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即時通訊嘗試調整從使用MPImagePickerController使用MPMoviePlayerController捕獲的視頻縮略圖。這裏是使用何種即時通訊:調整從MPMoviePlayerController縮略圖
self.moviePlayer.contentURL = [info objectForKey:UIImagePickerControllerMediaURL];
UIImage *thumbnail = [self.moviePlayer thumbnailImageAtTime:1 timeOption:MPMovieTimeOptionNearestKeyFrame];
self.thumbnailImage = [self resizeImage:thumbnail toWidth:75.0 andHeight:75.0];
,這裏是我的大小調整方法:
- (UIImage *)resizeImage:(UIImage *)image toWidth:(float)width andHeight:(float)height {
CGSize newSize = CGSizeMake(width, height);
CGRect newRect = CGRectMake(0, 0, width, height);
UIGraphicsBeginImageContext(newSize);
[self.image drawInRect:newRect];
UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return resizedImage;
}
大小調整方法適用於在imagePicker拍攝的照片,但由於某種原因,圖像是空白的,當我用它在視頻縮略圖上。如果我不重新調整它,它看起來很好,但由於某種原因調整它調整了它。即時通訊使用在iPhone ios7和測試5S