Android :: Stuck In OnTouchEvent & OnClikc Method
Mar 26, 2010
I am stuck in a situation,where I have onClick() method & onTouchEvent method. The situation is the my onTouchEvent is handling the fling gestures (like left,right), after each fling i am changing the Layout & presenting new one for the user. On each layout i have some buttons & they have the onClick() set. Now when i do the gesture nothing happens & sometimes the onClick gets called. how i can make these two methods to work correctly?
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Oct 20, 2010
I need to specify the full button images for both the up and down positions. My impression is that the most probable choice is to use an custom button based on the ImageView and specify the image for up and down positions. I am using the OnTouchEvent method to capture the ACTION_DOWN, but I'm not getting the ACTION_UP event.
Is there a better choice for creating a button that controls the full button image, catches the Down/Up and can subdivide the down time into time slices? If not, how do I catch the up event.
My application expects a screen touch on the "button" and not a keyboard action.
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Jan 12, 2010
I've been pulling my hair out trying to achieve smooth scrolling in an OpenGL-based app on Eclair. It seems that no matter what I do, I cannot get more than 36 events per second (the rest is sent in history data which is useless in my case). This happens on both the emulator and the Motorola Milestone.Is this a hardcoded limit or am I doing something wrong? I'm implementing onTouchEvent on the activity and recording how many events are received per second and then send that info through Log.v to Eclipse. I also tried implementing onTouchEvent on the view instead of the activity and the results are the same.
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Jan 26, 2010
I want to catch any onTouchEvent() on the mapview. After search lots of questions&answers, I found only when I write my own MapView(MyMapView)and define onTouchEvent, then use this MyMapView in main activity.
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Aug 5, 2010
I am making an user interface and i want to drag any one of them.how can i with ontouchevent.
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Apr 27, 2009
I've got a problem with a flood of touch events destroying my game's framerate while there is a touch active. Basically onTouchEvent is called (with getAction = ACTION_MOVE, x = 0 and y = 0) about a hundred times a second for as long as the finger is touching the screen. I've tried returning from onTouchEvent straight away, and even removing its implementation at all, but it doesn't help - the app slows to a crawl as soon as a finger is down. I asked on the IRC channel and Romain Guy advised me that they're aware of the problem but didn't have time to fix it for Cupcake, so I'm not expecting a full solution!
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Dec 16, 2009
I have several complaints from Moto DROID users who experience lags while touching. In my app I implement the recommended workaround with two threads and Thread.Sleep( 35 ) . It worked and works perfectly on my G1 and on some other Google devices. But for DROID I hear many complaints. As I don't have a DROID, could someone please tell me if there is still a need for this workaround? Or shall I have to do anything else?
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Jul 7, 2009
i need left, right motion event and a click event . problem is that, if i have onclickEvent then onTouchEvent doesn't fire. onTouchEvent works only if i disable onclickEvent and also it doesn't work what i expect.
1-only ACTION_MOVE fires twice everytime when i move on screen.
2-can't get left and right motion.
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Jul 27, 2010
I've got an onTouchEvent boolean on a Surfaceview, I've got openGL objects drawn on the view and I'm wondering is there anyway to detect where on the screen the onTouch happened? e.g (x,y) co-ordinates.
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Nov 13, 2010
I'm making an application which will utilize both touchevents and sensorevents. The problem with touchevents is that they fire off very often, and thereby consumes massive amounts of CPU time. The common solution is to do a Thread.sleep to make it cool down.However, if one wants to use both the onTouchEvent and onSensorChanged in the same activity, applying the Thread.sleep hack will also slow down onSensorChanged. This is obviously caused by the two methods being called from the same (ui) thread.Is there some way to call onTouchEvent from a different thread than the ui, so one could do the Thread.sleep trick without slowing down onSensorChanged as well?
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Nov 19, 2010
I'm adding 5 ImageView to an linear layout at runtime, so far so good, but what i would like to do is, when the user slide his finger over one of them, i would like to change the image, so my question would be, how can i know what's the current imageview under the user finger.?
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Oct 15, 2010
How can I drag a marker on the map?
How to handle it in onTouchEvent()?
I had written one code that actually drags. But it feels like the map is moving instead of the marker. That code is...
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Feb 3, 2009
Does anybody have any idea why I get often(but not always) error during the on touch event? Handling touch events is freezed for few seconds(this appears only immediately after application start). Then Error screen appears (choose wait of close). When I choose wait after few seconds screen is starting to process events. I'm using surfaceView with thread for painting. In logcat I get something like : "No window to dispatch pointer action 1".
