Question

所以我对 LocationSettingsRequest对话框有疑问，以便在GPS未开启时显示。

以下是代码：

enableGpsSetting：

public void enableGpsSetting(){
    if (mGoogleApiClient == null) {

        mGoogleApiClient = new GoogleApiClient.Builder(context)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();
        mGoogleApiClient.connect();

        LocationRequest locationRequest = LocationRequest.create();
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locationRequest.setInterval(30 * 1000);
        locationRequest.setFastestInterval(5 * 1000);
        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest);

        builder.setNeedBle(true);
        //**************************
        builder.setAlwaysShow(true); //this is the key ingredient
        //**************************

        PendingResult<LocationSettingsResult> result =
                LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());
        result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
            @Override
            public void onResult(LocationSettingsResult result) {
                final Status status = result.getStatus();
                //final LocationSettingsStates = result.getLocationSettingsStates();
                switch (status.getStatusCode()) {
                    case LocationSettingsStatusCodes.SUCCESS:
                        // All location settings are satisfied. The client can initialize location
                        // requests here.
                        //...
                        break;
                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        // Location settings are not satisfied. But could be fixed by showing the user
                        // a dialog.
                        try {
                            // Show the dialog by calling startResolutionForResult(),
                            // and check the result in onActivityResult().
                            status.startResolutionForResult(
                                    MainActivity.this,
                                    REQUEST_CHECK_SETTINGS);
                        } catch (IntentSender.SendIntentException e) {
                            // Ignore the error.
                        }
                        break;
                    case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                        // Location settings are not satisfied. However, we have no way to fix the
                        // settings so we won't show the dialog.
                        //...
                        break;
                }
            }
        });
    }
}

onActivityResult

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)   {
    switch (requestCode) {
 // Check for the integer request code originally supplied to   startResolutionForResult().
        case REQUEST_CHECK_SETTINGS:
            switch (resultCode) {
                case Activity.RESULT_OK:
                    //startLocationUpdates();
                    break;
                case Activity.RESULT_CANCELED:
                    enableGpsSetting();
                    break;
            }
            break;
    }
}

我所做的更改是Outerclass.this到MainActivity.this 我正在扩展FragmentActivity，不知道它是否有任何差异。

当代码作为指导并且不起作用时，它有点奇怪。

Answer 1

这个问题发生在我身上一次。（实际上今天！）

我正在测试其他内容，并且在我的应用程序中的某个时刻调用此对话框来更改GPS设置。经过多次测试，我已经厌倦了所有时间拒绝许可gps。（GPS对我测试的内容并不重要。）所以我使用了never按钮。对话框从未出现过。然后，当我再次需要他时，他没有出现。

在线

final状态= result.getStatus（）

他开始返回代码8502 - 并进入开关案例SETTINGS_CHANGE_UNAVAILABLE。

case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE：

如果是这种情况，您可以卸载应用程序并重新安装，则会再次出现对话框更改配置。

Answer 2

使用以下代码。

protected void createLocationRequest() {
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(LocationServices.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();
    mGoogleApiClient.connect();

    LocationRequest mLocationRequest = new LocationRequest();
    mLocationRequest.setInterval(1000*5);
    mLocationRequest.setFastestInterval(1000*2);
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
            .addLocationRequest(mLocationRequest);

    PendingResult<LocationSettingsResult> result =
            LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient,
                    builder.build());

    result.setResultCallback(new ResultCallback<LocationSettingsResult>() {

        @Override
        public void onResult(LocationSettingsResult result) {
            final Status status = result.getStatus();
           // final LocationSettingsStates = result.getLocationSettingsStates();
            switch (status.getStatusCode()) {
                case LocationSettingsStatusCodes.SUCCESS:
                    // All location settings are satisfied. The client can
                    // initialize location requests here.

                    break;
                case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                    // Location settings are not satisfied, but this can be fixed
                    // by showing the user a dialog.
                    try {
                        // Show the dialog by calling startResolutionForResult(),
                        // and check the result in onActivityResult().
                        status.startResolutionForResult(
                                CurrentActivity.this,
                                REQUEST_CHECK_SETTINGS);
                    } catch (IntentSender.SendIntentException e) {
                        // Ignore the error.
                    }
                    break;
                case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:

                    break;
            }
        }
    });
}

LocationSettingsRequest对话框从不显示

2 个答案: