「_CMTimeGetSeconds」，符號（一個或多個）未找到架構的ARMv7 -IOS

Question

通過使用此代碼

AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:selectedVideoUrl]; 
CMTime duration = playerItem.duration; 
float seconds = CMTimeGetSeconds(duration); 
NSLog(@"duration: %.2f", seconds); 

錯誤

Undefined symbols for architecture armv7: 
    "_CMTimeGetSeconds", referenced from: 
     -[VideoUpload imagePickerController:didFinishPickingMediaWithInfo:] in VideoUpload.o 
ld: symbol(s) not found for architecture armv7 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

Answer 1

CMTime在CoreMedia.framework定義。將該框架添加到您的項目中。

看一看蘋果的CMTime reference