Android : Keyboard Event Handler?

Jul 1, 2009

I created a full-screen application and set the default orientation to landscape. When I open the keyboard the application crashes therefore I would like to override the method which executes on keyboard slide. Does anyone know which method is that?

Android : Keyboard event handler?


Android :: Xml View Defination To Take Event Handler Class Name

May 2, 2009

Instead of finding the button (as per the id specified in xml) i.e

CODE:.....

Is it possible to set the Listener class name directly in the xml definition. Most of the time dealing with id's for attaching listeners is affecting our productivity.

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Android :: Should Use Listener Interface Or Handler For Event Callbacks In Development

Nov 16, 2010

I'm new to Java, I'm porting over our Windows Phone 7 library to run on Android. Due to syntax similarities this has been very simple so far. Our library is basically an abstracted http message queue that provides data persistence and integrity on mobile platforms. It only provides asynchronous methods which is a design choice. On WP7 I make use of delegates to call the user supplied callback when an async message has been processed and the servers response received.

To achieve the same thing on Android I've found two ways so far - A simple Java listener interface that contains OnSuccess and OnFailure methods that the user must implement, or using the Android handler class which provides a message queue between threads(http://developer.android.com/reference/android/os/Handler.html).

I've gone with the Handler at this stage as if I'm honest it is the most similar to a C# delegate. It also seems like less work for a user of our library to implement.

Example of some user code to make use of our library:

CODE:.............

Using this the user can create as many different handlers as they'd like, called whatever they'd like, and pass them in as method parameters. Very similar to a delegate...

The reason I'm wondering if I should move to a listener interface is because the more exposure I gain to Java the more it seems that's just how it's done and it's how third parties using our library would expect it to be done.

It's essentially the same process, except each time you wanted to do something different with the server response i.e. You might be fetching different types of data from different endpoints, you're going to have to create a custom class that implements our interface each time, as well as implementing any methods our interface has. Or of course you could have a single monolithic class that all server responses were funneled in to but have fun trying to figure out what to do with each individual response...

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Android :: Can't Handler Done And Enter Event In EditText With Landscape Mode

May 21, 2010

Here is my problems:

1. when i click "done" btn, nothing happen

2. when i click "enter", the input box only add a space instead of newline

[image: bug_1.png]

[image: bug_2.png]

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Android :: Hardware Keyboard Event Using Software Keyboard

Jul 8, 2010

How to do occur hardware keyboard event using software keyboard?

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Android :: Virtual Keyboard Event

Sep 27, 2010

How can I get an event when the user opens or closes the virtual keyboard..?

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Android :: How To Catch Event From Virtual Keyboard?

Jul 28, 2009

How to catch event from the virtual keyboard?In fact, I want to know if the screen is touch for instance.

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Android :: Which Event Fires When On Screen Keyboard Appears?

Nov 24, 2010

I'd like to hook to an event that fires when android's on screen keyboard appears. For example when user taps EditText to bring up the keyboard. Anyone know which event (or listener) to use?

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Android :: Keyboard Input - Touch Event Noisy

Jul 21, 2010

I'm working on a simple game: when you press a button on the screen, a character will run to certain direction. It's easy to support keyboard input. But, some phone doesn't go with a keyboard or even no a track ball. So I decided to draw a virtual "run" key on the screen (with opengl). When the user press the virtual key, I apply a velocity to the character. And when the user release the key, I disable the velocity to stop the character but there seems to be some touch event noisy. If my finger cannot press still, I will see millions of touch down and touch up events, instead of a single long pressing.

And occasionally, my program captured the touch down event when I touch the screen, but didn't capture touch up event. So my character will keep moving, even no finger is on the screen. I'm wondering if there is some way to reduce the touch event noisy and tell if the user is currently pressing on the screen, instead of only getting an event when touch up and down happen. It seems the system UI can detect long pressing, for example when you put a finger on one item of the list view widget, the entire item turns to orange. I just don't know how to detect pressing in my opengl game.

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Android :: How To Detect The Event When Soft Keyboard Hides

May 20, 2009

I want to do something when the soft keyboard hide. Is there any function to detect that event?

