Android 小项目之–数据存储【Network】（附源码）

import
 android.app.Activity; 

import
 android.content.Intent;

import
 android.net.Uri;

import
 android.os.Bundle; 

import
 android.view.KeyEvent;

import
 android.widget.EditText;

public
 
class
 networkActivity 
extends
 Activity { 
    
private
 EditText myEditText;
    
/**
 Called when the activity is first created. 
*/

    @Override
    
public
 
void
 onCreate(Bundle savedInstanceState) {

        
super
.onCreate(savedInstanceState);
        setContentView(R.layout.main); 
        
        myEditText
=
(EditText)findViewById(R.id.myEditText4); 
        
    }
    
    @Override
    
public
 
boolean
 onKeyDown(
int
 keyCode, KeyEvent event) {

        
//
 TODO Auto-generated method stub


        
if
(keyCode
==
KeyEvent.KEYCODE_BACK)
        {

            
//
发送邮件地址


            Uri uri
=
Uri.parse(
“
mailto:285735942@qq.com
“
);
            
//
创建intent


            Intent it
=
new
 Intent(Intent.ACTION_SENDTO,uri);
            it.putExtra(android.content.Intent.EXTRA_SUBJECT, 
“
网络存储
“
);
            it.putExtra(android.content.Intent.EXTRA_TEXT, myEditText.getText());
            startActivity(it);
            
this
.finish();
            
return
 
true
;
        }
        
        
return
 
super
.onKeyDown(keyCode, event);
    }
}

import
 java.io.BufferedInputStream;

import
 java.io.InputStream;

import
 java.net.URL;

import
 java.net.URLConnection;

import
 org.apache.http.util.ByteArrayBuffer;

import
 android.app.Activity;

import
 android.os.Bundle;

import
 android.widget.TextView;

public
 
class
 readxmlActivity 
extends
 Activity {

    @Override
    
protected
 
void
 onCreate(Bundle savedInstanceState) {

        
//
 TODO Auto-generated method stub


        
super
.onCreate(savedInstanceState);
        setContentView(R.layout.readxml);
        
        TextView tv
=
(TextView)findViewById(R.id.TextView01);
        
        String msg
=
“”
;
        
try
 {

            URL url
=
new
 URL(
“
http://www.az1314.com/txt/00.txt
“
); 
//
要访问的数据文件


            URLConnection con
=
url.openConnection();
            InputStream is
=
con.getInputStream();
            BufferedInputStream bis
=
new
 BufferedInputStream(is);
            ByteArrayBuffer baf
=
new
 ByteArrayBuffer(
100
);
            
int
 current
=
0
;
            
while
 ((current
=
bis.read())
!=
 
–
1
) {

                 baf.append((
byte
)current);
            }
            msg
=
new
 String(baf.toByteArray());
            
        } 
catch
 (Exception e) {

            
//
 TODO: handle exception


            msg
=
e.getMessage();
        }
        tv.setText(msg);
    }
}