Android获取已连接wifi的热点信息

 1<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2    xmlns:tools="http://schemas.android.com/tools"
 3    android:layout_width="match_parent"
 4    android:layout_height="match_parent"
 5    android:paddingBottom="@dimen/activity_vertical_margin"
 6    android:paddingLeft="@dimen/activity_horizontal_margin"
 7    android:paddingRight="@dimen/activity_horizontal_margin"
 8    android:paddingTop="@dimen/activity_vertical_margin"
 9    tools:context=".MainActivity" >
10
11    <TextView
12        android:id="@+id/textView1"
13        android:layout_width="match_parent"
14        android:layout_height="wrap_content"
15        android:layout_alignLeft="@+id/button1"
16        android:layout_alignParentTop="true"
17        android:layout_marginTop="21dp"
18        android:text="@string/connect_tip" />
19
20    <Button
21        android:id="@+id/button1"
22        android:layout_width="match_parent"
23        android:layout_height="wrap_content"
24        android:layout_below="@+id/textView1"
25        android:layout_centerHorizontal="true"
26        android:layout_marginTop="27dp"
27        android:text="@string/Get_AP_INFO" />
28
29    <TextView
30        android:id="@+id/textView2"
31        android:layout_width="match_parent"
32        android:layout_height="wrap_content"
33        android:layout_alignLeft="@+id/button1"
34        android:layout_alignParentRight="true"
35        android:layout_below="@+id/button1"
36        android:layout_marginTop="30dp"
37        android:text="" />
38
39    <TextView
40        android:id="@+id/textView3"
41        android:layout_width="match_parent"
42        android:layout_height="wrap_content"
43        android:layout_alignLeft="@+id/textView2"
44        android:layout_below="@+id/textView2"
45        android:layout_marginTop="35dp"
46        android:text="" />
47
48    <TextView
49        android:id="@+id/textView4"
50        android:layout_width="match_parent"
51        android:layout_height="wrap_content"
52        android:layout_alignLeft="@+id/textView3"
53        android:layout_below="@+id/textView3"
54        android:layout_marginTop="33dp"
55        android:text="" />
56
57    <TextView
58        android:id="@+id/textView6"
59        android:layout_width="match_parent"
60        android:layout_height="wrap_content"
61        android:layout_alignLeft="@+id/textView5"
62        android:layout_centerVertical="true"
63        android:text="" />
64
65    <TextView
66        android:id="@+id/textView7"
67        android:layout_width="match_parent"
68        android:layout_height="wrap_content"
69        android:layout_alignLeft="@+id/textView6"
70        android:layout_below="@+id/textView6"
71        android:layout_marginTop="25dp" />
72
73    <TextView
74        android:id="@+id/textView5"
75        android:layout_width="match_parent"
76        android:layout_height="wrap_content"
77        android:layout_alignLeft="@+id/textView4"
78        android:layout_below="@+id/textView4"
79        android:layout_marginTop="29dp" />
80
81</RelativeLayout>

 1package com.example.android_get_ap_info;
 2
 3import android.net.DhcpInfo;
 4import android.net.wifi.WifiManager;
 5import android.os.Bundle;
 6import android.app.Activity;
 7import android.view.Menu;
 8import android.widget.Button;
 9import android.view.View;
10import android.widget.TextView;
11
12//由于点击按键需要onClick方法，而这个方法是一个接口，所以要实现该接口
13public class MainActivity extends Activity implements View.OnClickListener {
14
15    private TextView wifi_addr,wifi_mask,wifi_gateway,wifi_dns1,wifi_dns2,wifi_server ;
16    private Button Get_info ;
17
18
19    private WifiManager __WifiManager;
20    private DhcpInfo __DhcpInfo;
21
22    @Override
23    protected void onCreate(Bundle savedInstanceState) {
24        super.onCreate(savedInstanceState);
25        setContentView(R.layout.activity_main);
26
27        //获取控件ID===>R.id.xxx 就是对应布局里的控件
28        Get_info     =  (Button)findViewById(R.id.button1);
29        wifi_addr    =  (TextView)findViewById(R.id.textView2);
30        wifi_mask    =  (TextView)findViewById(R.id.textView3);
31        wifi_gateway =  (TextView)findViewById(R.id.textView4);
32        wifi_server  =  (TextView)findViewById(R.id.textView5);
33        wifi_dns1    =  (TextView)findViewById(R.id.textView6);
34        wifi_dns2    =  (TextView)findViewById(R.id.textView7);
35
36        //获取系统服务==>wifi
37        __WifiManager = ((WifiManager) getSystemService("wifi"));
38        //获取动态节点信息
39        __DhcpInfo = __WifiManager.getDhcpInfo();
40
41        //设置按钮监听
42        Get_info.setOnClickListener(this);
43    }
44
45
46    @Override
47    public boolean onCreateOptionsMenu(Menu menu) {
48        // Inflate the menu; this adds items to the action bar if it is present.
49        getMenuInflater().inflate(R.menu.main, menu);
50        return true;
51    }
52
53
54    @Override
55    public void onClick(View arg0) {
56        // TODO Auto-generated method stub
57        if(R.id.button1 ==  arg0.getId())
58        {
59            wifi_addr.setText("IP地址:" + intToIp(__DhcpInfo.ipAddress));
60            wifi_mask.setText("掩码:" + intToIp(__DhcpInfo.netmask));
61            wifi_gateway.setText("网关:" + intToIp(__DhcpInfo.gateway));
62            wifi_server.setText("服务器:" + intToIp(__DhcpInfo.serverAddress));
63            wifi_dns1.setText("DNS1:" + intToIp(__DhcpInfo.dns1));
64            wifi_dns2.setText("DNS2:" + intToIp(__DhcpInfo.dns2));
65        }
66
67    }
68
69    //转换地址
70    private String intToIp(int paramInt) {
71        return (paramInt & 0xFF) + "." + (0xFF & paramInt >> 8) + "." + (0xFF & paramInt >> 16) + "."
72                + (0xFF & paramInt >> 24);
73    }  
74}