MyImageViewDemo

Custom ImageView,
set hover effect in ImageView's attribute.

Step 1 : declare-styleable(my_styles.xml)

<declare-styleable name="MyImageViewAttr">
    <attr name="hover_res" format="reference" />
</declare-styleable>

Step 2 : custom ImageView(MyImageView.java)

public class MyImageView extends ImageView {
    ...
}

Step 3 : declare myattr : xmlns:myattr="http://schemas.android.com/apk/res-auto" in layout xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:myattr="http://schemas.android.com/apk/res-auto"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

Step 4 : set myattr:hover_res for MyImageView

<dev.henrychuang.component.MyImageView 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:clickable="true"
            myattr:hover_res="@drawable/icon_home_h"
            android:src="@drawable/icon_home"/>

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