Android study note 04. debugging

1. debugging

Method 1 is displayed in the logcat in ddms or in the showview I mentioned earlier.

Then pass system. Put. println ("test successful! "); This method of adding

 

Method 2:

Output debugging information: log. D ("debugging information tag (corresponding to by log tag)", "Output Message ")

Log. E (...)

2. File removal and input: Put the pull a file from the device in file explorer in ddms. If the file in file explorer is not displayed, you can start the project and

Reset ADB display

 

3. Common Errors:

Check the exception in the log in logcat. If it starts with "android" or "com.", it is written by the system.ProgramYou just need to check the number of wrong lines of the program we wrote.