I'm using ink presenter to draw the strokes. But the problem is while drawing curved lines, its draws jagged lines.. Straight lines do not have a problem. This is how I have done.. I dont know where to make changes so as to make the lines smoother.
private void MyIP_MouseLeftButtonDown(object sender, MouseEventArgs e)
{
MyIP.CaptureMouse();
DrawingAttributes att = new DrawingAttributes();
att.Color = CB;
att.Width = StrokeWidth;
att.Height = StrokeWidth;
if (bErase == true)
{
StylusPointCollection ErasePointCollection = new StylusPointCollection();
ErasePointCollection.Add(e.StylusDevice.GetStylusPoints(MyIP));
lastPoint = ErasePointCollection[ErasePointCollection.Count - 1];
EraseStroke = new Stroke(ErasePointCollection);
EraseStroke.DrawingAttributes = att;
}
else
{
StylusPointCollection MyStylusPointCollection = new StylusPointCollection();
MyStylusPointCollection.Add(e.StylusDevice.GetStylusPoints(MyIP));
NewStroke = new Stroke(MyStylusPointCollection);
NewStroke.DrawingAttributes = att;
MyIP.Strokes.Add(NewStroke);
}
}
//StylusPoint objects are collected from the MouseEventArgs and added to MyStroke.
private void MyIP_MouseMove(object sender, MouseEventArgs e)
{
if (bErase == true)
{
//StylusPointCollection pointErasePoints = e.StylusDevice.GetStylusPoints(MyIP);
//EraseStroke.StylusPoints.Add(e.StylusDevice.GetStylusPoints(MyIP));
//pointErasePoints.Insert(0, lastPoint);
//StrokeCollection hitStrokes = MyIP.Strokes.HitTest(pointErasePoints);
//if (hitStrokes.Count > 0)
//{
// foreach (Stroke hitStroke in hitStrokes)
// {
// ////For each intersecting stroke, split the stroke into two while removing the intersecting points.
// ProcessPointErase(hitStroke, pointErasePoints);
// }
//}
//lastPoint = pointErasePoints[pointErasePoints.Count - 1];
//STROKEERASE METHOD
StylusPointCollection pointErasePoints = e.StylusDevice.GetStylusPoints(MyIP);
StrokeCollection hitStrokes = MyIP.Strokes.HitTest(pointErasePoints);
if (hitStrokes.Count > 0)
{
foreach (Stroke hitStroke in hitStrokes)
{
MyIP.Strokes.Remove(hitStroke);
undoStack.Push(hitStroke);
undoStateBufferStack.Push(true);
}
}
}
if (NewStroke != null)
NewStroke.StylusPoints.Add(e.StylusDevice.GetStylusPoints(MyIP));
}
//MyStroke is completed
private void MyIP_LostMouseCapture(object sender, MouseEventArgs e)
{
if (NewStroke != null)
{
undoStack.Push(NewStroke);
undoStateBufferStack.Push(false);
}
EraseStroke = null;
NewStroke = null;
}
//Set the Clip property of the inkpresenter so that the strokes
//are contained within the boundary of the inkpresenter
private void SetBoundary()
{
RectangleGeometry MyRectangleGeometry = new RectangleGeometry();
MyRectangleGeometry.Rect = new Rect(0, 0, MyIP.ActualWidth, MyIP.ActualHeight);
MyIP.Clip = MyRectangleGeometry;
}
You can find the sample source code describing ink presenter in this Download link
. Please find the download tag. Also it contains plenty other samples which helps you to learn windows phone deeper.
Related
I am using AS3, and i want to call function 'startMatchThree' which is in a MatchThree.as (external actionscript file) into the flahs main timeline actions.
