2.WifiManagerExample.java
package tw.nicky.WifiManagerExample; import android.app.Activity; import android.content.Context; import android.net.wifi.WifiManager; import android.os.Bundle; import android.view.View; import android.widget.Button; public class WifiManagerExample extends Activity { private WifiManager wiFiManager; private Button turnOnWifiButn; private Button turnOffWifiButn; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 取得WifiManager wiFiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE); turnOnWifiButn = (Button) findViewById(R.id.turnOnWifiButn); turnOffWifiButn = (Button) findViewById(R.id.turnOffWifiButn); // 開啟wifi turnOnWifiButn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //若wifi狀態為關閉則將它開啟 if (!wiFiManager.isWifiEnabled()) { wiFiManager.setWifiEnabled(true); } } }); // 關閉wifi turnOffWifiButn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //若wifi狀態為開啟則將它關閉 if (wiFiManager.isWifiEnabled()) { wiFiManager.setWifiEnabled(false); } } }); } }
3. main.xml(Layout)
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <Button android:text="開啟Wifi" android:id="@+id/turnOnWifiButn" android:layout_width="wrap_content" android:layout_height="wrap_content"> </Button> <Button android:text="關閉Wifi" android:id="@+id/turnOffWifiButn" android:layout_width="wrap_content" android:layout_height="wrap_content"> </Button> </LinearLayout>4. AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="tw.nicky.WifiManagerExample" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".WifiManagerExample" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission> <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> </manifest>
5. 執行畫面
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