I've been trying out Google Sky Map and it seems a bit off. I hold my phone in landscape mode and point it at the moon as if I were going to take a picture of it. The application shows the moon about 5-10 degrees off from where it actually is. Is this just the accuracy of the compass and orientation detection of the phone?
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I am currently working on an experimental camera app. I'm looking into implementing face detection at the moment and am currently weighing up my options.I have considered the OpenCV port available for android and using their face detection functions, but from demos I have seen of previous implementations the camera seems to lag a lot.Considering the camera on the HTC desire has face detecting, I know it must be possible to get at least a semi decent face detection system in place. I was just wondering if anyone had an opinion on how I could get the best results.Using an available library? Implementing a particular algorithm myself?
View 1 Replies View RelatedI am writing an application that will behave similar to the existing Voice recognition but will be sending the sound data to a proprietary web service to perform the speech recognition part. I am using the standard MediaRecord (which is AMR-NB encoded) which seems to be perfect to speech recognition. The only data provided by this is the Amplitude via the getMaxAmplitude() method.I am trying to detect when the person starts to talk so that when the person stops talking for about 2 seconds I can proceed to send the sound data to the web service. Right now I am using a threshold for the amplitude that if its goes over a value (i.e. 1500) then I assume the person is speaking. My concern is that the amplitude levels may vary by device (i.e. Nexus One v Droid), so I am looking for a more standard approach to this that can be derived from the amplitude values.
View 3 Replies View RelatedI'm reading the android source code, and wanna make orientation animation. I've found that when I rotate the screen, the code will be executed to public boolean setRotationUncheckedLocked(int rotation, int animFlags){}, in which there's a line startFreezingDisplayLocked(). If this method works, there's no animation when I rotate the screen. Thus, I wanna know whether Google forbid orientation animation on purpose, and if I wanna make an animation, whether just use stopFreezingDisplayLocked() instead? Thanks a lot.
View 6 Replies View RelatedI have created an activity for my game which handles all orientation changes by itself and has a fixed "portrait" layout. Actually it uses the accelerometer and is rendered using 2D canvas methods. If the level has been completed I show up a highscore dialog in which the user can enter his name. The dialog is floating above the underlying level screen which gets blurred out nicely. This generally works.
Problem is that the dialog does not get rotated if the orientation of the phone changes. So even if the keyboard is exposed the dialog is shown in portrait mode instead of landscape. I have tried to use an activity with dialog theme instead but the behavior didn't change. After several tries it seems that I have found the reason for this: Once there's an activity with fixed orientation in the activity stack then all subsequent activities keep this orientation, too. They will not react on orientation changes anymore (e.g. if the keyboard gets exposed).
After upgrading to 1.5 SDK the described behavior changed a little bit. Now at subactivities indead react on orientation changes like expected. However, the need to have an opaque background! That means that neither dialogs nor activities with dialog theme will work. Those will stick with the orientation of the underlaying activity. So my workaround is to first start a sub-activity with an opaque black background. This activity then shows my highscore dialog on top. It looks quite okay but I wonder if there's a better solution? Is it possible to show a dialog above a fixed portrait or landscape activity which automatically adapts to orientation changes?
On my Google dev phone there is a problem with the new 1.5 version in combination with an official HTC adapter cable YC A300 and 3.5mm earphones. Android doesn't recognize the earphones (it worked on 1.1!). Android still recognizes the HTC earphones with ExtUSB.
View 2 Replies View RelatedI want to know how to calculate the accelerometer movement.When i place the mobile horizontally in idle state and similarly when i place the mobile in hands,So there accelerometer value change when it is place horizontally or while it is in hand vertically.How To Identify them,Any Sample Codes will be useful.
View 1 Replies View RelatedI understand how to force a specific orientation per activity in the android manifest. I would like to know if it is possible to allow the keyboard to change orientation even though the activity(the layout really) must remain unchanged.
View 1 Replies View RelatedI am pretty new to android. I have a use case where I need to detect a shake and show some images in my application. Can I test shake functionality on android emulator ? What are the other alternatives apart from testing it on a real phone ?
