如何检查是否已启用定位服务？ [英] How to check if Location Services are enabled?

问题描述

我正在开发Android操作系统上的应用程序。我不知道如何检查，如果位置服务都启用。

I'm developing an app on Android OS. I don't know how to check if Location Services are enabled or not.

我需要返回true，如果他们被启用，假，如果没有一个方法（因此在过去的情况下，我可以显示一个对话框，让他们）。

I need a method that returns "true" if they are enabled and "false" if not (so in the last case I can show a dialog to enable them).

推荐答案

您可以使用下面的code，检查GPS提供商和网络提供商是否启用与否。

You can use the below code to check whether gps provider and network providers are enabled or not.

LocationManager lm = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
boolean gps_enabled = false;
boolean network_enabled = false;

try {
    gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch(Exception ex) {}

try {
    network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch(Exception ex) {}

if(!gps_enabled && !network_enabled) {
    // notify user
    AlertDialog.Builder dialog = new AlertDialog.Builder(context);
    dialog.setMessage(context.getResources().getString(R.string.gps_network_not_enabled));
    dialog.setPositiveButton(context.getResources().getString(R.string.open_location_settings), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface paramDialogInterface, int paramInt) {
                // TODO Auto-generated method stub
                Intent myIntent = new Intent( Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                context.startActivity(myIntent);
                //get gps
            }
        });
    dialog.setNegativeButton(context.getString(R.string.Cancel), new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface paramDialogInterface, int paramInt) {
                // TODO Auto-generated method stub

            }
        });
    dialog.show();      
}

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