I am making a VR Android application using VrVideoView. I want to force "close(X, back button)" to be clicked after the video is played. That is, I want to return to MainActivity after the video finishes. Below is the codes I've tried. However, I did not go back to MainActivity after the video was finished. If you know how, please let me know.
1.
videoWidgetView.pauseVideo();
videoWidgetView.seekTo(0);
videoWidgetView.shutdown();
2.
videoWidgetView.pauseVideo();
videoWidgetView.seekTo(0);
finishActivity(0);
3.
videoWidgetView.pauseVideo();
videoWidgetView.seekTo(0);
findViewById(R.id.ui_back_button).performClick();
4.
videoWidgetView.pauseVideo();
videoWidgetView.seekTo(0);
Field f;
try {
f =videoWidgetView.getClass().getSuperclass().getDeclaredField("vrUiLayer");
f.setAccessible(true);
UiLayer vrLayer = (UiLayer) f.get(videoWidgetView);
vrLayer.getView().findViewById(R.id.ui_back_button).performClick();
}
catch (NoSuchFieldException e) {
e.printStackTrace();
}
catch (IllegalAccessException e) {
e.printStackTrace();
}
Just override OnDestroy method and add these lines into it:
#Override
protected void onDestroy() {
videoWidgetView.shutdown();
super.onDestroy();
}
Then call onDestroy() method in onCompletion method:
#Override
public void onCompletion() {
videoWidgetView.seekTo(0);
videoWidgetView.pauseVideo();
onDestroy();
}
Hope it works :)
Related
I am just changing from AWT to JavaFX and im wondering how to work with focus.
For Exampe: In AWT I wrote something like that:
Button bFocus = new Button("Focus");
bFocus.addFocusListener(new FocusListener() {
public void focusGained(FocusEvent e) {
System.out.println("Having the Focus");
}
public void focusLost(FocusEvent e) {
System.out.println("Lost the Focus");
}
});
But how does it work in JavaFX? I tried many different things, but that doesnt work...
JavaFX has an API that defines observable properties with which you can register listeners and respond when they change. Almost all state that belongs to UI elements in JavaFX is represented by these properties, allowing you to register a listener that responds when they change.
So, for example, the superclass of all UI elements, Node has a ReadOnlyBooleanProperty called focused, with which you can register a listener:
Button bFocus = new Button("Focus");
bFocus.focusedProperty().addListener((obs, wasFocused, isNowFocused) -> {
if (isNowFocused) {
System.out.println("Having the Focus");
} else {
System.out.println("Lost the Focus");
}
});
I thought it might be helpful to see an example which specifies the ChangeListener as an anonymous inner class like James_D mention here.
TextField yourTextField = new TextField();
yourTextField.focusedProperty().addListener(new ChangeListener<Boolean>()
{
#Override
public void changed(ObservableValue<? extends Boolean> arg0, Boolean oldPropertyValue, Boolean newPropertyValue)
{
if (newPropertyValue)
{
System.out.println("Textfield on focus");
}
else
{
System.out.println("Textfield out focus");
}
}
});
I hope this answer is helpful!
I am confused on how use the buttons. I open the theme designer and create the button, then on the commands i choose the action execute and go to the Source (saving before)
On the code I have this method, on the simulator do nothing and in the device neither (on the simulator start an Open file window, i am using w7)
#Override
protected boolean onMainCommand105() {
try {
Display.getInstance().execute("fb://profile/14846274855890");
} catch (Exception e) {
Dialog.show("Error!", "Failed to start. installed?", "OK", null);
e.printStackTrace();
}
return true;
}
is this the correct way?
I saw my mistake thanks to this CN1 tutorial
http://www.codenameone.com/how-do-i---handle-eventsnavigation-in-the-gui-builder--populate-the-form-from-code.html
I should use Action Event, not execute
#Override
protected void onMain_Button1Action(Component c, ActionEvent event) {
try {
Display.getInstance().execute("https://www.facebook.com/CatedralAltaPatagonia/?fref=ts");
} catch (Exception e) {
Dialog.show("Error!", "Failed to start. installed?", "OK", null);
e.printStackTrace();
}
}
Or easier :
button.addActionListener(l -> {
System.out.println("test");
});
Do you know how to wait for the user's input in a for loop? I don't mean the showAndWait() method, because I am not opening a new dialogue stage for the user. So for example, each round of the for loop should be waiting for the user to push a button before going ahead with the next round.
How is it possible? Many thanks!
UPDATE:
Now it came to my mind, that it would work with a while(buttonNotPressed){} but is it a good solution? I mean the while loop is running in this case as crazy until the user won't push the button. Or doest it work somehow similarly with wait methods?