here is my code:
package {
import flash.display.;
import flash.events.;
import flash.text.*;
import flash.utils.Timer;
public class MatchThree extends MovieClip {
// constants
static const numPieces:uint = 4;
static const spacing:Number = 45;
static const offsetX:Number = 30;
static const offsetY:Number = 50;
// game grid and mode
private var grid:Array;
private var gameSprite:Sprite;
private var firstPiece:Piece;
private var isDropping,isSwapping:Boolean;
private var gameScore:int;
// set up grid and start game
public function startMatchThree() {
// create grid array
grid = new Array();
for(var gridrows:int=0;gridrows<8;gridrows++) {
grid.push(new Array());
}
setUpGrid();
isDropping = false;
isSwapping = false;
gameScore = 0;
addEventListener(Event.ENTER_FRAME,movePieces);
}
public function setUpGrid() {
// loop until valid starting grid
while (true) {
// create sprite
gameSprite = new Sprite();
// add 64 random pieces
for(var col:int=0;col<8;col++) {
for(var row:int=0;row<8;row++) {
addPiece(col,row);
}
}
// try again if matches are present
if (lookForMatches().length != 0) continue;
// try again if no possible moves
if (lookForPossibles() == false) continue;
// no matches, but possibles exist: good board found
break;
}
// add sprite
addChild(gameSprite);
}
// create a random piece, add to sprite and grid
public function addPiece(col,row:int):Piece {
var newPiece:Piece = new Piece();
newPiece.x = col*spacing+offsetX;
newPiece.y = row*spacing+offsetY;
newPiece.col = col;
newPiece.row = row;
newPiece.type = Math.ceil(Math.random()*4);
newPiece.gotoAndStop(newPiece.type);
newPiece.select.visible = false;
gameSprite.addChild(newPiece);
grid[col][row] = newPiece;
newPiece.addEventListener(MouseEvent.CLICK,clickPiece);
return newPiece;
}
// player clicks on a piece
public function clickPiece(event:MouseEvent) {
var piece:Piece = Piece(event.currentTarget);
// first one selected
if (firstPiece == null) {
piece.select.visible = true;
firstPiece = piece;
// clicked on first piece again
} else if (firstPiece == piece) {
piece.select.visible = false;
firstPiece = null;
// clicked on second piece
} else {
firstPiece.select.visible = false;
// same row, one column over
if ((firstPiece.row == piece.row) && (Math.abs(firstPiece.col-piece.col) == 1)) {
makeSwap(firstPiece,piece);
firstPiece = null;
// same column, one row over
} else if ((firstPiece.col == piece.col) && (Math.abs(firstPiece.row-piece.row) == 1)) {
makeSwap(firstPiece,piece);
firstPiece = null;
// bad move, reassign first piece
} else {
firstPiece = piece;
firstPiece.select.visible = true;
}
}
}
// start animated swap of two pieces
public function makeSwap(piece1,piece2:Piece) {
swapPieces(piece1,piece2);
// check to see if move was fruitful
if (lookForMatches().length == 0) {
swapPieces(piece1,piece2);
} else {
isSwapping = true;
}
}
// swap two pieces
public function swapPieces(piece1,piece2:Piece) {
// swap row and col values
var tempCol:uint = piece1.col;
var tempRow:uint = piece1.row;
piece1.col = piece2.col;
piece1.row = piece2.row;
piece2.col = tempCol;
piece2.row = tempRow;
// swap grid positions
grid[piece1.col][piece1.row] = piece1;
grid[piece2.col][piece2.row] = piece2;
}
// if any pieces are out of place, move them a step closer to being in place
// happens when pieces are swapped, or they are dropping
public function movePieces(event:Event) {
var madeMove:Boolean = false;
for(var row:int=0;row<8;row++) {
for(var col:int=0;col<8;col++) {
if (grid[col][row] != null) {
// needs to move down
if (grid[col][row].y < grid[col][row].row*spacing+offsetY) {
grid[col][row].y += 5;
madeMove = true;
// needs to move up
} else if (grid[col][row].y > grid[col][row].row*spacing+offsetY) {
grid[col][row].y -= 5;
madeMove = true;
// needs to move right
} else if (grid[col][row].x < grid[col][row].col*spacing+offsetX) {
grid[col][row].x += 5;
madeMove = true;
// needs to move left
} else if (grid[col][row].x > grid[col][row].col*spacing+offsetX) {
grid[col][row].x -= 5;
madeMove = true;
}
}
}
}
// if all dropping is done
if (isDropping && !madeMove) {
isDropping = false;
findAndRemoveMatches();
// if all swapping is done
} else if (isSwapping && !madeMove) {
isSwapping = false;
findAndRemoveMatches();
}
}
// gets matches and removes them, applies points
public function findAndRemoveMatches() {
// get list of matches
var matches:Array = lookForMatches();
for(var i:int=0;i<matches.length;i++) {
var numPoints:Number = (matches[i].length-1)*50;
for(var j:int=0;j<matches[i].length;j++) {
if (gameSprite.contains(matches[i][j])) {
var pb = new PointBurst(this,numPoints,matches[i][j].x,matches[i][j].y);
addScore(numPoints);
gameSprite.removeChild(matches[i][j]);
grid[matches[i][j].col][matches[i][j].row] = null;
affectAbove(matches[i][j]);
}
}
}
// add any new piece to top of board
addNewPieces();
// no matches found, maybe the game is over?
if (matches.length == 0) {
if (!lookForPossibles()) {
endGame();
}
}
}
when I put 'startMatchThree' in the actions tab in timeline, it is showing this error message:
1180: Call to a possibly undefined method startMatchThree.
