1. brief introduction:
The method of printing log has Andrews 5, respectively:
1.Log.v () - the VERBOSE
2.Log.d () - the DEBUG
3.Log.i () - the INFO
4.Log.w () - WARN
5 .Log.e () - ERROR
Intensity increment from top to bottom
Log section and constant source explained:
/**
* Priority constant for the println method; use Log.v.
*/
public static final int VERBOSE = 2;
/**
* Priority constant for the println method; use Log.d.
*/
public static final int DEBUG = 3;
/**
* Priority constant for the println method; use Log.i.
*/
public static final int INFO = 4;
/**
* Priority constant for the println method; use Log.w.
*/
public static final int WARN = 5;
/**
* Priority constant for the println method; use Log.e.
*/
public static final int ERROR = 6;
/**
* Priority constant for the println method.
*/
public static final int ASSERT = 7;
2. Logcat simple tutorial
STEP 1: TAG, ie logs labels, we recommend using the class name + XX, it is easy to find places to print the log, it will not be confused and logging system
private static final String TAG = "MainActivityLog";
Then call Log method where needed to write the log, give chestnuts
Log.d(TAG,"onCreate()方法被调用");
Step Two: Click the drawing position of the box, the default option is the arrow pointing to the
third step: open the drop-down menu, select Edit filter Configuration options
Step 4: Click +, fill in the Tag value is just the first step in setting that, selection ok
last: drop-down box to select the filter just your own set, Logcat will only print the log what you've set up
