gps

In one of our application we need to use the GPS continuesly ,the purpose is to get the user driving speed. Recently I found that while using the GPS continuesly can drain the device battery. If the GPS device is not used, device battery will work for hours but if the GPS is used it reduces the battery life dramatically. I was wondering that "what are other things" which can reduce the battery time? How we can avoid them ? What are the best practices to use them? Yaqub Ahmad Well i found the answer here, Google I/O 2009 - Coding for Life -- Battery Life, That Is What can I do to increase

I found many algorithms to convert (latitude, longitude) into (X, Y)... however, I cannot verify if the results I'm getting are correct.. I found also this link which does the conversion online.. but I couldn't manage to get any algorithm which gives the same results as the one given by the link.. I would be grateful if anyone has encountered the same problem and can help me iOS solution If you're looking for some ready to go code in Objective-C you can check out UTM converter . It is also available as a CocoaPod. There's a very nice Wikipedia article on UTM . It's got formulas, background,

I want to create an (game based) iPhone application which sends your GPS location on a specific time (like 3-5 times a day) to a server. I found an apple page explaining some functionality to run in the background like location, music and VOIP. I need the GPS to be accurate on the meter. Can someone help me with a small example? It really depends on your usage of the location. If you monitor actively, kiss the battery of your user goodbye. Very detailed accuracy, even bigger hit to battery. The backgrounding of location is all or nothing as far as accuracy goes. Less hit, less accuracy is

Problem: Given two locations: L 1 = (latitude 1 , longitude 1 , timestamp 1 ) , L 2 = (latitude 2 , longitude 2 , timestamp 2 ) , and a configurable, but constant, movement speed: v = 1.39 meters per second (for instance). How can we interpolate between these two locations to estimate a users location as he travels from L 1 to L 2 ? I have been searching for solutions to this problem and so far I have found, that for small distances (away from the poles) linear interpolation can be used. So, I looked up linear interpolation on Wikipedia and found this: // Imprecise method which does not

It seems that we can not get sensor data in the web workers. I wonder the reason behind it. The use case is that I am thinking about getting geolocation data in the worker thread and only send the processed version to the main thread. For GPS, this post says it is not supported in the worker thread (no reason is given). And I double checked it, navigator.geolocation is not supported in web workers. For accelerator and gyroscope, we have DeviceOrientationEvent and DeviceMotionEvent. But we need to use them through the window object, which is not available to the worker thread. The same

I googled about it and there were solutions regarding the exploitation of Power Manager Bug to resolve this issue. But as the bug has now been solved. So how can now I solve this issue of starting the GPS when the app starts? Please help. Use this function : private void turnGPSOn(){ String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED); if(!provider.contains("gps")){ //if gps is disabled final Intent poke = new Intent(); poke.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider"); poke.addCategory

In my android application which uses GPS, I have UI elemnts that should blink permanently. I was told after a couple of pilot runs that the blinking GPS icon, i.e. when GPS is actually trying to get a fix, steals completely unnecessary bit of user's attention from the main UI. Is there a way to remove the GPS antenna icon from the status bar programmatically from within the application? Or, alternatively, make it never blink? Thanks! You could hide the Status Bar altogether: http://blog.thaichaiguy.com/1600/android-how-to-hide-the-status-bar-and-title-bar/ This is outside of the scope of the

进入新公司参加的第一个项目，采用的是海思的Hi35xxVxx芯片。 我这边负责的模块是GPS模块，利用SDK代码框架，配置海思Hi35xx 芯片的串口，从串口读取GPS模块数据。 首先第一步，配置内核uart： 通过看芯片数据手册，GPS预留接口是 UART4。但是海思芯片未配置UART4。于是我们得从内核源码树配置UART4。 当然，得基于海思的内核patch 来配置，因为，原生内核是未对hi35xx芯片做适配的。 我们进入：osdrv/opensource/kernel/linux-4.9.y/arch/arm/boot/dts/ 目录 修改patch： diff -Naur linux-4.9.y.sdk/arch/arm/boot/dts/hi3559v200-demb.dts linux-4.9.y/arch/arm/boot/dts/hi3559v200-demb.dts --- linux-4.9.y.sdk/arch/arm/boot/dts/hi3559v200-demb.dts 2019-07-09 07:51:20.578954127 +0000 +++ linux-4.9.y/arch/arm/boot/dts/hi3559v200-demb.dts 2019-07-09 07:52:49.770587238 +0000 @@ -39,6 +39,9 @@