Android log Learning

Android log Learning

When will log files be generated?

1. The program unexpectedly exits the Uncaused Exception.
2. The program forces Force Closed (FC) to close ).
3. The program does not respond to Application No Response (ANR ).

When Will ANR be generated?

1. Interface operations (such as Button clicking events) Wait for more than 5 seconds.
2. the execution time in the HandleMessage callback function exceeds 10 seconds.

The Log file directory is in/data/log

The Log file consists of three parts:

1. Basic System Information (memory, CPU, process queue, virtual memory, garbage collection, etc)
2. event information (mainly analyzed)
3. Virtual Machine information, process and Thread tracking information (Dalvik Thread)

How to understand the meaning of Android phone log

Log analysis is available in every programming language. What language do you learn.

How can I use Log output developed by Android and install it?

Android Log does not need to be installed. android is built in. To enter Log information, you only need Log. v ("tag name", "output information"); or Log. I ("tag name", "output information"); Log. e ("tag name", "output information"); Log. d ("tag name", "output information"); Log. w ("tag name", "output information"); then, your output information is displayed in Logcat. The Logcat view can be opened as follows: window-> show view-> others...-> select Logcat-> OK