Drawable Resource - Orange168/NotesOnReading GitHub Wiki
####Layer List 2015-11-06 08:10:28 星期五
- SEE ALSO: LayerDrawable
final TextView tv = (TextView)findViewById(R.id.image_test);
final LayerDrawable ld = (LayerDrawable)tv.getBackground();
tv.post(new Runnable() {
@Override
public void run() {
Log.d(TAG, "onPreDraw tv height is " + tv.getHeight());
int height = tv.getHeight();
int topInset = height / 2;
ld.setLayerInset(1, 0, topInset, 0, 0);
tv.setBackgroundDrawable(ld);
}
});-
FILE LOCATION:
res/drawable/filename.xml -
SYNTAX:
<?xml version="1.0" encoding="utf-8"?>
<layer-list
xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:drawable="@[package:]drawable/drawable_resource"
android:id="@[+][package:]id/resource_name"
android:top="dimension"
android:right="dimension"
android:bottom="dimension"
android:left="dimension" />
</layer-list>- EXAMPLE:
res/drawable/layers.xml:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<bitmap android:src="@drawable/android_red"
android:gravity="center" />
</item>
<item android:top="10dp" android:left="10dp">
<bitmap android:src="@drawable/android_green"
android:gravity="center" />
</item>
<item android:top="20dp" android:left="20dp">
<bitmap android:src="@drawable/android_blue"
android:gravity="center" />
</item>
</layer-list>
<!--layout XML-->
<ImageView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="@drawable/layers" />