? ? ? ?以前一直對類似聊天氣泡背景圖片拉伸的設(shè)置糾結(jié)，不管如何設(shè)置UIEdgeInsets屬性都不能正常設(shè)置犁罩，今天對以下幾種情況進行了總結(jié)齐蔽，如有需要的同學可進行參考：
項目地址：https://github.com/loverjiao0321/EdgeInsetsDemo
說明：
/**
1、UIEdgeInsets中的值都可以以像素為單位進行設(shè)置
2床估、測量凸起部分距離圖片邊緣值時含滴，若有存在圓角部分，計算時最好將圓角部分出去丐巫，如: - (void)addDialogueLeft;方法中左側(cè)凸起部分為12像素谈况，圖片額外含圓角部分8像素勺美，則UIEdgeInsets中l(wèi)eft和right值>= (12+8)計算
**/
/**
*添加左側(cè)凸起背景圖片
*/
- (void)addDialogueLeft
{
UIImageView *bgImageView = [[UIImageView alloc] initWithFrame:CGRectMake(30, dialogueCount * (kDialogueSpace + kDialogueViewHeight), 315, kDialogueViewHeight)];
UIImage *image = [UIImage imageNamed:@"dialogueLeft"];
/*該圖片尺寸為354*97
**1、凸起部分右側(cè)距離圖片左側(cè)邊緣大概為20(包括圓角部分寬度)碑韵，因此UIEdgeInsets中l(wèi)eft和right值>= 20即可.(此值若不合適繼續(xù)調(diào)大)
**2赡茸、不涉及上下距離，整體高度為97泼诱，因此UIEdgeInsets中top和bottom值<= 48即可.(此值若不合適繼續(xù)調(diào)小)
*/
UIEdgeInsets insets = UIEdgeInsetsMake(45, 20, 45, 20);
UIImage *insetImage = [image resizableImageWithCapInsets:insets];
bgImageView.image = insetImage;
[self.view addSubview:bgImageView];
dialogueCount++;
}
/**
*添加右側(cè)凸起背景圖片
*/
- (void)addDialogueRight
{
UIImageView*bgImageView = [[UIImageViewalloc]initWithFrame:CGRectMake(30,dialogueCount* (kDialogueSpace+kDialogueViewHeight),315,kDialogueViewHeight)];
UIImage*image = [UIImageimageNamed:@"dialogueRight"];
/*該圖片尺寸為354*97
**1坛掠、凸起部分左側(cè)距離圖片右側(cè)邊緣大概為20(包括圓角部分寬度)，因此UIEdgeInsets中l(wèi)eft和right值>= 20即可.(此值若不合適繼續(xù)調(diào)大)
**2治筒、不涉及上下距離屉栓，整體高度為97，因此UIEdgeInsets中top和bottom值<= 48即可.(此值若不合適繼續(xù)調(diào)小)
*/
UIEdgeInsetsinsets =UIEdgeInsetsMake(45,20,45,20);
UIImage*insetImage = [imageresizableImageWithCapInsets:insets];
bgImageView.image= insetImage;
[self.viewaddSubview:bgImageView];
}
/**
*添加左上角凸起背景圖片
*/
- (void)addDialogueTopLeft
{
UIImageView*bgImageView = [[UIImageViewalloc]initWithFrame:CGRectMake(30,dialogueCount* (kDialogueSpace+kDialogueViewHeight),315,kDialogueViewHeight)];
UIImage*image = [UIImageimageNamed:@"dialogueTopLeft"];
/*該圖片尺寸為343*106
**1耸袜、凸起部分右側(cè)距離圖片左側(cè)邊緣大概為27友多，因此UIEdgeInsets中l(wèi)eft和right值>= 27即可.(此值若不合適繼續(xù)調(diào)大)
**2、凸起部分底部圖片高度（除去凸起高度）大概為98堤框，因此UIEdgeInsets中top和bottom值<= 49即可.(此值若不合適繼續(xù)調(diào)小)
*/
UIEdgeInsetsinsets =UIEdgeInsetsMake(40,27,40,27);
UIImage*insetImage = [imageresizableImageWithCapInsets:insets];
bgImageView.image= insetImage;
[self.viewaddSubview:bgImageView];
}
/**
*添加左下角凸起背景圖片
*/
- (void)addDialogueBottomLeft
{
UIImageView*bgImageView = [[UIImageViewalloc]initWithFrame:CGRectMake(30,dialogueCount* (kDialogueSpace+kDialogueViewHeight),315,kDialogueViewHeight)];
UIImage*image = [UIImageimageNamed:@"dialogueBottomLeft"];
/*該圖片尺寸為343*106
**1域滥、凸起部分右側(cè)距離圖片左側(cè)邊緣大概為23，因此UIEdgeInsets中l(wèi)eft和right值>= 23即可.(此值若不合適繼續(xù)調(diào)大)
**2蜈抓、凸起部分底部圖片高度（除去凸起高度）大概為97启绰，因此UIEdgeInsets中top和bottom值<= 48即可.(此值若不合適繼續(xù)調(diào)小)
*/
UIEdgeInsetsinsets =UIEdgeInsetsMake(40,23,40,23);
UIImage*insetImage = [imageresizableImageWithCapInsets:insets];
bgImageView.image= insetImage;
[self.viewaddSubview:bgImageView];
}
/**
*添加右上角凸起背景圖片
*/
- (void)addDialogueTopRight
{
UIImageView*bgImageView = [[UIImageViewalloc]initWithFrame:CGRectMake(30,dialogueCount* (kDialogueSpace+kDialogueViewHeight),315,kDialogueViewHeight)];
UIImage*image = [UIImageimageNamed:@"dialogueTopRight"];
/*該圖片尺寸為343*106
**1、凸起部分左側(cè)距離圖片右側(cè)邊緣大概為22沟使，因此UIEdgeInsets中l(wèi)eft和right值>= 22即可.(此值若不合適繼續(xù)調(diào)大)
**2委可、凸起部分底部圖片高度（除去凸起高度）大概為98，因此UIEdgeInsets中top和bottom值<= 49即可.(此值若不合適繼續(xù)調(diào)小)
*/
UIEdgeInsetsinsets =UIEdgeInsetsMake(40,22,40,22);
UIImage*insetImage = [imageresizableImageWithCapInsets:insets];
bgImageView.image= insetImage;
[self.viewaddSubview:bgImageView];
}
/**
*添加右下角凸起背景圖片
*/
- (void)addDialogueBottomRight
{
UIImageView*bgImageView = [[UIImageViewalloc]initWithFrame:CGRectMake(30,dialogueCount* (kDialogueSpace+kDialogueViewHeight),315,kDialogueViewHeight)];
UIImage*image = [UIImageimageNamed:@"dialogueBottomRight"];
/*該圖片尺寸為343*106
**1腊嗡、凸起部分左側(cè)距離圖片右側(cè)邊緣大概為54着倾，因此UIEdgeInsets中l(wèi)eft和right值>= 54即可.(此值若不合適繼續(xù)調(diào)大)
**2、凸起部分底部圖片高度（除去凸起高度）大概為96燕少，因此UIEdgeInsets中top和bottom值<= 48即可.(此值若不合適繼續(xù)調(diào)小)
*/
UIEdgeInsetsinsets =UIEdgeInsetsMake(45,54,45,54);
UIImage*insetImage = [imageresizableImageWithCapInsets:insets];
bgImageView.image= insetImage;
[self.viewaddSubview:bgImageView];
}
