I'm working on Eclipse plugin and I add an 16x16 icon to the statusbar by
ToolBarManager manager = new ToolBarManager(SWT.FLAT | SWT.HORIZONTAL);
manager.add(updatingNewsAction);
Where updatingNewsAction is a class that extends org.eclipse.jface.action.Action.
However I've got problem with removing the updatingNewsAction from the toolbar. It's removed, but I can see that only when something updates the statusbar - for example minimazing/maximazing the borderline views. Then after reading some blog post I've wrote:
PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
#Override
public void run() {
IWorkbench wb = PlatformUI.getWorkbench();
IWorkbenchWindow win = wb.getActiveWorkbenchWindow();
IWorkbenchPage page = win.getActivePage();
IWorkbenchPart part = page.getActivePart();
IWorkbenchPartSite site = part.getSite();
IViewSite vSite = (IViewSite) site;
IActionBars actionBars = vSite.getActionBars();
if (actionBars == null) {
return;
}
IStatusLineManager statusLineManager = actionBars.getStatusLineManager();
if (statusLineManager == null) {
return;
}
statusLineManager.update(true);
}
});
Which is a step forward, because it gets updated when switching focus between views, but still it doesn't happen immediately and without user interactions. How to update the status bar programmatically immediately?
Related
I am trying to make a slider between TouchImageView and PlayerView (Exoplayer) but I am unable to catch up with certain issues that are persisting even after several changes. All the suggestions and answers are welcome. Pardon my questioning skills and please let me know if more inputs are needed for your analysis. Kindly also let me know if there is any other alternative to successfully meet my expectations of properly implementing views smoothly in ViewPager.
Problem description:-
Issues related to click on view :-
When the image is clicked, the audio of next video (if any) starts playing in background.
The same issue is with PlayerView. When the video thumbnail is clicked, the audio of clicked video as well as next video plays together.
Issues related to slider :-
When an we slide and reach to an image preceding to a video, the audio starts playing in background. However, after sliding once toward video and sliding again in forward or backward direction from video for once, the audio stops. But this issue persists after viewing more than one images in forward or backward direction of video.
Attempts made by me to solve this issue :-
I tried to use playerView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {...}) method in PagerAdapter to handle player states while sliding between views. Unfortunately, I was unable to grasp to use different player states.
I also tried to use viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {...} method in StatusViewer class.
StatusViewer Java class (Setting PagerAdapter class object inViewPager) :-
modelFeedArrayList = (ArrayList<File>) getIntent().getSerializableExtra("modelFeedArrayList");
position = intent.getIntExtra("position", 0);
ImageSlideAdapter imageSlideAdapter = new ImageSlideAdapter(this,modelFeedArrayList,position);
viewPager.setAdapter(imageSlideAdapter);
viewPager.setCurrentItem(position);
viewPager.setOffscreenPageLimit(0);
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
File currentFile = modelFeedArrayList.get(position);
String filePath = currentFile.toString();
if (filePath.endsWith(".jpg") || currentPage == position){
currentPage = position;
ImageSlideAdapter.player.pause();
}
else {
currentPage = position;
ImageSlideAdapter.player.play();
}
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
ImageSliderAdapter (PagerAdapter) (code mentioned below is inside instantiateItem):-
File currentFile = modelFeedArrayList.get(position);
String filePath = currentFile.toString();
if (currentFile.getAbsolutePath().endsWith(".mp4")) {
statusImageView.setVisibility(View.GONE);
playerView.setVisibility(View.VISIBLE);
player = new ExoPlayer.Builder(context).build();
MediaItem mediaItem = MediaItem.fromUri(filePath);
player.addMediaItem(mediaItem);
playerView.setPlayer(player);
player.prepare();
playerView.setBackgroundColor(context.getResources().getColor(android.R.color.black));
playerView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
#Override
public void onViewAttachedToWindow(View v) {
Log.d("Filepath", filePath);
Log.d("Position", "" + position);
}
#Override
public void onViewDetachedFromWindow(View v) {
if (filePath.endsWith(".jpg") || currentPage == position || modelFeedArrayList.get(currentPage).getAbsolutePath().endsWith(".jpg")){
currentPage = position;
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
}
else {
player.release();
Objects.requireNonNull(playerView.getPlayer()).release();
}
}
});
} else {
playerView.setVisibility(View.GONE);
statusImageView.setVisibility(View.VISIBLE);
Glide.with(context).load(modelFeedArrayList.get(position)).into(statusImageView);
statusImageView.setBackgroundColor(context.getResources().getColor(android.R.color.black));
}
Objects.requireNonNull(container).addView(itemView);
return itemView;
}
#Override
public void destroyItem(#NonNull #NotNull ViewGroup container, int position, #NonNull #NotNull Object object) {
container.removeView((ConstraintLayout) object);
}
Thank you StackOverflow community for viewing this question. I resolved the above issue by below mentioned modifications :-
Changes in ImageSliderAdapter (PagerAdapter) :-
-> Below mentioned code was added in onViewAttachedToWindow(View v) :-
if (filePath.endsWith(".jpg") || currentPage == position || modelFeedArrayList.get(currentPage).getAbsolutePath().endsWith(".jpg")){
currentPage = position;
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
}
else {
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
if (filePath.endsWith(".mp4")){
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
}
else {
player.play();
Objects.requireNonNull(playerView.getPlayer()).play();
}
}
-> Below mentioned code was added in onViewDetachedFromWindow(View v) :-
if (filePath.endsWith(".mp4")){
player.release();
Objects.requireNonNull(playerView.getPlayer()).release();
}
-> player.play() was added after player.prepare().
