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使用startResolutionForResult()时,未在片段中调用onActivityResult();

gps android-fragments android java

Jatin Bansal · 技术社区 · 7 年前

打开a GPS dialog 在片段中,当GPS被禁用,但当我单击按钮“确定”和“取消”时 OnActivityResult() 不在片段中调用。

关于这个问题,有谁能给我指点一下吗?? 此问题仅在片段中发生,而在活动中不发生。

 public void openGpsDialog() {
     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 state = 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(
                                    homeActivity, REQUEST_LOCATION);
                        } 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
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    final LocationSettingsStates states = LocationSettingsStates.fromIntent(data);
    switch (requestCode) {
        case REQUEST_LOCATION:
            switch (resultCode) {
                case Activity.RESULT_OK:
                    Toast.makeText(HomeActivity.this, "gps enabled", Toast.LENGTH_SHORT).show();

                    break;
                case Activity.RESULT_CANCELED:
                    // The user was asked to change settings, but chose not to

                    break;
                default:
                    break;
            }
            break;
    }
}

1 回复 | 直到 7 年前

MJM 7 年前

您已传递了意图为的活动对象,因此结果将在活动中返回,而不是在片段中返回

status.startResolutionForResult(homeActivity, REQUEST_LOCATION);

简单的解决方案是将您的响应从活动传递到片段

活动代码

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.dualPane);
    fragment.onActivityResult(requestCode, resultCode, data);
}

或

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    for (Fragment fragment : getChildFragmentManager().getFragments()) {
        fragment.onActivityResult(requestCode, resultCode, data);
    }
}