Android :: Any Accessibility Hooks Into System
Feb 23, 2009
Are there any accessibility hooks into the system which will let me build an application that can monitor for system wide GUI events, such as application windows being activated/focused, keys being pressed on a particular widget, mouse clicks on buttons?I'm looking for behavior similar to that provided by java accessibility utilities (http://java.sun.com/javase/technologies/ accessibility/docs/jaccess-1.3/doc/api/com/sun/java/accessibility/util/ package-summary.html)
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Jul 29, 2010
it's possible to hook process in Android? for example we can hook process in windows:"trap events that will occur, either in your own process or in other processes. By "hooking", you tell Windows about a function, filter function also called hook procedure, that will be called everytime an event you're interested in occurs"
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May 3, 2009
As part of my roll as an administrator I manage projects arried out by my group. I am writing for help with a Google Code project dealing with the accessibility of Android to the Visually Impaired using TTS and Braille displays.
The project can be found at:
http://slimvoice.googlecode.com/ .
Unfortunately changes to the os must be made to allow for hooks in our Screen Reader to be able to dril out the visual elements on-screen.
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Oct 29, 2010
I want to use the accessibility classes, but I'm a begginer in android programming and i can't understando how to use them. I don't find any example using these classes. Somebody can give me some use examples? Another thing Can I set enable the Accessility mode in the emulator?
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Nov 6, 2013
I am using a Karbonn A12+. It is a Mediatek device (MT6572 chipset) and works on almost stock Android 4.2
I have installed Talkback, Floating Notifications and a few other apps that require accessibility service but none of them appear in the accessibility settings option. Doing the exact same thing on my Android 4.1 based tablet and Android 2.2 phone creates an option to enable accessibility service for apps requiring that. How to get things back to normal?
I am not visually impaired or anything, just want to use those apps which require this. I really want to use Floating Notifications along with XHalo Floating Windows to get Halo like multitasking on the stock rom. The snapshot below is all I get in the accessibility settings screen. I have tried Factory resetting the device and wiping cache/dalvik cache, fixing permissions, things not even distantly related to the problem but to no avail.
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Sep 2, 2010
Does anyone know what the Settings->Accessibility is for? I cannot turn it on, it is always disabled (grayed out).
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Aug 5, 2010
not sure if this was on 2.1 or not, I just noticed it on 2.2.Anyway, what is this accessibility? Under it there is Soiundback, Talkback, and Kickback. What are these?
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Jul 11, 2010
Why is the accessibility menu in settings on my phone empty and disabled
shouldn't there be somethings to be changed alike text size or something?
Samsung Galaxy Spica i5700
Android 2.1
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Apr 23, 2010
I wonder if someone could help me. I'm registered blind and I sometime stuggle to read really small text and only certain apps work with pinch to zoom.I went into the Settings > Accessibility but there is nothing in there except for a greyed out Accessibility option which I can't select.I'm assuming I need to install accessibily apps for them to show up here but I haven't a clue what ones I need or where to get them. Can anyone help me?What I'm after is something like the 3 finger tap on the iPhone/iPod Touch which zooms in no matter what I'm looking at.
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Apr 18, 2014
I have Rooted karbonn a6. But can;t turn on accessibility feature in it.
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Aug 24, 2010
In the settings menu on my DI there is a menu category called "accessibility". When i hit that button, it brings up a dim option to check or uncheck, but it can't be checked. What is this for, and how is it accessed?
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Feb 10, 2013
I'm using Go Launcher Ex Notification, but i can't see the application on accessibility settings! so i can't use notifications badge for all applications (facebook, whatsapp, skype, etc...), they required Accessibility ON but there is no Go LAuncher Ex notification there
Using CM10.1 4.2.1
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Nov 22, 2010
I am not able to figure out the accessibility setting could some throw light on it.
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Jan 26, 2014
I have a Galaxy S3 that I got a couple months ago, love it but there's just this one problem. The headphones that I was using at the time that I got it were a little damaged so the left side was quieter than the other. I used the accessibility option to shift the sound balance to the left so that it would be balanced. A little bit after the most recent update (4.3?) rolled out I happened to purchase new headphones so I went to switch the sound balance back, but to my surprise there was no longer the "sound balance" option in the accessibility menu. It seems like the settings for the sound balance managed to stay how they were but the actual option to change them disappeared. This makes it extremely hard to listen to music in headphones and when I plug my phone into car speakers it's much louder on the left side of the car.
I know that Poweramp and Rocket Player both have sound balance options, but I often use apps like Songza, Google Play Music, and Soundcloud so buying the full version of Poweramp wouldn't cut it. No equalizers gave me the sound balance options I needed either.
If I absolutely have to I guess I could do a factory reset of my phone, but that's the last thing I want to do as it would be a huge hassle to transfer all the music/pictures/apps back onto the phone.
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Aug 11, 2010
I saw an Android tip that said "Use the power button to end a call", but it needed to be turned on in the Accessibility menu. When I got to Settings->Accessibility, it is grayed out and it says "Downloaded accessibility application is required to activate". What app do I need to download to enable this accessibility setting?
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Feb 9, 2009
Is it possible to write data or create folder in system directory like /system/media/audio/alarms. i.e other than our respective package.
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Nov 17, 2010
I am an Android app developer, and I have purchased a Nexus One device which I use to continuously test my developed Android applications.