SO how to solve this error!!
Thank you for the help!! :)
startMatchThree() is a method of the MatchThree class, so you need a reference to an instance of MatchThree. Is there a symbol on the timeline somewhere which is linked to the MatchThree class? Then you can do something like this, where "matchThree" is the instance name of the symbol:
matchThree.startMatchThree();
Are you instantiating the MatchThree class in code? Then you just need to use that code reference, something like this,:
var matchThree:MatchThree = new MatchThree();
matchThree.startMatchThree();
I am new to actionscript and I am trying to make a "cheat" way of completing a sliding puzzle where when I click the [s] key it calls a solve puzzle function which makes a for loop put all the puzzle pieces in the correct location. This function must call a for loop, those were the instructions I was given. Could anyone help me understand the code that I need to make this happen. I have already made the function and it does properly call when I hit the s key but everything past that doesn't seem to make the code actually move the pieces. Thank you for any help I can get.
package {
import flash.display.*;
import flash.events.*;
import flash.net.URLRequest;
import flash.geom.*;
import flash.utils.Timer;
public class SlidingPuzzle extends MovieClip {
// space between pieces and offset
static const pieceSpace:Number = 2;
static const horizOffset:Number = 50;
static const vertOffset:Number = 50;
// number of pieces
static const numPiecesHoriz:int = 5;
static const numPiecesVert:int = 5;
// random shuffle steps
static const numShuffle:int = 200;
// animation steps and time
static const slideSteps:int = 10;
static const slideTime:int = 250;
// size of pieces
private var pieceWidth:Number;
private var pieceHeight:Number;
// game pieces
private var puzzleObjects:Array;
// tracking moves
private var blankPoint:Point;
private var slidingPiece:Object;
private var slideDirection:Point;
private var slideAnimation:Timer;
public function startSlidingPuzzle() {
// blank spot is the bottom right
blankPoint = new Point(numPiecesHoriz-1,numPiecesVert-1);
// load the bitmap
loadBitmap("oceanshore.jpg");
// event to complete the puzzle for you.
stage.addEventListener(KeyboardEvent.KEY_UP, solvePuzzle);
}
// get the bitmap from an external source
public function loadBitmap(bitmapFile:String) {
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadingDone);
var request:URLRequest = new URLRequest(bitmapFile);
loader.load(request);
}
// bitmap done loading, cut into pieces
public function loadingDone(event:Event):void {
// create new image to hold loaded bitmap
var image:Bitmap = Bitmap(event.target.loader.content);
pieceWidth = image.width/numPiecesHoriz;
pieceHeight = image.height/numPiecesVert;
// cut into puzzle pieces
makePuzzlePieces(image.bitmapData);
// shuffle them
shufflePuzzlePieces();
}
// cut bitmap into pieces
public function makePuzzlePieces(bitmapData:BitmapData) {
puzzleObjects = new Array();
for(var x:uint=0;x<numPiecesHoriz;x++) {
for (var y:uint=0;y<numPiecesVert;y++) {
// skip blank spot
if (blankPoint.equals(new Point(x,y))) continue;
// create new puzzle piece bitmap and sprite
var newPuzzlePieceBitmap:Bitmap = new Bitmap(new BitmapData(pieceWidth,pieceHeight));
newPuzzlePieceBitmap.bitmapData.copyPixels(bitmapData,new Rectangle(x*pieceWidth,y*pieceHeight,pieceWidth,pieceHeight),new Point(0,0));
var newPuzzlePiece:Sprite = new Sprite();
newPuzzlePiece.addChild(newPuzzlePieceBitmap);
addChild(newPuzzlePiece);
// set location
newPuzzlePiece.x = x*(pieceWidth+pieceSpace) + horizOffset;
newPuzzlePiece.y = y*(pieceHeight+pieceSpace) + vertOffset;
// create object to store in array
var newPuzzleObject:Object = new Object();
newPuzzleObject.currentLoc = new Point(x,y);
newPuzzleObject.homeLoc = new Point(newPuzzlePiece.x,newPuzzlePiece.y);
newPuzzleObject.piece = newPuzzlePiece;
newPuzzlePiece.addEventListener(MouseEvent.CLICK,clickPuzzlePiece);
puzzleObjects.push(newPuzzleObject);
}
}
}
//make the puzzle solve itself
public function solvePuzzle(evt:KeyboardEvent)
{
if (evt.keyCode == 83)
{
