App with AVPlayer plays mp4 interrupt iPod music after launched

删除回忆录丶 提交于 2020-01-11 06:13:49
问题 My App plays mp4 using AVPlayer, when my application finish launching, it interrupt the iPod music, although I have set the audio session to allow mix with others in - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { AudioSessionInitialize(NULL, NULL, NULL, NULL); AudioSessionSetActive(true); UInt32 sessionCategory = kAudioSessionCategory_AmbientSound; AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof

How can I interrupt a thread created from within a method?

醉酒当歌 提交于 2020-01-06 20:23:56
问题 I know that you can interrupt a thread created from say a runnable class, but how can I interrupt this thread I created from a method? Using a volatile boolean isn't working for me, so I assume either there is a better way to do this, or I need to somehow interrupt it. I don't want to interrupt all threads, just this one. I created a method that kicks off a Thread like this: public static void StartSyncThread() { new Thread() { public void run() { isRunning = true; // Set to true so while

AVAudioSession Interruptions

走远了吗. 提交于 2019-12-30 04:04:06
问题 So in my app, running on iOS 6, everything seems to work fine with audio. I use the old C API format to catch interruptions using a callback; setting up via: AudioSessionInitialize(NULL, NULL, interruptionListenerCallback, (__bridge void *)self) and it was great. Using iOS 7 SDK though, it seems that my interruption callback is never called when the device receives calls or an alarm goes off. After some looking around, I heard that the old C api were deprecated and that you should move to the

AudioUnitInitialize failed with error code 1701737535 'ent?' after alarm interruption

旧城冷巷雨未停 提交于 2019-12-24 22:04:44
问题 I am working with VOIP app. The app is working fine with CallKit. I am facing an issue if alarm fires within call. Every time when alarm stop firing (Audio Interruption ends), we are trying to setActive: on AVAudioSession. But it always gives an error with code 1701737535 ie. 'ent?'. The same error occurs when I am trying to initialize Audio Unit. Without using CallKit it's working fine. Anybody faced issue with activating Audio Session when Audio Interruption ends. I am getting different

chat on assembly using serial port

五迷三道 提交于 2019-12-24 20:28:27
问题 I'm working on a chat using assembly and i got this huge doubt, I'm currently using int 21, AH= 0Ah to get a string from the keyboard wich I will later send, char by char, through the serial port, but then i was wondering how, will I receive a msg from the other computer running the same program if this one is in a interruption waiting for me to input a string. How can i get around the fact that when inputing a string, the whole program is interrupted and anything being sent on the mean time

How to programme a main function inside a GUI interface with button callbacks working as interruptions

心已入冬 提交于 2019-12-24 20:09:36
问题 Is it possible to create an interface that execute a main and the callbacks functions works as interruptions? I need an user interface that when the user push an on button the program starts to take images from a camera and then procesed them and show them on the interface. The program needs image changing on the user interface until the button on is pushed again and it interrupt the main programme that are catching and processing images Main function takes images from a camera and process

boost thread on interruption doesn't print exit message

偶尔善良 提交于 2019-12-24 01:58:20
问题 I have this piece of code for executing three threads where the second thread should get interrupted on pressing enter and print the exit message: void input_val() { // DO STUFF return; } void process_val() { // DO STUFF try{ cout << "waiting for ENTER..." << endl; boost::this_thread::sleep(boost::posix_time::milliseconds(200)); } catch(boost::thread_interrupted&){ cout << "exit process thread" << endl; return; } return; } void output_val() { // DO STUFF } int main() { char key_pressed; boost

What is the difference between wait/notify and wait/interrupt?

烈酒焚心 提交于 2019-12-19 00:33:28
问题 synchronized (Foo.class) { while (someCondition) { try { Foo.class.wait(); } catch (InterruptedException e) { e.printStackTrace(); } } } It seems that this thread both wakes when some other thread call interrupt() or notify() on this thread. Are there any differences between the two? --EDIT-- I know one is for notifying an object, the other interrupts a thread. But both of these lead to the same consequence, that is, this thread is waken up, so what I want to ask is how these 2 situations'

Firebase storage handling network interruptions when download in progress

拥有回忆 提交于 2019-12-17 19:57:48
问题 I am trying to download some files from the firebase storage. It works well when there is stable internet connection. But if the internet connection is lost while downloading the content halfway, it just keeps trying to download the content. How to detect if there are no content being downloaded? I have implemented the onProgessListener of StorageReference . However, I am not sure how to make use of it to detect if there are no progress in the download. new OnProgressListener<FileDownloadTask

Which system calls can return EINTR or EAGAIN error codes? [closed]

若如初见. 提交于 2019-12-13 11:29:52
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . Which of the following system calls can return EINTR or EAGAIN/EWOULDBLOCK? getsockname() chdir() bind() fcntl() listen() setsid() setsockopt() socket() stat() unlink() access() accept() open() usleep() dup2() fork() waitpid() wait() read() write() Some of these system calls