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Dec 29, 2009
what is best way to create app in which I only need to draw simple lines through onTouchEvent? When i use invalidate everytime i draw any line, that erase lines i draw before. But if I use some List structure to store drawed lines it lose performance. Is there any simple way to do it?
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Jan 12, 2010
I'm trying to do something in my app where you have to hold your finger on the screen for more than 30 seconds. After about 30 seconds, it stops sending onTouchEvents for that part of the screen, almost like a "dead zone." Tested on a motorola droid, and is there any way to stop this from happening?
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Sep 7, 2010
I'm trying to override the onBackPressed() method of the ActivityGroup class:
public class MyClass extends ActivityGroup {
@Override
public void onBackPressed() {
// do something
return;
}
but I'm getting the error The method onBackPressed() of type MyClass must override a superclass method. I'm relatively new to Java, I've seen here that people do it and it works for them Why I'm getting this error? I'm writing an app for android 1.5, could the problem be here?
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Nov 22, 2010
In Eclipse, when I mouse hover over a built-in method, it displays a method definition including stuff like what the method does, input objects, return objects etc. If I have a yellow line (warning) under the method I'm trying to use, I can't get the mouse-over to show the definition. If I try hitting F3, I get a "The Jar of this class file belongs to container "Android 1.6" How do I show the definition of the method I am using when there is a warning?
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May 12, 2010
I am trying to use annotation - method.getAnnotation( ) or method.isAnnotationPresent( ) and it is not working. I am using eclipse emulator for 2.1 OS version with JDK 1.6. Following is information about what I did..................
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Oct 2, 2010
To provide feedback from the user for game I'm writing.This event fires off some game control events that take some time to complete (because there is animation involved).The problem I'm having is during the animation if I keep touching the screen (AKA firing this event),Basically while the animation is running, I do not need this event, although it would be nice to queue it.What can I do to prevent the timeout and either queue the event, or temporarily disable it?
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Jun 6, 2010
I have a weird bug in my piano app. Sometimes keys (and thus notes) hang. I did a lot of debugging and narrowed it down to what looks like androids inaccuracy of motion event handling.Clearly it can be seen here that out of nowhere I suddenly have an ACTION_UP for another note. Shouldn't I definitely get a ACTION_MOVE first? As shown in the end of the log, it's definitely not an error in region detection, since the ACTION_UP event is clearly in the B4 region. Every onTouchEvent call is logged, so the log is accurate.
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Apr 9, 2010
I've implemented a Class that extends Overlay and also override the onTap / onTouchEvent (tried both). Right now it seems like that event is triggered when you tap on the map regardless of position.How can I make sure that the event is triggered only when you tap over the overlay you have added?
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Nov 1, 2010
I created a method called insertTable in a class called Table but i can't use it in my onClick method in the main class :
CODE:.......
I want to do a income.insertTable in the onClick method but eclipse say that i need to create a local variable.
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Jun 6, 2010
Basically I'm calling the onDraw method like so...
code:...................
You see I'm drawing it on top of a Camera view and the information being drawn is subject to change. I have a listener setup which will update the variables being drawn at the appropriate time but I now want to "refresh" this draw in that listener.
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Feb 27, 2010
I have two android projects, ProjA requires ProjB (in Eclipse Properties > Java Build Path > Projects > Add > ProjB). Every thing compiles ok in Eclipse, but when I run ProjA I get an error: Could not find method XXX, referenced from method YYY. Where XXX - is the method from ProjB. How can I fix the settings?
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Aug 28, 2010
the title say it all. I wanna know a corresponding method in Android/Java that is like the GetTickCount method in C#/C++?
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Sep 15, 2010
Why should a static method in java accept only final or non final variables within its method, but not static?
For example I have the following method:
CODE:.................
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Nov 12, 2010
What is the point of setters and getters in java? I have a question about set method. Please provide some details if possible.I want to know why do we use set method with class name.Is it just setting the sec variable value ? if yes why there is class name with set?
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Oct 11, 2009
Is there any method to get one view by name rather than it's ID? Because we are composing a common lib, and it's not able for us to know the Resource ID at this time. So is there any method to get one view by name, not by findViewById?
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Mar 29, 2010
Can anyone tell me how to use emulateShiftHeld () method of WebView class.
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Jan 25, 2010
After that I make update-api, then make successfully.the problem is when I develop in eclipse, the eclipse won't recognize the new getBitmap method and won't get apk build.Is there anything else I should do to let eclipse work with the new method?
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