Android: Touch seriously slowing my application

Posted by Jason Rogers on Stack Overflow See other posts from Stack Overflow or by Jason Rogers
Published on 2010-12-03T04:26:59Z Indexed on 2011/01/08 4:53 UTC
Read the original article Hit count: 196

Filed under:

android

|

touch

Hi all,

I've been raking my brains on this one for a while.

when I'm running my application (opengl game) eveyrthing goes fine but when I touch the screen my application slows down quite seriously (not noticeable on powerful phones like the nexus one, but on the htc magic it gets quite annoying).

I did a trace and found out that the touch events seem to be handled in a different thread and even if it doesn't take so much processing time I think androids ability to switch between threads is not so good...

What is the best way to handle touch when speed is an issue ?

Currently I'm using : in the GLSurfaceView

@Override
 public boolean onTouchEvent(MotionEvent event) {
     GameHandler.onTouchEvent(event);
     return true;
 }

Any ideas are welcome

© Stack Overflow or respective owner

Related posts about android

Please verify my layout: bottom button keeps coming up over keyboard

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi everyone, I have a layout which does almost what I want. There's just one bug regarding the button at the bottom. I should stay at the bottom at all times. But whenever I bring up the soft-keyboard the button will be displayed above the keyboard. This is not what I want but it should become covered… >>> More
Android programming. Application stopped unexpectedly.

as seen on Stack Overflow - Search for 'Stack Overflow'
I've just created a prototype of interface for my android app and tried to run it. Unfortunately I get an error that my app has stopped unexpectedly (my reputation doesn't allow me to post images so follow my links): screenshot of error message This is layout mode of editing. Everything looks as… >>> More
Listview Row Overlap Problem

as seen on Stack Overflow - Search for 'Stack Overflow'
I just updated my app and I am getting some odd complaints from people who update it. I am only getting complaints from people with non-stock android phones (phones that manufacturers have modified...HTC phones, cliq, pulse, etc), other phones like the Droid, Nexus work fine. My app (Photo Frame Deluxe)… >>> More
Why are some of my view not aligned correctly at the bottom of my relative layout?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have problems getting some of my views aligned in a relative layout that I use inside a row of my listview. Here is a screenshot from the layout builder in Eclipse, this is what I think it should look like: The next image is from the emulator. Now the TestTestTest View is at the top and covers… >>> More
Android RatingBar weirdness: Whenever I add a RatingBar to my layout, a bunch of the generated tags,

as seen on Stack Overflow - Search for 'Stack Overflow'
Whenever I use a RatingBar view in my layout, I suddenly get all kinds of compile errors. I'm using Android 2.0, but I've also tried 2.0.1, and 2.1, without joy. I also get a message: Shader 'android.graphics.BitmapShader' is not supported in Layout Editor, and an odd warning which may or maynot be… >>> More

Related posts about touch

Implementing touch-based rotation in cocoa touch

as seen on Stack Overflow - Search for 'Stack Overflow'
I am wondering what is the best way to implement rotation-based dragging movements in my iPhone application. I have a UIView that I wish to rotate around its centre, when the users finger is touch the view and they move it. Think of it like a dial that needs to be adjusted with the finger. The… >>> More
Mouse to touch point driver, Emulate touch points with mice

as seen on Super User - Search for 'Super User'
Are there any drivers to convert mice to touch points for multi-touch applications on Windows 7? >>> More
Why does my performance increase when touching the screen?

as seen on Stack Overflow - Search for 'Stack Overflow'
For some reason my FPS jumps up considerably when I move my mouse around on the screen (on the emulator) while holding the left mouse button. Normally my game is very laggy, but if I touch the screen (and as long as I am moving the mouse around while touching) it goes perfectly smooth. I have tried… >>> More
A Gentle .NET touch to Unix Touch

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
A Gentle .NET touch to Unix Touch The Unix world has an elegant utility called 'touch' which would modify the timestamp of the file whose path is being passed an argument to it. Unfortunately, we don't have a quick and direct such tool in Windows domain. However, just a few lines of code in C# can… >>> More
How to future-proof my touch-enabled web application?

as seen on Programmers - Search for 'Programmers'
I recently went out and purchased a touch-screen monitor with the intention of learning how to program touch-enabled web applications. I had reviewed the MDN documentation about touch events, as well as the W3C specification. To get started, I wrote a very short test page with two event handlers:… >>> More