我正在使用指挥和刀。
我有一个 BaseController ，我在那里做BN样板：
protected ButterKnifeController() { }
protected ButterKnifeController(Bundle args) {
super(args);
}
protected abstract View inflateView(@NonNull LayoutInflater inflater, @NonNull ViewGroup container);
@NonNull
@Override
protected View onCreateView(@NonNull LayoutInflater inflater, @NonNull ViewGroup container) {
View view = inflateView(inflater, container);
unbinder = ButterKnife.bind(this, view);
onViewBound(view);
return view;
}
protected void onViewBound(@NonNull View view) { }
@Override
protected void onDestroyView(@NonNull View view) {
super.onDestroyView(view);
unbinder.unbind();
unbinder = null;
}
}
我有几个带FAB的控制器，虽然问题也与简单的按钮相同。
当我第一次路由到控制器时，onClick（）按预期工作。但是当我第二次路由到控制器时，onClick（）并没有。
以下是2个控制器的示例，第一个是我想要路由回的控制器：
WelcomeController - 当我第一次路线时，Fab工作正常
public class WelcomeController extends BaseController {
@BindView(R.id.tv_step_title)
TextView title;
@BindView(R.id.tv_step_message)
TextView message;
@Override
protected View inflateView(@NonNull LayoutInflater inflater, @NonNull ViewGroup container) {
return inflater.inflate(R.layout.controller_base_title_text, container, false);
}
@Override
protected void onViewBound(@NonNull View view) {
super.onViewBound(view);
title.setText(getResources().getText(R.string.wizard_welcome_step_title));
message.setText(getResources().getText(R.string.wizard_welcome_step_message));
}
@Override
protected void onAttach(@NonNull View view) {
super.onAttach(view);
requestVideoPermissions();
}
@OnClick(R.id.fab_next)
public void onFabNextClick(){
getRouter().pushController(RouterTransaction.with(new DiagnosePulseController())
.pushChangeHandler(new FadeChangeHandler())
.popChangeHandler(new FadeChangeHandler()));
}
}
SecondController - 单击allDone Fab路由到WelcomeController但没有onClick（）事件触发。
public class RecordFingertPulseController extends BaseController {
private static final String TAG = RecordFingertPulseController.class.getSimpleName();
public static final String WRIST_PPG_KEY = "wrist_ppg";
public static final String WRIST_TS_KEY = "wrist_ts";
private CameraController mCameraController;
private static final PpgRecordedRxModel PPG_RX_MODEL = PpgRecordedRxModel.getInstance();
private PulseModel mPulseModel = null;
private final CameraController.Callback mRxCameraControllerCallback = new CameraController.Callback() {
@Override
public void onCameraAccessException() {
Log.e(TAG, "CameraAccessException");
}
@Override
public void onCameraOpenException(@Nullable OpenCameraException.Reason reason) {
Log.e(TAG, new OpenCameraException(reason).getMessage());
}
@Override
public void onException(Throwable throwable) {
Log.e(TAG, throwable.getMessage());
}
};
@BindView(R.id.fab_record_pulse)
FloatingActionButton mFabRecordPulse;
@BindView(R.id.fab_all_done)
FloatingActionButton mFabAllDone;
@BindView(R.id.tv_step_title)
MyTextView tv_title;
@BindView(R.id.tv_step_message)
MyTextView tv_message;
public RecordFingertPulseController(Bundle dataBundle) {
super(dataBundle);
}
@Override
protected View inflateView(@NonNull LayoutInflater inflater, @NonNull ViewGroup container) {
return inflater.inflate(R.layout.controller_pulse_recording, container, false);
}
@NonNull
@Override
protected View onCreateView(@NonNull LayoutInflater inflater, @NonNull ViewGroup container) {
return super.onCreateView(inflater, container);
}
@Override
protected void onAttach(@NonNull View view) {
super.onAttach(view);
setupViews();
//Analytics screws camera FPS
FirebaseAnalytics.getInstance(getActivity()).setAnalyticsCollectionEnabled(false);
startCamera();
mCameraController.getConductorLifecycle().onAttach();
subscribeToPpgRecorded();
}
private void subscribeToPpgRecorded() {
