96

我的应用程序中有代码可以检测 Wi-Fi 是否已主动连接。如果启用了飞行模式,该代码将触发 RuntimeException。无论如何,我想在此模式下显示单独的错误消息。如何可靠地检测 Android 设备是否处于飞行模式?

4

13 回答 13

145
/**
* Gets the state of Airplane Mode.
* 
* @param context
* @return true if enabled.
*/
private static boolean isAirplaneModeOn(Context context) {

   return Settings.System.getInt(context.getContentResolver(),
           Settings.Global.AIRPLANE_MODE_ON, 0) != 0;

}
于 2010-11-30T22:16:55.760 回答
98

通过扩展 Alex 的答案以包括 SDK 版本检查,我们有:

/**
 * Gets the state of Airplane Mode.
 * 
 * @param context
 * @return true if enabled.
 */
@SuppressWarnings("deprecation")
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static boolean isAirplaneModeOn(Context context) {        
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
        return Settings.System.getInt(context.getContentResolver(), 
                Settings.System.AIRPLANE_MODE_ON, 0) != 0;          
    } else {
        return Settings.Global.getInt(context.getContentResolver(), 
                Settings.Global.AIRPLANE_MODE_ON, 0) != 0;
    }       
}
于 2013-06-11T17:02:51.313 回答
55

如果您不想轮询飞行模式是否处于活动状态,您可以为 SERVICE_STATE Intent 注册一个 BroadcastReceiver 并对其做出反应。

在您的 ApplicationManifest(Android 8.0 之前)中:

<receiver android:enabled="true" android:name=".ConnectivityReceiver">
    <intent-filter>
        <action android:name="android.intent.action.AIRPLANE_MODE"/>
    </intent-filter>
</receiver>

或以编程方式(所有 Android 版本):

IntentFilter intentFilter = new IntentFilter("android.intent.action.AIRPLANE_MODE");

BroadcastReceiver receiver = new BroadcastReceiver() {
      @Override
      public void onReceive(Context context, Intent intent) {
            Log.d("AirplaneMode", "Service state changed");
      }
};

context.registerReceiver(receiver, intentFilter);

如其他解决方案所述,您可以在通知接收器时轮询飞行模式并抛出异常。

于 2010-11-30T22:24:51.673 回答
20

在注册飞行模式时BroadcastReceiver(@saxos 回答),我认为立即从 获取飞行模式设置的状态是很有意义的Intent Extras,以避免调用Settings.Globalor Settings.System

@Override
public void onReceive(Context context, Intent intent) {

    boolean isAirplaneModeOn = intent.getBooleanExtra("state", false);
    if(isAirplaneModeOn){

       // handle Airplane Mode on
    } else {
       // handle Airplane Mode off
    }
}
于 2015-04-11T12:15:34.770 回答
7

这里

 public static boolean isAirplaneModeOn(Context context){
   return Settings.System.getInt(
               context.getContentResolver(),
               Settings.System.AIRPLANE_MODE_ON, 
               0) != 0;
 }
于 2010-11-30T22:18:51.250 回答
5

为了摆脱折旧投诉(针对 API17+ 并且不太关心向后兼容性时),必须与以下内容进行比较Settings.Global.AIRPLANE_MODE_ON

/** 
 * @param Context context
 * @return boolean
**/
private static boolean isAirplaneModeOn(Context context) {
   return Settings.System.getInt(context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON, 0) != 0);
}

考虑较低的 API 时:

/** 
 * @param Context context
 * @return boolean
**/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
@SuppressWarnings({ "deprecation" })
private static boolean isAirplaneModeOn(Context context) {
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1){
        /* API 17 and above */
        return Settings.Global.getInt(context.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0) != 0;
    } else {
        /* below */
        return Settings.System.getInt(context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON, 0) != 0;
    }
}
于 2015-09-26T13:32:08.177 回答
3

在奥利奥请不要使用飞行模式broadCastReceiver。这是一个隐含的意图。它已被删除。这是当前的例外列表。它目前不在列表中,因此应该无法接收数据。认为它死了。

正如上面另一个用户所说,使用以下代码:

 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
    @SuppressWarnings({ "deprecation" })
    public static boolean isAirplaneModeOn(Context context) {
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1){
        /* API 17 and above */
            return Settings.Global.getInt(context.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0) != 0;
        } else {
        /* below */
            return Settings.System.getInt(context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON, 0) != 0;
        }
    }
于 2017-11-29T11:34:24.460 回答
1

静态广播接收器

清单代码:

<receiver android:name=".airplanemodecheck" android:enabled="true"
 android:exported="true">
  <intent-filter>
     <action android:name="android.intent.action.AIRPLANE_MODE"></action>
  </intent-filter>
</receiver>

Java 代码:广播接收器 java 文件

if(Settings.System.getInt(context.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0)== 0)
{
  Toast.makeText(context, "AIRPLANE MODE Off", Toast.LENGTH_SHORT).show();
}
else
{
 Toast.makeText(context, "AIRPLANE MODE On", Toast.LENGTH_SHORT).show();
}

或者

动态广播接收器

Java 代码:活动 java 文件

在应用程序打开时注册广播接收器无需在清单中添加代码,如果您仅在您的活动打开时采取操作,例如在您访问互联网时检查飞行模式是否打开等

airplanemodecheck reciver;

@Override
protected void onResume() {
   super.onResume();
   IntentFilter intentFilter = new IntentFilter();
   intentFilter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
   reciver = new airplanemodecheck();
   registerReceiver(reciver, intentFilter);
}

