iPhone等: how to tell if the device has a camera?

Question

版本 3.1.3(如果相关)。

这个建议现在可能有效，但将来会有效吗？

NSString *device = [UIDevice currentDevice].model;

if([device isEqualToString:@"iPhone"])

Answer 1

#define SOURCETYPE UIImagePickerControllerSourceTypeCamera

// does the device have a camera?
if ([UIImagePickerController isSourceTypeAvailable:SOURCETYPE]) {
  // if so, does that camera support video?
  NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:SOURCETYPE];
  bool isA3GS = [mediaTypes containsObject:(NSString*)kUTTypeMovie];
}