<RecyclerView>(R.id.recycler_view)
            val linearLayoutManager = LinearLayoutManager(this)
            linearLayoutManager.orientation = LinearLayoutManager.HORIZONTAL
            recyclerView.layoutManager = linearLayoutManager
            val adapter = MyAdapter()
            recyclerView.adapter = adapter
    
            val gestureDetector = GestureDetector(this, object : SimpleOnGestureListener() {
                override fun onFling(
                    e1: MotionEvent,
                    e2: MotionEvent,
                    velocityX: Float,
                    velocityY: Float
                ): Boolean {
                    Log.d(TAG, "${velocityX} ${velocityY}")
    
                    return super.onFling(e1, e2, velocityX, velocityY)
                }
            })
    
            recyclerView.setOnTouchListener(object : OnTouchListener {
                override fun onTouch(v: View?, event: MotionEvent?): Boolean {
                    return gestureDetector.onTouchEvent(event!!)
                }
            })
        }
    }
    
    class MyAdapter : RecyclerView.Adapter<MyVH>() {
        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyVH {
            val view = LayoutInflater.from(parent.context)
                .inflate(android.R.layout.simple_list_item_1, null, false)
            val holder = MyVH(view)
            return holder
        }
    
        override fun onBindViewHolder(holder: MyVH, position: Int) {
            holder.text?.text = position.toString()
            if (position % 2 == 0) {
                holder.text?.setBackgroundColor(Color.LTGRAY)
            } else {
                holder.text?.setBackgroundColor(Color.WHITE)
            }
        }
    
        override fun getItemCount(): Int {
            return Int.MAX_VALUE
        }
    }
    
    class MyVH(itemView: View) : RecyclerView.ViewHolder(itemView) {
        var text: TextView? = null
    
        init {
            text = itemView.findViewById(android.R.id.text1)
            text?.height = 2000
            text?.width = 1000
            text?.gravity = Gravity.CENTER
        }
    }

[Android RecyclerView单击、长按事件标准实现：基于OnItemTouchListener + GestureDetector\_zhangphil的博客-CSDN博客Android RecyclerView单击、长按事件：基于OnItemTouchListener + GestureDetector标准实现Android RecyclerView虽然拥有ListView绝大多数的功能，但Android RecyclerView却没有实现像ListView那样的点击事件、长按事件的标准实现方式，我在附录文章1中介绍的方式，实现了典型的RecyclerView![favicon32.ico][]https://blog.csdn.net/zhangphil/article/details/53230157][Android RecyclerView_OnItemTouchListener _ GestureDetector_zhangphil_-CSDN_Android RecyclerView_OnItemTouchListener _ GestureDetector_Android RecyclerView_ListView_Android RecyclerView_ListView_1_RecyclerView_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_53230157]

[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\_zhangphil的博客-CSDN博客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_zhangphil_-CSDN_Android RecyclerView_OnItemTouchListener _GestureDetector_2_Android_OnItemTouchListener _GestureDetector_RecyclerView_Android_Recycle_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_53231344]

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[Android RecyclerView_OnItemTouchListener _ GestureDetector_zhangphil_-CSDN_Android RecyclerView_OnItemTouchListener _ GestureDetector_Android RecyclerView_ListView_Android RecyclerView_ListView_1_RecyclerView_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_53230157]: https://blog.csdn.net/zhangphil/article/details/53230157
[Android RecyclerView_OnItemTouchListener _GestureDetector_zhangphil_-CSDN_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