ios - 设置输出视频设置时出错

Question

output.videoSettings = [NSDictionary dictionaryWithObject:
    [NSNumber numberWithInt:kCVPixelFormatType_32BGRA]
    forKey:(id)kCVPixelBufferPixelFormatTypeKey];

我在此特定行上收到此错误

No known class method for selector "dictionaryWithObject:forKey:

任何原因导致此错误？

Answer 1

尝试这个:

videoOutput.videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithUnsignedInt:kCVPixelFormatType_32BGRA], (id)kCVPixelBufferPixelFormatTypeKey,
                             nil];