1 package com.fry.logcatTest;
 2 
 3 
 4 
 5 
 6 
 7 import android.app.Activity;
 8 import android.content.Intent;
 9 import android.os.Bundle;
10 import android.util.Log;
11 import android.view.View;
12 import android.view.View.OnClickListener;
13 import android.widget.Button;
14 
15 
16 
17 public class MainActivity extends Activity{
18      protected void onCreate(Bundle savedInstanceState) {
19             super.onCreate(savedInstanceState);//父类操作
20             setContentView(R.layout.activity_main);//引入名为activity_main的界面
21             Log.v("MainActivity", "v");
22             Log.d("MainActivity", "d");
23             Log.i("MainActivity", "i");
24             Log.w("MainActivity", "w");
25             Log.e("MainActivity", "e");
26         }
27 }