Android系统服务：LocationManager

最新推荐文章于 2024-09-18 09:56:53 发布

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最新推荐文章于 2024-09-18 09:56:53 发布

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分类专栏： Android系统级服务&XManager

本文链接：https://blog.youkuaiyun.com/ss1168805219/article/details/72845731

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本文详细介绍了Android系统的定位机制，包括如何获取位置权限、使用LocationManager进行定位更新设置及监听，同时还探讨了不同定位类型的适用场景及其限制。

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系统定位

需要权限：

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

获取LocationManager

LocationManager lm = (LocationManager) getSystemService(LOCATION_SERVICE);

设置参数和监听

lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 100, listener);

 * 第一个参数：定位类型
 * 第二个参数：定位时间间隔
 * 第三个参数：定位距离间隔
 * 第四个参数：监听

当第3个参数不为0时，以第3个参数为依据；当第三个参数为0，已第2个参数为依据。

定位类型:(6.0上测试失败，没有获取到坐标，即使把targetSdkVersion改成22,；5..1上测试成功。)

LocationManager.GPS_PROVIDER
LocationManager.NETWORK_PROVIDER
LocationManager.PASSIVE_PROVIDER

LocationListener listener = new LocationListener() {
    @Override
    public void onLocationChanged(Location location) {
        //获取到坐标
        LogUtil.d("onLocationChanged" + location.getProvider() + "," + location.getLongitude() + "," + location.getLatitude() + ","
                + location.getTime() + "," + location.getAltitude());
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        //GPS状态变化时触发
        LogUtil.d("onStatusChanged," + provider + "," + status);
    }

    @Override
    public void onProviderEnabled(String provider) {
        //GPS开启时触发
        LogUtil.d("onProviderEnabled," + provider);
    }

    @Override
    public void onProviderDisabled(String provider) {
        //GPS关闭时触发
        LogUtil.d("onProviderDisabled," + provider);
    }
};

`AndroidUtilCode`的`LocationUtils`

是否打开了GPS:

LocationUtils.isGpsEnabled()

LocationUtils.register(0, 0, new LocationUtils.OnLocationChangeListener() {
    @Override
    public void getLastKnownLocation(Location location) {
        LogUtil.d("getLastKnownLocation," + location.getLatitude() + "," + location.getLongitude());
    }

    @Override
    public void onLocationChanged(Location location) {
        LogUtil.d("onLocationChanged," + location.getLatitude() + "," + location.getLongitude());
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        LogUtil.d("provider=" + provider + ",status=" + status);
    }
});


LocationUtils.unregister();