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2014/10/16 ¤W¤È 08:11:04
android Programming Glossary: canvas.drawpathAndroid - Crop an image from multipoints http://stackoverflow.com/questions/11579645/android-crop-an-image-from-multipoints new PorterDuffXfermode PorterDuff.Mode.CLEAR Draw the path canvas.drawPath path paint imageView.setImageBitmap croppedBitmap android android.. 0 path.lineTo 230 120 path.lineTo 70 120 path.lineTo 150 0 canvas.drawPath path paint paint.setXfermode new PorterDuffXfermode Mode.SRC_IN..
Android color picker to be included in the activity http://stackoverflow.com/questions/16363235/android-color-picker-to-be-included-in-the-activity canvas canvas.drawBitmap mBitmap 0 0 mBitmapPaint canvas.drawPath mPath mPaint canvas.drawPath circlePath circlePaint private.. mBitmap 0 0 mBitmapPaint canvas.drawPath mPath mPaint canvas.drawPath circlePath circlePaint private float mX mY private static final..
Change color without affecting anything previously drawn http://stackoverflow.com/questions/18521661/change-color-without-affecting-anything-previously-drawn 20 protected void onDraw Canvas canvas super.onDraw canvas canvas.drawPath path paint canvas.drawCircle x y 10 paint public boolean onTouchEvent.. path_clr path_color_list paint.setColor path_clr.second canvas.drawPath path_clr.first paint followed with the last drawPath that you..
How can I tell if a closed path contains a given point? http://stackoverflow.com/questions/2597590/how-can-i-tell-if-a-closed-path-contains-a-given-point i 24 use only alpha value for color 0xXX000000 canvas.drawPath paths.get i paint Then look up points int pathIndex lookup.getPixel..
Efficient Map Overlays in Android Google Map http://stackoverflow.com/questions/2848189/efficient-map-overlays-in-android-google-map gP2 p2 path.moveTo p2.x p2.y path.lineTo p1.x p1.y canvas.drawPath path mPaint courtesy Drawing a line path on Google Maps 2 Here's..
Android - drawing path as overlay on MapView http://stackoverflow.com/questions/3036139/android-drawing-path-as-overlay-on-mapview mPaint.setColor 0xFFFF0000 mPaint.setAntiAlias true canvas.drawPath p mPaint super.draw canvas mv shadow As you can see I make a..
How to draw a filled triangle in android canvas? http://stackoverflow.com/questions/3501126/how-to-draw-a-filled-triangle-in-android-canvas path.lineTo point1_returned.x point1_returned.y path.close canvas.drawPath path paint The pointX_returned are the coordinates which I'm..
http://stackoverflow.com/questions/6041190/cardio-graph-for-android 0 for int sec 1 sec 30 sec path.lineTo sec yourValueAt sec canvas.drawPath path paint You may also use quadTo or cubicTo instead of lineTo...
Android Gauge Animation Question http://stackoverflow.com/questions/6156674/android-gauge-animation-question
How do I draw an arrowhead (in Android)? http://stackoverflow.com/questions/6713757/how-do-i-draw-an-arrowhead-in-android 5 0 path.lineTo 5 0 path.close path.offset 10 40 canvas.drawPath path paint path.offset 50 100 canvas.drawPath path paint offset.. 10 40 canvas.drawPath path paint path.offset 50 100 canvas.drawPath path paint offset is cumlative next draw displaces 50 100 from..
Android How to draw a smooth line following your finger http://stackoverflow.com/questions/8287949/android-how-to-draw-a-smooth-line-following-your-finger point.x point.y else path.lineTo point.x point.y canvas.drawPath path paint make sure you change your paint from fill to stroke.. point.y next.x next.y else path.lineTo point.x point.y canvas.drawPath path paint This still results in some sharp edges. If you're.. prev.dy point.x point.dx point.y point.dy point.x point.y canvas.drawPath path paint Also I found that you needed to change the following..
http://stackoverflow.com/questions/9993030/bezier-curve-and-canvas
Android - Crop an image from multipoints http://stackoverflow.com/questions/11579645/android-crop-an-image-from-multipoints Paint with Xfermode Paint paint new Paint paint.setXfermode new PorterDuffXfermode PorterDuff.Mode.CLEAR Draw the path canvas.drawPath path paint imageView.setImageBitmap croppedBitmap android android layout android intent android emulator android widget.. paint.setAntiAlias true Path path new Path path.lineTo 150 0 path.lineTo 230 120 path.lineTo 70 120 path.lineTo 150 0 canvas.drawPath path paint paint.setXfermode new PorterDuffXfermode Mode.SRC_IN canvas.drawBitmap bitmap2 0 0 paint compositeImageView.setImageBitmap..