for(var i:int = 0; i<puzzleObjects.length; i++)
{
}
}
}
// make a number of random moves
public function shufflePuzzlePieces() {
for(var i:int=0;i<numShuffle;i++) {
shuffleRandom();
}
}
// random move
public function shuffleRandom() {
// loop to find valid moves
var validPuzzleObjects:Array = new Array();
for(var i:uint=0;i<puzzleObjects.length;i++) {
if (validMove(puzzleObjects[i]) != "none") {
validPuzzleObjects.push(puzzleObjects[i]);
}
}
// pick a random move
var pick:uint = Math.floor(Math.random()*validPuzzleObjects.length);
movePiece(validPuzzleObjects[pick],false);
}
public function validMove(puzzleObject:Object): String {
// is the blank spot above
if ((puzzleObject.currentLoc.x == blankPoint.x) &&
(puzzleObject.currentLoc.y == blankPoint.y+1)) {
return "up";
}
// is the blank spot below
if ((puzzleObject.currentLoc.x == blankPoint.x) &&
(puzzleObject.currentLoc.y == blankPoint.y-1)) {
return "down";
}
// is the blank to the left
if ((puzzleObject.currentLoc.y == blankPoint.y) &&
(puzzleObject.currentLoc.x == blankPoint.x+1)) {
return "left";
}
// is the blank to the right
if ((puzzleObject.currentLoc.y == blankPoint.y) &&
(puzzleObject.currentLoc.x == blankPoint.x-1)) {
return "right";
}
// no valid moves
return "none";
}
// puzzle piece clicked
public function clickPuzzlePiece(event:MouseEvent) {
// find piece clicked and move it
for(var i:int=0;i<puzzleObjects.length;i++) {
if (puzzleObjects[i].piece == event.currentTarget) {
movePiece(puzzleObjects[i],true);
break;
}
}
}
// move a piece into the blank space
public function movePiece(puzzleObject:Object, slideEffect:Boolean) {
// get direction of blank space
switch (validMove(puzzleObject)) {
case "up":
movePieceInDirection(puzzleObject,0,-1,slideEffect);
break;
case "down":
movePieceInDirection(puzzleObject,0,1,slideEffect);
break;
case "left":
movePieceInDirection(puzzleObject,-1,0,slideEffect);
break;
case "right":
movePieceInDirection(puzzleObject,1,0,slideEffect);
break;
}
}
// move the piece into the blank spot
public function movePieceInDirection(puzzleObject:Object, dx,dy:int, slideEffect:Boolean) {
puzzleObject.currentLoc.x += dx;
puzzleObject.currentLoc.y += dy;
blankPoint.x -= dx;
blankPoint.y -= dy;
// animate or not
if (slideEffect) {
// start animation
startSlide(puzzleObject,dx*(pieceWidth+pieceSpace),dy*(pieceHeight+pieceSpace));
} else {
// no animation, just move
puzzleObject.piece.x = puzzleObject.currentLoc.x*(pieceWidth+pieceSpace) + horizOffset;
puzzleObject.piece.y = puzzleObject.currentLoc.y*(pieceHeight+pieceSpace) + vertOffset;
}
}
// set up a slide
public function startSlide(puzzleObject:Object, dx, dy:Number) {
if (slideAnimation != null) slideDone(null);
slidingPiece = puzzleObject;
slideDirection = new Point(dx,dy);
slideAnimation = new Timer(slideTime/slideSteps,slideSteps);
slideAnimation.addEventListener(TimerEvent.TIMER,slidePiece);
slideAnimation.addEventListener(TimerEvent.TIMER_COMPLETE,slideDone);
slideAnimation.start();
}
// move one step in slide
public function slidePiece(event:Event) {
slidingPiece.piece.x += slideDirection.x/slideSteps;
slidingPiece.piece.y += slideDirection.y/slideSteps;
}
// complete slide
public function slideDone(event:Event) {
slidingPiece.piece.x = slidingPiece.currentLoc.x*(pieceWidth+pieceSpace) + horizOffset;
slidingPiece.piece.y = slidingPiece.currentLoc.y*(pieceHeight+pieceSpace) + vertOffset;
slideAnimation.stop();
slideAnimation = null;
// check to see if puzzle is complete now
if (puzzleComplete()) {
clearPuzzle();
gotoAndStop("gameover");
}
}
// check to see if all pieces are in place
public function puzzleComplete():Boolean {
for(var i:int=0;i<puzzleObjects.length;i++) {
if (!puzzleObjects[i].currentLoc.equals(puzzleObjects[i].homeLoc)) {
return false;
}
}
return true;
}
// remove all puzzle pieces
public function clearPuzzle() {
for (var i in puzzleObjects) {
puzzleObjects[i].piece.removeEventListener(MouseEvent.CLICK,clickPuzzlePiece);
removeChild(puzzleObjects[i].piece);
}
puzzleObjects = null;
}
}
First, program must know where to place the objects, for them to placed correctly. And best way to do it, is to record piece's initial positions.
