1 package com.itheima.logcat;
 2 
 3 import android.os.Bundle;
 4 import android.app.Activity;
 5 import android.util.Log;
 6 import android.view.Menu;
 7 
 8 public class MainActivity extends Activity {
 9 
10     private static final String tag = "MainActivity";
11 
12     @Override
13     protected void onCreate(Bundle savedInstanceState) {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.activity_main);
16         
17         Log.v(tag, "我是v级别"); 对应的是蓝色
18         Log.i(tag, "我是i级别"); 绿色
19         Log.d(tag, "我是d级别"); 黑色
20         Log.w(tag, "我是w级别"); 黄色
21         Log.e(tag, "我是e级别"); 红色
22     }
23 
24     @Override
25     public boolean onCreateOptionsMenu(Menu menu) {
26         // Inflate the menu; this adds items to the action bar if it is present.
27         getMenuInflater().inflate(R.menu.main, menu);
28         return true;
29     }
30 
31 }