View 1 Replies View RelatedIs this possible? How do i do it? I want to learn but dont know where to begin even
View 3 Replies View RelatedAs part of an application that I'm developing for Android I'd like to show the user an edge-detected version of an image they have taken (something similar to the example below).To achieve this I've been looking at the Sobel operator and how to implement it in Java. However, many of the examples that I've found make use of objects and methods found in AWT (like this example) that isn't part of Android.My question is then really, does Android provide any alternatives to the features of AWT that have been used in the above example? If we were to rewrite that example just using the libraries built into Android, how would we go about it?
View 1 Replies View RelatedI have a code snippet to detect accelerometer movements. It works some times by properly detecting slight movements, but sometimes it detects movements when I kept my device idle too. Are there any problems with built-in accelerometer detection on Android?
I use an HTC G-1 device. My code snippet is below. How do I resolve it so I can detect small device movements but not detect anything when the device is idle?
CODE:..............
I have an itemizedOverlay extended and I want to increase the hit detection on the OverLayItem's if this is possible?
View 1 Replies View RelatedI'm trying to product a binary that is compatible with 1.1 and 1.5, but i'm having trouble with the ViewSwitcher class behaving different. I'd like to create a wrapper for it, but I need a way to programatically detect the api level at runtime.
View 3 Replies View RelatedHas anyone ever used the API for face detect in their android program?More simply stated, can I have a java class that pulls up the camera, scans a person's face and returns parameters back into the program?
View 1 Replies View RelatedI have a problem with working with the ORIENTATION values of the SensorManager. I would like to have some kind of 360°-value which directly shows me if the phone is in normal portrait (0°), landscape, portrait turned around (180°) or anything in between. So I could have, for example, an arrow that points to the floor (like gravity would do with a plummet) all the time, no matter how I tilt (sidewards) the phone. I thought this would be easy, but I'm pretty confused at the moment.
First of all, the X value of the orientation-array seems to correspondent with how I turn the phone, BUT: if it's completely uprightly standing, this value is about 60° ... why not 0° (or 90°, 180°, 270°), as I would expect?
Second: The value resets if I turn the phone and Android automatically changes screen orientation. So both in Portrait and in Landscape mode it will be sth. like 60° when the phone is in a 0° angel in real world. I set "android:screenOrientation" to "landscape" but this doesn't help anything :/
I want the app NOT to change orientation when I turn the phone, but I want it to get a continuous orientation value when I tilt the phone.
On Froyo, we found that some new "Task Manager" apps are now using the ActivityManager.killBackgroundProcesses() to kill apps. When this happens, Intent.ACTION_PACKAGE_RESTARTED is no longer fired. How can I find out that my application has been killed? I tried to start a service, and I do see this message printed in logcat:
W/ActivityManager( 2426): Scheduling restart of crashed service com.example.android.apis/.app.RemoteService in 20000ms
However, the service is never restarted as advertised, if the app is killed using the killBackgroundProcesses API. (If I go into adb shell and kill the service process, the service will indeed be restarted ...) This looks like a bug anyway, because the notification created by the app is no longer removed like in eclair (the StatusBarService, and a bunch of other system services, depend on the Intent.ACTION_PACKAGE_RESTARTED broadcast).
I'm working on a soundboard, however I've got a problem when it come to drag the finger over the screen to play the sounds for the buttons I drag the finger over.Do anyone know how I can detect when a finger enter a button and not click the button?
View 1 Replies View RelatedReally general, very new to bluetooth. Can we have one android device broadcasting a simple 'hello' bluetooth network (maybe a radius of just a few feet) - then when other android devices come into that area, reply with a 'hello' back? The client devices moving through the 'hello' radius wouldn't need to be always be checking for presence. I'd let the user open an app and check for bluetooth networks nearby. If they find one of these hubs, they can then choose to broadcast back a hello.Is that at all possible? Any general info would be great.
View 2 Replies View RelatedI am currently working on a collision detection routine for an Android based game which is capable of handling complex concave curves in 2D. I use complex in this post to describe any non-trivial, arbitrary shape (beyond circles, squares, etc). My problem is that all of the various methods I have come across are either too simplistic to be realistic or too complex for a cell phone. At the moment I am favoring a tile-based scheme but I am having problems figuring out how to do this with convex curves that span several tiles and may have several line segments per tile. I gave some thought to representing the curves mathematically, with each tile being an interval of the function, but there will likely be points where the curve doubles-back on itself (think the big loop at the top of a pinball table that brings the ball all the way around the table and back the direction it came). My questions boil down to:
1. Does anyone know of a way of hit testing a given simple shape (e.g. a circle) against a concave series of line segments (shapes beyond circles can be figured out from there) beyond just a Boolean result?