Background: ----------------- One of the applications I developed uses a native shared library (e.g. myNativeLib.so). Only my application loads & uses this native library. I had developed this app before Android NDK came out. I pack my native library into my apk's 'assets' folder, and during my application start- up, I extract this native library from my package's assets folder to my app private directory (i.e. <assets> -> /data/data/<myappprocess>/ myNativeLib.so). Then I use System.load() API in my application to dynamically load this native library.
Problem: ------------ This application was developed during Android 1.5 (i.e. cupcake) days {I didn't have the Nexus One then}. The above procedure has been working without any problems right from Android 1.5 to Android 2.2 (i.e. Froyo). I have also tested the same on my Nexus One for Android 2.1 (i.e. Eclair) and Android 2.2.
The problem began the moment I recently upgraded my Nexus One to Android 2.2.1 via the FRG83 system update. Now, whenever I try to load my native library, I get the following error:
D/dalvikvm( 3653): Trying to load lib /data/data/<myappprocess>/ <mynativelib>.so <some address> I/dalvikvm( 3653): Unable to dlopen(/data/data/<myappprocess>/ <mynativelib>.so): Cannot load library: link_image[1995]: failed to link <mynativelib>.so
What I have Tried: -------------------------- 1. I tried my application using Android 2.2 SDK (emulator)...it works, no issues. 2. I checked out the latest froyo & android2.2.1 source code from Android open-source, built & tested my application + native lib using the latest froyo source...it built & ran, no issues. This should've taken care of any changes in the native code dependencies between Android 2.2 & Android 2.2.1 3. I even checked Android 2.2.1 source code for dalvik (java System & Runtime classes) + bionic (linker & dlopen sources) between Android 2.2 & Android 2.2.1 (using source checked out from Android open-source), but couldn't find anything consequential 4. I am unable to return my Nexus One to Android 2.2.
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Sep 4, 2010
Phone: UK Galaxy S Issue: Recovery boot error message in red writing
Multicsc : can not access to / system/csc/VOD/system/
Background: I have been trying to root my phone from information found in a youtube video. All went well and the little ninja bloke with the sniper rifle was in the app list. Tried installing busybox and was told that the phone was not rooted�..
I think I ran the root application again and at some point I started getting this error message when in recovery. I have since run the one click root method to unroot the phone and the little nija dude is no longer there. Since I rooted the phone it will no longer connect to my wireless network, it finds the network and attempts to obtain an ip address. After a few min it times out and tries again. When I load the phone recovery the error message is still present.
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Jun 23, 2010
Can we modify the system while the phone is booted now that we have the unrevoked recovery flash tool? is this what NAND unlock means?
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Jul 11, 2012
What will the cwm backup?
if I backup a system with locked bootloader,will the bootloader relock after I restore the system from an unlocked bootloader system?
Which content will cwm backup?(include kernel?)
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Sep 23, 2009
I use Java API "System.setProperty()" to set a system property. After invoke "System.setProperty()", API "System.getProperty()" can return the value just I set. However, when I use command "adb shell getprop" to verify, it shows that this property is not set at all. Do I wrongly understand API "System.setProperty()" ?
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Oct 12, 2010
I'm engineer but more from a chip/assembler x86 level. I'm new to Android. Still figuring some general things out. I have written some apps, but have a general question. If I were to write an improved version of - let's say - TextView. Is it possible to make all app's on the system using this class, basically replace TextView? How are the java classes on the Android system, are they compiled, can I replace the library? Is this protected?
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Oct 12, 2010
I have written some apps, but have a general question. If I were to write an improved version of - let's say - TextView. Is it possible to make all app's on the system using this class, basically replace TextView? How are the java classes on the Android system, are they compiled, can I replace the library? Is this protected?
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Apr 7, 2010
How to push a 3rd party app into system.img given the source code but is it possible to push a 3rd party app into system.img with only .apk file . If so please let me know the steps for doing it .
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Feb 12, 2010
My application can be installed and run on android, in two different places: "/data/MyApplication" and "/system/MyApplication".
I need to know where at the moment is my application installed, if it is in "/data/" or if it is in "/system".
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Nov 17, 2010
How to SET system colours, but I need to find out how you GET them - how do you find out what they are?
On the Samsung Galaxy S for example, the Tab views, the ListView highlights, Menu Items and Summary line on the Preference Screen are all blue.
There are many apps which immitate the style of the Preference Screen and I want to do the same. Obviously I cannot just hard code and set the colour to Blue, as other handsets use different colours.
The question is, is there a way to programmatically find out what colour the Preference Screen Summary Line, Tabs, or ListView selections are, so that you can then set that against a TextView elsewhere in your app?
How do I get the android system colours?
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Apr 15, 2010
In my project ,I need get all the name of the activities ,not only my own application, but also the third party application , and how can I get?
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May 8, 2009
How do I clear the log on a device?When I do adb logcat after hooking up my G1 via the USB cord I seem to be getting old logs and don't see the most recent errors that I am trying to diagnose at the end of the trace.
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Aug 10, 2010
Do we need to call System.gc() to indicate that system should do a garbage collection or just let system to choose when to collect garbage and free it? Because my app will random FCs on certain phones, but if I add some calls to System.gc(), then there were no FCs.
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Aug 5, 2010
I wrote a test to check what kind of permissions are allowed to an application. A test run in the emulator shows the following error: However, a search of SDK doc revealed that only the following permissions are reversed to the system: Code...
This brings up 2 questions: (1) Why did the emulator deny other permissions in addition to those 4 system ones? (2) How could an app get the system permission? If this can only be done by building a custom Android like an OEM build, where in the Android platform does it check for system-level permission?
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