使用startResolutionForResult（）時，片段中不會調用onActivityResult（）；

Question

禁用GPS dialog在片段中打開GPS dialog ，但是當我單擊按鈕“確定”和“取消”時，片段中不會調用OnActivityResult() 。

有人可以指導我解決這個問題嗎？ 此問題僅在片段中發生，而在活動中不發生。

 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;
    }
}

Answer 1

您已使用Intent傳遞了活動對象，因此結果將在Activity中返回，而不是分段

status.startResolutionForResult(homeActivity, REQUEST_LOCATION);

簡單的解決方案是將您的響應從活動傳遞到片段

活動代碼

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

要么

@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);
    }
}