Android Performance Optimization--anr

One, ANR (application not responding) (responsiveness by Activity Manager and window manager monitoring) classification

Service Timeout 20s

Broadcastqueue Timeout 10s

Input dispatching 5s

Second, the cause of the ANR

The main thread has done some time-consuming work

The main thread is locked by another thread (the resources required by the main thread are being used by other threads)

CPU is occupied by other processes

Third, how to solve the ANR

1. Main thread read data (main thread can not get network data, can get local data)

Tip:sharepreference commit ()/apply ()//Do not submit data using commit () in the main thread

2. Do not take time-consuming action in the Broadcastreceive OnReceive () method

Thread/intentservice Increase Priority

There should be too much time-consuming operation in the life cycle function of 3.Activity

Iv. ANR Monitoring-third party open Source Library Watchdog-anr

1. Create a monitoring thread

2. The thread continues to post a task to the UI thread (i++)

3. Fixed time of sleep

4. Wait until the thread is back up to monitor if the Post's task is executed (same as ANR)

Android Performance Optimization--anr