Android color picker to be included in the activity http://stackoverflow.com/questions/16363235/android-color-picker-to-be-included-in-the-activity mBitmap @Override protected void onDraw Canvas canvas super.onDraw canvas canvas.drawBitmap mBitmap 0 0 mBitmapPaint canvas.drawPath mPath mPaint canvas.drawPath circlePath circlePaint private float mX mY private static final float TOUCH_TOLERANCE 4 private.. void onDraw Canvas canvas super.onDraw canvas canvas.drawBitmap mBitmap 0 0 mBitmapPaint canvas.drawPath mPath mPaint canvas.drawPath circlePath circlePaint private float mX mY private static final float TOUCH_TOLERANCE 4 private void touch_start float..
Change color without affecting anything previously drawn http://stackoverflow.com/questions/18521661/change-color-without-affecting-anything-previously-drawn cWhite paint.setStyle Style.STROKE paint.setStrokeWidth 20 protected void onDraw Canvas canvas super.onDraw canvas canvas.drawPath path paint canvas.drawCircle x y 10 paint public boolean onTouchEvent MotionEvent event int action event.getAction switch..
How can I tell if a closed path contains a given point? http://stackoverflow.com/questions/2597590/how-can-i-tell-if-a-closed-path-contains-a-given-point Paint.Style.FILL for int i 0 i paths.size i paint.setColor i 24 use only alpha value for color 0xXX000000 canvas.drawPath paths.get i paint Then look up points int pathIndex lookup.getPixel x y pathIndex 24 Be sure to check for 255 no path if..
Efficient Map Overlays in Android Google Map http://stackoverflow.com/questions/2848189/efficient-map-overlays-in-android-google-map new Path Projection projection.toPixels gP1 p1 projection.toPixels gP2 p2 path.moveTo p2.x p2.y path.lineTo p1.x p1.y canvas.drawPath path mPaint courtesy Drawing a line path on Google Maps 2 Here's what worked for me createMarkers for elem bigList GeoPoint..
Android - drawing path as overlay on MapView http://stackoverflow.com/questions/3036139/android-drawing-path-as-overlay-on-mapview to.x to.y Paint mPaint new Paint mPaint.setStyle Style.FILL mPaint.setColor 0xFFFF0000 mPaint.setAntiAlias true canvas.drawPath p mPaint super.draw canvas mv shadow As you can see I make a list of points on a map and I want them to form a polygonal..
How to draw a filled triangle in android canvas? http://stackoverflow.com/questions/3501126/how-to-draw-a-filled-triangle-in-android-canvas path.moveTo point3_returned.x point3_returned.y path.lineTo point1_returned.x point1_returned.y path.close canvas.drawPath path paint The pointX_returned are the coordinates which I'm getting from the fields. They are basically latitudes and longitudes...
http://stackoverflow.com/questions/6041190/cardio-graph-for-android Color.WHITE Path path new Path path.moveTo 0 yourValueAt 0 for int sec 1 sec 30 sec path.lineTo sec yourValueAt sec canvas.drawPath path paint You may also use quadTo or cubicTo instead of lineTo. If you want your graph to have a realtime animation effect..
Android Gauge Animation Question http://stackoverflow.com/questions/6156674/android-gauge-animation-question
How do I draw an arrowhead (in Android)? http://stackoverflow.com/questions/6713757/how-do-i-draw-an-arrowhead-in-android Color.RED Path path new Path path.moveTo 0 10 path.lineTo 5 0 path.lineTo 5 0 path.close path.offset 10 40 canvas.drawPath path paint path.offset 50 100 canvas.drawPath path paint offset is cumlative next draw displaces 50 100 from previous path.offset.. 0 10 path.lineTo 5 0 path.lineTo 5 0 path.close path.offset 10 40 canvas.drawPath path paint path.offset 50 100 canvas.drawPath path paint offset is cumlative next draw displaces 50 100 from previous path.offset 50 100 canvas.drawPath path paint ..
Android How to draw a smooth line following your finger http://stackoverflow.com/questions/8287949/android-how-to-draw-a-smooth-line-following-your-finger first true for Point point points if first first false path.moveTo point.x point.y else path.lineTo point.x point.y canvas.drawPath path paint make sure you change your paint from fill to stroke paint new Paint Paint.ANTI_ALIAS_FLAG paint.setStyle Paint.Style.STROKE.. i points.size 1 Point next points.get i 1 path.quadTo point.x point.y next.x next.y else path.lineTo point.x point.y canvas.drawPath path paint This still results in some sharp edges. If you're really ambitious you can start to calculate the cubic splines.. prev points.get i 1 path.cubicTo prev.x prev.dx prev.y prev.dy point.x point.dx point.y point.dy point.x point.y canvas.drawPath path paint Also I found that you needed to change the following to avoid duplicate motion events public boolean onTouch..
http://stackoverflow.com/questions/9993030/bezier-curve-and-canvas
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