Re: [android-developers] Re: Draw bitmaps one after other using canvas
A pause isn't enough. All drawing is double-buffered. You will never see what you have drawn until the entire drawing is complete. If the code is in the view hierarchy, this means nothing is drawn until everything returns from its onDraw() call. To do sequential frames, after the first one you need to call invalidate() to schedule the draw of the next one and then wait for the following onDraw() to call that next frame. Of course, you don't want to just call invalidate() inside of onDraw() or else your app will set there continually drawing as fast it can and draining the battery. This is why you typically use Handler.postDelayed() or sendDelayed() to schedule the invalidate() calls at the rate you want to animate. On Fri, Jan 28, 2011 at 2:44 PM, Kumar Bibek coomar@gmail.com wrote: Run a thread. Put a sleep and then change your Bitmap when the thread wakes up. Loop it 3 times. :) Kumar Bibek http://techdroid.kbeanie.com http://www.kbeanie.com On Sat, Jan 29, 2011 at 4:13 AM, android777 anilreddy...@gmail.comwrote: Sorry to ask such a silly question, but How can I put pause? Is it in canvas class or a sleep? On Jan 28, 4:36 pm, Tommy droi...@gmail.com wrote: The drawing is probably happening to fast for you to notice. Put a pause in there for like ½ a second (500 ms) From: android-developers@googlegroups.com [mailto:android-developers@googlegroups.com] On Behalf Of Kumar Bibek Sent: Friday, January 28, 2011 5:32 PM To: android-developers@googlegroups.com Subject: Re: [android-developers] Draw bitmaps one after other using canvas What are you trying to achieve? If you want a pause between the switch, you have to set it in your code, else, you wouldn't notice the transition. Kumar Bibekhttp://techdroid.kbeanie.comhttp://www.kbeanie.com On Sat, Jan 29, 2011 at 3:55 AM, android777 anilreddy...@gmail.com wrote: How can I draw bitmaps one after other. I was trying to draw three bitmaps as follows. Bitmap flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers1); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers2); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers3); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); But it draws only the last image. What is the problem? How can I solve it? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com mailto:android-developers%2bunsubscr...@googlegroups.comandroid-developers%252bunsubscr...@googlegroups.com For more options, visit this group athttp:// groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group athttp:// groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to
[android-developers] Re: Draw bitmaps one after other using canvas
Sorry to ask such a silly question, but How can I put pause? Is it in canvas class or a sleep? On Jan 28, 4:36 pm, Tommy droi...@gmail.com wrote: The drawing is probably happening to fast for you to notice. Put a pause in there for like ½ a second (500 ms) From: android-developers@googlegroups.com [mailto:android-developers@googlegroups.com] On Behalf Of Kumar Bibek Sent: Friday, January 28, 2011 5:32 PM To: android-developers@googlegroups.com Subject: Re: [android-developers] Draw bitmaps one after other using canvas What are you trying to achieve? If you want a pause between the switch, you have to set it in your code, else, you wouldn't notice the transition. Kumar Bibekhttp://techdroid.kbeanie.comhttp://www.kbeanie.com On Sat, Jan 29, 2011 at 3:55 AM, android777 anilreddy...@gmail.com wrote: How can I draw bitmaps one after other. I was trying to draw three bitmaps as follows. Bitmap flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers1); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers2); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers3); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); But it draws only the last image. What is the problem? How can I solve it? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com mailto:android-developers%2bunsubscr...@googlegroups.com For more options, visit this group athttp://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group athttp://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Draw bitmaps one after other using canvas
Run a thread. Put a sleep and then change your Bitmap when the thread wakes up. Loop it 3 times. :) Kumar Bibek http://techdroid.kbeanie.com http://www.kbeanie.com On Sat, Jan 29, 2011 at 4:13 AM, android777 anilreddy...@gmail.com wrote: Sorry to ask such a silly question, but How can I put pause? Is it in canvas class or a sleep? On Jan 28, 4:36 pm, Tommy droi...@gmail.com wrote: The drawing is probably happening to fast for you to notice. Put a pause in there for like ½ a second (500 ms) From: android-developers@googlegroups.com [mailto:android-developers@googlegroups.com] On Behalf Of Kumar Bibek Sent: Friday, January 28, 2011 5:32 PM To: android-developers@googlegroups.com Subject: Re: [android-developers] Draw bitmaps one after other using canvas What are you trying to achieve? If you want a pause between the switch, you have to set it in your code, else, you wouldn't notice the transition. Kumar Bibekhttp://techdroid.kbeanie.comhttp://www.kbeanie.com On Sat, Jan 29, 2011 at 3:55 AM, android777 anilreddy...@gmail.com wrote: How can I draw bitmaps one after other. I was trying to draw three bitmaps as follows. Bitmap flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers1); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers2); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers3); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); But it draws only the last image. What is the problem? How can I solve it? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com mailto:android-developers%2bunsubscr...@googlegroups.comandroid-developers%252bunsubscr...@googlegroups.com For more options, visit this group athttp:// groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group athttp:// groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Draw bitmaps one after other using canvas
You probably meant a Handler and postDelayed with a Runnable? -- Kostya Vasilyev -- http://kmansoft.wordpress.com 29.01.2011 1:45 пользователь Kumar Bibek coomar@gmail.com написал: Run a thread. Put a sleep and then change your Bitmap when the thread wakes up. Loop it 3 times. :) Kumar Bibek http://techdroid.kbeanie.com http://www.kbeanie.com On Sat, Jan 29, 2011 at 4:13 AM, android777 anilreddy...@gmail.com wrote: Sorry to ask such a silly question, but How can I put pause? Is it in canvas class or a sleep? On Jan 28, 4:36 pm, Tommy droi...@gmail.com wrote: The drawing is probably happening to fast for you to notice. Put a pause in there for like 1/2 a second (500 ms) From: android-developers@googlegroups.com [mailto:android-developers@googlegroups.com] On Behalf Of Kumar Bibek Sent: Friday, January 28, 2011 5:32 PM To: android-developers@googlegroups.com Subject: Re: [android-developers] Draw bitmaps one after other using canvas What are you trying to achieve? If you want a pause between the switch, you have to set it in your code, else, you wouldn't notice the transition. Kumar Bibekhttp://techdroid.kbeanie.comhttp://www.kbeanie.com On Sat, Jan 29, 2011 at 3:55 AM, android777 anilreddy...@gmail.com wrote: How can I draw bitmaps one after other. I was trying to draw three bitmaps as follows. Bitmap flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers1); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers2); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); flower = BitmapFactory.decodeResource(getResources(),R.drawable.flowers3); canvas.drawColor(Color.BLACK); canvas.drawBitmap(kangoo, 0, 0, null); But it draws only the last image. What is the problem? How can I solve it? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com android-developers%2bunsubscr...@googlegroups.comandroid-developers%252bunsubscr...@googlegroups.com mailto:android-developers%2bunsubscr...@googlegroups.comandroid-developers%252bunsubscr...@googlegroups.com android-developers%252bunsubscr...@googlegroups.comandroid-developers%25252bunsubscr...@googlegroups.com For more options, visit this group athttp:// groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com android-developers%2bunsubscr...@googlegroups.comandroid-developers%252bunsubscr...@googlegroups.com For more options, visit this group athttp:// groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com android-developers%2bunsubscr...@googlegroups.comandroid-developers%252bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
