Androdi 开发学习四 Activity和Intent

 1 package com.helloworld1;
 2 
 3 import android.app.Activity;
 4 import android.content.Intent;
 5 import android.support.v7.app.ActionBarActivity;
 6 //import android.content.DialogInterface.OnClickListener;
 7 import android.os.Bundle;
 8 import android.view.Menu;
 9 import android.view.View;
10 import android.view.View.OnClickListener;
11 import android.view.MenuItem;
12 import android.widget.Button;
13 import android.widget.TextView;
14 import android.content.DialogInterface;
15 
16 
17 public class MainActivity extends ActionBarActivity {
18 
19     @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         super.onCreate(savedInstanceState);
22         setContentView(R.layout.activity_main);
23         TextView myTextView = (TextView)findViewById(R.id.MyTextView);
24         Button myButtonView = (Button)findViewById(R.id.MyButtonView);
25         myTextView.setText("我的第一个Text View");
26         myButtonView.setText("我的第一个Button View" + "\n" + "guolong");
27         findViewById(R.id.MyButtonView).setOnClickListener(new MybuttonListener());  
28 
29     }
30 
31     class MybuttonListener implements OnClickListener
32     {
33         public void onClick(View v) {  
34             Intent intent = new Intent(MainActivity.this, OtherActivity.class);  
35             intent.putExtra("data", "mainActivity");  
36             startActivity(intent);    
37      
38         }
39     }

 1 package com.helloworld1;
 2 
 3 
 4 import android.support.v7.app.ActionBarActivity;
 5 import android.content.Intent;
 6 import android.os.Bundle;
 7 import android.view.Menu;
 8 import android.view.MenuItem;
 9 import android.widget.Button;
10 import android.widget.TextView;
11 
12 public class OtherActivity extends ActionBarActivity{
13     private TextView myTextView = null;
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         // TODO Auto-generated method stub
17         super.onCreate(savedInstanceState);
18         setContentView(R.layout.other_main);
19         Intent intent = getIntent();
20         String value = intent.getStringExtra("data");
21         myTextView = (TextView)findViewById(R.id.MyTextView);
22         myTextView.setText(value);
23     }
24 }