Changing color in a shape inside a layer-list programmatically
android, android-drawable, layerdrawable, shapes
Solution
Ok I found the answer, I just had to put the id of the shape inside the item not in the shape kachel_ticked_style.xml:
<item
android:id="@+id/selectable_kachel_shape">
<shape
android:shape="rectangle" >
<stroke
android:width="5dp"
android:color="@color/headrbar_color" />
</shape>
</item>
And then you can change either the color of the shape calling shape.setColor or the color of the stroke calling shape.setStroke(strokeWidth,strokeColor)
Problem
I am trying to change programmatically the color of the selectable_kachel_shape. Here is the xml file: kachel_ticked_style.xml ``` <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item> <shape android:id="@+id/selectable_kachel_shape" android:shape="rectangle" > <stroke android:width="5dp" android:color="@color/headrbar_color" /> </shape> </item> <item> <rotate android:fromDegrees="45" android:pivotX="120%" android:pivotY="100%" android:toDegrees="45" > <shape android:shape="line" > <stroke android:width="40dp" android:color="@color/headrbar_color" /> </shape> </rotate> </item> <item android:right="5dp" android:top="5dp"> <bitmap android:gravity="top|right" android:src="@drawable/selectable_tiles_check" /> </item> </layer-list> ``` I am calling inside a Fragment the following code ``` LayerDrawable layers = (LayerDrawable) this.getActivity().getResources().getDrawable(R.drawable.kachel_ticked_style); GradientDrawable shape = (GradientDrawable) (layers.findDrawableByLayerId(R.id.selectable_kachel_shape)); shape.setColor(this.getActivity().getResources().getColor(android.R.color.background_dark); ``` 1.Why am I geting a NullPointerException in shape.setColor? 2.How would it be possible to change the color inside a shape, that is inside a layer list, programmatically?