Android :: Implementing Gesture Recognition In An App

Jul 26, 2010

I am adding gesture recognition to my app. I have added the view as described in the Android Developers Gestures article but when it comes to adding:

CODEE:..........

where do I put this in my code, do I have to create a new class for it, or can I have it in an inner class, or does it not need a class at all?! I have a set up similar to Lunar Lander which comprises of two files, one of which is a thread that handles pretty much all the physics and drawing of the game. The other file begins the thread and saveInstanceState method. Furthermore, what type is mLibrary?! I cannot find out anywhere! I imagine I will put the OnGesturePerformed method in my thread as this is where I handle all keyUp and Down events.

Android :: Implementing Gesture Recognition In An  App


Android :: Gesture Recognition Library

Apr 11, 2009

I had developed a simple gesture recognition library for Android (not for accelerometer; I mean touchscreen - finger gestures). I had to abandon it for quite a while, but recently I was able to clean it a bit and port it to 1.0 SDK. It is released under GPL. Here are some sample videos:

http://www.youtube.com/watch?v=C7A6OHWfSOE [url]

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Android :: New Gesture Recognition Application

Apr 30, 2009

http://android-wydiwyg.blogspot.com/

Me and some of my friends have made a gesture recognition application for android. It allows you to customize gestures that will call, text, or email one of your contacts or launch an application. Please check out our blog and demonstration video and comment to let us know what you think.

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Android :: Parameterize Speech Recognition - Speech.action.recognition Speech - Does Not Do Anything

Aug 2, 2009

How to I properly parameterize the speech recognizer so that it can more easily recognize the words that the user will probably say?

As far as I can tell there is no way.

I believe this site is wrong: http://www.4feets.com/2009/04/speech-recognition-in-android-sdk-15/

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

Will give a hint to the recognizer that you might say those words. However, it appears to do absolutely nothing. It also conflicts with the google documentation which says:

"An ArrayList of the potential results when performing ACTION_RECOGNIZE_SPEECH. Only present when RESULT_OK is returned." This hints that the array is a return value NOT an input.

To test this out try adding: ArrayList< String > potentialResults = new ArrayList< String >(); potentialResults.add("cumin"); and try to get the speech recognizer to recognize it. You will find it very difficult.

How to properly control the speech recognizer?

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Android :: Gesture

Jul 31, 2009

I would like to know what is meant by gestures in typical mobiles more specifically android ones. Android supports gesture recognition.

Is a gesture termed as when user holds the device and shakes it(say upwards, downwards or side- side)?
Is a gesture termed as when a finger is placed on the screen and traced UP,DOWN,RIGHT,LEFT? If so what is the difference between touch screen and gestures.

I am confused between 1) and 2) option.

What is a gesture exactly?

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Android :: Implementing In App Purchases

Jan 7, 2010

It looks like Android won't natively support in-app purchases for a while, and when it does there might be a huge user base with devices that don't support them.What's the best way to implement iPhone-like (additional content or services) in-app purchases in Android using the Android Market if possible?

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Android :: Implementing Action Bar

Jun 24, 2010

I am working on creating an Action Bar like the one from the new Android UI Patterns and I am running into a bit of trouble. I have a ViewSwitcher with two layouts in it. When the user taps the search button I animate between the two layouts. The problem is that the layouts are different sizes and I can't figure out how to make them take up the same amount of space. Here's what I mean. p.s. forgive the bad art, they are just place holders ;)

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Android :: Implementing An OnClickListener?

Nov 9, 2010

I am trying to do something similar to that of the android lock screen pattern. I have a class that extends a view that I create multiple instances of. These appear on the screen all at once.

I need to be able to click on them individually and have each one turn green individually, however only one on touch listener is listening at once and it belongs to the last dot which appeared, so if I click anywhere on the screen the last appeared dot turns green no matter where I click.

Here is the code for my dot class:

CODE:......

In the code I called newdotdraw multiple times.

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Android :: Implementing L2CAP

Aug 13, 2009

With reference to the current work at : http://android.git.kernel.org/?p=platform/frameworks/base.git;a=tree;...

Can you tell me how can I implement L2CAP Socket?

I need to do it ASAP for a university project. Hoping for optimistic reciprocation.

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Android :: Implementing Predictions For IME?

May 14, 2010

Kindly share information regarding how to implement predictions for input methods... I have a new keyboard layout for which I need to provide prediction/sugeestion functionality....

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Android :: Implementing A Framework ?

