Common Debugging commands and tools for Android (1) commands

I. view the memory in command articles:

Use Cases: track the memory usage of processes and check whether memory cannot be recycled. If there is a memory leakage problem in the program, some clues can be seen through the dynamic memory usage.

2. view the available memory allocated by dalvik to each process:

Root @ android:/# getprop

[Dalvik. vm. heapgrowthlimit]: [192 m]: Maximum number of processes that can be allocated to 192 m. If a process exceeds this value, an OOM problem occurs.

[Dalvik. vm. heapmaxfree]: [8 m]

[Dalvik. vm. heapminfree]: [2 m]

[Dalvik. vm. heapsize]: [256 m]: maximum memory allocated to a single virtual machine = 256 m

[Dalvik. vm. heapstartsize]: [8 m]

2. Check the memory usage distribution of the application process:

Root @ android:/# dumpsys meminfo

2. Check the memory occupied by the specified process, such as the phone process.

Root @ android:/# dumpsys meminfo | grep phone

2. Check the memory usage of several specified processes, such as the phone process, phone book process, and information process.

Root @ android:/# dumpsys meminfo | grep-E "phone | mms | contacts"

Memory leakage analysis:

Http://blog.csdn.net/rambomatrix/article/details/17485503

AM debugging:

2. Send broadcast simulation: Run adb shell am broadcast on the command line to send a broadcast. This is often used during debugging.

Parameters following adb shell am broadcast include:
[-A]
[-D ]
[-T ]
[-C [-C ]...]
[-E | -- es ...]
[-- Ez ...]
[-E | -- ei ...]
[-N ]
[-F ] [ ]

Example: adb shell am broadcast-a com. android. test -- es test_string "this is test string" -- ei test_int 100 -- ez test_boolean true description: The blue color is key, the red color is alue, respectively, String type, int type, boolean Type

2 Android AM command line to start the program

Attaching a link is not very common.

Http://blog.csdn.net/sunrock/article/details/5675067

ADB command debugging

Debug version machine:

Adb remount the File System

Adb pull.../Phone.apk g: // extract Phone.apk from the mobile phone and put it on the G drive. If you need to decompile the apk of another machine, you can obtain it like this.

Adb push.../Phone.apk system/app put the modified Phone.apk on the mobile phone. After it is put, the phone process needs to be restarted once.

Root @ android:/ps | grep phone: Find the phone process pid

Root @ android:/kill 1212 kill the phone Process

USER version:

The ROOT root has a high success rate.

Adb shell enters shell

Su get Root permission

Root @ android: // # chmod-R 777 system/grant read and write permissions to the specified directory, and then you can change the files in the directory.

Capture logs

2 Adb logcat

The Android log system maintains multiple cyclic buffers for log messages, and not all messages are sent to the default buffer. To view these additional buffers, use the-B option, the following is a buffer that can be specified:

Radio-view messages contained in the wireless/telephone-related buffer zone

Events-view event-related messages

Main-view master buffer (default buffer)

Common printing methods include:

-V time printing time

-C clears the buffer. You can execute a cleanup operation before printing logs to reduce invalid logs.

-S LOG_TAG: print the log corresponding to the specified log tag

-F file name: Output logs to files

CPU/THREAD View

Check how many threads are running in the current application and how the cpu usage of each thread is. If there is a problem with program writing, some threads are enabled to run in the background but never released, which may seriously affect the program.

Root @ android:/# top-t

You can see the cpu usage of all threads in the email application. This data is useful when analyzing cpu usage problems.

You are welcome to add.