if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { // 相机不可用 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"您的设备不支持拍照!" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil]; [alert
show]; return; }