I have create a progress bar for my bootstrapper installer. It goes correctly upto 100% while installing. But while uninstalling it only goes to 50% and stops there. Below is my code.
In the constructor of my ViewModel class.
this.Bootstrapper.CacheAcquireProgress += (sender, args) =>
{
this.cacheProgress = args.OverallPercentage;
this.Progress = (this.cacheProgress + this.executeProgress) / 2;
};
this.Bootstrapper.ExecuteProgress += (sender, args) =>
{
this.executeProgress = args.OverallPercentage;
this.Progress = (this.cacheProgress + this.executeProgress) / 2;
};
Then getter and setter as follows.
private int progress;
public int Progress
{
get { return progress; }
set
{
this.progress = value;
RaisePropertyChanged("Progress");
}
}
private int cacheProgress;
private int executeProgress;
what am I doing wrong here? Why does the bar stay at 50% while uninstalling, though the uninstall is complete? Please advice.
Not every Apply action will have a Cache phase, use the OnApplyPhaseCount (in v4 it's in the OnApplyBegin) callback to know what that denominator should be.
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);
It seems that Blazor makes it easy for the client to call a server's method using something called SignalR underneath. But when I searched if Blazor does that for the other direction, the answer was that Blazor does not do that and I have to implement it myself using SignalR. So, I thought about polling.
That is, I like to read a property or call a method in the server's object at an interval to determine if something has changed. To test this, I added this property to the WeatherForecastService class. The property increases every time when read.
int _Value = 0;
public int Value
{
get
{
_Value++;
return _Value;
}
}
In the weather tablet sample plage, I removed the code to display the weather and added this.
<p>This component demonstrates fetching data from a service.</p>
<div>Value = #this.Value</div>
#code {
private int Value = 0;
protected override async Task OnInitializedAsync()
{
System.Timers.Timer t = new System.Timers.Timer();
t.Elapsed += (s, e) => { Value = ForecastService.Value; };
t.Interval = 1000;
t.Start();
}
}
And it did not work. I found an existing question, but it uses F# which I don't understand, and I don't know what ClientTImer is, so the answer was not helpful to me.
t.Elapsed += async (s, e) =>
{
Value = ForecastService.Value;
await InvokeAsync(StateHasChanged);
};
Okay I will try and explain this to the best of my ability. I have searched and searched all day for a solution to this issue but can't seem to find it. The problem that I am having is that I have a list of scriptable objects that I am basically using for custom properties to create gameobjects off of. One of those properties that I need to get is a Texture2D that I turn into a sprite. Therefor, I am using UnityWebRequest in a Coroutine and am having to yield the response. After I get the response I am trying to set the variable. However even using Lambdas it seems to me that if I yield return the response before the result it will not set the variable. So every time I check the variable after the Coroutine it comes back null. If someone could enlighten me with what I am missing here that would be just great!
Here is the Scriptable Object Class I am using.
[CreateAssetMenu(fileName = "new movie",menuName = "movie")]
public class MovieTemplate : ScriptableObject
{
public string Title;
public string Description;
public string ImgURL;
public string mainURL;
public string secondaryURL;
public Sprite thumbnail;
}
Here is the call to the Coroutine
foreach (var item in nodes)
{
templates.Add(GetMovieData(item));
}
foreach (MovieTemplate movie in templates)
{
StartCoroutine(GetMovieImage(movie.ImgURL, result =>
{
movie.thumbnail = result;
}));
}
Here is the Coroutine itself
IEnumerator GetMovieImage(string url, System.Action<Sprite> result)
{
using (UnityWebRequest web = UnityWebRequestTexture.GetTexture(url))
{
yield return web.SendWebRequest();
var img = DownloadHandlerTexture.GetContent(web);
result(Sprite.Create(img, new Rect(0, 0, img.width, img.height), Vector2.zero));
}
}
From what you desribe it still seems that the texture is somehow disposed as soon as the routine finishes. My guess would be that it happens due to the using block.
