objective-c - UIActivityViewController に AAC をアタッチすることは可能ですか?

Question

私は運がないのでこれを試しました：

        NSData *imageData = UIImageJPEGRepresentation([sight.photo valueForKey:@"image"], 0.8);

        NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

        NSString *filePath = [docsPath stringByAppendingPathComponent:@"sound.m4a"];
        NSURL *fileUrl     = [NSURL fileURLWithPath:filePath];
        NSData *aacData = [sight.sound valueForKey:@"soundrecord"];
        [aacData writeToURL:fileUrl atomically:YES];
        //    NSString *text = self.textField.text;
        NSArray *items = @[imageData, aacData];