安卓按钮点击事件、触摸事件、长按事件的实现与根本
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"xmlns:app="/apk/res-auto"xmlns:tools="/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"><Buttonandroid:id="@+id/btn"android:backgroundTint="@color/btn_colro"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="按钮"/></LinearLayout>
package com.example.btn;import android.os.Bundle;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.widget.Button;import androidx.appcompat.app.AppCompatActivity;public class MainActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//实例化btn按钮Button btn = findViewById(R.id.btn);//点击事件 onclickbtn.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Log.d("点击","123123");//Intent intent = new Intent(MainActivity.this,MainActivity.class);//startActivity(intent);}});//长按事件 setOnLongClickListenerbtn.setOnLongClickListener(new View.OnLongClickListener() {@Overridepublic boolean onLongClick(View v) {Log.d("点击","7893");return false;}});//触摸事件setOnTouchlistenerbtn.setOnTouchListener(new View.OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {Log.e("触摸",""+ event.getAction());return false;}});}}
