Android :: How To Speed Up Animation?
Jul 21, 2009
I have a static background image, and a foreground that needs to be animated. I tried a couple different approaches but the animation seemed choppy. One thing I did was having 2 different views, constantly calling invalidate() on the foreground view. Another was to have only 1 surfaceview, redrawing the background image and the foreground on each step of the animation.
While a surfaceview offers an optimal way to do heavy-duty animation, having to redraw the background every time kills the performance. Neither produced a smooth animation. What is the best way to perform this kind of animation - static background and animated foreground?
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Jun 4, 2010
My app has a small web view that I want to animate into place once the page has finished loading. My code...
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Aug 26, 2009
I am creating an app that show some histograms off your traveling speed in different time periods (histogram for the last minute, histogram for the last 2 minutes etc.) I would like to have an animation, and have discovered that drawing everything takes around 300-400ms. Which is to long for making my animation smooth, the animation itself is quite simple (2 lines and 2 dots). What I draw every frame right now is 20 antialised strings, size 14, in average ~5chars 8 of these strings will change every second. 1 of the string will change with the animation (this will become 5 strings if there is time).
The main part of the screen, the one showing the histogram data, consist of a lots of squares which needs to be updated every second. (450 squares). The presentation is split into 5 frames in the same view (has to be same view as arrows in one frame might point into another frame). Invalidating only a part off the screen makes almost no difference (it does becomes a bit faster, but i still execute all my drawing stuff). I have tried to add a flag whether or not the main part is dirty, but if I don't draw it, it is cleared. I might be missing something here. One possibility could be to render all the mostly static stuff to a bitmap, and then simply draw the bitmap. That would mean 10 strings only had to rendered on orientation change.
I think it would make sense since the slowest routine is the one drawing all the text. (the following is a typical timing for the drawing routines, accumulated).
V/HMMULTIBAR( 352): 0 - Drawing time: 0 ms V/HMMULTIBAR( 352): 1 - Drawing time: 53 ms V/HMMULTIBAR( 352): 2 - Drawing time: 62 ms V/HMMULTIBAR( 352): 3 - Drawing time: 85 ms V/HMMULTIBAR( 352): 4 - Drawing time: 280 ms V/HMMULTIBAR( 352): 5 - Drawing time: 303 ms
I would really appreciate comments about whether or not offscreen rendering is the way to go, or if there is a simpler way.
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Apr 6, 2012
I have working CRT TV off animation on my HTC magic. But it's working sloow. How to speed up this? Where in services.jar is file with animation runtime value for this animation?
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Mar 1, 2012
i have a list sprites in drawable folder. One xml file with:
PHP Code:
<?xml version="1.0" encoding="utf-8"?><animation-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:drawable="@drawable/fire_00000" android:duration="400" /> <item android:drawable="@drawable/fire_00001" android:duration="400" /> <item android:drawable="@drawable/fire_00002" android:duration="400" /> <item android:drawable="@drawable/fire_00003" android:duration="400" /> <item android:drawable="@drawable/fire_00004" android:duration="400" /></animation-list>
i used AnimationDrawable to run sprites on ImageView, now. i want to set duration properties by hand, if i have a seekbar to change this. How can i do that?
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Oct 16, 2010
I have a custom boot animation on my phone that I downloaded and it works but I would like to show it down a little bit. It runs through the animation really fast. If it was a little short it would be great. If I go into the boot animation.zip there are two files. One is a file that just has a few numbers in it the other is a bunch of pictures. Does that number file determine the speed it displays those pictures?
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Nov 17, 2010
I'm fading out an imageview with alpha animation. I'd like the image to stay transparent after the animation. Tried with different combinations of fillAfter and fillEnabled, no luck. How can this be achieved?
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Aug 30, 2010
I have a strange issue - from time to time the animation that should fade out my control (ImageButton) does not kick in immediately. I am using the fadeout animation to hide it and then in myListener on its end (onAnimationEnd) I put new resource as the image on the button.