2. What is the best way to represent large, complex shapes programatically? I am currently favoring an XML file describing my levels and the objects in them with shape/position/physics/etc. data to be parsed in during load time.
3. Is there an altogether better way of doing this beyond line segments?
The one saving grace in this conundrum is that I know the vast majority of the objects are stationary with, at most, three or four (usually one) dynamic objects moving around.
According to the MS website, Windows Media Player queries an MTP device to see what formats it supports. My Razr Maxx HD supports ogg and m4a. When attempting to sync WMP does not sync those files stating they might not be supported on the device. Being that I've had so much trouble in the past even getting any of the Android devices to be properly detected as an MTP device I'm worried this is a driver issue.I should be able to get WMP to at least convert them.
this is the device mis-reporting the formats, Windows not querying them properly, or an actual WMP issue? Would like to be able to get sync working without any conversions. Maybe there is a way to hardcode formats within the mtp inf file?
I've noticed that I get a slightly different reading from the compass depending on how I hold the phone. If I hold it vertically, its different than when I hold it horizontal (ie parallel to a table or floor). Does anyone know the most accurate way to hold the phone for the compass?
View 5 Replies View RelatedThere is no problem with portrait mode but when i try my app on landscape mode it doesn't look how it should.What is general approach to solve this problem.My first idea is replacing X and Y places.If i am on the right track how should i do this ? Should i use an if statement at the beginning of the onDraw() function and write entire same code twice (one for x,y and other is for y,x) ?
View 2 Replies View RelatedIs it possible to detect that the viewport is being dragged by a touch event?
Using the following code I am able to get the position of where the finger touched the screen, what node started the event and where it was dragged to. Which solves one of the problems but I would really like to detect when the user has dragged the page/window/viewport down.
To attempt to be more clear as to what I am trying to do: I would like simulate the refresh activity in Tweetie 2/Twitter for iPhone but in HTML5 and JavaScript. Code....
How can I check if the Android phone is in Landscape or Portrait?
View 3 Replies View RelatedIve got a Rooted and Unlocked to any network OT 990, I have a problem when trying to connect the USB cable Nothing happens apart from the phone charges, Windows does not detect the phone. Have tried in XP and Win 7.
View 1 Replies View RelatedI have a requirement where I have to read/parse some data from the server(using HTTPConnection) and then display it on to the screen. To avoid ANR issue I used AsyncTask to perform the above. Now in order to avoid application crash in case the activity gets destroyed(either by OS or if orientation changes or say on any incoming call-->where user stays on the phone for long and for some reason OS destroys/recreates the activity). Currently, I hols the reference of AsyncTask in my activity and then provide a callback(the activity itself) to AsyncTask so that I can pos back message to activity(like closing progress dialog box).In order to avoid memory leaks on onPause I nullify this activity reference in AsyncTask.Before onPause I save the AsyncTask instance using onSaveInstanceState method but I have to use putSerializable for that. I have read on the forums that serialization method is slow, so my question is should I use parcelable approach(and whether the converting AsyncTask to parcelable will be same as creating any other object parcelable). or both these approaches are totally wrong i.e...............
View 10 Replies View RelatedI've had a Milestone for about a month now and have noticed that it seems to have problems detecting that the USB cable has been connected.Sometimes when I connect it, to the mains charger or to a PC, it doesn't indicate that anything has happened - no USB notification and no lightning symbol on the battery to show that it is charging. If I power the phone off and then connect it the phone turns on and shows the USB notification.Has anyone else experienced this or should I look at getting the phone exchanged?
View 2 Replies View Relateddoes anyone know how does face detection work in the desire's camera. i have it enabled but i don't see any changes. any ideas guys?
View 5 Replies View RelatedIs there any way to have my wifi automatically turn off when i leave my home wifi connection? I'm trying to not have it continue to search for signal ans drain bay when not in range at home
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