android - 当用户禁用位置访问时显示弹出窗口(Android Google map )

Question

我如何显示弹出窗口以启用您的位置访问并打开位置访问 Intent 。现在我正在创建包含 map 的应用程序。我已启用(map.setMyLocationEnabled(true))。并且应用程序显示当前位置按钮，但当禁用位置访问时，它不会显示任何响应。我希望如果位置访问被禁用，则会显示一个弹出窗口，提示用户启用位置访问

提前致谢

Answer 1

此代码虽然为您提供了您想要的一切，但是否有任何类型的位置服务可用？、提供商，以及错误消息(如果不是位置管理器提供商)

public class LocationManager_check {

    LocationManager locationManager;
    Boolean locationServiceBoolean = false;
    int providerType = 0;
    static AlertDialog alert;

    public LocationManager_check(Context context) {
        locationManager = (LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE);
        boolean gpsIsEnabled = locationManager
                .isProviderEnabled(LocationManager.GPS_PROVIDER);
        boolean networkIsEnabled = locationManager
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if (networkIsEnabled == true && gpsIsEnabled == true) {
            locationServiceBoolean = true;
            providerType = 1;

        } else if (networkIsEnabled != true && gpsIsEnabled == true) {
            locationServiceBoolean = true;
            providerType = 2;

        } else if (networkIsEnabled == true && gpsIsEnabled != true) {
            locationServiceBoolean = true;
            providerType = 1;
        }

    }

    public Boolean isLocationServiceAvailable() {
        return locationServiceBoolean;
    }

    public int getProviderType() {
        return providerType;
    }

    public void createLocationServiceError(final Activity activityObj) {

        // show alert dialog if Internet is not connected
        AlertDialog.Builder builder = new AlertDialog.Builder(activityObj);

        builder.setMessage(
                "You need to activate location service to use this feature. Please turn on network or GPS mode in location settings")
                .setTitle("LostyFound")
                .setCancelable(false)
                .setPositiveButton("Settings",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                Intent intent = new Intent(
                                        Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                                activityObj.startActivity(intent);
                                dialog.dismiss();
                            }
                        })
                .setNegativeButton("Cancel",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                dialog.dismiss();
                            }
                        });
        alert = builder.create();
        alert.show();
    }

}

如何使用

LocationManager_check locationManagerCheck = new LocationManager_check(
                    this);
            Location location = null;

if(locationManagerCheck .isLocationServiceAvailable){

    if (locationManagerCheck.getProviderType() == 1)
                location = locationManager
                        .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
    else if (locationManagerCheck.getProviderType() == 2)
                location = locationManager
                        .getLastKnownLocation(LocationManager.GPS_PROVIDER);
}else{
    locationManagerCheck .createLocationServiceError(your_activity.this);
}

}