android - 在 Kitkat (4.4) 中检查 gps 是否开启

Question

在 kitkat 下方，我知道 gps 是否在提供者列表中打开

String providers = Secure.getString(context.getContentResolver(), Secure.LOCATION_PROVIDERS_ALLOWED);
if (TextUtils.isEmpty(providers)) {
    return false;
}
return providers.contains(LocationManager.GPS_PROVIDER);

但在 kitkat 中，Secure.LOCATION_PROVIDERS_ALLOWED 已被弃用。

Javaodc 说“使用 Secure.LOCATION_MODE”，位置模式如下...

Secure.LOCATION_MODE_OFF
Secure.LOCATION_MODE_SENSORS_ONLY
Secure.LOCATION_MODE_BATTERY_SAVING
Secure.LOCATION_MODE_HIGH_ACCURACY

但我不知道下面的代码是否正确。 (我没有 kitkat 设备)

int locationMode = Secure.getInt(context.getContentResolver(), Secure.LOCATION_MODE);
boolean isGpsOn = locationMode != Secure.LOCATION_MODE_OFF;

如果不正确，请回答正确的代码。

编辑

我知道 LocationManager。但它需要 ACCESS_FINE_LOCATION 权限。 我不需要“访问”位置。

LocationManager manager = (LocationManager) getSystemService( Context.LOCATION_SERVICE );
boolean isGpsOn = manager.isProviderEnabled( LocationManager.GPS_PROVIDER ) 

Answer 1

自答

@TargetApi(Build.VERSION_CODES.KITKAT)
@SuppressWarnings("deprecation")
public static boolean isGpsEnabled(Context context) {

    if (PackageUtil.checkPermission(context, Manifest.permission.ACCESS_FINE_LOCATION)) {
        LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
        return lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
    }

    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
        String providers = Secure.getString(context.getContentResolver(),
                Secure.LOCATION_PROVIDERS_ALLOWED);
        if (TextUtils.isEmpty(providers)) {
            return false;
        }
        return providers.contains(LocationManager.GPS_PROVIDER);
    } else {
        final int locationMode;
        try {
            locationMode = Secure.getInt(context.getContentResolver(),
                    Secure.LOCATION_MODE);
        } catch (SettingNotFoundException e) {
            e.printStackTrace();
            return false;
        }
        switch (locationMode) {

        case Secure.LOCATION_MODE_HIGH_ACCURACY:
        case Secure.LOCATION_MODE_SENSORS_ONLY:
            return true;
        case Secure.LOCATION_MODE_BATTERY_SAVING:
        case Secure.LOCATION_MODE_OFF:
        default:
            return false;
        }
    }
}

并在您的 packageutils 类中添加此方法:

public static class PackageUtil {

    static boolean checkPermission(Context context, String accessFineLocation) {

        int res = context.checkCallingOrSelfPermission(accessFineLocation);
        return (res == PackageManager.PERMISSION_GRANTED);

    }

}