android 61 logcat

package com.itheima.logcat;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;

//logCat是环形缓冲区(内存)，一旦写满就清除最老的，
public class MainActivity extends Activity {

private static  final String tag = "MainActivity";//当前的Activity

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.v(tag , "我是v级别的log打印");//黑色,提示verbosr，全部日志
Log.d(tag , "我是d级别的log打印");//蓝色，debug调试
Log.i(tag , "我是i级别的log打印");//绿色,info
Log.w(tag , "我是w级别的log打印");//黄色，warning警告
Log.e(tag , "我是e级别的log打印");//红色，error代表错误
}
}