Advaced Question：如何在UIView中以编程方式创建的一系列UILabel对象的所有迭代中获得等效功能（使用第二系列UILabel在CGIntersect中运行）？
以编程方式创建的UILabel系列的所有实例是否都具有等效标题（self.MYUILABEL）并保留等效功能？
我使用for循环以编程方式创建了一系列等效的UILabel，但只有UILabel的最后一个实例被分配了UILabel标题。
如何在UIView中以编程方式创建的一系列UILabel对象的所有迭代中获得等效功能？
目标是通过触摸将一系列UILabel移动到第二系列UILabel。
以下是我在视图中制作UILabels（作为目标区域）的方法。
for (int i=0;i<characterCount ;i++){
self.myBottomLabel=[[UILabel alloc] initWithFrame: CGRectMake((i*60.0)+10, 200.0, 50.0, 50.0)];
self.myBottomLabel.backgroundColor = [UIColor whiteColor];
self.myBottomLabel.text= [myword objectAtIndex:i];
self.myBottomLabel.userInteractionEnabled = NO;
self.myBottomLabel.tag=300+[[letterToNumber objectForKey:[myword objectAtIndex:i]] integerValue];
[self.view insertSubview: self.myBottomLabel atIndex:(500)];
}
当我尝试使用self.myBottomLabel使用CGRectIntersectsRect时，只有最后一个UILabel才能正确使用thisCGRect使用的self.myBottomLabel标题：
theReceivingCard = [self.myBottomLabel convertRect:[self.myBottomLabel frame] toView:self.view];
这几乎是所有的实现。我是否需要创建多个CGRects（我不知道该怎么做）？或者有没有找到这些UILabel的标签究竟是什么（当你在它们的顶部移动相应的UILabel时它们是互动的？）
- (void)viewDidLoad
{
[super viewDidLoad];
NSArray* myword=[NSArray arrayWithObjects:@"h",@"e",@"l",@"l",@"o",nil];
NSDictionary *letterToNumber;
letterToNumber = [NSDictionary dictionaryWithObjectsAndKeys:
@"0", @"a",
@"1", @"b",
@"2", @"c",
@"3", @"d",
@"4", @"e",
@"5", @"f",
@"6", @"g",
@"7", @"h",
@"8", @"i",
@"9", @"j",
@"10", @"k",
@"11", @"l",
@"12", @"m",
@"13", @"n",
@"14", @"o",
@"15", @"p",
@"16", @"q",
@"17", @"r",
@"18", @"s",
@"19", @"t",
@"20", @"u",
@"21", @"v",
@"22", @"w",
@"23", @"x",
@"24", @"y",
@"25", @"z",
nil];
NSUInteger characterCount = [myword count];
//moveable
for (int i=0;i<characterCount ;i++){
self.myTopLabel=[[UILabel alloc] initWithFrame: CGRectMake((i*60.0)+10, 100.0, 50.0, 50.0)];
self.myTopLabel.backgroundColor = [UIColor whiteColor];
self.myTopLabel.text= [myword objectAtIndex:i];
self.myTopLabel.userInteractionEnabled = YES;
self.myTopLabel.tag=100+[[letterToNumber objectForKey:[myword objectAtIndex:i]] integerValue];
[self.view insertSubview: self.myTopLabel atIndex:(1)];
}
//receiver
for (int i=0;i<characterCount ;i++){
self.myBottomLabel=[[UILabel alloc] initWithFrame: CGRectMake((i*60.0)+10, 200.0, 50.0, 50.0)];
self.myBottomLabel.backgroundColor = [UIColor whiteColor];
self.myBottomLabel.text= [myword objectAtIndex:i];
self.myBottomLabel.userInteractionEnabled = NO;
self.myBottomLabel.tag=300+[[letterToNumber objectForKey:[myword objectAtIndex:i]] integerValue];
[self.view insertSubview: self.myBottomLabel atIndex:(500)];
}
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint locationPoint = [[touches anyObject] locationInView:self.view];
UIView* viewYouWishToObtain = [self.view hitTest:locationPoint withEvent:event];
[[viewYouWishToObtain superview] bringSubviewToFront:viewYouWishToObtain];
if ([touch view] != viewYouWishToObtain && viewYouWishToObtain.tag >= 100 && viewYouWishToObtain.tag <= 200) {
if ([touch tapCount] == 2) {