Imagine it as a session:
User starts session with handleStart() You give the user 5 questions, one after one. In every iteration, the user can answer the upcoming question and he can save or submit the answer by handleSaveButton() You process the answer as you want, and go ahead with the next iteration. The point is, that the iteration must stop, until the save button hasn't been pressed.
Don't do it like that. The FX toolkit, like any event-driven GUI toolkit, already implements a loop for the purposes of rendering the scene graph and processing user input each iteration.
Just register a listener with the button, and do whatever you need to do when the button is pressed:
button.setOnAction(event -> {
// your code here...
});
If you want the action to change, just change the state of some variable each time the action is performed:
private int round = 0 ;
// ...
button.setOnAction(event -> {
if (round < 5) {
System.out.println("Round "+round);
System.out.println("User's input: "+textArea.getText());
round++ ;
}
});
I recently ran into a similar problem where I wanted something to be executed with an interval (if that's what you mean), until the user fired an event. I found 3 ways to do this:
UPDATE
You should use the stop/cancel method for the custom runnable and timer or else the thread will still be running when you exit the application. Timeline seems do it by itself.
Using a Timer:
Timer timer = new Timer();
TimerTask task = new TimerTask() {
#Override
public void run() {
System.out.println("Printed every second.");
}
};
timer.scheduleAtFixedRate(task, 0, 1000);
//timer.cancel();
With a TimeLine:
Timeline tl = new Timeline(new KeyFrame(Duration.millis(1000), e -> {
System.out.println("Timeline");
}));
tl.setCycleCount(Timeline.INDEFINITE);
tl.play();
//tl.stop();
Or making your own runnable class:
public class Runner implements Runnable {
private final Thread thread = new Thread(this);
private boolean run;
#Override
public void run() {
while(run) {
try {
System.out.println("Printed from loop");
Thread.sleep(1000);
} catch (InterruptedException e) {
run = false;
}
}
}
public void start() {
run = true;
thread.start();
}
public void stop() {
if(run) {
thread.interrupt();
System.out.print("Thread has stopped.");
}
}
}
And then when a person clicks fx. a button the event would stop using the example James_D posted:
Button btn = new Button("Button");
btn.setOnAction(e -> {
timer.cancel();
tl.stop();
runner.stop();
});
In my case, for inside for, had to create 2 index in class, use:
//start method
Timer timer = new Timer();
TimerTask task = new TimerTask()
{
public void run()
{
Platform.runLater(()->{
//... code to run after time, calling the same mehtod, with condition to stop
});
}
};
timer.schedule(task, time);
//end method
Had to use recursive method, incrementing the index with conditions, cause the tasks were been schedule all at the same time, without wait time.
I do not know if it is rigth, but was the solution that i found.
Hope it helps.
ALTERNATIVE SOLUTION W/O PAUSING:
I'm creating a game where I want the user to pick the game difficulty before the game starts. Instead of trying to pause the program midway through, I just put the next step of the code in a separate method which you call once a button is clicked:
private static difficulty;
public static void main(String[] args) {
try {
Application.launch(args);
} catch (UnsupportedOperationException e) {
}
}
public void start(Stage startStage) {
HBox buttons = new HBox();
Button easyButton = new Button("Easy");
Button mediumButton = new Button("Medium");
Button hardButton = new Button("Hard");
buttons.getChildren().addAll(easyButton, mediumButton, hardButton);
buttons.setAlignment(Pos.CENTER);
hbox.getChildren().addAll(buttons);
Scene startScene = new Scene(buttons, 200, 200);
startStage.setScene(startScene);
startStage.show(); // MENU
EventHandler<ActionEvent> playEasy = new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent actionEvent) {
difficulty = 1; // SET DIFFICULTY
startStage.close(); // CLOSE MENU
play(); // RUN GAME ON EASY
}
};
EventHandler<ActionEvent> playMedium = new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent actionEvent) {
difficulty = 2; // SET DIFFICULTY
startStage.close(); // CLOSE MENU
play(); // RUN GAME ON MEDIUM
}
};
EventHandler<ActionEvent> playHard = new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent actionEvent) {
difficulty = 3; // SET DIFFICULTY
startStage.close(); // CLOSE MENU
play(); // RUN GAME ON HARD
}
};
easyButton.setOnAction(playEasy);
mediumButton.setOnAction(playMedium);
hardButton.setOnAction(playHard);
}
public void play() {
// WRITE GAME CODE HERE
}
To solve your specific problem, you could probably pass the startStage into the play method and then just update the scene there...but regardless I do hope this helps someone whos having trouble on how to use buttons! :)
During my override of OnActivate() in my view-model, I need to call GetView() in order to focus an element. When I do this after I have previously activated my view, it's fine. But when I call this the first activation, it fails.