Nov 16, 2010

I have 2 apps which should both contain some similar activities.... Now I decided to write a new app, some kind of "framework", which contains these activities, to avoid to write the code twice. How can I use these activities in my other 2 apps ? Whats the common approach for doing this? Adding the "Framework app" to the build path of the two other apps won't work.....

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Android :: Gesture Over A Button

Oct 6, 2010

I create some gestures and they are working, but if I add a button the gesture doesn't work over the button. I split the display resolution to make different gestures and i get x, y coordinates. If i make a gesture starting with the button the coordinates are both 0, only under them i get normal coordinates. It's like the coordinates are starting only after the button.

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Android :: Gesture In Listview

Oct 13, 2010

I have to add a gesture to my listview,i want to implement the same functionality of contact application.
when i left swipe it should send a message,right swipe it should call. can anyone help me how to do those gesture detection... i have implemented it in various other views... but i couldn't do for listView... i don't what going worng...

My code is:

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

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Android :: Best Approach To Implementing Polling

Jul 12, 2010

I am required to work on an application which is be deployed on devices running Android 1.5. The application is supposed to maintain a connection with a server and regularly poll it for new data. The server will notify the client of new data following which the client will connect to the server and download the data.I know that ideally a push based approach will be more conducive here given that we are to run this on a mobile platform. Also, from Android2.2 there is going to be support for C2DM(Cloud to Cloud device Messaging) but as already mentioned this application is for devices running Android1.5.Implementation: I was thinking of using AlarmManager which would Broadcast Intents periodically(poll interval), The Broadcast receiver will then try to connect to the remote server and make data changed check. If the server has an update, the thread will connect to the remote server and download the data from the server.

Problem and Issues: 1. Is this the right way to approach the problem? 2. Is AlarmManager reliable? Would it remember Alarms after a device boot? (I think it does) 3. How do I ensure that battery usage is kept at minimum.(I have heard something about using "keep-alive" to sustain the session for longer time..what is this legend?) 4. What are other things that I need to consider? I am sure I must be missing lots of things here.

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Android :: Designing And Implementing App Idea

Jun 27, 2010

Does anyone have any good references for designing and implementing an idea I have for an android application. My idea is for an application that stores information and reviews about a specific location and presents this information to user.I have gone through all the tutorials and have been reading up on anything and everything about android. Now I am ready to challenge myself with my first app.

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Android :: Can't Find Certain Implementing Classes

Mar 19, 2010

I am looking for the implementation of the IAlarmManager.I am interested in the scheduling done by the AlarmManager.setInexactRepeating method and so I started looking for the implementation but I haven't been able to find anything.Internally to AlarmManager, I can see that the actual work is being done by an android.app.IAlarmManager interface.After googling around for a bit there seems to reference to an implementing class called android.app.IAlarmManager.Stub but that is as far I get.I am working with Android 1.6.

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Android :: Implementing Customized Drawable

Jun 3, 2010

I was trying to get hold of 2D graphics in Android.As a example i want to implement a custom drawable and show it in my Activity But when i run the app i see no rectangle on the activity, can anyone help me out? Where am i going wrong?

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Android :: Implementing Application With Database

Aug 4, 2010

I need to know how to create simple android application by sqlite database, how can i view the sqlite database and to view the tables has like other mysql server,Let me help to create simple application with database.where i can find the database.

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Android :: Implementing VoIP Program

Nov 14, 2010

I have some design questions that I want to discuss with people interested in helping me. I am planning to develop a simple VoIP program that allows two Android phones in the same network to use VoIP. My goal is simply to capture sound, send the data with UDP, receive UDP data and play sound.My current design is to have 2 threads: one captures the microphone and sends the data; the other one receives bytes and plays them.I was starting to implement that using MediaPlayer and MediaRecorder. The issue that came up is how do I record and play sound? By that, I would like to know if I need to use a file, although that seems slow, or if there is anyway to have the recording automatically sent to my UDP socket please?Basically, I wonder if I have to record to a file, then to be able to play it, or if I could just pass a socket (for recording and playing).

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Android :: Best Practice For Implementing Watchdog

Sep 17, 2009

I'm writing an application where real-time knowledge of the GPS state is critical to convey to the user. I request GPS updates at 1000 ms intervals -- when I haven't received another update 1500 ms past the most recent update, I want to display a yellow icon, and 5000 ms after the most recent update I want to display a red icon. Currently, I'm doing it like this: private CountDownTimer gpstimeout; public void onLocationChanged(Location location) { if (gpstimeout != null) gpstimeout.cancel(); gpstimeout = new CountDownTimer(5000, 1500) { public void onTick(long m) { setYellow(); } public void onFinish() { setRed(); } }; gpstimeout.start(); }

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Android :: Error On Implementing OnClickListener ?

