调用Android gps数据初始化，获取Android gps系统服务

最新推荐文章于 2024-07-15 03:46:37 发布

原创最新推荐文章于 2024-07-15 03:46:37 发布 · 402 阅读

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#android #java #开发语言

该代码段展示了如何在Android中初始化并使用GPS定位服务。通过LocationManager获取最佳定位提供者，设置精度要求，然后监听位置变化和GPS状态。当GPS位置改变时，更新位置信息，并显示经纬度、高度、速度等详细数据。同时，监听GPS卫星状态以确定定位成功率。

    private static final String GPS_LOCATION_NAME = android.location.LocationManager.GPS_PROVIDER;
    private LocationManager mLocationManager;
    private boolean isGpsEnabled;
    private String locateType;
    //默认定位时间间隔为10s
    private long mMinTime = 10 * 1000L;
    //默认位置可更新的最短距离为0m
    private float mMinDistance = 0;

    private int mGpsCount = 0;
    public void initGPSlocation() {
        //获取定位服务
        mLocationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
        String providerName = mLocationManager.getBestProvider(getCriteria(), false);
        //判断是否开启GPS定位功能
        isGpsEnabled = mLocationManager.isProviderEnabled(GPS_LOCATION_NAME);
        Logger.i(TAG,"isGpsEnabled："+isGpsEnabled + "  providerName："+ providerName);
        //定位类型：GPS
        locateType = mLocationManager.GPS_PROVIDER;
    }

	//定义要获取的GPS数据
    public Criteria getCriteria() {
        Criteria c = new Criteria();
        c.setAccuracy(Criteria.ACCURACY_FINE);//高精度
        c.setAltitudeRequired(true);//包含高度信息
        c.setBearingRequired(true);//包含方位信息
        c.setSpeedRequired(true);//包含速度信息
        c.setCostAllowed(true);//允许付费
        c.setPowerRequirement(Criteria.POWER_HIGH);//高耗电
        return c;
    }

启动定位

 @Override
public void startGPSlocation() {
    Location location = mLocationManager.getLastKnownLocation(locateType);
    updatelocation(location);
    mLocationManager.requestLocationUpdates(locateType, mMinTime, mMinDistance, mGPSLocationListener);

    mLocationManager.addGpsStatusListener(mGpsStatusCallback);
}

GPS数据回调

private LocationListener mGPSLocationListener = new LocationListener() {
    @Override
    public void onLocationChanged(Location location) {
        Logger.i(TAG,"GPSLocationListener onLocationChanged");
        //当GPS位置发生改变时，更新位置
        updatelocation(location);
        view.onLocationChanged(location,mGpsCount);
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        Logger.i(TAG,"GPSLocationListener onStatusChanged" +status);
        switch (status) {
            case LocationProvider.AVAILABLE:
                break;
            case LocationProvider.OUT_OF_SERVICE:
                break;
            case LocationProvider.TEMPORARILY_UNAVAILABLE:
                break;
            default:
                break;
        }
    }

    @Override
    public void onProviderEnabled(String provider) {
        Logger.i(TAG,"GPSLocationListener onProviderEnabled");
    }

    @Override
    public void onProviderDisabled(String provider) {
        Logger.i(TAG,"GPSLocationListener onProviderDisabled");
    }
};

private void updatelocation(Location location) {
        if (location != null) {
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.append("实时位置信息\n");
            stringBuilder.append("经度：");
            stringBuilder.append(location.getLongitude());
            stringBuilder.append("\n纬度：");
            stringBuilder.append(location.getLatitude());
            stringBuilder.append("\n高度：");
            stringBuilder.append(location.getAltitude());
            stringBuilder.append("\n速度：");
            stringBuilder.append(location.getSpeed());
            stringBuilder.append("\n时间：");
            stringBuilder.append(location.getTime());
            stringBuilder.append("\n精度：");
            stringBuilder.append(location.getAccuracy());
            stringBuilder.append("\n方位：");
            stringBuilder.append(location.getBearing());
            T.showShort(mContext, "currentLocation：" + stringBuilder.toString());
        }
    }

获取gps卫星数量

GpsStatus.Listener mGpsStatusCallback = new GpsStatus.Listener() {
    @Override
    public void onGpsStatusChanged(int event) {
        if (event == GpsStatus.GPS_EVENT_SATELLITE_STATUS) {
            //卫星状态改变
            fetchCurGpsStatus();
        }
    }
};

private void fetchCurGpsStatus() {
    GpsStatus mStatus = mLocationManager.getGpsStatus(null);
    //获取卫星颗数的默认最大值
    int maxSatellites = mStatus.getMaxSatellites();
    //创建一个迭代器保存所有卫星
    Iterator<GpsSatellite> iters = mStatus.getSatellites().iterator();
    //卫星数
    if (iters != null) {
        while (iters.hasNext() && mGpsCount <= maxSatellites) {
            GpsSatellite s = iters.next();
            if (s.usedInFix()) {
                mGpsCount++;
            }
        }
    }
    if (mGpsCount < 3) {
        //定位失败
    } else {
        //定位成功
    }
    Logger.i(TAG,"fetchCurGpsStatus success " + mGpsCount);
}