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I would like to add text to a layer-list xml file that is used as a drawable background for a Switch element. The problem is the text in the switch element changes before the background does so to sync these I thought I could just put the text into the background instead of setting android:textOn and android:textOff. Or if you know of another attribute besides android:state_checked that I can use that will change when the text in the Switch element does, I will accept that as an answer.
My current layer list, which contains an icon and a background color looks like this:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_checked="true">
<shape>
<solid
android:color="@color/btn_switch_electricity" />
<corners
android:radius="5dp" />
</shape>
</item>
<item android:right="10dp">
<bitmap
android:gravity="right"
android:src="@drawable/ic_toggle_electricity" />
</item>
</layer-list>
So to summarize, is it possible to render some text in this layer-list?
Thanks in advance for your helpful comments/answers.
953
One way to add Texts in your drawable layer-list is by creating a png file of the text and adding it using bitmap.
Layer list. A LayerDrawable is a drawable object that manages an array of other drawables. Each drawable in the list is drawn in the order of the list—the last drawable in the list is drawn on top.
This is used to control the behavior of miter joins when the joins angle is sharp. This value must be >= 0.
With the new api21 you can use VectorDrawables to do something like you want. Here is an example:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true">
<shape>
<solid android:color="@android:color/white"/>
<corners android:radius="5dp"/>
</shape>
</item>
<item android:drawable="@drawable/vector"/>
</layer-list>
That will use a drawable vector like the following:
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:height="32dp"
android:width="32dp"
android:viewportHeight="200"
android:viewportWidth="200">
<path android:name="text"
android:fillColor="@android:color/black"
android:pathData="M 28.53,92.12
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42.31,90.00 42.67,90.52 42.67,91.09
42.67,91.64 42.28,92.12 41.73,92.12
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155.06,98.44 155.00,98.02 155.00,97.77
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163.45,105.70 164.27,106.34 164.27,107.36 Z"/>
</vector>
This will generate a list-layer drawable like the following:
Most image tools (gimp, photoshop, illustrator, etc.) give you the ability to export the path that can be used for the vector graphic.
Checkout the gist at github!
175
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