PPG_RX_MODEL.getPpgObservable()
.doOnNext(ppg -> Log.d(TAG, "PulseModel before filter :\t"
+ ppg.getPulseName() + "\nPulseModel wrist ppg size"
+ ppg.getWrisrPpgList().size()
+ "\nPulseModel finger ppg size: " + ppg.getFingerPpgList().size()))
.filter(ppg -> ppg.getWrisrPpgList().size() > 0
&& ppg.getFingerPpgList().size() > 0)
.doOnNext(ppg -> Log.d(TAG, "Got PulseModel() after filter with finger ppg size: "
+ ppg.getFingerPpgList().size() + "\twrist ppg size: "
+ ppg.getWrisrPpgList().size()))
.subscribe(ppg -> finalizeWristRecording(ppg));
}
private void finalizeWristRecording(PulseModel ppg) {
// mFabRecordPulse.setEnabled(true);
mFabAllDone.setVisibility(View.VISIBLE);
try {
mPulseModel = ppg.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
Log.d(TAG, "Got the ppg with size: " + ppg.getWrisrPpgList().size());
}
private void startCamera() {
CameraManager cameraManager = (CameraManager) getActivity().getSystemService(Context.CAMERA_SERVICE);
String cameraId = null;
CameraCharacteristics characteristics = null;
Size videoSize = null;
try {
cameraId = cameraManager.getCameraIdList()[0];
characteristics = cameraManager.getCameraCharacteristics(cameraId);
} catch (CameraAccessException e) {
e.printStackTrace();
}
StreamConfigurationMap map = characteristics
.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
if (map == null) {
throw new RuntimeException("Cannot get available preview/video sizes");
}
videoSize = MyUtils.chooseVideoSize(map.getOutputSizes(ImageReader.class));
mCameraController = new CameraController(getActivity(), mRxCameraControllerCallback,
cameraManager, cameraId, videoSize, CameraController.PpgSource.FINGER);
}
@Override
protected void onDetach(@NonNull View view) {
mCameraController.getConductorLifecycle().onDetach();
mCameraController.getCameraClosedObservable().blockingLast();
super.onDetach(view);
}
private void setupViews() {
mFabAllDone.setVisibility(View.GONE);
tv_title.setText(R.string.wizard_record_finger_pulse_step_title);
tv_message.setText(R.string.wizard_record_finger_pulse_step_message);
mFabAllDone.setImageResource(R.drawable.ic_done_all_white_24dp);
}
@OnClick(R.id.fab_record_pulse)
public void onRecordPulseClick(){
mFabRecordPulse.setEnabled(false);
mCameraController.recordPulseClick();
}
@OnClick(R.id.fab_all_done)
public void onAllDoneClick(){
if(mPulseModel.getFingerPpgList().size() > 0 || mPulseModel.getWrisrPpgList().size() > 0){
PulseFirebaseRepository.getRepoInstance().create(mPulseModel);
requestVideoPermissions();
mPulseModel.savePpg();
getRouter().pushController(RouterTransaction.with(new WelcomeController())
.pushChangeHandler(new FadeChangeHandler())
.popChangeHandler(new FadeChangeHandler()));
}else{
if(null != getActivity()){
new AlertDialog.Builder(getActivity())
.setMessage(R.string.empty_pulse_error)
.setPositiveButton(android.R.string.ok, null)
.show();
}
}
}
}
我无法弄清楚原因。这感觉就像一个BN问题。任何帮助将不胜感激。
答案 0 :(得分：1)
我怀疑你的问题与你如何回到WelcomeController有关。当前代码在调用onAllDoneClick()时创建一个新的WelcomeController。最后，你有一个WelcomeRetroller，由RecordFingerPulseController覆盖，由另一个WelcomeController覆盖。
您已在onFabNextClick()添加popChangeHandler的位置设置了后转换。
返回的最简单方法是调用getRouter().popCurrentController();，而不是在RecordFingerPulseController之上添加新的WelcomeController。这将只给你一个WelcomeController。
答案 1 :(得分：1)
如果查看路由器实现，您会发现它有popToRoot(...)方法。这应该从后堆栈中删除所有内容。这是方法及其评论： -
/**
* Pops all {@link Controller}s until only the root is left
*
* @return Whether or not any {@link Controller}s were popped in
* order to get to the root transaction
*/
@UiThread
public boolean popToRoot() {
ThreadUtils.ensureMainThread();
return popToRoot(null);
}
还有其他几种方法可以解决这个问题。
popToTag(...)来将堆栈展开到您想要的控制器。getBackstack()将后台堆栈作为列表获取，然后使用该信息操作。