[英]How to get wifi hotspot state
我正在手机中创建wifi热点 ,我想在打开或关闭热点时获取状态更改事件。
Please look at the following code. 请查看以下代码。 This will help you
这会对你有所帮助
public class WifiApManager {
private final WifiManager mWifiManager;
public WifiApManager(Context context) {
mWifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
}
/*the following method is for getting the wifi hotspot state*/
public WIFI_AP_STATE getWifiApState() {
try {
Method method = mWifiManager.getClass().getMethod("getWifiApState");
int tmp = ((Integer) method.invoke(mWifiManager));
// Fix for Android 4
if (tmp > 10) {
tmp = tmp - 10;
}
return WIFI_AP_STATE.class.getEnumConstants()[tmp];
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return WIFI_AP_STATE.WIFI_AP_STATE_FAILED;
}
}
/**
* Return whether Wi-Fi Hotspot is enabled or disabled.
*
* @return {@code true} if Wi-Fi AP is enabled
* @see #getWifiApState()
*/
public boolean isWifiApEnabled() {
return getWifiApState() == WIFI_AP_STATE.WIFI_AP_STATE_ENABLED;
}
}
Where WIFI_AP_STATE is an enum which is as follows 其中WIFI_AP_STATE是枚举,如下所示
public enum WIFI_AP_STATE {
WIFI_AP_STATE_DISABLING,
WIFI_AP_STATE_DISABLED,
WIFI_AP_STATE_ENABLING,
WIFI_AP_STATE_ENABLED,
WIFI_AP_STATE_FAILED
}
To get the current state of the hotspot AP, I use: 为了获得热点AP的当前状态,我使用:
final WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
final int apState = (Integer) wifiManager.getClass().getMethod("getWifiApState").invoke(wifiManager);
if (apState == 13) {
// Ap Enabled
}
And to get updates when the hotspot AP gets enabled/disabled, receive the "android.net.wifi.WIFI_AP_STATE_CHANGED" intent in a BroadcastReceiver: 要在启用/禁用热点AP时获取更新,请在BroadcastReceiver中接收“android.net.wifi.WIFI_AP_STATE_CHANGED”意图:
public class WifiAPReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction() == "android.net.wifi.WIFI_AP_STATE_CHANGED") {
int apState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 0);
if (apState == 13) {
// Hotspot AP is enabled
} else {
// Hotspot AP is disabled/not ready
}
}
}
}
Also, don't forget your declaration and permissions in the Manifest: 另外,不要忘记您在Manifest中的声明和权限:
<receiver android:name=".WifiAPReceiver">
<intent-filter>
<action android:name="android.net.wifi.WIFI_AP_STATE_CHANGED" />
</intent-filter>
</receiver>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
You can monitor the wifi state with a BroadcastReciver. 您可以使用BroadcastReciver监控wifi状态。 Here's an example of how to implement it: http://silverballsoftware.com/android-monitor-wifi-state-with-broadcastreceiver
以下是如何实现它的示例: http : //silverballsoftware.com/android-monitor-wifi-state-with-broadcastreceiver
try this 试试这个
Write this code into OnCreate() method 将此代码写入OnCreate()方法
ConnectivityManager cm = (ConnectivityManager) getSystemService(con.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
Success
}
else {
Give Some Error Message
}
also mention necessary permission to manifest file 还提到了清单文件的必要权限
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