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Android :: Catch The Event When The Soft Keyboard Pops Up

Jan 27, 2010

When the user presses editText, the soft keyboard pops up. I want to hide a view or 2 while it is on. How to do that?

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Android :: Push Up Layout In Event That Soft Keyboard Is Drawn

Jul 15, 2010

I am designing an Android app and I'm having a couple of layout issues. I have a screen with 3 EditTexts on it in a row, and I would like for the 'next' key on the soft keyboard to cycle between the EditText fields. As for now, the 'next' key has no effect. Also, when the soft keyboard is displayed, it covers up the third of the EditTexts. Is there any way to push up the layout in the event that the soft keyboard is drawn?

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Android :: Catch Event That Soft Keyboard Shown / Hidden For EditText?

Sep 25, 2010

Is it possible to catch the event that Soft Keyboard was shown or hidden for EditText?

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Android : LongClick Event Also Triggers Click Event

Apr 12, 2009

I use onLongClick and onClick events of a button to get user inputs. Whenever; the user long click and triggers onLongClick event, the onClick event is also triggered. I couldn't find my problem. The code of two methods are shown in below: Code...

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HTC Hero : Why Cant I Edit One Event In A Recurring Event

Dec 15, 2009

I hope there is a way to resolve this or bye bye hero.

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Android :: Set URI Handler ?

Aug 12, 2010

I am working on an application wich has its own URI prefix. (dchub:// in this case) is there a way when someone open his browser, clicks on a link starting with dchub:// my app starts using this address? so far found a lot of examples the otherway around opening the browser from your app but thats not what i'm looking for.

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Android :: How To Implement A Handler

Jul 20, 2010

I've got 2 classes GLLayer and GLCamTest. I'm attempting to run a method located in GLCamTest...

CODE:..........

I'm looking to run in on a thread from GLLayer but from what I understand I need a Handler..

CODE:.........

I'm starting the Thread from within public void onDrawFrame(GL10 gl) { my question is how would I implement said handler? I've read http://developer.android.com/reference/android/os/Handler.html but I still don't really understand how I'd implement it.

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Android :: What Exactly Is Handler And Loopers

Jun 29, 2010

I am very confused about handlers and looper can anyone plz explain it in simple terms to me any good links would be great.

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Android :: Handler Vs AsyncTask

Mar 26, 2010

I'm confused as to when one would choose AsyncTask over a Handler. Say I have some code I want to run every n seconds which will update the UI. Why would I choose one over the other?

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Android :: Looper - Handler Issue

Oct 10, 2009

I'd like to know if Looper can enable handler to handle one message at a time, instead of handling all the messages in the queue together in one blocking call when Looper.loop() is called.

Because the looper sends all the messages in the queue to the handler one after the other in one blocking call, my application displays the ANR message. Instead, I want to be able to handle one single message, one blocking call at a time - the instant it falls into the queue.

The following code illustrates my problem: (pls note the lines referred: 1,2,3,4&5) Question 1: After calling looper.loop in line3, line4 and 5 don't run. Why is this? I tried quit(), but it doesn't help. Question 2: Instead of displaying 0,1,2,3,4 in one blocking call (at line3), I'd like to have 5 different blocking calls for each. Essentially (sorry, if i sound repetitive), I want to be able to use looper in such a way that each time, it ensures only one message gets handled.

Is there a way to do this?

CODE:..................

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Android :: Passing A Service Handler

Aug 9, 2009

I've read the android AIDL documentation and have a general idea of how RPC works between an Activity and a Service. However, for my application it seems overboard to implement such features: basically, I want to pass a Service a nice handler so its thread can pass data to my Activity. Currently I'm getting around this by using a static public member (a hack) but I would prefer just passing a Handler object in the Service's starting Intent. However since a Handler isn't serialize-able , I haven't found a way to pass it to the service without a simple static member hack. Any insight? Or, am I just going to have to suck it up and do a formal RPC to the service?