Mar 30, 2010

I am writing an application which one of the activity has a button and use this button to switch to another activity when clicking that.

The main activity implements the onCreate and OnClickListener as follows:

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

When I try to run this program on my emulator, after hitting the button, the program stopped unexpectedly. I follow the instructions of implementing OnClickListener firmly so I don't know what's the problem in my implementation.

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Android :: Implementing A Touchable Calendar

Jan 12, 2010

I am creating a small calendar control that will be part of an application that runs on a larger-than-phone-sized screen. The calendar will simply display the current month and allow users to touch-select a day with an iPhone keyboard style popup bubble indicating which day is chosen.

The problem is that in order to do it with buttons would require 42 tiny buttons, which would probably be a resource hogging solution. Although a keyboard would give me the iPhone-keyboard-bubble-like behavior, i dont think that we can place a keyboard in a static location within a Layout, using it like a View.

So I am wondering what is the best way to go about implementing this. Is my "42 buttons is too many" assumption correct? Is my keyboard assumption correct? Do I have to use a SurfaceView (or something) and draw everything myself? Is there some other grid-like control that can make this simpler?

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Android :: How Does Touch Gesture Processing?

Dec 15, 2009

I want to know that android has a touchscreen requirement about hardware and software.And how does touch gesture processing where, for example, in driver layer or framework or application,

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Android :: Crash On Gesture Recognize

Sep 3, 2010

I got a crash with the following stack trace:

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

Line 130 in my code is: ...........

What's wrong and what checks can I perform on gesture before sending it to recognize to avoid this crash?

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Android :: Gesture Or Shorthand Keyboard

Apr 30, 2010

I got pretty good at using the Palm shorthand for entering text. I'm pretty sure that a similar "shorthand keyboard" would work out well on the Android phones, but I haven't seen any apps that will replace the keyboard with a "shorthand" pad.

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Android :: ScaleGestureDetector Not Detecting Gesture End

Oct 31, 2010

I have hooked in a ScaleGestureDetector to an OnTouchListener as instructed in Android documentation. For some reason the ScaleGestureDetector does not always detect end of a pinch gesture. This happens mostly when pinching fast from large to small.

The effect is that after I have released both fingers the detector does not fire the gesture end event. If I touch the screen with one afterwards it still thinks I'm continuing the scale gesture (keeps firing onScale events). I have to do another gesture to get the detector to fire end event.

I have added logs to the OnTouchListener and when the scale gesture gets stuck I still get motion events normally when using one finger and event.getPointerCount() is 1.

I have made sure that I don't have any other listeners intervening. View that has the onTouchListener is not the only view on screen but this effect happens also when I'm very careful to begin and end the gesture inside this one view.

Is there any way to improve the end detection?

Or if there a way for me to manually set the ScaleGestureDetector to fire onScaleEnd and change scaleGestureDetector.isInProgress() to false?

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Android :: Using Gesture On Top Of Menu Buttons

Feb 2, 2010

What I want is to have an options menu where the user can choose to navigate the menu between:

1) touching a button and then pressing down on the trackball to select it, and

2) drawing predefined gestures from Gestures Builder

As it stands now, I have created my buttons with OnClickListener and the gestures with GestureOverlayView. Then I select starting a new Activity depending on whether the using pressed a button or executed a gesture. However, when I attempt to draw a gesture, it is not picked up. Only pressing the buttons is recognized. The following is my code:

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

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Android :: ViewFlipper - Gesture Detector

Mar 25, 2010

I am using gesture detector to catch "flings" and using a view flipper to change the screen when this happens. Some of my child views contain list views. The the gesture detector wont recognize a swipe if you swipe on the list view. But it will recognize it if it is onTop of TextView's or ImageView's. Is there a way to implement it so that it will recognize the swipes even if they are on top of another view that has a ClickListener?

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Android :: Gesture To That's Used On Start Screen

Jul 6, 2010

What Android Api is used to get the scrolling to the left or to the right on the start screen on Android?

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Android :: How To Use Map To Zoom With Hand Gesture

Apr 15, 2009

How do you use the Android API to zoom in and out maps with the 2 finger gestures like iPhone?

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