Somewhere in my app code:
Animation a = AnimationUtils.loadAnimation(this,R.anim.fadeout); a.setAnimationListener(new myListener(location)); buttons[location].setAnimation(a); a.startNow(); // regardless if its start() or startnNow() it will work in most of the cases but not 100% reliable I actually can see in debug Log when its late, happens after few more clicks
Then in myListener.onAnimationEnd(Animation a):buttons[location].setImageResource(R.drawable.standard_button);
Seems there is a rule that the every 4th or 5th animation does not start ...
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Jul 29, 2010
Is it possible in Android to get a callback when a Frame Animation (AnimationDrawable) has completed playing its frame sequence? I know when a Tween Animation has completed, it calls onAnimationEnd(), but is there something similar for frame by frame animations?
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Jun 5, 2010
Is there a way of getting the speed at which the device is running?
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Oct 6, 2010
Maybe I missed it, but when I am using the google maps app, I don't see any indication of the speed I'm making over the ground. Am I just missing this or, if not, is there a GPS app that shows speed over the ground while using the GPS?
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Nov 27, 2009
I have a DROID eris HTC and there are only 9 speed dials. My antique LG would let me use any number for a speed dial even if it was two digits. It came in handy as each person was assigned his or her birthdate. Now with my high tech phone I only have 9? Please tell me there's a way. There must be seeing as 86 is speed dial.
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Sep 26, 2010
so I've been waiting for 4G in minnesota for a while now for my epic. They haven't announced it yet but. They've been. Tinkering with the towers lately and I've been seeing sme 4G coverage here are my mobile speed test results I was surprised considering I've been reading about people saying its more like 3 and a half G with speeds not much greater than 3G I realize however that right now there's almost 0 congestion and bandwith will slow considerably however the froyo update should even that out So what are your speeds?
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Aug 27, 2009
I have just started with development and would like to ask if Android's QEMU emulator uses any type of hardware acceleration.I made a simple Android program that extends the WebView activity and loads a webpage at start.That's all it does.It takes 35 seconds to cold start the emulator and acitivity from the Eclipse IDE. It takes 12 seconds to reload the acitivity when emulator is already up & running.Do you think these numbers are normal? Is there any possibility to speed up the emulation speed of QEMU?I can try to answer to this question myself. In the past, I used QEMU with KQEMU kernel module that remarkably boosted the emulation speed on X86 hardware. But Android runs on ARM CPU (not Intel or AMD CPU), so KQEMU module cannot be used here.My PC is Intel Core 2 Duo E6850 3.00GHz. 4GB RAM. Running Eclipse IDE 3.5 (Galileo) on 64 bit Ubuntu Linux 9.04.
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Jul 21, 2010
I have 40 MB file in server and i am downloading my file using
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
FileOutputStream f = new FileOutputStream(new File("trips.xml"));
InputStream in = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ( (len1 = in.read(buffer)) != -1 ) {
f.write(buffer,0, len1);
this code seems working fine but it is taking too long. is their any way I can make this process faster.
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Oct 13, 2009
Is there a way to determine connection speed? E.g. EDGE, 3G, etc.? I already know NetworkInfo.getType() will tell me Wifi or Mobile. I'm looking at Is this NetworkInfo.getSubtypeName(), but the function is undocumented.
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Mar 30, 2009
Currently, attempting to scroll when the text view has large amount of text makes the app completely unresponsive. It doesn't ANR, but it doesn't respond either. I've tried occasionally removing some text from the text view and removing some spans also, but it doesn't seem to help much. Any idea how to improve scrolling? It takes ages to scroll up or down. I also tried throttling touch events but it hasn't helped either.
