Here are the pros and cons of the two approaches:

The second Theme is to set the style to transparent, so that the screen will be transparent instead of black when the program is started, and it will be displayed once the interface is initialized. When the program starts, display the background image first to avoid a black screen. The first type, Theme, is to set a background image.

Setting the background, setting transparency ThemeĪbove, I defined two types of Theme. According to this thinking, can I minimize the initialization work so as to avoid the black screen? The truth is, even if you don't do anything with onCreate, you're still going to flash a black screen, because it takes a certain amount of time to unpack the interface. In other words, you need to process some data before it will be displayed. The main reason for the black screen is that when we start Activity, we need to run onCreate and onResume to display the interface. No way, can only think of how to solve, finally found the following method. A few days ago, Boss responded that every time the machine started the program, it would flash a black screen, which this customer did not accept.

Android studio theme style fullscreen