自定义动态设置check图片的ImageView取代checkBox

        本来checkBox是可以使用的，但是现在新需求里要增加一个状态是disabled，disabled状态要展示特定的图片，这个checkBox解决不了，而且状态也不好控制，所以干脆自己封装一个算了。

         先定义一个自定义attrs：

         

<?xml version="1.0" encoding="utf-8"?><resources>    <declare-styleable name="ImageViewCheckBox">        <attr name="default_state" format="integer" />        <attr name="checked_bkg" format="reference" />        <attr name="unchecked_bkg" format="reference" />        <attr name="checked_disabled" format="reference" />    </declare-styleable></resources>

        然后写这个自定义的imageView

package com.amuro.main;import com.amuro.imageviewcheckboxtest.R;import android.content.Context;import android.content.res.TypedArray;import android.util.AttributeSet;import android.view.View;import android.widget.ImageView;public class ImageViewCheckBox extends ImageView{public static final int CHECK_STATE_DISABLED = 0;public static final int CHECK_STATE_UNCHECKED = 1;public static final int CHECK_STATE_CHECKED = 2;private int check_bkg_id;private int uncheck_bkg_id;private int disable_check_bkg_id;private int checkState;public ImageViewCheckBox(Context context){this(context, null);}public ImageViewCheckBox(Context context, AttributeSet attrs){this(context, attrs, 0);}public ImageViewCheckBox(Context context, AttributeSet attrs, int defStyleAttr){super(context, attrs, defStyleAttr);init(attrs);}private void init(AttributeSet attrs){TypedArray t = getContext().obtainStyledAttributes(attrs, R.styleable.ImageViewCheckBox); checkState = t.getInteger(R.styleable.ImageViewCheckBox_default_state, CHECK_STATE_UNCHECKED);check_bkg_id = t.getResourceId(R.styleable.ImageViewCheckBox_checked_bkg, 0);uncheck_bkg_id = t.getResourceId(R.styleable.ImageViewCheckBox_unchecked_bkg, 0);disable_check_bkg_id = t.getResourceId(R.styleable.ImageViewCheckBox_checked_disabled, 0);setBkgByCheckState();setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){changeState();}});t.recycle();}public void changeState(){if(checkState == CHECK_STATE_DISABLED){return;}if(checkState == CHECK_STATE_UNCHECKED){checkState = CHECK_STATE_CHECKED;}else if(checkState == CHECK_STATE_CHECKED){checkState = CHECK_STATE_UNCHECKED;}setBkgByCheckState();notifyListner();}public void setCheckDisabled(){this.checkState = CHECK_STATE_DISABLED;setBkgByCheckState();}private void setBkgByCheckState(){if(checkState == CHECK_STATE_UNCHECKED){setBackgroundResource(uncheck_bkg_id);}else if(checkState == CHECK_STATE_DISABLED){setBackgroundResource(disable_check_bkg_id);}else{setBackgroundResource(check_bkg_id);}}public interface OnCheckStateChangedListener{public void onCheckStateChanged(boolean isChecked);}private OnCheckStateChangedListener listener;public void setOnCheckStateChangedListener(OnCheckStateChangedListener listener){this.listener = listener;}private void notifyListner(){if(this.listener != null){if(checkState == CHECK_STATE_UNCHECKED){this.listener.onCheckStateChanged(false);}else if(checkState == CHECK_STATE_CHECKED){this.listener.onCheckStateChanged(true);}}}}

        imageView直接封装了click事件，各种状态下对应的图片都可直接从配置文件中读取，用户点击的时候直接进行图片的切换模拟checkBox效果，disable状态下changeState方法将直接无效。回调的形式和checkbox一样，使用者会感觉很亲切，哈哈。

最后使用的时候在xml里配置一下这个imageView就可以了：

         

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res/com.amuro.imageviewcheckboxtest"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >        <com.amuro.main.ImageViewCheckBox         android:id="@+id/ivcb"        android:layout_width="40dp"        android:layout_height="40dp"        app:default_state="1"        app:checked_bkg="@drawable/paysdk2_icon_virtual_ticket_selected"        app:unchecked_bkg="@drawable/paysdk2_icon_virtual_ticket_unselected"        app:checked_disabled="@drawable/paysdk2_icon_virtual_ticket_select_disabled"        /></LinearLayout>

        以上，感谢收看~