码迷,mamicode.com
首页 > 其他好文 > 详细

LocationUtil

时间:2020-06-16 14:43:38      阅读:68      评论:0      收藏:0      [点我收藏+]

标签:变化   sel   ||   roi   desc   elf   isa   access   应该   

package com.android.demo.lileidemo.utils;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.util.Log;

import com.android.demo.lileidemo.MyApplication;
import com.android.demo.lileidemo.constant.AppConstants;

import java.util.List;

/**
* @Description: LocationUtil.
* @Author: lilei.
* @CreateDate: 2/19/2020$ 10:03 AM$.
* @Version: 1.0.
*/
public class LocationUtil {
private static final String TAG = AppConstants.APP_TAG + "LocationUtil ";
private static LocationUtil mInstance;
private LocationManager mLocationManager;
private String mLocationProvider;
private Context mContext;

public LocationUtil() {
mContext = MyApplication.getAppContext();
}

public static LocationUtil getInstance() {
if (mInstance == null) {
mInstance = new LocationUtil();
}
return mInstance;
}

public boolean checkLocationPermission() {
if (ContextCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
|| ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return false;
} else {
return true;
}

}

public boolean hasGPSDevice(Context context) {
final LocationManager mgr = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
if (mgr == null) {
return false;
}
final List<String> providers = mgr.getAllProviders();
if (providers == null) {
return false;
}
return providers.contains(LocationManager.GPS_PROVIDER);
}

/**
* Get Location.
* Should call requestLocationUpdates first.
*
* @return location.
*/
public Location getLocation() {
if (!checkLocationPermission()) {
Log.d(TAG, "getLocation please set location permission first!!");
return null;
}
if (null == mLocationManager) {
requestLocationUpdates();
return null;
}
//Get location.
Location location = mLocationManager.getLastKnownLocation(mLocationProvider);
if (location != null) {
Log.d(TAG, "getLocation() getLongitude:" + location.getLongitude()
+ " getLatitude:" + location.getLatitude());
} else {
Log.d(TAG, "getLocation location is null call requestLocationUpdates!!");
requestLocationUpdates();
}
return location;

}

/**
* Request location updates.
* after call this function can call getLocation.
* after call getLocation should call removeLocationUpdates to release monitoring.
*/
public void requestLocationUpdates() {
Log.d(TAG, "requestLocationUpdates begin");
//Get permission (if you do not have permission to open,
//a dialog box will pop up asking whether to open permission).
if (!checkLocationPermission()) {
Log.d(TAG, "requestLocationUpdates please set location permission first!!");
return;
}

//Get geolocation Manager.
if (null == mLocationManager) {
mLocationManager = (LocationManager) mContext.getSystemService(
Context.LOCATION_SERVICE);
}
//Get all available location providers.
List<String> providers = mLocationManager.getProviders(true);
if (providers.contains(LocationManager.GPS_PROVIDER)) {
//If it‘s GPS.
mLocationProvider = LocationManager.GPS_PROVIDER;
} else if (providers.contains(LocationManager.NETWORK_PROVIDER)) {
//If it‘s network.
mLocationProvider = LocationManager.NETWORK_PROVIDER;
} else {
Log.e(TAG, "No location provider available!");
return;
}

//Monitoring geographic location changes.
mLocationManager.requestLocationUpdates(mLocationProvider, 1000, 1, mLocationListener);
}

public void removeLocationUpdates() {
Log.d(TAG, "removeLocationUpdates()");
if (null != mLocationManager) {
mLocationManager.removeUpdates(mLocationListener);
}
}

LocationListener mLocationListener = new LocationListener() {

@Override
public void onStatusChanged(String provider, int status, Bundle arg2) {

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onProviderDisabled(String provider) {

}

@Override
public void onLocationChanged(Location location) {
//如果位置发生变化,重新显示 如果位置改变,经纬度没有变,不会执行此函数 应该说经纬度发生变化执行此函数
Log.d(TAG, "mLocationListener.onLocationChanged 经度" + location.getLongitude()
+ "纬度" + location.getLatitude());
}
};

}

LocationUtil

标签:变化   sel   ||   roi   desc   elf   isa   access   应该   

原文地址:https://www.cnblogs.com/adamli/p/13140805.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!