无法在Android中应用colorfilter？

Question

{
    final ImageView DNIcon_id = (ImageView) findViewById(R.id.DNIcon_id);
    DNIcon_id.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {


            sp.play(DN_id, 1, 1, 1, 0, 1);
            switch (event.getAction()) {

                case (MotionEvent.ACTION_BUTTON_PRESS): {

                    DNIcon_id.setColorFilter(Color.GRAY, PorterDuff.Mode.LIGHTEN);
                    break;
                }
                case (MotionEvent.ACTION_BUTTON_RELEASE): {
                    DNIcon_id.clearColorFilter();
                    break;
                }

            }
            return true;


        }

    });
}
}

维达尔

Answer 1

将其添加到res/values/colors.xml

<color name="opaque">#90FFFFFF</color>

创建res/drawable/overlay.xml并将其放入

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/opaque" android:state_pressed="true"/>
    <item android:drawable="@android:color/transparent"/>
</selector>

下面是一个如何使用它的示例

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="150dp"
    android:layout_height="150dp">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/your_image_here"/>

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/overlay"/>

</FrameLayout>