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I developing an app. In that app music player is there and added some functions like to open YouTube and music.   When I open the YouTube  we will play some videos and our developing app is running at background.   In background app we want to detect any music are videos are playing and detect music and videos are stoped.
in AVFoundation (Audio)
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i am working on firmware update for BLE device. i am not able to understand the firmware update if the code is available in github just send me the link
in Bluetooth
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i am working on music player in our desigining app to detect the any music is playing while app is background   like youtube are songs playing  
in iOS Multitasking
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is possible how to read and write the characteristics if inbuilt bluetooth is connected to bluetooth device in ios swift by programitically
in Bluetooth