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Apr 24, 2009
Get scroll speed of Listview, Ivan Soto Fernandez Web Developer
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Apr 20, 2010
Apparently auto focus in a phone camera isn't all it's hyped up to be. To get faster performance (the time from pressing the shutter button to the picture being taken is usually slowed down by the camera trying to find focus in autofocus mode (and sometimes missing completely and giving up if the subject is dark or lack contrast). I'm not sure about all Android phones, but my Acer Liquid has a focus setting either 'infinity' or 'auto'. From what what I understand about photography, on a small lens such as on a camera phone, the DOF (Depth of Field) is very large, and when the focus is set to the hyperfocal length (the 'infinity' setting), everything from infinity to about 2.5 ft is in focus. I confirmed this with my phone (set focus to infinity, see what the closest thing that's in focus). So what this really means is for almost all regular picture-taking, it should be set to 'infinity' for faster performance, and only set to 'auto' when one needs to take pictures of objects closer than about 2.5 ft, like a 'macro' mode. So it would've actually made more sense if Android Camera app were to label the two settings '0-2.5 ft auto focus' and 2.5-infinity fixed focus'. If your camera has this setting, give it a try and see if it's snappier.
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May 12, 2010
Is there an app that i can download that shows my processor speed? I have seen them on phones that have been rooted and overclocked, but never seen one for stock.I am on a Motorola Droid running stock 2.1-update 1. I dont want to hear "just root and overclock." If anyone knows of an app or tool that will show this.
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Sep 29, 2010
HTC G2 appearance wise look like the Nexus 2, but hardware it's a different beast. i just saw this HSPA+ result from android central and i cant believe. T-mobile might have the worst coverage, but where i live, it's pretty damage good and comparable to Sprint 4G. But seeing this, it totally blew my mind away. Is it possible??
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Dec 15, 2009
Anyone know of an audio player that will speed up the playback? It would be nice if it could keep the pitch the same but sped up is the goal. I used TCPMP on the Treo. This is great for listening to podcasts in a fraction of the time. Depending on the original audio, I can generally make everything out up to +25%.
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May 23, 2010
Is there a way to simulate speed on Android emulator?
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Jan 5, 2010
i was disappointed that the boot speed of the android emulator was more slower than my peer. of course, the spec was identical, his os was Win7 but my os was XPSP2.how can it be possible?is there any one who knows the way boosts the speed of android emulator?
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Feb 22, 2010
The internet browser works very slowly inside the emulator for Android 2.1 AVD.I tried using -netfast switch also while launching the emulator, but it doesnt help much.The same websites when i open in my Browser from my desktop , it opens very fast, and the same website inside emulator opens very slowly. Also i get only 2 towers on the network strength indicator in my emulator.Is there any way to improve the network signal inside the emulator?I have also noticed that emulator would get the network only if i am connected to the internet, else it gives no signal I am trying to simulate a very simple sms message sending and receving between two instances of emulators opened on 2 AVD.The message sending is successful only if my internet connection is on before i launch the emulator, else it gives no Service and message is not sent.I have noticed that a DNS SERVER NOT FOUND warning comes if i try to launch the emulator with my internet connection switched off.
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Jul 15, 2009
Android SDK startup takes more than 2 minutes. is there a way to start the emulator faster with any special parameters.
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May 2, 2010
In the test project, I am importing the mockito library for standard POJO testing.However, when I import the library, the compilation time skyrockets from 1 second to about 30 seconds in eclipse. The cause seems to be that the whole library is converted each time. So basically, each time a make a modification that I want to test, I have to wait 30 seconds.
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Apr 5, 2010
I need fewer speeding tickets. I've tried voting in local elections but that doesn't seem to help. So I'm left to looking at applications that can help me keep my speed in check.
I really like this application for iPhone, but it doesn't seem to have an Android port. It seems to be exactly what I'm looking for. It has a database of speed limits and notifies you when your phone's GPS reports you have exceeded those limits. The database is user-updated so it should be fairly accurate and current. It also has a really classy GUI.
Is there anything currently in the Android market that can help me? I've tried Trapster, but it doesn't have the functions I'm looking for. It also was pretty annoying as it constantly went off for every potential copper hiding place.
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Nov 22, 2010
I am new to android programming. In my application, i want to implement automatic scrolling. So, i used scroller for this purpose.It is performing scrolling but not maintaining constant speed till the end of scrolling the text. Can anyone help me out of this problem.
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Apr 8, 2010
Imagine to have the device perpendicular to the table, in portrait. The Z axis is watching to you and the Y axis to the sky. I want to measure the device's movement speed when I rotate it on the X axis. How can i get it?
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