I updated the android build tools to 21.1.2.
The android lint process noticed some general warnings according some drawables:
This is the build log:
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-mdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-xhdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-xxhdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-ldpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-hdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-mdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-xhdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-xxhdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-ldpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
/opt/.../app/build/intermediates/exploded-aar/com.github.navasmdc/MaterialDesign/1.3/res/drawable-hdpi-v4/sprite_check.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited
As also the appcompat is affected this problem might be a general problem of the build tools. But it's might be a easy fix for you.
In my case, I moved my ic_launcher from all drawable folders to respective mipmap folders.
OR
please add compile 'com.nineoldandroids:library:2.4.+' in your build.gradle file
I updated the android build tools to 21.1.2. The android lint process noticed some general warnings according some drawables:
This is the build log:
As also the appcompat is affected this problem might be a general problem of the build tools. But it's might be a easy fix for you.