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Android :: Inconsistent Handler Behavior

Sep 30, 2010

I am using a handler inside my service to display notifications at a certain time using the Handler.postDelayed method. My application runs fine on the emulator just as expected satisfying all cases. But when I installed the same on my HTC Wildfire, it simply doesn't happen as anticipated. Notifications are displayed at a random manner after the scheduled time and some notifications even fail. I'm monitoring my service from the Applications > Running Services and still my service is active.

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Android :: Custom Protocol Handler

Nov 11, 2009

i want to do the following thing - when a user navigates to a web page, I want to have a link in there that looks like this: <p><a href="myprotocol://blah=42">Click here for fun.</a></p> Then when the user clicks on that from the phone browser, I want it to launch my intent with that full url. In my AndroidManifest.xml file, I have the following info: <activity android:name="com.test.MyActivity" style="@style/ MyStyle"> <!-- custom protocol association --><intent-filter><action android:name="android.intent.action.VIEW"></action> <category android:name="android.intent.category.DEFAULT"></category><category android:name="android.intent. category. BROWSABLE"> </category><data android:scheme="myprotocol"/></intent-filter></activity>When I try this, when I click on the link on the web page from the phone browser, it says -- Web page not available The Web page at myprotocol://blah=42 might be temporarily down or it may have moved permanently to a new web address.

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Android :: Httpclient Redirect Handler

Nov 9, 2010

I'm trying to call a web server that is using relative URL redirects for some of the calls. This of course isn't working with DefaultHttpClient as it isn't treating it as a relative URL. I've gotten as far as implementing a RedirectHandler in an attempt to catch the redirect and add in the base call but I can't work out how to get the location of the redirect.

With the following method how do I go about finding out where I am being redirected to? I can't find any fields on either response or context that have what I need and I don't know where else to look.

public URI getLocationURI(HttpResponse response, HttpContext context)

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Android :: How To Pass Handler To Another Activity

Jul 26, 2010

Assume that there activity A and B, A has a handler, now B is activate by A, how can i pass the handler to B? Currently i have a thread receive messages from socket, and dispatch messages to A and B, I think when B is activated, pass handler to B, then the handler can receive message from the thread. But I don't know how to do.

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Android :: Handler Class To Update UI ?

Oct 30, 2010

I need to update my ui for an android app and I'm trying to use the Handler class to do it, using http://developer.android.com/resources/articles/timed-ui-updates.html and the android developer resources "Common Task" for using Handlers as guides.

Basically, I need something between the two - a timed update of the user interface, but without a button. So here is the relevent code that I am working on.

CODE:...............

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Android :: Can't Resolve CalledFromWrongThreadException With Handler

May 12, 2010

I will try to keep it simple:

In my main activity I make a handler:

CODE:.......

CODE:......

But if I call the handleMessage method from a callback function in a other Class, definitely from a other thread, I still get the exception message: CalledFromWrongThreadException (Only the original thread that created a view hierarchy can touch its views) :

CODE:...................

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Android :: Put Object In Handler Message

Jun 9, 2010

I need to download an image from the internet,in a different thread,and then send that image object in the handler message, to the UI thread.And by the way, is this the most efficient way to pass an object to the UI Thread?

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Android :: Better Keyboard - Switch From T9 Keyboard To Regular Qwerty Keyboard

Apr 18, 2010

For those of you that are familiar with better keyboard. I was wondering about an easy way to switch from the t9 keyboard to the regular qwerty keyboard. I was under the impression that swiping left would toggle between the 2 but all that does is bring me to the numbers and symbols keyboard. I've been changing back and forth to the android keyboard because its faster than going into the better keyboard settings.

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Android :: Passing Data From Bg To UI Thread Using Handler?

Oct 13, 2010

In Handler, we can pass some data from a background thread to the UI thread like this:

private void someBackgroundThreadOperation() {
final String data = "hello";
handler.post(new Runnable() {
public void run() {
Log.d(TAG, "Message from bg thread: " + data);
}
}
}

If we use the above, we cannot then use Handler.removeCallbacks(Runnable r), because we won't have references to any of the anonymous runnables we created above. We could create a single Runnable instance, and post that to the handler, but it won't allow us to pass any data through:.............

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