Android :: Possible To Use OnKeyDown() For An ImageButton
Mar 28, 2010is it possible to use onKeyDown() for an ImageButton instead of onClick() to capture the user's click on this imagebutton?
View 3 Repliesis it possible to use onKeyDown() for an ImageButton instead of onClick() to capture the user's click on this imagebutton?
View 3 RepliesI've created a simple android game, based on the Lunar Lander sample, and I'm having a problem with handling key events.When the activity starts, the only keys that onKeyDown or onKeyUp get called for are the dpad up/down/left/right keys.Neither the menu, back, or dpad_center keys trigger onKey methods. However, once I've pushed one of the dpad up/down/left/right buttons, pressing the menu, back, or dpad_center keys do trigger these methods. I'm not getting any errors, or any indication of what's going wrong.It's possible that the focus is set wrong - the activity is started from a button on screen, so it could be in touchscreen mode. If that's the case, shouldn't touching the back button get me in to the right focus mode so that I can catch the event?I'm using the emulator from SDK-1.5r3.I have not been able to try this on a real phone yet.
View 4 Replies View RelatedI' d like to fire up onKeyDown() event from my source code (for example from Activity). I want it, because i'd like to create program for remote keyboard, which will be PC keyboard. PC will send to mobile throw Socket message and mobile will fire up event from message in socket. Message will contain pressed key on PC keyboard. In future i'd like to create service, which will be starting on device power on .
View 2 Replies View RelatedWhat I'm basically trying to achieve is custom global hot keys or in other words 'things will happen when I push certain buttons no matter which program is currently on top'.I assume a service is needed.I have a quick and dirty test that just tells me what has been pressed that will work if it is the active window.But obviously if I change window or go into a text box it doesn't work. If I stick it directly into a service (or an imputmethodservice) and launch said service nothing happens. (Some permissions required maybe?)Any suggestions where I'm going wrong?Or a better way of capturing which button is pressed?
View 1 Replies View RelatedI am trying to override the behavior of a TabActivity that has other Activities as children. I have made all of the children activities return false in onKeyDown so that the key will propagate through to the parent.However, this is not the case.The only key that is being recognized is the search key.Back, menu, and home are not being overridden.
View 6 Replies View RelatedI have a proble with onKeyDown: my activity consists in a simple textView (as header) and a ListView below it, I need to go back to the previous screen when the user presses the back button.Thus, I implemented the onKeyDown method. Everything works fine if the list contains some elements, but when the list is empty the onKeyDown method is never called.
View 3 Replies View RelatedIn the ListView, the space key is available as an onKeyUp event but not as an onKeyDown event.Is it possible to override the ListView's default response (i.e., page down) to the space key?The reason I ask is that my application's ListView scrolls to the text (including space characters) the user enters.Although I can implement my application's ListView scrolling based upon characters from onKeyUp(),that results in unwanted list jumping anytime the user types a space.
View 3 Replies View RelatedI have an activity which overrides the onKeyDown method. The documentation states the following about onKeyDown: "Called when a key was pressed down and not handled by any of the views inside of the activity." The problem I have is that this method is being called even when the views inside the activity handle it. I have a button implementing a longPress listener. What I see on debugger when long clicking on the button with the center key is that first onKeyDown from the activity is called then the longPress listener from the button gets triggered. Even for Textviews, when long clicking on it with the center select, the activity onKeyDown gets triggered before the TextView processes the longclick (and shows the Input Method context menu).
View 5 Replies View RelatedI am wondering if there is a way to override the onkeydown for an edittext view without making your own class? I just want my user to type something in and hit enter, i put up the flag so enter doesn't actually do anything now, but I want it to launch a function ive made.
View 3 Replies View RelatedHow can I have an imagebutton stay in the 'pressed' state when it is clicked? Basically I just want the background to be the depressed background, but I can't figure out how to set it. At the moment, I've just copied the selected button background into my res folder, but when I set it as the background, it becomes blurry (since the original image is bigger than the button itself).