Before you set piece's new location, create the Object and take it's initial location.
newPuzzleObject.initialLoc = new Point(newPuzzlePiece.x,newPuzzlePiece.y);
Object creation must come before this part, before piece's initial position changed;
// set location
newPuzzlePiece.x = x*(pieceWidth+pieceSpace) + horizOffset;
newPuzzlePiece.y = y*(pieceHeight+pieceSpace) + vertOffset;
And at the solvePuzzle, place them all back to their initial location.
for(i:uint; i < puzzleObjects.length; i++)
{
puzzleObjects[i].x = puzzleObjects[i].initialLoc.x;
puzzleObjects[i].y = puzzleObjects[i].initialLoc.y;
}
I need to change the background color several times during one event , currently I am doing this
LayoutRoot.Background = new SolidColorBrush( Colors.Cyan );
and its changing the color.
but I want it to be like this
LayoutRoot.Background = new SolidColorBrush( Colors.Cyan );
System.Threading.Thread.Sleep(2000);
LayoutRoot.Background = new SolidColorBrush( Colors.White );
but the problem that the 2nd piece of code changes directly to white , because the change occurs when the execution is done , I want it to be done while the code is executing , any ideas for that ?
int state;
// Constructor
public MainPage()
{
state = 0;
// create our dispatch timer
DispatcherTimer timer;
timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromMilliseconds(2000);
timer.Tick += OnTimerTick;
timer.Start();
// timer.Stop(); // call this to stop
}
// if the timer is on, cycle the color
private void OnTimerTick(object sender, EventArgs e)
{
try
{
if(state == 0){
LayoutRoot.Background = new SolidColorBrush( Colors.Cyan );
state = 1;
}
else
{
LayoutRoot.Background = new SolidColorBrush( Colors.White );
state = 0;
}
}
catch (Exception ex)
{
string error_message = ex.Message;
}
}
In my application I have a map for which the first thing I do (on launching) is to add a custom MapLayer (which I populate with many MapOverlays/pushpins).
When I browse to another page of the app and then return to the map page, everything (ie the MapLayer that was drawn on my map) is gone.
It takes time to add it all over again each time the user navigates to the map page so I would like it to be fixed, drawn/added just once.
Any suggestions?
edit, added the code [I removed some details, the structure remains the same]:
private async void drawStations()
{
SQLiteAsyncConnection conn = new SQLiteAsyncConnection("stasy.sqlite");
List<line1_stations> lines = await conn.QueryAsync<line1_stations>("select *...");
Microsoft.Phone.Maps.Controls.MapLayer layer = new Microsoft.Phone.Maps.Controls.MapLayer();
Pushpin p;
foreach (line1_stations a in lines)
{
double sLat = Convert.ToDouble(a.lat);
double sLon = Convert.ToDouble(a.lon);
p = new Pushpin();
p.Location = new GeoCoordinate(sLat, sLon);
p.Tap += img_Tap;
p.Content = "...";
p.Foreground = new SolidColorBrush(Colors.Transparent);
p.Width = 30;
p.Height = 30;
MapOverlay overlay1 = new MapOverlay();
overlay1.Content = p;
overlay1.GeoCoordinate = new GeoCoordinate(sLat, sLon);
overlay1.PositionOrigin = new Point(0.0, 1.0);
layer.Add(overlay1);
}
myMap.Layers.Add(layer);
}
You can try to create your MapLayer as a public property in App.xaml.cs and set it only when your app is running first time.
