Masonry最近才开始使用，还是有点不是很熟悉，下面是一些使用的场景总结。
想实现如下图所示的效果：
image
黑色背景为父试图，会随着标题和内容变化而自动适应高度。
代码如下：
+ (void)makeToast:(OSSessionModel*)model dismisBlock:(AlertDismisBlock)block{
//OSSessionToastView 即为要显示的整个的弹框
OSSessionToastView*toast = [[OSSessionToastView alloc]init];
toast.backgroundColor= [UIColor darkGrayColor];
toast.layer.cornerRadius=3.0;
toast.layer.masksToBounds=YES;
toast.backgroundColor= [UIColor blackColor];
toast.alpha=1.0;
toast.model= model;
toast.alertDismisBlock= block;
//获取当前的window
UIWindow*myWindow = [OSSessionToastView getApplicationWindow];
[myWindow addSubview:toast];
[toast mas_makeConstraints:^(OSMASConstraintMaker*make) {
//只设置两个约束，屏幕居中显示
make.centerX.equalTo(myWindow);
make.centerY.equalTo(myWindow);
}];
//添加标题和内容
[toast showToast:model];
}
- (void)showToast:(OSSessionModel*)model{
self.model= model;
//添加label
[self showLabel];
//动画
[UIView animateWithDuration:1.0
delay:0.0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
self.alpha=1.0;
}completion:^(BOOL finished) {
[UIView animateWithDuration:0.5
delay:2.0
options:UIViewAnimationOptionCurveEaseIn
animations:^{
self.alpha=0.0;
}completion:^(BOOLfinished) {
[self removeFromSuperview];
}];
}];
}
- (void)showLabel{
UIWindow*myWindow = [OSSessionToastView getApplicationWindow];
//标题
UILabel*titlelabel = [[UILabel alloc] init];
titlelabel.backgroundColor= [UIColor clearColor];
titlelabel.textAlignment=NSTextAlignmentCenter;
titlelabel.font=DevSystemFontOfSize(18);
titlelabel.textColor= [UIColor whiteColor];
titlelabel.text=self.model.title;
titlelabel.numberOfLines=1;
[selfaddSubview:titlelabel];
//内容
UILabel*contentLa = [[UILabel alloc]init];
contentLa.backgroundColor= [UIColor clearColor];
contentLa.textAlignment=NSTextAlignmentCenter;
contentLa.font=DevSystemFontOfSize(15);
contentLa.textColor= [UIColor whiteColor];
contentLa.text=self.model.content;
contentLa.preferredMaxLayoutWidth= myWindow.bounds.size.width;//最大的宽度是屏幕的宽度
contentLa.numberOfLines=0;
[self addSubview:contentLa];
//标题的约束
[titlelabel mas_makeConstraints:^(OSMASConstraintMaker*make) {
make.centerX.equalTo(self);//相对于父试图 居中显示
}];
//内容的约束
[contentLamas_makeConstraints:^(OSMASConstraintMaker*make) {
make.top.equalTo(titlelabel.mas_lastBaseline).offset(15);//标题的下方15
make.centerX.equalTo(self);//在父试图中居中显示
make.left.equalTo(self);//左边和父试图对齐
make.right.equalTo(self);//右边和父试图对齐
}];
//父试图的约束
[self mas_makeConstraints:^(OSMASConstraintMaker*make) {
make.top.equalTo(titlelabel).offset(-10);//距离标题10
make.left.equalTo(contentLa);//和内容左对齐
make.right.equalTo(contentLa);//和内容右对齐
make.bottom.equalTo(contentLa).offset(10);//底部和内容距离10
}];
}
+ (UIWindow*)getApplicationWindow
{
UIWindow*window = [[UIApplicationsharedApplication]keyWindow];
if(nil==window || window.windowLevel!=UIWindowLevelNormal)
{
NSArray*windows = [[UIApplicationsharedApplication]windows];
for(UIWindow* tmpWininwindows)
{
if(tmpWin.windowLevel==UIWindowLevelNormal){
window = tmpWin;
break;
}
}
}
returnwindow;
}
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