Abandon the app idea
I don't know if it's possible for you, but here are a few options: if you have an aftermarket stereo just get a 3.5mm cable and plug the phone into your stereo. Most, if not all, modern aftermarket stereos have a 3.5mm jack, although it may be in the back of the unit. You can listen to your music and when you get a call it just goes through the speakers. If you have and want to keep your factory stereo, there are bluetooth adapter kits. The adapters I've seen use the factory CD changer port, so if you have CD changer, you'll no longer be able to use it. But, after a quick Google search, I've found these adapters cost nearly the same as a stereo. Having said all that, I would recommend an aftermarket stereo with bluetooth. All the manufacturers, such as Pioneer, Kenwood, Alpine, JVC, etc., offer bluetooth stereos for relatively cheap (around $150+, for example: http://goo.gl/cFtpM
). These typically feature better EQ's than factory stereos as well as the ability to expand your system by adding amps (I had a Nissan 240SX with a Pioneer stereo with a 4-channel amp for the speakers and a 2-channel amp for a 10-inch sub connected to it; *sigh* I miss that set up). But also, when you get a new car and assuming the stereo doesn't have bluetooth, you can take your stereo out of the old car and put it in the new one. All you'll need is a new adapter cable, which are pretty cheap and can be found at a car audio shop or electronics store or online. The adapters and stereos do require a little bit of work as you'll have to remove the dash as well as the stereo to install them, so if it's too daunting you'll want to have a stereo shop install it, but that'll increase the cost.
Some years ago B.A. (before Android
), I installed an aftermarket iPod adapter into the factory stereo of my wife's Dakota. Now, I have some automotive experience and tools, so it wasn't a big deal to me to remove the dash, pull out the stereo, install the adapter and put it all back together. When I inherited the truck, I pulled the factory stereo out and installed an aftermarket one (which is about 3 years old) I had in my 240. It has a 3.5mm jack in the back so I ran a cable down through the lower dash panels (you'd be surprised how much room there is to do this). To do all this I did a Google search to help with install these.
I know, none of my suggestions are free, although 3.5.mm cables are only $5 or so, but they work well. Like I said, I recommend going with a stereo, as I view it as more of an investment because you can hold onto it even when you get another car.
T-Mobile SGS3, Rooted
ROM: After playing with AOKP, I'm back to stock Root66 UVDMD5
T-mobile SGS3, Stock
Noob's click here
Why you don't need a task killer
If at first you don't succeed, read the tutorial/thread again