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2014/10/15 ¤U¤È 10:04:03
iphone Programming Glossary: assetfileurlDrawing waveform with AVAssetReader http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader assetPictogramFilepath return self NSString assetFilepath self class cachedAudioFilepathForMPMediaItem item NSURL assetFileURL NSURL fileURLWithPath assetFilepath if fman fileExistsAtPath assetFilepath NSLog @ scanning cached audio data to create.. assetFilepath NSLog @ scanning cached audio data to create UIImage file @ assetFilepath lastPathComponent assetFileURL retain assetPictogramFilepath retain NSThread MCSM_performBlockInBackground ^ AVURLAsset asset AVURLAsset alloc initWithURL.. assetPictogramFilepath retain NSThread MCSM_performBlockInBackground ^ AVURLAsset asset AVURLAsset alloc initWithURL assetFileURL options nil NSData waveFormData self renderPNGAudioPictogramForAssett asset waveFormData writeToFile assetPictogramFilepath..
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