android网络状态判断(wifi、3G、2G)

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
    <uses-permission android:name="android.permission.INTERNET"/>

public boolean CheckNetworkState()
    {
        boolean flag = false;
        ConnectivityManager manager = (ConnectivityManager)getSystemService(
                Context.CONNECTIVITY_SERVICE);
        if(manager.getActiveNetworkInfo() != null)
        {
            flag = manager.getActiveNetworkInfo().isAvailable();
        }
        if(!flag)
        {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setIcon(android.R.drawable.ic_dialog_alert);
            builder.setTitle(R.string.netstate);
            builder.setMessage(R.string.setnetwork);
            builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
               
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    Intent mIntent = new Intent("/");
                    ComponentName comp = new ComponentName("com.android.settings",
                            "com.android.settings.WirelessSettings");
                    mIntent.setComponent(comp);
                    mIntent.setAction("android.intent.action.VIEW");
                    startActivity(mIntent);
                }
            });
            builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
               
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.cancel();
                }
            });
            builder.create();
            builder.show();
        }
       
        return flag;
       
    }

//setnetwork
    public void setNetwork()
    {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setIcon(android.R.drawable.ic_dialog_alert);
        builder.setTitle(R.string.netstate);
        builder.setMessage(R.string.setnetwork);
        builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
           
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // TODO Auto-generated method stub
                Intent mIntent = new Intent("/");
                ComponentName comp = new ComponentName("com.android.settings",
                        "com.android.settings.WirelessSettings");
                mIntent.setComponent(comp);
                mIntent.setAction("android.intent.action.VIEW");
                startActivity(mIntent);
            }
        });
        builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
           
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        builder.create();
        builder.show();
    }
   
    //NETWORK
    public boolean isNetworkAvailable()
    {
        Context context = getApplicationContext();
        ConnectivityManager connect = (ConnectivityManager)context.getSystemService(
                Context.CONNECTIVITY_SERVICE);
        if(connect==null)
        {
            return false;
        }else//get all network info
        {
            NetworkInfo[] info = connect.getAllNetworkInfo();
            if(info!=null)
            {
                for(int i=0;i<info.length;i++)
                {
                    if(info[i].getState()==NetworkInfo.State.CONNECTED)
                    {
                        return true;
                    }
                }
            }
        }
        return false;
    }

if(isNetworkAvailable())
{
相关代码
}else
{
setNetwork();
}]

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>

MainActivity.java：

package com.xzq.upload;

import java.io.DataOutputStream;

import java.io.FileInputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity

{

  private String newName = "htys.mp3";

  //要上传的本地文件路径

  private String uploadFile = "/data/data/com.xzq/htys.mp3";

  //上传到服务器的指定位置

  private String actionUrl = "jsp">http://192.168.100.100:8080/upload/upload.jsp";

  private TextView mTextView1;

  private TextView mTextView2;

  private Button mButton1;

  @Override

  public void onCreate(Bundle savedInstanceState)

  {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);

    mTextView1 = (TextView) findViewById(R.id.myText2);

    mTextView1.setText("FilePath：/n" + uploadFile);

    mTextView2 = (TextView) findViewById(R.id.myText3);

    mTextView2.setText("UploadPath：/n" + actionUrl);

    /* 设定mButton的onClick事件处理 */

    mButton1 = (Button) findViewById(R.id.myButton);

    mButton1.setOnClickListener(new View.OnClickListener()

    {

      public void onClick(View v)

      {

        uploadFile();

      }

    });

  }

  private void uploadFile()

  {

    String end = "/r/n";

    String Hyphens = "--";

    String boundary = "*****";

    try

    {

      URL url = new URL(actionUrl);

      HttpURLConnection con = (HttpURLConnection) url.openConnection();

      /* 允许Input、Output，不使用Cache */

      con.setDoInput(true);

      con.setDoOutput(true);

      con.setUseCaches(false);

      /* 设定传送的method=POST */

      con.setRequestMethod("POST");

      /* setRequestProperty */

      con.setRequestProperty("Connection", "Keep-Alive");

      con.setRequestProperty("Charset", "UTF-8");

      con.setRequestProperty("Content-Type",

          "multipart/form-data;boundary=" + boundary);

      /* 设定DataOutputStream */

      DataOutputStream ds = new DataOutputStream(con.getOutputStream());

      ds.writeBytes(Hyphens + boundary + end);

      ds.writeBytes("Content-Disposition: form-data; "

          + "name=/"file1/";filename=/"" + newName + "/"" + end);

      ds.writeBytes(end);

