Android位置請求PRIORITY_HIGH_ACCURACY無效

Question

我的Android應用需要高精度的位置跟蹤。 在應用程序啟動時，它會以編程方式讀取位置設置，並在未選擇高精度時顯示屏幕。

我將Google的官方示例（ https://developers.google.com/android/reference/com/google/android/gms/location/SettingsClient ）改編為Kotlin。

這在華為手機上有效，但在三星S7和S8上失敗：如果用戶選擇了Power平衡 ，則會出現一個對話框，並且位置跟蹤設置為高精度 。 但是，如果之前僅選擇了GPS ，則不會拋出ApiException ，並且設置保持不變。

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...
        }
    }
}

任何提示將非常感謝，謝謝:)

Answer 1

我遇到了同樣的問題。 我找到了解決方案。

    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;
            }
        }
    }

請不要忘記處理活動結果。

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：在某些設備上，會啟動一個對話框，允許您一鍵啟用GPS。 在其他情況下，用戶將被重定向到設置屏幕（但這總比沒有好）。

Answer 2

我有同樣的問題與s8，所以我檢查設備，如果它是我用PRIORITY_BALANCED_POWER_ACCURACY提出請求，它有效，但有一些延遲。