Android获取位置或提示以启用位置服务（如果禁用） [英] Android get location or prompt to enable location service if disabled

问题描述

我发现这个答案的零散部分是通过其他帖子散播的，但我想在此为其他人进行录音。

如何简单地请求用户GPS和/或网络的位置，如果他们还没有启用服务，提示他们这样做？ 想要在按钮按钮上捕捉位置，请按照以下步骤操作。如果用户没有启用位置服务，则会将它们发送到设置菜单以启用它。

首先，您必须添加权限android.permission。 ACCESS_COARSE_LOCATION到您的清单。如果您需要GPS（网络位置不够敏感），请改为添加权限android.permission.ACCESS_FINE_LOCATION，并将Criteria.ACCURACY_COARSE更改为Criteria.ACCURACY_FINE。

  Button gpsButton =（Button）this.findViewById（R.id.buttonGPSLocation）; 
 gpsButton.setOnClickListener（new OnClickListener（）{
 
 @Override 
 public void onClick（View v）{
 //开始loction服务
 LocationManager locationManager =（LocationManager）[OUTERCLASS] .this.getSystemService（Context.LOCATION_SERVICE）; 
 
条件locationCritera = new Criteria（）; 
 locationCritera.setAccuracy（Criteria.ACCURACY_COARSE）; 
 locationCritera.setAltitudeRequired（false）; 
 locationCritera.setBearingRequired（false）; 
 locationCritera.setCostAllowed（true）; 
 locationCritera.setPowerRequirement（Criteria.NO_REQUIREMENT）; 
 
 String providerName = locationManager.getBestProvider（locationCritera，true）; 
 $ b $ if（providerName！= null&& locationManager.isProviderEnabled（providerName））{
 // Provider is enabled 
 locationManager.requestLocationUpdates（providerName，20000,100，[OUTERCLASS] .this.lo cationListener）; 
} else {
 // Provider未启用，提示用户启用它
 Toast.makeText（[OUTERCLASS] .this，R.string.please_turn_on_gps，Toast.LENGTH_LONG）.show（） ; 
 Intent myIntent = new Intent（Settings.ACTION_LOCATION_SOURCE_SETTINGS）; 
 [OUTERCLASS] .this.startActivity（myIntent）; 
} 
} 
}）; 
  

我的外部类设置了此侦听器

< pre $ private final LocaleListener locationListener = new LocationListener（）{

@Override
public void onLocationChanged（Location location）{
[OUTERCLASS] .this.gpsLocationReceived（位置）;
}

@Override
public void onProviderDisabled（String provider）{}
$ b @Override
public void onProviderEnabled（String provider）{ }

@Override
public void onStatusChanged（String provider，int status，Bundle extras）{}

};


然后，每当你想停止监听时调用它。

  LocationManager locationManager =（LocationManager）this.getSystemService（Context.LOCATION_SERVICE ）; 
 locationManager.removeUpdates（this.locationListener）; 
  

I've found bits and pieces of this answer scattered through other posts, but I wanted to record it here for others.

How can I simply request the user's GPS and/or Network location and, if they haven't enabled the service, prompt them to do so?

解决方案

If you want to capture the location on a button push, here's how you'd do it. If the user does not have a location service enabled, this will send them to the settings menu to enable it.

First, you must add the permission "android.permission.ACCESS_COARSE_LOCATION" to your manifest. If you need GPS (network location isn't sensitive enough), add the permission "android.permission.ACCESS_FINE_LOCATION" instead, and change the "Criteria.ACCURACY_COARSE" to "Criteria.ACCURACY_FINE"

Button gpsButton = (Button)this.findViewById(R.id.buttonGPSLocation);
gpsButton.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        // Start loction service
        LocationManager locationManager = (LocationManager)[OUTERCLASS].this.getSystemService(Context.LOCATION_SERVICE);

        Criteria locationCritera = new Criteria();
        locationCritera.setAccuracy(Criteria.ACCURACY_COARSE);
        locationCritera.setAltitudeRequired(false);
        locationCritera.setBearingRequired(false);
        locationCritera.setCostAllowed(true);
        locationCritera.setPowerRequirement(Criteria.NO_REQUIREMENT);

        String providerName = locationManager.getBestProvider(locationCritera, true);

        if (providerName != null && locationManager.isProviderEnabled(providerName)) {
            // Provider is enabled
            locationManager.requestLocationUpdates(providerName, 20000, 100, [OUTERCLASS].this.locationListener);
        } else {
            // Provider not enabled, prompt user to enable it
            Toast.makeText([OUTERCLASS].this, R.string.please_turn_on_gps, Toast.LENGTH_LONG).show();
            Intent myIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            [OUTERCLASS].this.startActivity(myIntent);
        }
    }
});

My outer class has this listener set up

private final LocationListener locationListener = new LocationListener() {

    @Override
    public void onLocationChanged(Location location) {
        [OUTERCLASS].this.gpsLocationReceived(location);
    }

    @Override
    public void onProviderDisabled(String provider) {}

    @Override
    public void onProviderEnabled(String provider) {}

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {}

};

Then, whenever you want to stop listening call this. You should at least make this call during your activity's onStop method.

LocationManager locationManager = (LocationManager)this.getSystemService(Context.LOCATION_SERVICE);
locationManager.removeUpdates(this.locationListener);

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