Android ToggleButton Example--开关按钮

Android ToggleButton Example


在 Android 中,  “android.widget.ToggleButton” 是个特殊的类,可以渲染出一个“开关按钮” ,顾名思义,此“开关按钮”有“开”和“关”两种状态。
本教程将展现,将使用 xml 创建两个“开关按钮”和一个“普通按钮”,当用户点击“普通按钮”时,将展现两个“开关按钮”的当前状态。


1. Custom String

File : res/values/strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">ToggleButtonDemo</string>
    <string name="action_settings">Settings</string>
    <string name="toggle_turn_on">Turn On打开</string>
    <string name="toggle_turn_off">Turn Off关闭</string>
    <string name="btn_display">Display</string>
</resources>




2. 开关按钮--ToggleButton

打开 “res/layout/activity_main.xml” 文件, 在“线性布局”中添加两个“开关按钮” 和一个“普通按钮”。


File : res/layout/activity_main.xm


<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"
    tools:context=".MainActivity" 
    android:orientation="vertical">

    <ToggleButton
        android:id="@+id/toggleButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="ToggleButton开关按钮" />
 
    <ToggleButton
        android:id="@+id/toggleButton2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textOn="@string/toggle_turn_on"
        android:textOff="@string/toggle_turn_off"
        android:checked="true" />
 
    <Button
        android:id="@+id/btnDisplay"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn_display" />

</LinearLayout>

注: toggleButton2 默认为选中状态,android:checked ="true"



3. Code Code
Inside activity “onCreate()” method, attach a click listeners on a normal button, 
to display the current state of the toggle button.

File : MainActivity.java


package com.jiangge.togglebuttondemo;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import android.widget.ToggleButton;

public class MainActivity extends Activity {

	private ToggleButton toggleButton1,toggleButton2;
	private Button btnDisplay;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		addListenerOnButton();
		
	}

	private void addListenerOnButton() {
		toggleButton1 = (ToggleButton) findViewById(R.id.toggleButton1);
		toggleButton2 = (ToggleButton) findViewById(R.id.toggleButton2);
		btnDisplay = (Button) findViewById(R.id.btnDisplay);
	 
		btnDisplay.setOnClickListener(new OnClickListener() {
	 
			@Override
			public void onClick(View v) {
	 
			   StringBuffer result = new StringBuffer();
			   result.append("toggleButton1 : ").append(toggleButton1.getText());
			   result.append("
toggleButton2 : ").append(toggleButton2.getText());
	 
			   Toast.makeText(MainActivity.this, result.toString(),
				Toast.LENGTH_SHORT).show();
	 
			}
	 
		});
	}

}


4、运行结果:

①、




②、



================================================

再来一个例子:官方文档。

a ToggleButton with the android:onClick 属性:

<ToggleButton 
    android:id="@+id/togglebutton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textOn="Vibrate on"
    android:textOff="Vibrate off"
    android:onClick="onToggleClicked"/>



处理单击事件:

public void onToggleClicked(View view) {
    // Is the toggle on?
    boolean on = ((ToggleButton) view).isChecked();
    
    if (on) {
        // Enable vibrate
    } else {
        // Disable vibrate
    }
}


=============

参考文献:

1、官方文档

2、





原文地址:https://www.cnblogs.com/pangblog/p/3239018.html