android-canvas

I'm trying to implement a thread with some simple Android animation. I'm just getting an error with sleep() - It says I need a method for it. I know there is probably an obvious solution. My app just places a ball that moves in a circle at a random location. What I want is to continue placing shapes at random locations. Anyway, can someone please tell what I'm doing wrong with my thread? Thanks. public class DrawingTheBall extends View { Bitmap bball; Random randX, randY; double theta; Handler m_handler; Runnable m_handlerTask; //for some reason I get a syntax error here m_handler = new

I am having trouble finding an answer to this. Consider the clipping code below: boolean is_ok = mycanvas.clipRect(clip_left, clip_top, clip_right+1, clip_bottom+1); mycanvas.getClipBounds(clipRect); if (!is_ok || clipRect.left != clip_left || clipRect.top != clip_top || clipRect.right != clip_right+1 || clipRect.bottom != clip_bottom+1) { Log.i("DEBUG", "setClipping failed"); } When the clip bounds are returned they don't match what was just set. For example if clip_left, clip_top, clip_right, clip_bottom are (100,50,109, 59) then I would expect the clipping bounds to be (100, 50, 110, 60)

I have got two bitmaps, background and foreground . How do I draw bitmap foreground on background without using another Canvas? Solution: 1) First create bitmaps from resources with additional option ARGB_8888 BitmapFactory.Options options = new BitmapFactory.Options(); options.inPreferredConfig = Bitmap.Config.ARGB_8888; 2) Declare bitmaps Bitmap background = BitmapFactory.decodeResource(getResources(), R.drawable.background, options); Bitmap foreground = BitmapFactory.decodeResource(getResources(), R.drawable.foreground, options); 3) Inside onDraw() function draw graphics protected void

I created a Custom View CircleView like this: public class CircleView extends LinearLayout { Paint paint1; public CircleView(Context context) { super(context); init(); } public CircleView(Context context, AttributeSet attrs) { super(context, attrs); init(); } public void init() { paint1 = new Paint(); paint1.setColor(Color.RED); } protected void onDraw(Canvas canvas) { //super.onDraw(canvas); canvas.drawCircle(50, 50, 25, paint1); this.draw(canvas); } } Then I included it on my Activity's layout root <RelativeLayout> : <com.turkidroid.test.CircleView android:id="@+id/circle_view" android

I am able to get the screen size in the normal activity but I need to get the screen size in a canvas view & manipulate in accordance with it.Any snippet on it will be helpful.Thanks. i got widthPixels heightPixels use ing this. DisplayMetrics metrics = getBaseContext().getResources().getDisplayMetrics(); int w = metrics.widthPixels; int h = metrics.heightPixels; 来源： https://stackoverflow.com/questions/9124797/how-to-get-the-size-of-the-screen-size-in-a-canvas-in-android

i have been trying to make such a demo where i need to draw many(hundreds of) circle shapes on canvas (or any other way if possible) , after drawing the canvas i need to zoom and move it .. and also want to capture the click(touch) event of each shape separately .. so i know i can get canvas touch event and get x and y positions and check which which circle is touched but i have to draw many circles and as well after zooming and moving the circle's x and y pos is changes so plz help me.. Give me any suggestion how to do this..the way to go.. or if any ANDROID MASTER have done some thing like