Changes in StatusViewer Java class :-
-> The below changes cured the issue of player malfunctioning and player's play state and release state. I used the smoothScroll: false in setCurrentItem.
viewPager.setCurrentItem(position,false);
Old question: Codename One app not provide real location
We still have problem getting current location.
Sometimes it's ok, "Localizzazione..." dialog shows, then location ok callback dispose the dialog.
Sometimes the dialog is never disposed and I don't see GPS in the top bar, which is visible when location is ok and dispose the dialog.
Slider s1 = new Slider();
Display.getInstance().callSerially(() -> {
blocco_loc_in_corso = makeDialog("Localizzazione...", s1, null, 'a');
blocco_loc_in_corso.show();
});
LocationManager locationManager = LocationManager.getLocationManager();
locationManager.setLocationListener(new LocationListener() {
#Override
public void locationUpdated(Location location) {
if(location != null) {
Display.getInstance().callSerially(() -> {
if(blocco_loc_in_corso != null) {
blocco_loc_in_corso.dispose();
}
});
paintLocation(location, true);
}
}
#Override
public void providerStateChanged(int newState) {
}
}, new LocationRequest(LocationRequest.PRIORITY_HIGH_ACCUARCY, 1000));
I have this problem for at least 6 months. We only need to block user until we have his GPS location which may can change (GPS updates callback).
Edited:
public Dialog makeDialog(String label, Component c, String buttonText, char btIcon) {
Dialog dlg_r = new Dialog();
Style dlgStyle = dlg_r.getDialogStyle();
dlgStyle.setBorder(Border.createEmpty());
dlgStyle.setBgTransparency(255);
dlgStyle.setBgColor(0xffffff);
Label title = dlg_r.getTitleComponent();
title.getUnselectedStyle().setFgColor(0xff);
title.getUnselectedStyle().setAlignment(Component.LEFT);
dlg_r.setLayout(BoxLayout.y());
Label blueLabel = new Label(label);
blueLabel.setShowEvenIfBlank(true);
blueLabel.getUnselectedStyle().setBgColor(0xff);
blueLabel.getStyle().setFgColor(0x0a0afc);
blueLabel.getStyle().setAlignment(Component.CENTER);
blueLabel.getUnselectedStyle().setPadding(1, 1, 1, 1);
blueLabel.getUnselectedStyle().setPaddingUnit(Style.UNIT_TYPE_PIXELS);
dlg_r.add(blueLabel);
dlg_r.add(c);
if (buttonText != null) {
Button dismiss = new Button(buttonText);
dismiss.getAllStyles().setBorder(Border.createEmpty());
dismiss.getAllStyles().setFgColor(0);
dismiss.getAllStyles().set3DText(true, true);
dismiss.setIcon(FontImage.createMaterial(btIcon, dismiss.getStyle()));
dismiss.addActionListener(((evt) -> {
dlg_r.dispose();
}));
dlg_r.add(dismiss);
}
return dlg_r;
}
To make sure this code is threadsafe make the following change:
public void locationUpdated(Location location) {
locationFound = true;
// ...
}
Then in the make dialog method:
dlg_r.addShowListener(e -> {
if(locationFound) {
dlg_r.dispose();
}
});
Since this event can happen in the dead time of showing the dialog transition.
I want to show some pages in the first time app is installed, and the next time when I open the app show some other pages.
I tried this code
protected override void OnStart()
{
if (Application.Current.Properties.ContainsKey("id"))
{
MainPage = new NavigationPage(new Page2());
}
else
{
Application.Current.Properties["id"] = 2;
MainPage = new NavigationPage(new Page1());
}
}
The values in the Properties dictionary are only stored when the app goes to sleep
For a cross-platform approach, you can use the Settings Plugin
Then you can create a boolean property, for example, DidOpenOnce, and if it is false, show your initial welcome page or whatever. Then afterwards, set it to true.
protected void checkApplicationInstallState()
{
//retreive
var prefs = Application.Context.GetSharedPreferences("MyApp", FileCreationMode.Private);
var somePref = prefs.GetBool("IsApplicationOpenedForOnce", null);
if (!somePref) {
// Your Application is opened for the very first time. Now change the value to true as you have now opened the app so next time opening this application should get a true value.
var prefEditor = prefs.Edit();
prefEditor.PutBool(true, "IsApplicationOpenedForOnce");
prefEditor.Commit();
}
}
public MainPage()
{
InitializeComponent();
if (Application.Current.Properties.ContainsKey("FirstUse"))
{
//Do things when it's NOT the first use...
loadinit();
}
else
{
Application.Current.Properties["FirstUse"] = false;
//Do things when it IS the first use...
