Last week's Android development time breakdown:

21.9% Managing state
17.7% Referring to lifecycle diagrams
15.1% Waiting for Gradle
8.5% Reading the official docs on how to use component x
8.4% Reordering auto-generated ConstraintLayout XML
7.5% Swearing
4.2% Googling “Stack overflow component x is deprecated”
3.9% Googling “Stack overflow implement component x on API 24 or lower”
3.7% Googling “Stack overflow implement component x on API 21 or lower”
3.2% Googling “Stack overflow implement component x on API 19 or lower”
2.9% Googling “Stack overflow callback y called twice”, realising its a feature and not a bug, swearing a lot
2.0% Checking if Flutter is mature yet
1.0% Implementing business logic