Android: Drawable not showing up

Question

I have a fairly simple xml file that has an image button in it. The image shows up fine on the Graphical Layout xml designer, shows up fine when I run a development build, but a

Answer 1

My situation was weird.Everything was correct until integrating FireBase Crash report to my Application.

I just added compile 'com.google.firebase:firebase-crash:11.0.1' & DrawableLeft vanished .When i went through the xml , noticed a warning (In lined below).

So added android:drawableStart & issue gone.

Still I am wondering about the relation of FireBase Crash reporting to the same.

Using left/right instead of start/end attributes Using Gravity#LEFT and Gravity#RIGHT can lead to problems when a layout is rendered in locales where text flows from right to left. Use Gravity#START and Gravity#END instead.

Similarly, in XML gravity and layout_gravity attributes, use start rather than left. For XML attributes such as paddingLeft and layout_marginLeft, use paddingStart and layout_marginStart.

NOTE: If your minSdkVersion is less than 17, you should add both the older left/right attributes as well as the new start/right attributes. On older platforms, where RTL is not supported and the start/right attributes are unknown and therefore ignored, you need the older left/right attributes.

There is a separate lint check which catches that type of error. (Note: For Gravity#LEFT and Gravity#START, you can use these constants even when targeting older platforms, because the start bitmask is a superset of the left bitmask. Therefore, you can use gravity="start" rather than gravity="left|start".)