General :: Built-in EQ For Android Bluetooth Stack?
May 18, 2012
Does Android use a built-in EQ or limiter on their Bluetooth stack? I am running into a situation where both of my android phones, One X and Nexus One, have developed a "clipping" noise when I listen to music through the Bluetooth in my car. This same clipping doesn't happen when I listen to podcasts, only music. My assumption is that something in the framework is clipping the audio saying that it is too loud and causing this to happen.
I have also used the same Bluetooth setup my WP7 phone, an HTC Titan, and I do not hear this same noise at all. I have only heard this through my android phones which leaves me to believe that it is something based in OS level and not the Bluetooth set up itself.
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Feb 17, 2013
I work at a small company that fields autonomous android devices which programmatically connect to bluetooth telemetry devices. These devices require pins, so we need to automatically create a pairing in order to connect to the bluetooth devices. We DO have root access.
Since the new Bluetooth Stack in Android 4.2, I have been unable to use this common AIDL bluetooth reflection method in our private utility app:
Code:
public IBluetooth getIBluetooth() {
IBluetooth ibt = null;
try {
Class c2 = Class.forName("android.os.ServiceManager");
Method m2 = c2.getDeclaredMethod("getService",String.class);
IBinder b = (IBinder) m2.invoke(null, "bluetooth");
[code]...
The issue about this strategy no longer working is documented here. I previously used the setPin method as well as the createBond method from this Interface, and now I cannot.
Is there anyway to manually create a bluetooth pair profile under Android 4.2? Is there a database file where the profiles are stored that we can use root and sqlite3 to access?
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Apr 13, 2010
After Bluetooth connection is lost. Bluetooth stack on HTC Legend is messed up. Nothing works till Bluetooth is turned off and on. Here is the sample, the problem is blocking read on the thread but InputStream.available call always returns 0 and cannot be used to implement some ugly, busy-waiting workaround. package com.example.android.disconnectproblem; import java.io.IOException; import java.io.InputStream; import java.io.InvalidObjectException; import java.io.OutputStream; import java.util.UUID; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ListView;
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Nov 27, 2013
I have done many of reverse engineering for other electronics in the past, Since Im new to android I was wondering before even wasting my time if is possible to port, or built a rom from sources or a phone thatis NOT External SD built in to a phone that it have the external sd built in.
Making it short can I try to reverse engineer the android code from a Nexus 5 (no ext_sd) to other device that have ext_sd built in?
If is possible where should I be looking to start trying making some development on this as I haven't done nothing close quite.
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Aug 17, 2010
I tried so many roms in the past 2 weeks, and the interesting thing is,only CM6 has the full bluetooth stack (which also allow HID support) bluetooth keyboard and mouse.How come no other room are compiled with the bluetooth stack?Is it only me who needs a full working bluetooth?or I did something wrong?
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May 12, 2010
Has anyone been able to successfully use a SPP Bluetooth device with their Incredible?I have been trying to connect a QStarz BT-Q890 Bluetooth GPS unit to my HTC Incredible. The BT-Q890 uses the Bluetooth protocol SPP (Serial Port Profile I think) to communicate. There is some indication that SPP support has been removed from the Bluetooth stack by HTC/Sense.While the BT-Q890 pairs with my phone, I cannot get the "Bluetooth GPS" app from Googoo or the "Bluetooth GPS Service" app from Trackaroo to communicate with the device. Both apps fail to establish a connection to the BT GPS, and sometimes even hang my phone and cause a phone reboot!I have tested my BT-Q890 with a Motorola Droid and the connection was fine. I also tried it with a second Incredible, and received the same failures.Help!
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Jul 19, 2010
I figuered out how to tether with the phone. Pair the phone via Bluetooth and go to "Show Bluetooth Devices" and "connect using" and then "access point. Now you have tethered with Bluetooth.
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Aug 29, 2010
I'm having trouble retrieving / viewing the call history (X10) with a bluetooth connection to a built in car kit.i.e. missed / incoming / outgoing.The only option I get is phonebook and then have to scroll through to the required number.Have I missed something? Is this feature supported (can't find anything in the user manual) or will I need to use an app?I know the car kit supports this feature as my work Nokia (basic phone only) is fine.
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Sep 3, 2012
Ihave a Question to the standard Android VPN Client because i cant test it:
- If i connect my VPN after i started my Smartphone,- what happens when my mobile Data Connection lost? Do Android perform an auto reconnect to the VPN when the data connection is restored?
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Jun 17, 2012
Which music players use phones eq not their own?
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Aug 29, 2012
Just wondering what would be better/more accurate for a data usage counter...
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Jun 6, 2012
I have created an HTML5 'app' with a width and height 480 x 800 to be used as an android app.
Plan is that this can be scaled down/up for other Android devices to fit screen.
The app runs fine, but it is not being scaled to my device screen size. I have to scroll up/down and left/right on the every screen.
I have tried nearly every variation of the meta viewport tag with no succes (in the index.html file).
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Nov 18, 2012
I have installed Eclipse. Hello world app working fine. My question is how I can use built-in camera in my application? I already gave permission. Where should I write code etc and what? My knowledge about programming is also very poor.
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Jan 22, 2014
Is there a way to block or remove built in applications on an android phone. I want to limit what you can do on the phone e.g. only call, text, email and use one or two third party applications. Is it possible to do that without rooting the phone?
Looking to do this on a Samsung Galaxy Pocket.
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Aug 17, 2012
How do I replace builtin apps with the latest versions as they are eating up the internal storage...
As google play, Maps, voice search, Gmail, Google search...
These apps take a lot of memory space ... So i am looking for a solution so that the outdated apps of factory versions can be totally removed and replaced with updated versions...