Normal Background:
What I'm getting:
Also I don't believe I can actually use this method considering the many different UI layouts. The button should stay pressed as per the UI the user is using.
Wanted to leave a ImageButton is disabled (not clickable), but have used android: enabled = "false" but does not work
Does anyone know how to disable an ImageButton?
I'm using the following code, which I expect would scale the associated image to fit within the given dimensions of the button:
CODE:.....
The image is 64X64 and I was expecting to see 32X32 on the screen. However, the button draws with the original 64X64 size. I can re- sample the image down and create a new file but I'm curious why this approach didn't work.
I have problem with width of ImageButtons, it isn't the same size. I have experimented with all attributes for two hours and nothing. I create buttons at runtime and put inside row (also created at runtime).
CODE:..................
I have a button with two states(selected and unselected). the image of button is different for the states. Which one should I use? How do i set images and states?
View 1 Replies View RelatedIs it possible to add a click event to an ImageButton? In my code its not working
Here is my code:
CODE:..................
I'm having a problem when setting the visibility of two image buttons one on top of the other. The idea is to implement a play/pause control. The problem is that the only part where setting the visibility actually works is in the click listeners of the buttons. If I try to change it somewhere else nothing happens.
CODE:.......................
I'm trying to create a transparent (no button background) ImageButton that has a custom selector. I have the selector working against the button but I now want the selector drawables to cross-fade into each other.
I saw the TransitionDrawable object that can be represented in XML. Is there a way to connect this into my selector?
Below is the XML layout code to create the image button on the screen in the lower left corner of the screen. It currently goes from one image to the next abruptly ignoring the transition XML.
CODE:.....................
I have 1 imageButton and i want to hide that button after 5sec in oncreate method.
View 3 Replies View RelatedI put a background color in a ImageButton? How?
View 1 Replies View Relatedwhy is the transparency for drawables attached to ImageButtons not honoured? i have to change them to ImageViews so they look right.
View 5 Replies View RelatedIf I was using an ImageButton with a selector for its background, is there a state I can change which will make it change its appearance? Right now I can get it to change images when pressed, but there seems to be no "highlighted" or "selected" or similar state which lets me toggle it's appearance at will.
Here's my XML, it only changes appearance when pressed.
CODE:........................
When using the "selector" to specify different images for buttons for different states, such as pressed, focused etc, do I have to write an xml file for each button? I have about 15-20 buttons in my app, so was wondering if there is a way to write just one xml and refer to parts of it?
View 2 Replies View RelatedI want to setImageResource for an ImageButton programatically, based on a variable.
For eg: if size=5, I want to setImageResource to R.drawable.five if size=6, I want to setImageResource to R.drawable.six
Unfortunately, I have too many of these, so an if-else or switch gets tiring.
Is there a way to achieve something like: R.drawable.size?
Can I set an ImageButton's image from an http URL?
View 1 Replies View RelatedHow to resize the imageButton to fit the image exactly..This is the code that i tried, but the image is placed at the position that i am locating using android:scaleType but i can't able to reduce the size of imageButton.
The code that i tried is ...
CODE:......................
How do I specify different images for an ImageButton when the state changes (i.e. pressed).
CODE:.................
In a standard button the color changes to orange when pressed, I'd like to change a custom image button with a different image.
Using this as the android:src I get no change on press except to the background which turns orange as usual:
CODE:.......................
Using it for the android:background I get no change at all when I press the button.
The last image button is not being rendered (in fact I see an error which quickly disappears to show the rest of my view minus the last imagebutton.
My activity layout looks like this:
CODE:...........
Tried to debug this in Eclipse but didn't find the cause.
I want to place an ImageButton on another ImageView in android. How should I do it?
View 2 Replies View RelatedWhat I want to do is a database listview
With a small image button and text on the right side
The I want the small image to change with a URL given by
A text file but I am stuck and the 2 hour rule is up
For(file lenght)
So URL is www.site.com/images/(i++).png