@Override
protected void onStop() {
  super.onStop();
  unregisterReceiver(reciver);
}

Java 代码:广播接收器 java 文件

if(Settings.System.getInt(context.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0)== 0)
{
  Toast.makeText(context, "AIRPLANE MODE Off", Toast.LENGTH_SHORT).show();
}
else
{
 Toast.makeText(context, "AIRPLANE MODE On", Toast.LENGTH_SHORT).show();
}
于 2017-05-06T21:13:16.187 回答
1

从 API 级别 - 17

/**
     * Gets the state of Airplane Mode.
     *
     * @param context
     * @return true if enabled.
     */
    private static boolean isAirplaneModeOn(Context context) {

        return Settings.Global.getInt(context.getContentResolver(),
                Settings.Global.AIRPLANE_MODE_ON, 0) != 0;

    }
于 2017-05-23T13:19:03.050 回答
0

我写了这门课,可能会有所帮助。它不会直接返回布尔值来告诉您飞行模式是启用还是禁用,但它会在飞行模式从一种更改为另一种时通知您。

public abstract class AirplaneModeReceiver extends BroadcastReceiver {

    private Context context;

    /**
     * Initialize tihe reciever with a Context object.
     * @param context
     */
    public AirplaneModeReceiver(Context context) {
        this.context = context;
    }

    /**
     * Receiver for airplane mode status updates.
     *
     * @param context
     * @param intent
     */
    @Override
    public void onReceive(Context context, Intent intent) {
        if(Settings.System.getInt(
                context.getContentResolver(),
                Settings.Global.AIRPLANE_MODE_ON, 0
        ) == 0) {
            airplaneModeChanged(false);
        } else {
            airplaneModeChanged(true);
        }
    }

    /**
     * Used to register the airplane mode reciever.
     */
    public void register() {
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
        context.registerReceiver(this, intentFilter);
    }

    /**
     * Used to unregister the airplane mode reciever.
     */
    public void unregister() {
        context.unregisterReceiver(this);
    }

    /**
     * Called when airplane mode is changed.
     *
     * @param enabled
     */
    public abstract void airplaneModeChanged(boolean enabled);

}

用法

// Create an AirplaneModeReceiver
AirplaneModeReceiver airplaneModeReceiver;

@Override
protected void onResume()
{
    super.onResume();

    // Initialize the AirplaneModeReceiver in your onResume function
    // passing it a context and overriding the callback function
    airplaneModeReceiver = new AirplaneModeReceiver(this) {
        @Override
        public void airplaneModeChanged(boolean enabled) {
            Log.i(
                "AirplaneModeReceiver",
                "Airplane mode changed to: " + 
                ((active) ? "ACTIVE" : "NOT ACTIVE")
            );
        }
    };

    // Register the AirplaneModeReceiver
    airplaneModeReceiver.register();
}

@Override
protected void onStop()
{
    super.onStop();

    // Unregister the AirplaneModeReceiver
    if (airplaneModeReceiver != null)
        airplaneModeReceiver.unregister();
}
于 2017-06-20T17:33:32.267 回答
0

这是唯一对我有用的东西(API 27):

IntentFilter filter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
filter.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
this.registerReceiver(br, filter);

br你的广播接收器在哪里。我相信,随着最近许可的变化,现在两者ConnectivityManager.CONNECTIVITY_ACTION都是Intent.ACTION_AIRPLANE_MODE_CHANGED必要的。

于 2018-04-05T15:49:37.980 回答
0

自 Jelly Bean(构建代码 17)以来,此字段已移至全局设置。因此,为了获得最佳的兼容性和稳健性,我们必须同时处理这两种情况。以下示例是用 Kotlin 编写的。

fun isInAirplane(context: Context): Boolean {
    return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
        Settings.Global.getInt(
            context.contentResolver, Settings.Global.AIRPLANE_MODE_ON, 0
        )
    } else {
        Settings.System.getInt(
            context.contentResolver, Settings.System.AIRPLANE_MODE_ON, 0
        )
    } != 0
}

注意:如果不支持 Jelly Bean 之前的版本,可以省略 if 子句。
您在引用 时获得的值与Settings.System.AIRPLANE_MODE_ON您在 Global.* 下找到的值相同

    /**
     * @deprecated Use {@link android.provider.Settings.Global#AIRPLANE_MODE_ON} instead
     */
    @Deprecated
    public static final String AIRPLANE_MODE_ON = Global.AIRPLANE_MODE_ON;

这是前面代码的上面的果冻豆版本。

fun isInAirplane(context: Context): Boolean {
    return Settings.Global.getInt(
        context.contentResolver, Settings.Global.AIRPLANE_MODE_ON, 0
    ) != 0
}
于 2019-12-19T18:47:25.040 回答
-4

您可以检查互联网是否已打开

public class ConnectionDetector {

private Context _context;

public ConnectionDetector(Context context){
    this._context = context;
}

public boolean isConnectingToInternet(){
    ConnectivityManager connectivity = (ConnectivityManager) _context.getSystemService(Context.CONNECTIVITY_SERVICE);
      if (connectivity != null)
      {
          NetworkInfo[] info = connectivity.getAllNetworkInfo();
          if (info != null)
              for (int i = 0; i < info.length; i++)
                  if (info[i].getState() == NetworkInfo.State.CONNECTED)
                  {
                      return true;
                  }

      }
      return false;
}

}

于 2012-11-03T10:51:22.633 回答