What methods can be used to determine the causes of slow application loading?

To identify the causes of slow Android app startup, the following methods can be used:

• Profiling with Android Profiler in Android Studio — allows tracking CPU, memory, network usage, and startup time.
• Logging startup time — adding logs in lifecycle methods (e.g., in onCreate) to understand which operations take a lot of time.
• Using Traceview or Systrace — for detailed performance analysis and bottleneck identification.
• Analyzing database and network operations — checking if I/O operations block the main thread.
• Checking component initialization — sometimes slow startup is related to heavy initialization of libraries or resources.

Example of logging load time:

long startTime = System.currentTimeMillis();
// initialization
long endTime = System.currentTimeMillis();
Log.d("AppStart", "Initialization took: " + (endTime - startTime) + " ms");

These methods will help identify at which stages delays occur and optimize the startup.