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Jun 11, 2013
i'm using Galaxy Fame and he have built in FM transmitter. Do i need an app to listen music in my car, or there is an option in music player to "activate" that transmitter? I was searching for that, but no results.
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Apr 26, 2012
I'm trying to make a custom kernel for the Samsung Gravity SMART using sources from the unofficial CM9 port for the Gio/Ace (which both use very similar hardware to the Gravity Smart). What I've succeeded at so far:
1) Acquiring the source, both for the CM9 kernel and for the stock Froyo kernel
2) Searching for the device-dependent references in the stock kernel
3) Porting those changes over to the CM9 kernel
4) Getting everything to actually compile
5) Acquiring the stock CM7.2 source
6) Creating device makefiles (i.e. BoardConfig.mk, etc)
7) Building CM7.2 using kernel built in step #4
8) Putting the various img files into an Odin-compatible .tar.md5
9) Actually flashing to the phone.
And for all that work, I got.. a soft-bricked phone (fortunately, I have an Odin file for stock firmware). The phone boots to a SAMSUNG logo (not flashing/throbbing). how the heck do I figure out what's actually failing? Is there a bootloader to unlock, and if so how do I unlock it?
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Nov 2, 2009
There is a stack of activity i want to call the activity from that stack , My question is that is it possible to check from that stack and call that intent.When i press home button and again when i press the executable it should start the activity where i have left .Is it possible?Any example related to the same would be great help
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Dec 15, 2013
I just deleted some font with Root Explorer to directory of root>system>fonts> and reboot. When rebooted, my phone got stack to Alcatel logo. I tried Factory Reset but same thing happened. What should I do? My phone is rooted using Framaroot. When charger is plugged it is charging and also the notification light says its charging. I tried the One Touch Upgrade tool of Alcatel but it still does not work.
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Jun 7, 2012
I installed Timeriffic & it's effective at silencing notifications at night. Unfortunately, my alarm didn't go off this morning. Alternatively, is there another way to silence emails at night & still be able to use the built in alarm (razr).
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Apr 18, 2012
How to disable the baked-in power saver feature in some Samsung Android phones? the one that dims the screen, turns off the keyboard backlight, and doesn't let you use the camera once you hit 15%(or 10%) battery left? can't stand that, for my own needs anyway!
i figure it might be an edit to the kernel source code, or something like that. i just don't know where to do that. I know it can be done tho, because i remember having some ROMs on the Epic 4G that had that junk disabled. guess i'll also see if some of those old devs. are still around.
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Mar 15, 2013
Trying to get CM10 built for the Samsung Galaxy Reverb. It's building just fine, but no matter what we try it WILL NOT BOOT. We get a black (backlit) screen after the Samsung logo and nothing more.
I've tried flashing the stock boot.img over the rom, building and flashing the stock kernel seperately (that boots the stock rom just fine when flashed but won't boot CM10), and tried modding the ramdisk to boot, but nothing is working.
I've looked at other MSM7x30 devices to find if I'm missing anything, but I can't find anything that I don't have in the device folder.
Here's the device repo: [URL] ......
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Sep 17, 2010
Is there any way to turn the bluetooth option on the caller id screen to automatically toggle the bluetooth function on vs rushing to home screen toggle?
I'm often on the road at work or just have my hands full and it is such a drain running bt all day. Is there anything close to what I'm asking available or possible?
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Apr 28, 2012
I am looking for a way to make a homescreen shortcut to start the ics built in recent apps dialog.
How to start it via activity or intent?
I am using cm9 on a galaxy s2 with apex launcher
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Jan 9, 2013
My Samsung Galaxy Reverb has nobody willing to build CM10 for it, so I decided to take on the task. It built without error - processed the kernel and all the CyanogenMod 10 files just fine and generated the .zip. However, after flashing the .zip I end up with a Samsung logo, then a black screen.
The compile went through without error, so I'm a little lost as to what I should check next. From doing a little searching it seems the kernel is at fault, but what to do about that. Am I supposed to flash the kernel separate from the .zip that the CM builder outputs?
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Sep 2, 2013
I did some changes in my phone's ROM via Dsixda's kitchen.
I want to include the CWM recovery in the ROM.
I have the .img file for the CWMR.
How do I add the recovery in the ROM, so I dont have to install it separately everytime?
Also what are the changes that have to be made in the 'updater script'?
I have Samsung Galaxy Young Duos S6312. Stock, rooted, deodexed ROM. 4.1.2 JB
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Nov 10, 2011
Is there any way to install new version of busybox if using modded rom with built-in busybox?
Cause I have 1.15.3 and not all features of zep's supercharger script will work with this version... X8
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Dec 21, 2009
can any one tell me what is d actual diff in Stack based and Register based JVM?
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Oct 12, 2010
How can i implement SIP protocol in android.I want to make video conferencing application using SIP protocol.So is it feasible using SIP protocol and how to start.
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Dec 1, 2009
Hello all, I am new in android developer and I would like to make a sip based application for this platform. In the signaling part I have found about jain-sip (used it) and sipdroid( any good tutorial? ) the problem starts when I want to stream data from a phone to a server. So the question is: Is there any stack for RTP? does the new SDK support this? I have found this: http://www.hsc.com/tabid/87/ItemId/20/Default.aspx have anyone used this stack? also I found this video on youtube :http://www.youtube.com/watch?v=g1NHEsXFEns which demonstrates the use of rtp to stream video/audio is this fake does any one know how? also I have read somewhere on the net that sipdroid has support for rtp is this correct? thanks in advanced and sorry for the long list of questions regards maxsap
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