Manifest文件添加权限：
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
主要代码：
GPSUtils.java
package com.cxyzy.demo;import android.annotation.SuppressLint;import android.content.Context;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.util.Log;public class GPSUtils { private static String TAG = GPSUtils.class.getSimpleName(); private static GPSUtils mInstance; private Context mContext; private static LocationListener mLocationListener = new LocationListener() { // Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d(TAG, "onStatusChanged");
} // Provider被enable时触发此函数，比如GPS被打开
@Override
public void onProviderEnabled(String provider) {
Log.d(TAG, "onProviderEnabled");
} // Provider被disable时触发此函数，比如GPS被关闭
@Override
public void onProviderDisabled(String provider) {
Log.d(TAG, "onProviderDisabled");
} //当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发
@Override
public void onLocationChanged(Location location) {
}
}; private GPSUtils(Context context) { this.mContext = context;
} public static GPSUtils getInstance(Context context) { if (mInstance == null) {
mInstance = new GPSUtils(context.getApplicationContext());
} return mInstance;
} /**
* 获取地理位置，先根据GPS获取，再根据网络获取
*
* @return
*/
@SuppressLint("MissingPermission") public Location getLocation() {
Location location = null; try { if (mContext == null) { return null;
}
LocationManager locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE); if (locationManager == null) { return null;
} if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { //从gps获取经纬度
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); if (location == null) {//当GPS信号弱没获取到位置的时候再从网络获取
location = getLocationByNetwork();
}
} else { //从网络获取经纬度
location = getLocationByNetwork();
}
} catch (Exception e) {
Log.e(TAG, e.getMessage());
} return location;
} /**
* 判断是否开启了GPS或网络定位开关
*
* @return
*/
public boolean isLocationProviderEnabled() { boolean result = false;
LocationManager locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE); if (locationManager == null) { return result;
} if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) || locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
result = true;
} return result;
} /**
* 获取地理位置，先根据GPS获取，再根据网络获取
*
* @return
*/
@SuppressLint("MissingPermission") private Location getLocationByNetwork() {
Location location = null;
LocationManager locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE); try { if (locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, mLocationListener);
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
} catch (Exception e) {
Log.e(TAG, e.getMessage());
} return location;
}
}调用样例（Kotlin）：
package com.cxyzy.demoimport android.app.AlertDialogimport android.content.Intentimport android.os.Bundleimport android.provider.Settingsimport android.widget.Toastimport androidx.appcompat.app.AppCompatActivityimport com.blankj.utilcode.constant.PermissionConstantsimport com.blankj.utilcode.util.PermissionUtilsimport kotlinx.android.synthetic.main.activity_main.*class MainActivity : AppCompatActivity() { private val REQUEST_LOCATION_PERMISSION_CODE = 100
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
getLocationBtn.setOnClickListener { showLocation() }
} private fun showLocation() {
PermissionUtils.permission(PermissionConstants.LOCATION)
.callback(object : PermissionUtils.FullCallback {
override fun onGranted(permissionsGranted: List<String>) { if (GPSUtils.getInstance(this@MainActivity).isLocationProviderEnabled) {
showLocationWithToast()
} else {
requestLocation()
}
}
override fun onDenied(permissionsDeniedForever: List<String>, permissionsDenied: List<String>) {
Toast.makeText(this@MainActivity, "未获得地理位置权限", Toast.LENGTH_LONG).show()
}
})
.request()
} private fun showLocationWithToast() {
val location = GPSUtils.getInstance(this@MainActivity).location
Toast.makeText( this@MainActivity, "地理位置：lon:${location.longitude};lat:${location.latitude}",
Toast.LENGTH_LONG
).show()
} /**
* 检查地理位置开关是否打开，如果未打开，则提示用户打开地理位置开关。
* 如果已打开，则显示地理位置；如果被拒绝，直接关闭窗口。
*/
private fun requestLocation() {
val message = "本应用需要获取地理位置，请打开获取位置的开关"
val alertDialog = AlertDialog.Builder(this).setMessage(message).setCancelable(false)
.setPositiveButton(android.R.string.ok)
{ dialog, _ ->
dialog.dismiss()
gotoSysLocationSettingsPage()
}
.setNegativeButton(android.R.string.cancel) { dialog, _ -> dialog.dismiss() }
.create()
alertDialog.show()
} private fun gotoSysLocationSettingsPage() {
val intent = Intent()
intent.action = Settings.ACTION_LOCATION_SOURCE_SETTINGS
startActivityForResult(intent, REQUEST_LOCATION_PERMISSION_CODE)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
when (requestCode) {
REQUEST_LOCATION_PERMISSION_CODE -> showLocation() else -> {
}
}
}
}备注：调用样例使用了第三方库，需要提前添加依赖：implementation 'com.blankj:utilcode:1.22.10'
效果图：
作者：程序园中猿
链接：https://www.jianshu.com/p/a4f0f0508ede
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