1 package com.example.test;
 2 
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.util.Log;
 6 import android.view.Menu;
 7 import android.view.MenuItem;
 8 
 9 
10 public class MainActivity extends Activity {
11     private final String tag = "MainActivity";
12     @Override
13     protected void onCreate(Bundle savedInstanceState) {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.activity_main);
16         
17        //System.out.println(1/0);
18      
19         Log.v(tag, "我是v");
20         Log.d(tag, "我是d");
21         Log.i(tag, "我是i");
22         Log.w(tag, "我是w");
23         Log.e(tag, "我是e");
24         System.out.println("呵呵");
25     }46 }