KDAB's Android gems
Build your UI layout Android Studio includes a layout editor that allows you to build and preview your app UI by dragging elements into a visual design editor instead of writing layout XML by hand.
Profile your app performance Poor app performance can ruin the user experience and destroy your app's reputation. If it ever responds slowly, shows choppy animations, freezes, crashes, or consumes a lot of power, your users will notice. To avoid these performance problems, use the Android Profiler to measure your app's memory, CPU, and network usage.