I would store the original texture reference
[CreateAssetMenu(fileName = "new movie",menuName = "movie")]
public class MovieTemplate : ScriptableObject
{
public string Title;
public string Description;
public string ImgURL;
public string mainURL;
public string secondaryURL;
public Sprite thumbnail;
public Texture texture;
public void SetSprite(Sprite newSprite, Texture newTexture)
{
if(texture) Destroy(texture);
texture = newTexture;
var tex = (Texture2D) texture;
thumbnail = Sprite.Create(tex, new Rect(0, 0, tex.width, tex.height), Vector2.zero);
}
}
So you can keep track of the texture itself as well, let it not be collected by the GC but also destroy it when not needed anymore. Usually Texture2D is removed by the GC as soon as there is no reference to it anymore but Texture2D created by UnityWebRequest might behave different.
Than in the webrequest return the texture and don't use using
IEnumerator GetMovieImage(string url, System.Action<Texture> result)
{
UnityWebRequest web = UnityWebRequestTexture.GetTexture(url));
yield return web.SendWebRequest();
if(!web.error)
{
result?.Invoke(DownloadHandlerTexture.GetContent(web));
}
else
{
Debug.LogErrorFormat(this, "Download error: {0} - {1}", web.responseCode, web.error);
}
}
and finally use it like
for (int i = 0; i < templates.Count; i++)
{
int index = i;//If u use i, it will be overriden too so we make a copy of it
StartCoroutine(
GetMovieImage(
templates[index].ImgURL,
result =>
{
templates[index].SetSprite(result);
})
);
}
The problem is with this section of your code :
foreach (MovieTemplate movie in templates)
{
StartCoroutine(GetMovieImage(movie.ImgURL, result =>
{
movie.thumbnail = result;//wrong movie obj
}));
}
Here you will loose refrence to movie object(override by foreach) before the result of callback arrive .
Change it to something like this :
foreach (int i=0;i<templates.Length;i++)
{
int index= i;//If u use i, it will be overriden too so we make a copy of it
StartCoroutine(GetMovieImage(movie.ImgURL, result =>
{
templates[index].thumbnail = result;
}));
}
I really want to know how do I can update the position of the user in the map while the UWP app was running in bakground
Here is my code right now
private async void PinPoints()
{
//Pin point to the map
Windows.Devices.Geolocation.Geopoint position = await Library.Position();
double lat = position.Position.Latitude;
double lon = position.Position.Longitude;
//Geoposition alttest = await Library.Temp();
//alt = alttest.Coordinate.Altitude;
DependencyObject marker = Library.Marker(""
//+ Environment.NewLine + "Altitude " + alt
);
Display.Children.Add(marker);
Windows.UI.Xaml.Controls.Maps.MapControl.SetLocation(marker, position);
Windows.UI.Xaml.Controls.Maps.MapControl.SetNormalizedAnchorPoint(marker, new Point(0.5, 0.5));
Display.LandmarksVisible = true;
Display.ZoomLevel = 16;
Display.Center = position;
}
This function will pinpoint the current location for me but it will do only when user open this page due to I've put it in the public Map() {}
Current : Get the location when open map page and when I walk the map still be the same place
What I want : The position keep changing while I move on and also run on background (If application is close location data still changed)
Is there any code to solve this location problem if I have to add code where should I fix and what should I do?
Additional now I perform the background (Not sure is it work or not) by create the Window Runtime Component (Universal) with class like this
*I already put this project as the reference of the main one
namespace BackgroundRunning
{
public sealed class TaskBG : IBackgroundTask
{
BackgroundTaskDeferral _deferral = null;
Accelerometer _accelerometer = null;
Geolocator _locator = new Geolocator();
public void Run(IBackgroundTaskInstance taskInstance)
{
_deferral = taskInstance.GetDeferral();
try
{
// force gps quality readings
_locator.DesiredAccuracy = PositionAccuracy.High;
taskInstance.Canceled += taskInstance_Canceled;
_accelerometer = Windows.Devices.Sensors.Accelerometer.GetDefault();
_accelerometer.ReportInterval = _accelerometer.MinimumReportInterval > 5000 ? _accelerometer.MinimumReportInterval : 5000;
_accelerometer.ReadingChanged += accelerometer_ReadingChanged;
}
catch (Exception ex)
{
// Add your chosen analytics here
System.Diagnostics.Debug.WriteLine(ex);
}
}
void taskInstance_Canceled(IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason)
{
_deferral.Complete();
}
async void accelerometer_ReadingChanged(Windows.Devices.Sensors.Accelerometer sender, Windows.Devices.Sensors.AccelerometerReadingChangedEventArgs args)
{
try
{
if (_locator.LocationStatus != PositionStatus.Disabled)
{
try
{
Geoposition pos = await _locator.GetGeopositionAsync();
}
catch (Exception ex)
{
if (ex.HResult != unchecked((int)0x800705b4))
{
System.Diagnostics.Debug.WriteLine(ex);
}
}
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex);
}
}
public void Dispose()
{
if (_accelerometer != null)
{
_accelerometer.ReadingChanged -= accelerometer_ReadingChanged;
_accelerometer.ReportInterval = 0;
}
}
}
}
Your Solution :
Make 3 projects in your solution.
