Dotted line is actually not dotted when app is running on real Android device

Question

in my app I use XML defined vertical dotted line.

Answer 1

Controlling Hardware Acceleration

You can control hardware acceleration at the following levels:

• Application

• Activity

• Window

• View

Application level

Activity level

Window level

getWindow().setFlags(
    WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
    WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED);

View level

myView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);

Reference