How to hide status bar android

Hiding status bar requires your application screen should be full screen.

In order to hide status bar follow below steps.

Step 1)  Your screen don't have title.

requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
                            WindowManager.LayoutParams.FLAG_FULLSCREEN);

Step 2) Copy above code in your activity onCreate method.