我的安卓应用需要高精度的位置跟踪。在应用启动时,它以编程方式读取位置设置,如果未选择高精度,则会显示一个屏幕。
我将 Google 的官方示例 (https://developers.google.com/android/reference/com/google/android/gms/location/SettingsClient( 改编为 Kotlin。
这在华为手机上按预期工作,但在三星 S7 和 S8 上失败:如果用户选择了电源平衡,则会出现一个对话框,并将位置跟踪设置为高精度。但是,如果之前仅选择了 GPS,则不会抛出ApiException
,并且设置保持不变。
val locationRequest = LocationRequest.create()
locationRequest.priority = LocationRequest.PRIORITY_HIGH_ACCURACY
val builder = LocationSettingsRequest.Builder().addLocationRequest(locationRequest)
val result = LocationServices.getSettingsClient(this).checkLocationSettings(builder.build())
result.addOnCompleteListener(OnCompleteListener {
try {
it.getResult(ApiException::class.java)
// on Samsung + GPS only setting, execution passes here, no ApiException thrown
} catch(e: ApiException) {
if(e is ResolvableApiException) {
// ...show resolution dialog...
}
}
}
任何提示将不胜感激,谢谢:)
我对 s8 有同样的问题,所以我检查设备,如果是 s8,我会向 PRIORITY_BALANCED_POWER_ACCURACY
发出请求并且它可以工作,但有一些延迟。
我遇到了同样的问题。我找到了一个解决方案。
val locationRequest = LocationRequest.create()
locationRequest.priority = LocationRequest.PRIORITY_HIGH_ACCURACY
val builder = LocationSettingsRequest.Builder().addLocationRequest(locationRequest)
val result = LocationServices.getSettingsClient(this).checkLocationSettings(builder.build())
result.addOnCompleteListener(OnCompleteListener {
try {
it.getResult(ApiException::class.java)
// on Samsung + GPS only setting, execution passes here, no ApiException thrown
val locationManager = application.getSystemService(Context.LOCATION_SERVICE) as LocationManager
if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
AlertDialog.Builder(this@YourActivity)
.setMessage("message for user")
.setPositiveButton(R.string.ok) { _, _ ->
val intent = Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS)
this@YourActivity.startActivityForResult(intent, RC_GPS_LOCATION)
}
.setNegativeButton(R.string.no_thanks, null)
.create()
.show()
} else {
// your code for High accuracy mode
}
} catch (ApiException exception) {
switch (exception.getStatusCode()) {
case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
try {
ResolvableApiException resolvable = (ResolvableApiException) exception;
resolvable.startResolutionForResult(getActivity(), RC_RESOLVE_LOCATION);
} catch (IntentSender.SendIntentException ex) {
// Ignore the error.
}
break;
case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
showToast(R.string.sorry_your_device_is_not_supported);
break;
}
}
}
请不要忘记处理活动结果。
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
when (requestCode) {
RC_GPS_LOCATION -> {
// do action after user closed GPS settings screen
}
}
}
注意:在某些设备上,会启动一个对话框,允许您一键启用GPS。在其他情况下,用户将被重定向到设置屏幕(但这总比没有好(。