ios - 旋转后随机放置的 UILabel 大小错误
<p><p>有一个 UIVew 容器，用于随机生成、旋转并放置到此 View 中，如果我使用角度 0、90、180、270 看起来不错，但如果角度随机生成的标签看起来扩展了，这对我来说是个问题因为单词应该放置得非常接近并且没有交叉，这看起来像生成器:</p>
<pre><code>- (void) generate:(UIView *)container
words:(NSArray *)words
colors:(NSArray *)colors
minFontSize:(float)minSize
maxFontSize:(float)maxSize
rotateWords:(BOOL)rotate
useAngleRange:(BOOL)useRange
{
usingRange = useRange;
for (int i = 0; i < ; i++) {
UILabel *word_l = [ init];
word_l.font = ];
];
)]];
];
;
CGRect fr = CGRectMake(0,
0,
word_l.frame.size.width,
word_l.frame.size.height);
word_l.frame = fr;
word_l.center = CGPointMake(, );
if (rotate) {
int angleType = arc4random_uniform(2);
if (useRange) {
int angle = (angleType == 1) ? : ;
;
} else {
;
}
}
;
while () {
viewPositionMovingStep++;
;
}
}
}
- (void)placeItem:(UIView *)container :(UILabel *)word_l
{
CGRect initFr = word_l.frame;
for (int i = 1; i <= 8; i++) {
CGRect f = word_l.frame;
switch (i) {
case 1:
f.origin.x = f.origin.x + viewPositionMovingStep;
break;
case 2:
f.origin.x = f.origin.x + viewPositionMovingStep;
f.origin.y = f.origin.y + viewPositionMovingStep;
break;
case 3:
f.origin.y = f.origin.y + viewPositionMovingStep;
break;
case 4:
f.origin.x = f.origin.x - viewPositionMovingStep;
f.origin.y = f.origin.y + viewPositionMovingStep;
break;
case 5:
f.origin.x = f.origin.x - viewPositionMovingStep;
break;
case 6:
f.origin.x = f.origin.x - viewPositionMovingStep;
f.origin.y = f.origin.y - viewPositionMovingStep;
break;
case 7:
f.origin.y = f.origin.y - viewPositionMovingStep;
break;
case 8:
f.origin.x = f.origin.x + viewPositionMovingStep;
f.origin.y = f.origin.y - viewPositionMovingStep;
break;
default:
break;
}
word_l.frame = f;
if () {
word_l.frame = initFr;
} else {
viewPositionMovingStep = 0;
return;
}
}
}
-(BOOL)viewIntersectsWithAnotherView:(UIView *)container chosenView:(UIView *)chosenView
{
for(UIView *view in ){
if (!){
BOOL framePartiallyOut = !CGRectEqualToRect(CGRectIntersection(chosenView.superview.bounds, chosenView.frame), chosenView.frame);
if (usingRange) {
if( || framePartiallyOut){
return YES;
}
} else {
if(CGRectIntersectsRect(chosenView.frame, view.frame) || framePartiallyOut){
return YES;
}
}
}
}
return NO;
}
- (BOOL)view:(UIView *)view1 intersectsWith:(UIView *)view2
{
CGPoint poly1;
CGRect bounds1 = view1.bounds;
poly1 = ;
poly1 = ;
poly1 = ;
poly1 = ;
CGPoint poly2;
CGRect bounds2 = view2.bounds;
poly2 = ;
poly2 = ;
poly2 = ;
poly2 = ;
CGPoint ctl2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, ctl2)){
return YES;
}
CGPoint ctr2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, ctr2)){
return YES;
}
CGPoint cbr2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, cbr2)){
return YES;
}
CGPoint cbl2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, cbl2)){
return YES;
}
CGPoint ctl1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, ctl1)){
return YES;
}
CGPoint ctr1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, ctr1)){
return YES;
}
CGPoint cbr1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, cbr1)){
return YES;
}
CGPoint cbl1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, cbl1)){
return YES;
}
return NO;
}
-(int)getRandomNumberBetween:(int)from to:(int)to