1> Background Task "references App_Code"
2> App_Code "contains calculations,mostly Backend Code"
3> Map(Main Project) "references App_Code"
Register a background Task to your project and specify the time interval after which it should run again
Scenario 1> App Open,User Requests Update
Trigger Your background Task from code behind.
Scenario 2> App Closed,Not Being Used
Run your background task!
So basically keep your backgroundTask simple(make it a class in whose run method you just call the proper App_Code Classes Method) and all calculations that you want to happen in the background keep them in App_Code. Also, if I am no wrong the minimum interval between which a background Task is triggered by itself cannot be set below 15 minutes.
For real-time you could look at SignalR ( can't help any further here)
could someone tell me why my screenshots are only black? I am still learning and couldnt find a clue why they are only black.
This is my Utility class
static class XNAUtilities
{
private static RenderTarget2D ssTexture;
private static KeyboardState currentState, previousState;
private static int counter;
public static void TakeScreenShot(GraphicsDevice device, Keys theKey)
{
// Take Screenshot
currentState = Keyboard.GetState();
if (currentState.IsKeyDown(theKey) && previousState.IsKeyUp(theKey))
{
//device.SetRenderTarget(null);
PresentationParameters pparameters = device.PresentationParameters;
ssTexture = new RenderTarget2D(device, pparameters.BackBufferWidth, pparameters.BackBufferHeight, false, SurfaceFormat.Color, DepthFormat.None); //??
FileStream fileStream = new System.IO.FileStream(#"Screenshot" + "_" + counter + ".png", System.IO.FileMode.CreateNew);
ssTexture.SaveAsPng(fileStream, pparameters.BackBufferWidth, pparameters.BackBufferHeight);
counter++;
}
previousState = currentState;
}
}
}
This is my Update and Draw from Game1.cs
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();
myModelRotation += MathHelper.ToRadians(1f);
// Take a Screenshot
XNAUtilities.TakeScreenShot(GraphicsDevice, Keys.F8);
base.Update(gameTime);
}
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);
Matrix[] transforms = new Matrix[myModel.Bones.Count];
myModel.CopyAbsoluteBoneTransformsTo(transforms);
foreach (ModelMesh mesh in myModel.Meshes)
{
foreach (BasicEffect effects in mesh.Effects)
{
effects.EnableDefaultLighting();
effects.World = transforms[mesh.ParentBone.Index]
* Matrix.CreateRotationY(myModelRotation)
* Matrix.CreateTranslation(myModelPosition);
effects.View = Matrix.CreateLookAt(new Vector3(200, 100, 400), Vector3.Zero, Vector3.Up);
effects.Projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45f),
GraphicsDevice.Viewport.AspectRatio, 1, 5000);
}
mesh.Draw();
}
smileySprite.DrawSprites(GraphicsDevice, spriteBatch, new Vector2(10,10), Color.White);
base.Draw(gameTime);
}
You're not actually rendering to your render target. So you're saving the blank target.
You need to wrap your scene drawing like so:
GraphicsDevice.SetRenderTarget(ssTexture);
// Render your scene here
GraphicsDevice.SetRenderTarget(null);
// Now you can save your render target as a texture