demo功能:用UIimageView實現360度旋轉效果。
demo說明:iPhone6.1 測試成功。主要代碼在:FVImageSequence.m中。在touchesMoved事件中,通過替換UIimageView的image來產生旋轉效果。
demo截屏:
demo主要代碼:
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesMoved:touches withEvent:event]; UITouch *touch = [[event allTouches] anyObject]; CGPoint touchLocation = [touch locationInView:self]; int location = touchLocation.x; //根據移動偏移量,判斷旋轉的方向。 if(location < previous) current += increment; else current -= increment; previous = location; //圖片臨界點限制,在demo中的image文件夾下有所有圖片,是從不同角度拍攝的,將這些圖片依次顯示就可以實現360的旋轉效果 if(current > numberOfImages) current = 0; if(current < 0) current = numberOfImages; NSString *path = [NSString stringWithFormat:@"%@%d", prefix, current]; NSLog(@"%@", path); path = [[NSBundle mainBundle] pathForResource:path ofType:extension]; UIImage *img = [[UIImage alloc] initWithContentsOfFile:path]; //設置UIimageView的image為新的image,實現360度旋轉效果 [self setImage:img]; [img release];