{
return (int)from + arc4random() % (to-from+1);
}
</code></pre>
<p>这看起来正确放置标签:</p>
<p> <a href="/image/5aH6s.png" rel="noreferrer noopener nofollow"><img src="/image/5aH6s.png" alt="well transformed subviews"/></a> </p>
<p>以及这个带有随机生成角度的短词示例(范围 270-360、0-90):</p>
<p> <a href="/image/MktEq.png" rel="noreferrer noopener nofollow"><img src="/image/MktEq.png" alt="enter image description here"/></a> </p>
<p>正如您所注意到的，没有文本显示在那里，标签看起来展开并且在这种情况下交叉检查器不起作用，如果从 <code>viewDidLoad</code> 或 <code>viewDidApper</code> 这个检查器调用的函数也是如此根本不工作，我真的需要帮助，有什么想法吗？
谢谢!</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>调整大小问题是这样解决的:</p>
<pre><code>- (void)placeItem:(UIView *)container :(UILabel *)word_l
{
CGPoint initPoint = word_l.center;
for (int i = 1; i <= 8; i++) {
switch (i) {
case 1:
word_l.center = CGPointMake(word_l.center.x + viewPositionMovingStep, word_l.center.y);
break;
case 2:
word_l.center = CGPointMake(word_l.center.x + viewPositionMovingStep, word_l.center.y + viewPositionMovingStep);
break;
case 3:
word_l.center = CGPointMake(word_l.center.x, word_l.center.y + viewPositionMovingStep);
break;
case 4:
word_l.center = CGPointMake(word_l.center.x - viewPositionMovingStep, word_l.center.y + viewPositionMovingStep);
break;
case 5:
word_l.center = CGPointMake(word_l.center.x - viewPositionMovingStep, word_l.center.y);
break;
case 6:
word_l.center = CGPointMake(word_l.center.x - viewPositionMovingStep,- viewPositionMovingStep);
break;
case 7:
word_l.center = CGPointMake(word_l.center.x, word_l.center.y - viewPositionMovingStep);
break;
case 8:
word_l.center = CGPointMake(word_l.center.x + viewPositionMovingStep, word_l.center.y - viewPositionMovingStep);
break;
default:
break;
}
if () {
word_l.center = initPoint;
} else {
viewPositionMovingStep = 0;
return;
}
}
}
</code></pre>
<p>原因是:
使用transform属性时，不能通过改变frame来改变位置，必须使用center属性。</p>
<p>所以这部分已修复，但留下了与旋转 View 交叉点相关的问题，检查器无法正常工作，但在其他项目中单独测试它做得很好。</p>
<p>他来了:</p>
<pre><code>- (BOOL)view:(UIView *)view1 intersectsWith:(UIView *)view2
{
CGPoint poly1;
CGRect bounds1 = view1.bounds;
poly1 = ;
poly1 = ;
poly1 = ;
poly1 = ;
CGPoint poly2;
CGRect bounds2 = view2.bounds;
poly2 = ;
poly2 = ;
poly2 = ;
poly2 = ;
CGPoint ctl2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, ctl2)){
return YES;
}
CGPoint ctr2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, ctr2)){
return YES;
}
CGPoint cbr2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, cbr2)){
return YES;
}
CGPoint cbl2 = fromView:nil];
if (CGRectContainsPoint(view1.bounds, cbl2)){
return YES;
}
CGPoint ctl1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, ctl1)){
return YES;
}
CGPoint ctr1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, ctr1)){
return YES;
}
CGPoint cbr1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, cbr1)){
return YES;
}
CGPoint cbl1 = fromView:nil];
if (CGRectContainsPoint(view2.bounds, cbl1)){
return YES;
}
return NO;
}
</code></pre>
<p>有人想法吗？</p></p>
<p style="font-size: 20px;">关于ios - 旋转后随机放置的 UILabel 大小错误，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/38989888/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/38989888/
</a>
</p>
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