<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.administrator.myapplication.MainActivity"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/btn_click" android:text="点击"/> </android.support.constraint.ConstraintLayout>
JAVA文件
package com.example.administrator.myapplication; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); /* 按钮Button */ Button btn_click = (Button)findViewById(R.id.btn_click); //点击事件 btn_click.setOnClickListener(new MyOnClickListener()); //长按事件 btn_click.setOnLongClickListener(new MyOnLongClickListener()); } private class MyOnClickListener implements View.OnClickListener { @Override public void onClick(View v) { if (v.getId()==R.id.btn_click){ Toast.makeText(MainActivity.this, "您点击了控件:"+((TextView)v).getText(), Toast.LENGTH_SHORT).show(); } } } /* 按钮Button控制器 */ private class MyOnLongClickListener implements View.OnLongClickListener { @Override public boolean onLongClick(View v) { if (v.getId()==R.id.btn_click){ Toast.makeText(MainActivity.this, "您长按了控件:"+((TextView)v).getText(), Toast.LENGTH_SHORT).show(); } return false; } } }