点击事件OnClickListener接口重写onClick方法实现

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OnClickListener接口重写onClick方法

XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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=".MainActivity"
    android:orientation="vertical"
    >

    <Button
        android:id="@+id/btn1"
        android:layout_width="100dp"
        android:layout_height="40dp"
        android:text="点击1"
        />

</LinearLayout>

Java:

package com.example.zy.mystudy;

import android.app.Activity;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button = (Button)findViewById(R.id.btn1);
        button.setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        Toast.makeText(MainActivity.this,"接口OnClickListener",Toast.LENGTH_SHORT).show();
    }
}

你也可以这样写java：

package com.example.zy.mystudy;

import android.app.Activity;
import android.content.DialogInterface;
import android.net.sip.SipSession;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button = (Button)findViewById(R.id.btn1);
        button.setOnClickListener(new Listener());
    }

    class Listener implements View.OnClickListener{

        @Override
        public void onClick(View view) {
            Toast.makeText(MainActivity.this,"OnClickListener接口实现",Toast.LENGTH_SHORT).show();
        }
    }
}

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帅的人会点赞，美的人也会点赞，好人也会点赞！

帅的人会点赞，美的人也会点赞，好人也会点赞！