gps打开/关闭时如何触发广播接收器？

Question

public class BootReceiver extends BroadcastReceiver  {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().matches("android.location.PROVIDERS_CHANGED")) {
            Toast.makeText(context, "in android.location.PROVIDERS_CHANGED",
                Toast.LENGTH_SHORT).show();
            Intent pushIntent = new Intent(context, LocalService.class);
            context.startService(pushIntent);
        } else {
            Toast.makeText(context, "not in android.location.PROVIDERS_CHANGED",
                Toast.LENGTH_SHORT).show();
            Intent pushIntent = new Intent(context, LocalService.class);
            context.startService(pushIntent);
        }
    }

    @Override
    public void onLocationChanged(Location arg0) {

    }
}

在我的应用程序中，我需要在 gps 打开/关闭时触发广播接收器。 调查此事并建议在应用中实施的最佳方案。

Answer 1

当用户想要触发任何打开/关闭位置提供的操作时，这很有用

您应该在清单中添加此操作

<action android:name="android.location.PROVIDERS_CHANGED" />

添加此操作后，您可以触发广播接收器

<receiver android:name=".GpsLocationReceiver">
    <intent-filter>
        <action android:name="android.location.PROVIDERS_CHANGED" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</receiver>

在你的BroadcastReceiver 类中，你必须在下面给出的那个类中实现LocationListener..

public class GpsLocationReceiver extends BroadcastReceiver {        
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().matches("android.location.PROVIDERS_CHANGED")) {
            Toast.makeText(context, "in android.location.PROVIDERS_CHANGED",
            Toast.LENGTH_SHORT).show();
            Intent pushIntent = new Intent(context, LocalService.class);
            context.startService(pushIntent);
        }
    }
}

Answer 2

我想添加 @Deepak Gupta answer。 我想在 GPS 状态更改时添加代码，说明如何在您的 fragment 或 activity 中注册动态 brodacsast 接收器。

在您的活动或片段中注册您的广播接收器，如下所示。

private BroadcastReceiver gpsReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().matches(LocationManager.PROVIDERS_CHANGED_ACTION)) {
            //Do your stuff on GPS status change
        }
    }
};

对于片段：

getContext().registerReceiver(gpsReceiver, new IntentFilter(LocationManager.PROVIDERS_CHANGED_ACTION));

对于活动：

registerReceiver(gpsReceiver, new IntentFilter(LocationManager.PROVIDERS_CHANGED_ACTION));

这可以用于您可以访问上下文的任何地方，而不仅仅是在活动或片段内部。我希望它有所帮助。

Answer 3

你可以试试这个代码，正如用户@DanielNugent 指出的那样：

    ContentResolver contentResolver = getContext().getContentResolver();
    // Find out what the settings say about which providers are enabled
    int mode = Settings.Secure.getInt(
            contentResolver, Settings.Secure.LOCATION_MODE, Settings.Secure.LOCATION_MODE_OFF);

    if (mode != Settings.Secure.LOCATION_MODE_OFF) {
      if (mode == Settings.Secure.LOCATION_MODE_HIGH_ACCURACY) {
        locationMode = "High accuracy. Uses GPS, Wi-Fi, and mobile networks to determine location";
      } else if (mode == Settings.Secure.LOCATION_MODE_SENSORS_ONLY) {
          locationMode = "Device only. Uses GPS to determine location";
      } else if (mode == Settings.Secure.LOCATION_MODE_BATTERY_SAVING) {
          locationMode = "Battery saving. Uses Wi-Fi and mobile networks to determine location";
      }
    }

Answer 4

Android定位模式引入Android后的工作解决方案

我们可以用定位模式检查更准确

private boolean isGpsEnabled(Context context) {
            ContentResolver contentResolver = getContext().getContentResolver();
            // Find out what the settings say about which providers are enabled
            //  String locationMode = "Settings.Secure.LOCATION_MODE_OFF";
            int mode = Settings.Secure.getInt(
                    contentResolver, Settings.Secure.LOCATION_MODE, Settings.Secure.LOCATION_MODE_OFF);
            if (mode != Settings.Secure.LOCATION_MODE_OFF) {
                return true;
               /* if (mode == Settings.Secure.LOCATION_MODE_HIGH_ACCURACY) {
                    locationMode = "High accuracy. Uses GPS, Wi-Fi, and mobile networks to determine location";
                } else if (mode == Settings.Secure.LOCATION_MODE_SENSORS_ONLY) {
                    locationMode = "Device only. Uses GPS to determine location";
                } else if (mode == Settings.Secure.LOCATION_MODE_BATTERY_SAVING) {
                    locationMode = "Battery saving. Uses Wi-Fi and mobile networks to determine location";
                }*/
            } else {
                return false;
            }
        }

Answer 5

你可以试试这个

清单

<receiver android:name=".MyReceiver">
        <intent-filter>
            <action android:name="android.location.GPS_ENABLED_CHANGE" />
            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </receiver>

我的接收者

if (intent.getAction().matches("android.location.GPS_ENABLED_CHANGE"))
    {
        boolean enabled = intent.getBooleanExtra("enabled",false);

        Toast.makeText(context, "GPS : " + enabled,
                Toast.LENGTH_SHORT).show();
    }