有些时候为了项目的需求需要（在一张广告的图片中，点击不同的区域，需要响应不同的操作）那么我们可以创建一个UIImageView,然后通过UIResponder的相关方法，获取当前的点击区域，通过判断分别处理事件。具体代码如下：
由于UIView继承UIResponder类，可以通过实现如下方法，来获取点击区域操作。
-(void)touchesBegan:(NSSet )touches withEvent:(nullable UIEvent )event
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| - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event
{
[touches enumerateObjectsUsingBlock:^(UITouch * _Nonnull obj, BOOL * _Nonnull stop) {
if (obj.view == self) {
CGPoint touchPoint = [obj locationInView:self];
NSInteger index = [self locationJugement:touchPoint];
#ifdef DEBUG
NSLog(@"touchPoint....:%@",NSStringFromCGPoint(touchPoint));
#endif
if (self.delegate && [self.delegate respondsToSelector:@selector(tapEventOption:)]&& index >= 0) {
[self.delegate tapEventOption:[self.hotSpotAdsArray safeObjectAtIndex:index]];
}
*stop = YES;
}
}];
}
- (NSInteger)locationJugement:(CGPoint)point
{
__block NSInteger returnIndex = -1;//默认为－1
[self.hotSpotAdsArray enumerateObjectsUsingBlock:^(BBHotspotModel * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
#ifdef DEBUG
NSLog(@"obj.rect...:%@",obj.rect);
#endif
if ([obj.rect count] >= 4) {//防止越界
CGFloat orgX = [[obj.rect objectAtIndex:0] floatValue];
CGFloat orgY = [[obj.rect objectAtIndex:1] floatValue];
CGFloat width = [[obj.rect objectAtIndex:2] floatValue];
CGFloat height = [[obj.rect objectAtIndex:3] floatValue];
if ( (point.x > orgX && point.x < orgX + width) && (point.y > orgY && point.y < orgY + height)) {
returnIndex = idx;
*stop = YES;
}
}
}];
return returnIndex;
}
@end
|
可以通过以下方法测试：
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| - (void)createTestModelArray
{
NSMutableArray *tempArray = [NSMutableArray arrayWithCapacity:4];
for (NSInteger j = 0; j < 4; j++) {
NSArray *array = [[NSArray alloc] init];
BBHotspotModel *mode = [[BBHotspotModel alloc] init];
for (NSInteger i = 0; i < 4; i++) {
NSInteger hang = ((j%2 == 0) ? j/2:(j/2));
NSInteger lei = ((j%2 == 0) ? 0:1);
CGFloat orgX = lei * (SCREEN_WIDTH/2.0);
CGFloat orgY = hang * (200/2.0);
array = [NSArray arrayWithObjects:@(orgX),@(orgY),@(SCREEN_WIDTH/2.0),@(200/2.0),nil];
}
mode.rect = array;
mode.target = [NSString stringWithFormat:@"跳转%ld",j];
[tempArray addObject:mode];
}
self.hotspotArray = [NSMutableArray arrayWithObjects:tempArray,nil];
}
|
经过测试发现，根据给定每一个特定区域,点击操作实现相关委托即可。