ToggleButton的用法

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XML文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <ToggleButton        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/toggleButton"        android:textOff="关"        android:textOn="开"/>    <ImageView    android:layout_width="match_parent"    android:layout_height="match_parent"    android:id="@+id/imageView2"        android:background="@drawable/a1"/></LinearLayout>

MainActivity

import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.CompoundButton;import android.widget.ImageButton;import android.widget.ImageView;import android.widget.ToggleButton;public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {    private ToggleButton tb;    private ImageView img;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //初始化控件        tb = (ToggleButton) findViewById(R.id.toggleButton);        //设置监听器        tb.setOnCheckedChangeListener(this);       //初始化控件
       img = (ImageView) findViewById(R.id.imageView2);    }    @Override    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {        img.setBackgroundResource(isChecked?R.drawable.a2:R.drawable.a1);    }}

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