}
return;
}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint locationPoint = [[touches anyObject] locationInView:self.view];
UIView* viewYouWishToObtain = [self.view hitTest:locationPoint withEvent:event];
if ([touch view] == viewYouWishToObtain && viewYouWishToObtain.tag >= 100 && viewYouWishToObtain.tag <= 200) {
CGPoint location = [touch locationInView:self.view];
viewYouWishToObtain.center = location;
theMovingCard = [viewYouWishToObtain convertRect:[viewYouWishToObtain frame] toView:self.view];
theReceivingCard = [self.myBottomLabel convertRect:[self.myBottomLabel frame] toView:self.view];
CGRect theZone = CGRectMake(theReceivingCard.origin.x, theReceivingCard.origin.y,theReceivingCard.size.width*2 , theReceivingCard.size.height*2);
CGRect theCard = CGRectMake(theMovingCard.origin.x, theMovingCard.origin.y,theMovingCard.size.width*2 , theMovingCard.size.height*2);
if(CGRectIntersectsRect(theCard, theZone))
{
NSLog(@"intersect");
}
return;
}
}
问题在于，在所有代码的末尾，交叉仅在最后制作的UILabel上起作用。我需要相交来处理作为接收器的所有UILabel系列。超级超级超级超级感谢提前。
答案 0 :(得分：2)
你在循环中制作了大量的标签，但是你只有一个指向你创建的最后一个标签的指针，因为你将它们全部分配给同一个属性。我对你的其余问题并不完全清楚，但我认为你应该将这些标签添加到数组中，并在进行测试等时迭代该数组。
答案 1 :(得分：0)
以下是“如何通过for循环迭代以编程方式为多个CGIntersects为UIView子集匹配创建多个CGRect值”的答案。
这是完整的文件。 它是一款支持iOS touch的纸牌游戏（如纸牌游戏）或比赛游戏（儿童教育）。
该程序制作10张牌，其中顶行必须与底行匹配。如果顶行卡的文本等同于底行卡，则CGIntersect将“点击”，您可以执行任何其他方法。
应该有一种更简单的方法来制作变量CGRect，但我找不到答案。如果有人可以弄清楚如何不使用NSMutableArray和for循环来生成CGrect代码，那么如果你愿意分享，我将非常感激。
·H
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@property NSString* currentCard;
@property NSArray* myWord;
@property NSString* myCurrentLetter;
@property NSMutableArray* myMoverMutableArray;
@property NSMutableArray* myReceiverMutableArray;
@end
的.m
#import "ViewController.h"
@interface ViewController ()
{
int myLetterTagNumber;
}
@end
@implementation ViewController
@synthesize currentCard = _currentCard;
@synthesize myWord = _myWord;
@synthesize myCurrentLetter = _myCurrentLetter;
@synthesize myMoverMutableArray = _myMoverMutableArray;
@synthesize myReceiverMutableArray = _myReceiverMutableArray;
- (void)viewDidLoad
{
[super viewDidLoad];
[self writer];
}
-(void)writer{
self.myWord=[NSArray arrayWithObjects:@"l",@"i",@"l",@"l",@"y",nil];
NSUInteger characterCount = [self.myWord count];
self.myMoverMutableArray = [NSMutableArray arrayWithCapacity:characterCount];
self.myReceiverMutableArray = [NSMutableArray arrayWithCapacity:characterCount];
//moveable
for (int i=0;i<characterCount ;i++){
UILabel*myTopLabel;
myTopLabel=[[UILabel alloc] initWithFrame: CGRectMake((i*60.0)+10, 100.0, 50.0, 50.0)];
myTopLabel.backgroundColor = [UIColor whiteColor];
myTopLabel.text= [self.myWord objectAtIndex:i];
myTopLabel.userInteractionEnabled = YES;
myTopLabel.textAlignment = UITextAlignmentCenter;
myTopLabel.tag=100+i;
[self.myMoverMutableArray addObject:[self.myWord objectAtIndex:i]];
[self.view insertSubview: myTopLabel atIndex:(100)];
}
//receiver
for (int i=0;i<characterCount ;i++){
