用ToggleButton和ImageView实现不同状态下显示的切换

靠，写的时候第一次因为把implements OnCheckedChangeListener这里实现的接口写错了，搞了很久，

后来发现又少了这两句错了

btn = (ToggleButton) findViewById(R.id.toggleButton1);
view = (ImageView) findViewById(R.id.imageView1);

后来又发现把这里private ImageView view;的Imageview写成ImageButton了

够了够了，细心细心

1：空间设置代码：

<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" >

    <ToggleButton
        android:id="@+id/toggleButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:text="ToggleButton" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/toggleButton1"
        android:layout_marginTop="102dp"
        android:background="@drawable/off" />

</RelativeLayout>

２：主文件

package com.g.Deng;

import android.media.ToneGenerator;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.ToggleButton;

public class MainActivity extends Activity implements OnCheckedChangeListener{
    //定义两个控件
    private ToggleButton btn;
    private ImageView view;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //一定不要忘记这里，给两个空间附初值
        btn = (ToggleButton) findViewById(R.id.toggleButton1);
        view = (ImageView) findViewById(R.id.imageView1);
        /**
         * 设置监听器
         */
        btn.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
        // TODO Auto-generated method stub
        //用arg1监听空间的状态，如果为真就打开，如果为假就关闭
        view.setBackgroundResource(arg1?R.drawable.on:R.drawable.off);
    }

}