      /* 取得文件的FileInputStream */

      FileInputStream fStream = new FileInputStream(uploadFile);

      /* 设定每次写入1024bytes */

      int bufferSize = 1024;

      byte[] buffer = new byte[bufferSize];

      int length = -1;

      /* 从文件读取数据到缓冲区 */

      while ((length = fStream.read(buffer)) != -1)

      {

        /* 将数据写入DataOutputStream中 */

        ds.write(buffer, 0, length);

      }

      ds.writeBytes(end);

      ds.writeBytes(Hyphens + boundary + Hyphens + end);

      fStream.close();

      ds.flush();

      /* 取得Response内容 */

      InputStream is = con.getInputStream();

      int ch;

      StringBuffer b = new StringBuffer();

      while ((ch = is.read()) != -1)

      {

        b.append((char) ch);

      }

      System.out.println("上传成功");

      Toast.makeText(MainActivity.this, "上传成功", Toast.LENGTH_LONG)

          .show();

      ds.close();

    } catch (Exception e)

    {

      System.out.println("上传失败" + e.getMessage());

      Toast.makeText(MainActivity.this, "上传失败" + e.getMessage(),

          Toast.LENGTH_LONG).show();

    }

  }

}

  <uses-permission android:name="android.permission.INTERNET" />

package com.util.mail;

import java.util.Date;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
 * 发送邮件给多个接收者、抄送邮件
 */
public class MultiMailsender {

   
    /**
      * 以文本格式发送邮件
      * @param mailInfo 待发送的邮件的信息
      */
        public boolean sendTextMail(MultiMailSenderInfo mailInfo) {
          // 判断是否需要身份认证
          MyAuthenticator authenticator = null;
          Properties pro = mailInfo.getProperties();
          if (mailInfo.isValidate()) {
          // 如果需要身份认证，则创建一个密码验证器
            authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
          }
          // 根据邮件会话属性和密码验证器构造一个发送邮件的session
          Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
          try {
          // 根据session创建一个邮件消息
          Message mailMessage = new MimeMessage(sendMailSession);
          // 创建邮件发送者地址
          Address from = new InternetAddress(mailInfo.getFromAddress());
          // 设置邮件消息的发送者
          mailMessage.setFrom(from);
          // 创建邮件的接收者地址，并设置到邮件消息中
          Address[] tos = null;
          String[] receivers = mailInfo.getReceivers();
          if (receivers != null){
              // 为每个邮件接收者创建一个地址
              tos = new InternetAddress[receivers.length + 1];
              tos[0] = new InternetAddress(mailInfo.getToAddress());
              for (int i=0; i<receivers.length; i++){
                  tos[i+1] = new InternetAddress(receivers[i]);
              }
          } else {
              tos = new InternetAddress[1];
              tos[0] = new InternetAddress(mailInfo.getToAddress());
          }

          // Message.RecipientType.TO属性表示接收者的类型为TO
          mailMessage.setRecipients(Message.RecipientType.TO,tos);
          // 设置邮件消息的主题
          mailMessage.setSubject(mailInfo.getSubject());
          // 设置邮件消息发送的时间
          mailMessage.setSentDate(new Date());
          // 设置邮件消息的主要内容
          String mailContent = mailInfo.getContent();
          mailMessage.setText(mailContent);
          // 发送邮件
          Transport.send(mailMessage);
          return true;
          } catch (MessagingException ex) {
              ex.printStackTrace();
          }
          return false;
        }
    /**
     * 发送邮件给多个接收者,以Html内容
     * @param mailInfo    带发送邮件的信息
     * @return
     */
    public static boolean sendMailtoMultiReceiver(MultiMailSenderInfo mailInfo){
        MyAuthenticator authenticator = null;
        if (mailInfo.isValidate()) {
            authenticator = new MyAuthenticator(mailInfo.getUserName(),
                    mailInfo.getPassword());
        }
        Session sendMailSession = Session.getInstance(mailInfo
                .getProperties(), authenticator);
        try {
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(mailInfo.getFromAddress());
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            Address[] tos = null;
            String[] receivers = mailInfo.getReceivers();
            if (receivers != null){
                // 为每个邮件接收者创建一个地址
                tos = new InternetAddress[receivers.length + 1];
                tos[0] = new InternetAddress(mailInfo.getToAddress());
                for (int i=0; i<receivers.length; i++){
                    tos[i+1] = new InternetAddress(receivers[i]);
                }
            } else {
                tos = new InternetAddress[1];
                tos[0] = new InternetAddress(mailInfo.getToAddress());
            }
            // 将所有接收者地址都添加到邮件接收者属性中
            mailMessage.setRecipients(Message.RecipientType.TO, tos);
           
            mailMessage.setSubject(mailInfo.getSubject());
            mailMessage.setSentDate(new Date());
            // 设置邮件内容
            Multipart mainPart = new MimeMultipart();
            BodyPart html = new MimeBodyPart();
            html.setContent(mailInfo.getContent(), "text/html; charset=GBK");
            mainPart.addBodyPart(html);
            mailMessage.setContent(mainPart);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
        return false;
    }
   
