Android Error Logging

How do 开发者_运维百科i retrieve the error logs of my application from device (and send them over the internet to a server)?

(Assuming you are using log framework from android.util.Log package.)

You can start "logcat" process with specific parameters from within your process. It will dump last 16k of logs (16k - is default for my phone, it can be different on other phones).

Here is an example of command line that dumps all logs: logcat -d -f /mnt/sdcard/log-dump.txt
Another example that dumps errors from all applications: logcat -d -f /mnt/sdcard/err-dump.txt *:e

You'll need to launch the process from within your application programatically. And then process log-dump.txt/err-dump.txt in the way you want.

You also may want to monitor logs longer then those default 16k can allow you. For this you'll need to start logcat without -d parameter. If this is done, logcat process will write logs to file for as long as you want. When you are done just kill logcat process.

In any case you can look & test manually logcat using adb logcat <params> from you computer.

I think you need to implement the try_catch block.

try
{

}
catch(Exception e)
{
   Log.e("Exception found ",e.getMessage);
   // post the exception message to your server
}

This way you can send the error log messages to the server.