I was able to get it to work by swapping a few lines in ConductorBaseWithActiveItem.ChangeActiveItem. The original is as follows:
protected virtual void ChangeActiveItem(T newItem, bool closePrevious) {
ScreenExtensions.TryDeactivate(activeItem, closePrevious);
newItem = EnsureItem(newItem);
if(IsActive)
ScreenExtensions.TryActivate(newItem);
activeItem = newItem;
NotifyOfPropertyChange("ActiveItem");
OnActivationProcessed(activeItem, true);
}
and with my changes:
protected virtual void ChangeActiveItem(T newItem, bool closePrevious) {
ScreenExtensions.TryDeactivate(activeItem, closePrevious);
newItem = EnsureItem(newItem);
activeItem = newItem;
NotifyOfPropertyChange("ActiveItem");
if (IsActive)
ScreenExtensions.TryActivate(newItem);
OnActivationProcessed(activeItem, true);
}
This seems to work. Notifying that "ActiveItem" changed triggers the code to load and cache the view. Then ScreenExtensions.TryActivate calls my OnActivate override.
Question: I haven't noticed any problems doing this, but I'm curious if anyone knows better than I do what repercussions this change could have?
Thanks!
One thing you could try is overriding Caliburn's OnViewAttached method and trying to focus it there. That being said, in MVVM, focus is more of a View concern, so if possible, that logic should be moved from the ViewModel to the View.
One way you may be able to solve this is by creating an attached behavior (you will need a reference to the Microsoft.Expression.Interactions assembly):
public class FocusWhenVisibleBehavior : Behavior<FrameworkElement>
{
protected override void OnAttached()
{
this.AssociatedObject.Loaded += this.Loaded;
this.AssociatedObject.IsVisibleChanged += this.VisibleChanged;
}
protected override void OnDetaching()
{
this.AssociatedObject.Loaded -= this.Loaded;
this.AssociatedObject.IsVisibleChanged -= this.VisibleChanged;
}
private void Loaded(object sender, RoutedEventArgs e)
{
this.TryFocus();
}
private void VisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
this.TryFocus();
}
private void TryFocus()
{
if (this.AssociatedObject.IsLoaded && this.AssociatedObject.IsVisible)
{
// Focus the control
this.AssociatedObject.Focus();
}
}
}
And that attaching that behavior to whatever control you want to focus:
<Button>
<i:Interaction.Behaviors>
<b:FocusWhenVisibleBehavior/>
</i:Interaction.Behaviors>
</Button>
I would like to display in a toast which network connection is available.
But when I start my app it shows me the layout, but it doesn't make a toast.
Did I forget something?
// Now i shows every second a toast. it beginns with the right one but then it goes to the next one..
I also have a button now, which shows me the networktyp in a textview. But it always just show the 4g..
Thanks in advance for your help!
Button start;
TextView ergebniss;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
start = (Button)findViewById(R.id.start);
start.setOnClickListener(this);
ergebniss = (TextView) findViewById(R.id.textView1);
}
public void getNetworkClass(Context context) {
TelephonyManager mTelephonyManager = (TelephonyManager) context
.getSystemService(Context.TELEPHONY_SERVICE);
int networkType = mTelephonyManager.getNetworkType();
switch (networkType) {
case TelephonyManager.NETWORK_TYPE_GPRS:
case TelephonyManager.NETWORK_TYPE_EDGE:
case TelephonyManager.NETWORK_TYPE_CDMA:
case TelephonyManager.NETWORK_TYPE_1xRTT:
case TelephonyManager.NETWORK_TYPE_IDEN:
Toast.makeText(getApplicationContext(), "2G", Toast.LENGTH_LONG).show();
ergebniss.setText("2G");
case TelephonyManager.NETWORK_TYPE_UMTS:
case TelephonyManager.NETWORK_TYPE_EVDO_0:
case TelephonyManager.NETWORK_TYPE_EVDO_A:
case TelephonyManager.NETWORK_TYPE_HSDPA:
case TelephonyManager.NETWORK_TYPE_HSUPA:
case TelephonyManager.NETWORK_TYPE_HSPA:
case TelephonyManager.NETWORK_TYPE_EVDO_B:
case TelephonyManager.NETWORK_TYPE_EHRPD:
case TelephonyManager.NETWORK_TYPE_HSPAP:
Toast.makeText(getApplicationContext(), "3G", Toast.LENGTH_LONG).show();
ergebniss.setText("3G");
case TelephonyManager.NETWORK_TYPE_LTE:
Toast.makeText(getApplicationContext(), "4G", Toast.LENGTH_LONG).show();
ergebniss.setText("4G");
}
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
getNetworkClass(this);
}
}
You need to at least show the Toast.
Toast.makeText(getApplicationContext(), "2G", Toast.LENGTH_LONG).show();
And you're missing a break; (or return ..) statement after the Toast.makeText() calls.