}
}
public async void loadinit()
{
await Navigation.PushAsync(new LoadPage());
}
I need to make instrument, that allows users to choose photo from Gallery. After choosing photo, it will be shown to the user in ImageBox.
Problem is, that when user chooses some photo in Gallery, Gallery closes, ImageBox stays empty. Code returns no error. Please help me to find error and solve this problem. Thank you.
Here is a code:
ImagePath = String.Empty
filePicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary
filePicker.ViewMode = PickerViewMode.Thumbnail
' Filter to include a sample subset of file types
filePicker.FileTypeFilter.Clear()
filePicker.FileTypeFilter.Add(".bmp")
filePicker.FileTypeFilter.Add(".png")
filePicker.FileTypeFilter.Add(".jpeg")
filePicker.FileTypeFilter.Add(".jpg")
filePicker.PickSingleFileAndContinue()
Dim BitmapImage = New BitmapImage()
Await BitmapImage.SetSourceAsync(filePicker)
MyPhoto.Source = BitmapImage
If you are using filePicker.PickSingleFileAndContinue() you need to add code into the App_Activated
You will notice that PickSingleFileAndContinue() is a void method will not return the picked file were as PickSingleFileAsync() will return a file.
Code block is in C#,sorry i have only limited knowledge in vb, you can find vb sample below
Similar SO Answer
C#
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
StorageFile file = await openPicker.PickSingleFileAsync();
As your are using PickSingleFileAndContinue() you need to implement ContinuationManager that were you get the file you picked.
In the App.xaml.cs
public ContinuationManager ContinuationManager { get; private set; }
This will fire when the app get activated
protected async override void OnActivated(IActivatedEventArgs e)
{
base.OnActivated(e);
continuationManager = new ContinuationManager();
Frame rootFrame = CreateRootFrame();
await RestoreStatusAsync(e.PreviousExecutionState);
if(rootFrame.Content == null)
{
rootFrame.Navigate(typeof(MainPage));
}
var continuationEventArgs = e as IContinuationActivatedEventArgs;
if (continuationEventArgs != null)
{
Frame scenarioFrame = MainPage.Current.FindName("ScenarioFrame") as Frame;
if (scenarioFrame != null)
{
// Call ContinuationManager to handle continuation activation
continuationManager.Continue(continuationEventArgs, scenarioFrame);
}
}
Window.Current.Activate();
}
Usage in the page
Assume that one page of your app contains code that calls a FileOpenPicker to pick an existing file. In this class, implement the corresponding interface from the ContinuationManager helper class. When your app uses a FileOpenPicker, the interface to implement is IFileOpenPickerContinuable.
public sealed partial class Scenario1 : Page, IFileOpenPickerContinuable
{
...
//inside this you have this
private void PickAFileButton_Click(object sender, RoutedEventArgs e)
{
...
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
// Launch file open picker and caller app is suspended
// and may be terminated if required
openPicker.PickSingleFileAndContinue();
}
}
switch (args.Kind)
{
case ActivationKind.PickFileContinuation:
var fileOpenPickerPage = rootFrame.Content as IFileOpenPickerContinuable;
if (fileOpenPickerPage != null)
{
fileOpenPickerPage.ContinueFileOpenPicker(args as FileOpenPickerContinuationEventArgs);
}
break;
...
}
Download msdn sample here
Msdn documentation using FilePicker
I navigate between pages with Navigation Helper class which VS 2013 added when solution created, But scroll state most of controls (Like Pivot, Hub) does not saved like in Windows Phone 8.x Silverlight.
What should I do for implement this behaviour? Should I handle scrolling state by myself and restore scroll when i go back in visited page?
Thanks.
UPDATE1:
I need save selected pivot/hub item etc, when i go back to page.
UPDATE2:
void navigationHelper_SaveState(obj sender,SaveStateEventArgs e)
{
e.PageState["SelectedSection"] = MainHub.SectionsInView;
}
void navigationHelper_LoadState(obj sender,LoadStateEventArgs e)
{
if (e.PageState != null)
{
var sections = e.PageState["SelectedSection"] as IList<HubSection>;
if (sections != null && sections.Any())
MainHub.ScrollToSection(sections[0]);
}
}
On the page where you use the hub, set the navigation cache mode in constructor:
this.NavigationCacheMode = NavigationCacheMode.Enabled;
or in XAML:
<Page
x:Class="App.HubPage"
....
xmlns:data="using:App.Data"
NavigationCacheMode="Enabled"
....
Better use:
this.NavigationCacheMode = NavigationCacheMode.Required;
before:
this.InitializeComponent();
And add:
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
if (e.NavigationMode == NavigationMode.Back)
this.NavigationCacheMode = NavigationCacheMode.Disabled;
}
to remove cache on back navigation from page.