Then create an instance of app inside page with your map and add your MapLayer to your Map layers inside OnNavigatedTo event.
Define a flag in app level. here is the sample
// In App.xaml.cs
public static bool IsLaunched = false;
private void Application_Launching(object sender, LaunchingEventArgs e)
{
IsLaunched =true;
}
//In your map screen
protected override void OnNavigatedTo(NavigationEventArgs e)
{
if(App.IsLaunched)
{
drawStations();
//Set App flage to false
App.IsLaunched = false;
}
}
private async void drawStations()
{
SQLiteAsyncConnection conn = new SQLiteAsyncConnection("stasy.sqlite");
List<line1_stations> lines = await conn.QueryAsync<line1_stations>("select *...");
Microsoft.Phone.Maps.Controls.MapLayer layer = new Microsoft.Phone.Maps.Controls.MapLayer();
Pushpin p;
foreach (line1_stations a in lines)
{
double sLat = Convert.ToDouble(a.lat);
double sLon = Convert.ToDouble(a.lon);
p = new Pushpin();
p.Location = new GeoCoordinate(sLat, sLon);
p.Tap += img_Tap;
p.Content = "...";
p.Foreground = new SolidColorBrush(Colors.Transparent);
p.Width = 30;
p.Height = 30;
MapOverlay overlay1 = new MapOverlay();
overlay1.Content = p;
overlay1.GeoCoordinate = new GeoCoordinate(sLat, sLon);
overlay1.PositionOrigin = new Point(0.0, 1.0);
layer.Add(overlay1);
}
myMap.Layers.Add(layer);
}
I want to update my live tile by creating and saving a writable bitmap image in scheduled task agent.my code works inside the app but in background task, it breaks into the debugger
I'm using this simple code:
protected override void OnInvoke(ScheduledTask task)
{
#if DEBUG_AGENT
ScheduledActionService.LaunchForTest(task.Name, TimeSpan.FromSeconds(30));
#endif
CreateWideTile();
NotifyComplete();
}
and my code to create and save image is this:
private void CreateWideTile()
{
int width = 691;
int height = 336;
string imagename = "WideBackground";
WriteableBitmap b = new WriteableBitmap(width, height);
var canvas = new Grid();
canvas.Width = b.PixelWidth;
canvas.Height = b.PixelHeight;
var background = new Canvas();
background.Height = b.PixelHeight;
background.Width = b.PixelWidth;
//Created background color as Accent color
SolidColorBrush backColor = new SolidColorBrush(Colors.Red);
background.Background = backColor;
var textBlock = new TextBlock();
textBlock.Text = "Example text";
textBlock.FontWeight = FontWeights.Normal;
textBlock.TextAlignment = TextAlignment.Left;
textBlock.Margin = new Thickness(20, 20, 0, 0);
textBlock.TextWrapping = TextWrapping.Wrap;
textBlock.Foreground = new SolidColorBrush(Colors.White); //color of the text on the Tile
textBlock.FontSize = 30;
canvas.Children.Add(textBlock);
b.Render(background, null);
b.Render(canvas, null);
b.Invalidate(); //Draw bitmap
//Save bitmap as jpeg file in Isolated Storage
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream imageStream = new IsolatedStorageFileStream("/Shared/ShellContent/" + imagename + ".jpg", System.IO.FileMode.Create, isf))
{
b.SaveJpeg(imageStream, b.PixelWidth, b.PixelHeight, 0, 100);
}
}
}
when I test the app, after executing background task, an error comes that point to Debugger.Break();
private static void UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
{
if (Debugger.IsAttached)
{
// An unhandled exception has occurred; break into the debugger
Debugger.Break();
}
}
I don't understand the reason. my code works in foreground app but not in background ...
any solution ????
You should use dispatcher, because WriteableBitmap.Render should be used in the UI thread:
protected override void OnInvoke(ScheduledTask task)
{
Deployment.Current.Dispatcher.BeginInvoke( () =>
{
CreateWideTile();
NotifyComplete();
} );
}