ToggleButton有两种状态:选中和未选择状态,并且需要为不同的状态设置不同的显示文本。首先先看一下效果:
下面看一下ToggleButton的用法(相关的代码):
main.xml的布局文件
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:id="@+id/imageView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/bulb_off" android:layout_gravity="center_horizontal" /> <ToggleButton android:id="@+id/toggleButton" android:layout_width="140dip" android:layout_height="wrap_content" android:textOn="开灯" android:textOff="关灯" android:layout_gravity="center_horizontal" /> </LinearLayout>
ToggleButtonActivity类
package com.ljq.tb;
import android.app.Activity; import android.os.Bundle; import android.widget.CompoundButton; import android.widget.ImageView; import android.widget.ToggleButton; import android.widget.CompoundButton.OnCheckedChangeListener;
public class ToggleButtonActivity extends Activity { private ImageView imageView=null; private ToggleButton toggleButton=null;
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main);
imageView=(ImageView) findViewById(R.id.imageView); toggleButton=(ToggleButton)findViewById(R.id.toggleButton); toggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener(){
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { toggleButton.setChecked(isChecked); imageView.setImageResource(isChecked?R.drawable.bulb_on:R.drawable.bulb_off); }
}); } }
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