    /**
     * 发送带抄送的邮件
     * @param mailInfo    待发送邮件的消息
     * @return
     */
    public static boolean sendMailtoMultiCC(MultiMailSenderInfo mailInfo){
        MyAuthenticator authenticator = null;
        if (mailInfo.isValidate()) {
            authenticator = new MyAuthenticator(mailInfo.getUserName(),
                    mailInfo.getPassword());
        }
        Session sendMailSession = Session.getInstance(mailInfo
                .getProperties(), authenticator);
        try {
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(mailInfo.getFromAddress());
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            Address to = new InternetAddress(mailInfo.getToAddress());
            mailMessage.setRecipient(Message.RecipientType.TO, to);
           
            // 获取抄送者信息
            String[] ccs = mailInfo.getCcs();
            if (ccs != null){
                // 为每个邮件接收者创建一个地址
                Address[] ccAdresses = new InternetAddress[ccs.length];
                for (int i=0; i<ccs.length; i++){
                    ccAdresses[i] = new InternetAddress(ccs[i]);
                }
                // 将抄送者信息设置到邮件信息中，注意类型为Message.RecipientType.CC
                mailMessage.setRecipients(Message.RecipientType.CC, ccAdresses);
            }
           
            mailMessage.setSubject(mailInfo.getSubject());
            mailMessage.setSentDate(new Date());
            // 设置邮件内容
            Multipart mainPart = new MimeMultipart();
            BodyPart html = new MimeBodyPart();
            html.setContent(mailInfo.getContent(), "text/html; charset=GBK");
            mainPart.addBodyPart(html);
            mailMessage.setContent(mainPart);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
        return false;
    }
   
    /**
     * 发送多接收者类型邮件的基本信息
     */
    public static class MultiMailSenderInfo extends MailSenderInfo{
        // 邮件的接收者，可以有多个
        private String[] receivers;
        // 邮件的抄送者，可以有多个
        private String[] ccs;
       
        public String[] getCcs() {
            return ccs;
        }
        public void setCcs(String[] ccs) {
            this.ccs = ccs;
        }
        public String[] getReceivers() {
            return receivers;
        }
        public void setReceivers(String[] receivers) {
            this.receivers = receivers;
        }
    }
}

MyAuthenticator.java

package com.util.mail;
 
import javax.mail.*;
  
public class MyAuthenticator extends Authenticator{
    String userName=null;
    String password=null;
     
    public MyAuthenticator(){
    }
    public MyAuthenticator(String username, String password) {
        this.userName = username;
        this.password = password;
    }
    protected PasswordAuthentication getPasswordAuthentication(){
        return new PasswordAuthentication(userName, password);
    }
}

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

content://sms/inbox

new String[] {"_id", "address", "body", "read"｝

"address=? and read=?"

new String[] { "15061978220", "1" }

"date desc"

String smsbody = cursor.getString(cursor.getColumnIndex("body"));

String code = smsbody.substring(smsbody.indexOf(",") +1， smsbody.indexOf("."));

package my.learn.ReadSMS;

import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class ReadSMSActivity extends Activity {
    // final String SMS_URL_INBOX="content://sms/inbox";
    private Button mybtn;
    private TextView mtTxt;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mybtn = (Button) findViewById(R.id.clickButton);
        mtTxt = (TextView) findViewById(R.id.showTxt);
    }

    public void doReadSMS(View view) {
        Cursor cursor = null;// 光标
        cursor = managedQuery(Uri.parse("content://sms/inbox"), new String[] {
                "_id", "address", "body", "read" }, "address=? and read=?",
                new String[] { "15061978220", "1" }, "date desc");
        if (cursor != null) {// 如果短信为已读模式
            cursor.moveToFirst();
            if (cursor.moveToFirst()) {

                String smsbody = cursor
                        .getString(cursor.getColumnIndex("body"));
                String code = smsbody.substring(smsbody.indexOf(",") + 1,
                        smsbody.indexOf("."));
                mtTxt.setText(code.toString());
            }

        }

    }
}