Android studio之Button点击事件的四种实现方法

1.利用xml实现Button点击事件

axml布局文件

<?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"
    android:orientation="vertical"
    tools:context="com.example.jzhou.buttonclick.MainActivity">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/str_btn"
        android:onClick="myClick"
        />
       <!--onClick后跟指定Button响应的方法名称-->
</LinearLayout>
           

Java实现代码

package com.example.jzhou.buttonclick;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    /**
      @param view
     */
    // myClick为xml中指定的方法名，参数是View类型
    public void myClick(View view) {
        Toast.makeText(this,"这是xml方式指定的Button响应",Toast.LENGTH_LONG).show();
    }
}
           

2.内部类实现Button点击事件

xml布局文件

<?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"
    android:orientation="vertical"
    tools:context="com.example.jzhou.buttonclick.MainActivity">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/str_btn"
        android:id="@+id/Button01"
        />
</LinearLayout>
           

Java实现代码

package com.example.jzhou.buttonclick;

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

public class MainActivity extends AppCompatActivity {

    private Button test_btn = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //绑定Button资源
        test_btn = (Button) findViewById(R.id.Button01);
        //设置Button监听
        test_btn.setOnClickListener(new MyButtonListener());
    }

   // 实现OnClickListener接口
    private class MyButtonListener implements View.OnClickListener {
       
        @Override
        public void onClick(View view) {
            Toast.makeText(MainActivity.this,"使用内部类实现Button点击事件",Toast.LENGTH_LONG).show();
        }
    }
}
           

3.利用内部匿名类实现Button点击事件

xml布局文件

<?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"
    android:orientation="vertical"
    tools:context="com.example.jzhou.buttonclick.MainActivity">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/str_btn"
        android:id="@+id/Button01"
        />
</LinearLayout>
           

Java实现代码

package com.example.jzhou.buttonclick;

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

public class MainActivity extends AppCompatActivity {

    private Button test_btn = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //绑定Button资源
        test_btn = (Button) findViewById(R.id.Button01);
        //设置Button监听
        test_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this,"使用匿名类实现Button点击事件",Toast.LENGTH_LONG).show();
            }
        });
    }
}
           

4.实现OnClickListener接口实现Button点击事件

xml布局文件

<?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"
    android:orientation="vertical"
    tools:context="com.example.jzhou.buttonclick.MainActivity">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/str_btn"
        android:id="@+id/Button01"
        />
</LinearLayout>
           

Java实现代码

package com.example.jzhou.buttonclick;

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

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    private Button test_btn = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //绑定Button资源
        test_btn = (Button) findViewById(R.id.Button01);
        //设置Button监听
        test_btn.setOnClickListener(this);
    }
    @Override
    public void onClick(View view) {
        switch (view.getId())
        {
            case R.id.Button01:
                Toast.makeText(MainActivity.this,"使用OnClickListener实现Button点击事件",Toast.LENGTH_LONG).show();
                break;
        }
    }
}