問(wèn)題描述

我在其他帖子中發(fā)現(xiàn)了這個(gè)答案的零碎，但我想在這里記錄下來(lái)以供其他人使用.

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

我怎樣才能簡(jiǎn)單地請(qǐng)求用戶的 GPS 和/或網(wǎng)絡(luò)位置，并且如果他們尚未啟用該服務(wù)，則提示他們這樣做?

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?

推薦答案

如果您想在按鈕按下時(shí)捕獲位置，請(qǐng)按照以下步驟操作.如果用戶沒(méi)有啟用定位服務(wù)，這會(huì)將他們發(fā)送到設(shè)置菜單以啟用它.

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.

首先，您必須在清單中添加權(quán)限android.permission.ACCESS_COARSE_LOCATION".如果需要GPS(網(wǎng)絡(luò)定位不夠靈敏)，添加權(quán)限android.permission.ACCESS_FINE_LOCATION"，將Criteria.ACCURACY_COARSE"改為Criteria.ACCURACY_FINE"

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);
        }
    }
});

我的外部班級(jí)設(shè)置了這個(gè)監(jiān)聽器

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) {}

};

然后，每當(dāng)您想停止收聽時(shí)，請(qǐng)調(diào)用它.您至少應(yīng)該在活動(dòng)的 onStop 方法期間進(jìn)行此調(diào)用.

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);

這篇關(guān)于如果禁用，Android 獲取位置或提示啟用位置服務(wù)的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！