UILabel*myBottomLabel;
myBottomLabel=[[UILabel alloc] initWithFrame: CGRectMake((i*60.0)+10, 200.0, 50.0, 50.0)];
myBottomLabel.backgroundColor = [UIColor redColor];
myBottomLabel.text= [self.myWord objectAtIndex:i];
myBottomLabel.userInteractionEnabled = YES;
myBottomLabel.textAlignment = UITextAlignmentCenter;
myBottomLabel.tag=300+i;
[self.myReceiverMutableArray addObject:[self.myWord objectAtIndex:i]];
[self.view insertSubview: myBottomLabel atIndex:(300)];
}
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint locationPoint = [[touches anyObject] locationInView:self.view];
UIView* viewYouWishToObtain = [self.view hitTest:locationPoint withEvent:event];
//clipping
[[viewYouWishToObtain superview] bringSubviewToFront:viewYouWishToObtain];
myLetterTagNumber = viewYouWishToObtain.tag;
UILabel * myTempUILabel = (UILabel*)[self.view viewWithTag:(myLetterTagNumber)];
self.myCurrentLetter = myTempUILabel.text;
NSLog (@"text: %@",myTempUILabel.text);
NSLog (@"Tag: %d",myLetterTagNumber);
if ([touch view] != viewYouWishToObtain && viewYouWishToObtain.tag >= 100 && viewYouWishToObtain.tag <= 200) {
if ([touch tapCount] == 2) {
}
return;
}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint locationPoint = [[touches anyObject] locationInView:self.view];
UIView* viewYouWishToObtain = [self.view hitTest:locationPoint withEvent:event];
if ([touch view] == viewYouWishToObtain && viewYouWishToObtain.tag >= 100 && viewYouWishToObtain.tag <= 200) {
CGPoint location = [touch locationInView:self.view];
viewYouWishToObtain.center = location;
//moving card rec
CGRect theMovingCard;
theMovingCard = [viewYouWishToObtain convertRect:[viewYouWishToObtain frame] toView:self.view];
CGRect themovingRect = CGRectMake(theMovingCard.origin.x, theMovingCard.origin.y,theMovingCard.size.width*2 , theMovingCard.size.height*2);
NSString *myTempString;
NSUInteger characterCount = [self.myWord count];
for (int i=0;i<characterCount ;i++){
myTempString= [self.myReceiverMutableArray objectAtIndex:i];
if (myTempString == self.myCurrentLetter){
UILabel * mytouchMoveUILabel = (UILabel*)[self.view viewWithTag:(i+300)];
CGRect theReceivingCard;
theReceivingCard = [mytouchMoveUILabel convertRect:[mytouchMoveUILabel frame] toView:self.view];
CGRect spaceToHitRect = CGRectMake(theReceivingCard.origin.x, theReceivingCard.origin.y,theReceivingCard.size.width*2 , theReceivingCard.size.height*2);
if(CGRectIntersectsRect(themovingRect, spaceToHitRect))
{
NSLog (@"Intersect: %d",myLetterTagNumber);
}
}//if
}//for
return;
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
// NSLog(@"3");
CGPoint locationPoint = [[touches anyObject] locationInView:self.view];
UIView* viewYouWishToObtain = [self.view hitTest:locationPoint withEvent:event];
if ([touch view] == viewYouWishToObtain && viewYouWishToObtain.tag >= 100 && viewYouWishToObtain.tag <= 200) {
return;
}
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
} else {
return YES;
}
}
@end