瘋狂 Android 講義, 4/e – ToggleButton按钮/Switch按钮(動態改變LayOut布局)範例 P96~P98

資料來源:

    https://github.com/daichangya/book/tree/master/android

    https://pan.baidu.com/s/1d_xYJI0UQ_1tQzSj_V_NIg 提取码:70ch

XML Code

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical"
	android:layout_width="match_parent"
	android:layout_height="match_parent">
	<!-- 定义一个ToggleButton按钮 -->
	<ToggleButton android:id="@+id/toggle"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:textOff="横向排列"
		android:textOn="纵向排列"
		android:checked="true"/>
	<Switch android:id="@+id/switcher"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:textOff="横向排列"
		android:textOn="纵向排列"
		android:thumb="@drawable/check"
		android:checked="true"/>
	<!-- 定义一个可以动态改变方向的线性布局 -->
	<LinearLayout android:id="@+id/test"
		android:orientation="vertical"
		android:layout_width="match_parent"
		android:layout_height="match_parent">
		<!-- 下面省略了三个按钮的定义 -->
		<Button
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:text="测试按钮一"
			/>
		<Button
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:text="测试按钮二"
			/>
		<Button
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:text="测试按钮三"
			/>
	</LinearLayout>
</LinearLayout>

Java Code

package org.crazyit.ui;

import android.app.Activity;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.LinearLayout;
import android.widget.Switch;
import android.widget.ToggleButton;

/**
 * Description:<br>
 * 网站: <a href="http://www.crazyit.org">疯狂Java联盟</a><br>
 * Copyright (C), 2001-2020, Yeeku.H.Lee<br>
 * This program is protected by copyright laws.<br>
 * Program Name:<br>
 * Date:<br>
 *
 * @author Yeeku.H.Lee kongyeeku@163.com<br>
 * @version 1.0
 */
public class MainActivity extends Activity
{
	@Override
	public void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		ToggleButton toggle = findViewById(R.id.toggle);
		Switch switcher = findViewById(R.id.switcher);
		LinearLayout test = findViewById(R.id.test);
		CompoundButton.OnCheckedChangeListener listener = (button, isChecked) -> {
			if (isChecked) {
				// 设置LinearLayout垂直布局
				test.setOrientation(LinearLayout.VERTICAL);
				toggle.setChecked(true);
				switcher.setChecked(true);
			} else {
				// 设置LinearLayout水平布局
				test.setOrientation(LinearLayout.HORIZONTAL);
				toggle.setChecked(false);
				switcher.setChecked(false);
			}
		};
		toggle.setOnCheckedChangeListener(listener);
		switcher.setOnCheckedChangeListener(listener);
	}
}