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我正在寫一個方法,基於CGRect中的觸摸位置來更改圖像和var。我目前使用一系列if語句手動反轉觸摸位置。我不相信這是一個特別有效的方法。有沒有辦法在視圖中反轉觸摸位置?
它適用於圖像變化,但對於var變化(我還沒有實現),我需要從1 - 100以+1爲增量進行縮放。
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint point = [touch locationInView: self.view];
if (CGRectContainsPoint(CGRectMake(0, 20, 117, 200), point)) {
if (point.y >= 20 && point.y <= 32) //12
imageA.image = [UIImage imageNamed:@"ChemA-15.png"];
if (point.y >= 33 && point.y <= 45)
imageA.image = [UIImage imageNamed:@"ChemA-14.png"];
if (point.y >= 46 && point.y <= 58)
imageA.image = [UIImage imageNamed:@"ChemA-13.png"];
if (point.y >= 59 && point.y <= 70)
imageA.image = [UIImage imageNamed:@"ChemA-12.png"];
if (point.y >= 71 && point.y <= 82)
imageA.image = [UIImage imageNamed:@"ChemA-11.png"];
if (point.y >= 83 && point.y <= 94)
imageA.image = [UIImage imageNamed:@"ChemA-10.png"];
if (point.y >= 95 && point.y <= 106)
imageA.image = [UIImage imageNamed:@"ChemA-9.png"];
if (point.y >= 107 && point.y <= 118)
imageA.image = [UIImage imageNamed:@"ChemA-8.png"];
if (point.y >= 119 && point.y <= 130)
imageA.image = [UIImage imageNamed:@"ChemA-7.png"];
if (point.y >= 131 && point.y <= 142)
imageA.image = [UIImage imageNamed:@"ChemA-6.png"];
if (point.y >= 143 && point.y <= 154)
imageA.image = [UIImage imageNamed:@"ChemA-5.png"];
if (point.y >= 155 && point.y <= 166)
imageA.image = [UIImage imageNamed:@"ChemA-4.png"];
if (point.y >= 167 && point.y <= 178)
imageA.image = [UIImage imageNamed:@"ChemA-3.png"];
if (point.y >= 179 && point.y <= 190)
imageA.image = [UIImage imageNamed:@"ChemA-2.png"];
if (point.y >= 191 && point.y <= 202)
imageA.image = [UIImage imageNamed:@"ChemA-1.png"];
}
}
有沒有更好的方法來做到這一點?感謝您提供的任何幫助。
哦,那是一個非常有趣的做這件事的方式。從最大值開始,然後取走位置。永遠不會想到這一點。輝煌。謝謝! – squarefrog