When Android Lollipop was released, I was excited. Who wouldn’t? Every new version always comes packed with new features and enhancements.

Sad to say when I upgraded to Lollipop it gave my app problems instead. Two things my app used, an XML drawable that displays a radial gradient effect and an animated inside an AsyncTask class that uses Thread.sleep in between.

So first, the radial drawable.

I had a custom color and named it theme_green. It worked okay in previous versions but in Lollipop 5.0, the radial effect does not work anymore, and so does the color. It seems like only the startColor is used hence the different color result.

The other issue I had was the Thread.sleep inside the doInBackground() where I had a for loop that shows an animated and used the Thread.sleep to simulate a pause in between animation.

The result was that the animated got slow. I had to switch to using a TimerTask instead to preserve the smoothness of the animated that was working prior to Lollipop 5.0.

Oh, and even SystemClock.sleep() inside doInBackground() did not work either.

So there. Just to give you a heads up that you might think it is the Lollipop 5.0 operating system that is the issue. They definitely changed some things that affected how the Thread.sleep() works inside the doInBackground() method of an AsyncTask class.

Now, this is more like it. After so many searching, I stumbled upon Folkert’s code wherein he was able to create gradient buttons in Android using just XML. That’s right! XML! I never liked having to create a colored button in Android using a 9 patch image. It is a hassle.

No matter what other developers say how easy it is to create a 9 patch image, doing it in XML is better. It is just a matter of copy-paste right? The sample codes for these gradient buttons contain only two color gradients.

The Android SDK permits a third color but for these XML codes, Folkert used only 2 colors. Now, it’s bye bye to those dull gray default Android buttons.

Here are the XML codes:
Blue

Red

Purple

Yellow

Black

All these buttons have the same text style so define a style in strings.xml:

And use it like this

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