初识Activity

Source_code:

 1 package com.example.metrox.l1;
 2 
 3 import android.content.Intent;
 4 import android.net.Uri;
 5 import android.support.v7.app.AppCompatActivity;
 6 import android.os.Bundle;
 7 import android.view.View;
 8 
 9 public class MainActivity extends AppCompatActivity {
10 
11     @Override
12     protected void onCreate(Bundle savedInstanceState) {
13         super.onCreate(savedInstanceState);
14         setContentView(R.layout.metrox);
15         findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
16             @Override
17             public void onClick(View view) {
18                 startActivity(new Intent(MainActivity.this,Main2Activity.class));
19             }
20         });
21     }
22     public void myEvent(View v){
23         startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.cnblogs.com/linhongquan/")));
24     }
25 }