慕课网--toggleButton

ToggleButton(开关按钮)是Android系统中比较简单的一个组件，是一个具有选中和未选择状态双状态的按钮，并且需要为不同的状态设置不同的显示文本。

package com.example.test_toggle_button;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.CompoundButton;import android.widget.ImageView;import android.widget.ToggleButton;public class MainActivity extends Activity implements OnCheckedChangeListener{private ToggleButton tb;private ImageView img;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tb = (ToggleButton) findViewById(R.id.toggleButton1);img = (ImageView) findViewById(R.id.imageView1);tb.setOnCheckedChangeListener(this);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}@Overridepublic void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {img.setImageResource(isChecked ? R.drawable.on : R.drawable.off);}}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <ToggleButton        android:id="@+id/toggleButton1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:textOn="开"        android:textOff="关"        android:checked="false"     />    <ImageView        android:id="@+id/imageView1"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:src="@drawable/off" /></LinearLayout>