操作手機wifi（開啟、關閉、擷取串連資訊）

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頁面配置：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <Button        android:id="@+id/state"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/start"        android:layout_below="@+id/start"        android:layout_marginTop="75dp"        android:onClick="StateButton"        android:text="state" />    <Button        android:id="@+id/stop"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/state"        android:layout_below="@+id/start"        android:layout_marginTop="15dp"        android:onClick="StopButton"        android:text="stop" />    <Button        android:id="@+id/start"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/textView1"        android:layout_below="@+id/textView1"        android:layout_marginTop="24dp"        android:onClick="StartButton"        android:text="start" />         <Button        android:id="@+id/list"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/textView1"        android:layout_below="@+id/textView1"        android:layout_marginTop="250dp"        android:onClick="ListButton"        android:text="getList" /></RelativeLayout>

 

三個按鈕：第一個開啟wifi，第二個關閉wifi，第三個擷取搜尋到的wifi資訊

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activity：

public class MainActivity extends Activity {    WifiManager wifiManage;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        wifiManage = (WifiManager) this.getSystemService(WIFI_SERVICE);//擷取 wifi管理者    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }/** * wifi管理者的各種方法可用於判斷wifi狀態、操控wifi開啟和關閉 * @param v */    public void StartButton(View v){        System.out.println("start");        if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_DISABLED){            wifiManage.setWifiEnabled(true);//開啟wifi        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_DISABLING){            System.out.println("正在關閉");        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_ENABLING){            System.out.println("正在開啟");        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_ENABLED){            System.out.println("早已開啟");        }    }    public void StopButton(View v){        System.out.println("stop");        System.out.println("start");        if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_DISABLED){            System.out.println("早已關閉");        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_DISABLING){            System.out.println("正在關閉");        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_ENABLING){            System.out.println("正在開啟");        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_ENABLED){            wifiManage.setWifiEnabled(false);//關閉wifi        }    }    public void StateButton(View v){        System.out.println("state");        System.out.println("start");        if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_DISABLED){            System.out.println(wifiManage.getWifiState());        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_DISABLING){            System.out.println(wifiManage.getWifiState());        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_ENABLING){            System.out.println(wifiManage.getWifiState());        }else if(wifiManage.getWifiState()==wifiManage.WIFI_STATE_ENABLED){            System.out.println(wifiManage.getWifiState());        }    }        public void ListButton(View v) {        //擷取wifi列表的list        List<WifiConfiguration> netWorkList = wifiManage.getConfiguredNetworks();        //擷取wifi資訊        System.out.println(netWorkList.get(0).SSID);        System.out.println(netWorkList.get(1).SSID);        System.out.println(netWorkList.get(2).SSID);        System.out.println(netWorkList.get(3).SSID);    }}

 

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總結：

1、wifi狀態

　　

wifiManage.WIFI_STATE_DISABLED//wifi不可用wifiManage.WIFI_STATE_DISABLING//wifi正在關閉wifiManage.WIFI_STATE_ENABLING//wifi正在開啟wifiManage.WIFI_STATE_ENABLED//wifi可用wifiManage.getWifiState()//擷取wifi目前狀態

 

 

2、操作wifi

wifiManage.setWifiEnabled(false);//關閉wifiwifiManage.setWifiEnabled(true);//開啟wifi

 

 

3、擷取wifi列表

List<WifiConfiguration> netWorkList =wifiManage.getConfiguredNetworks();

 

4、擷取管理者

wifiManage = (WifiManager) this.getSystemService(WIFI_SERVICE);

 

即:擷取系統服務----wifi管理者

 

操作手機wifi（開啟、關閉、擷取串連資訊）