Android学习笔记之Switch的使用案例

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（1）布局文件代码

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <Switch        android:id="@+id/switch1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginLeft="32dp"        android:layout_marginTop="94dp"        android:text="开启震动"        android:textOff="关闭"        android:onClick="onToggleClicked"        android:textOn="打开" />    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/switch1"        android:layout_alignParentTop="true"        android:layout_marginTop="26dp"        android:text="Switch的使用"        android:textSize="30dp" /></RelativeLayout>

（2）控制的类

package com.example.android_switch;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.Switch;import android.widget.Toast;import android.widget.ToggleButton;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}public void onToggleClicked(View view) {/* * 强转为Switch类型的 */boolean isChecked = ((Switch) view).isChecked();if (isChecked == true) {Toast.makeText(MainActivity.this, "打开", 1).show();} else {Toast.makeText(MainActivity.this, "关闭", 1).show();}}@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;}}

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