实现基于: iOS Masonry九宫格布局 - 一行代码实现九宫格
以后你可能会这样布局九宫格
[PYLayoutSudokuViewHandler
.create()
.setUpFixedItemSpacing(CGSizeMake(10, 10))
.setUpWarpCount(3)
.setUpFixedItemSize(CGSizeMake(w, w))
.setUpSudokuViewEdges(UIEdgeInsetsMake(15, 15, 15, 15))
layoutSudokuViewWithViews:scrollView.subviews];
注意
- @warning item自适应宽高 itemSize == CGSizeNull、或者 CGSizeZero
- @warning 拉伸fixedItemSpacing固定itemsize: 设置itemSize,不设置fixedItemSpacing
- @warning 撑开superView的宽高:
设置 itemSize 不为null,并且 fixedItemSpacing 不为null
.h
#import <Foundation/Foundation.h>
/**
实现基于: [iOS Masonry九宫格布局 - 一行代码实现九宫格](https://www.cnblogs.com/YHStar/p/5788896.html)
* @warning item自适应宽高 itemSize == CGSizeNull、或者 CGSizeZero
* @warning 拉伸fixedItemSpacing固定itemsize: 设置itemSize,不设置fixedItemSpacing
* @warning 撑开superView的宽高:
设置 itemSize 不为null,并且 fixedItemSpacing 不为null
*/
@interface PYLayoutSudokuViewHandler : NSObject
+ (PYLayoutSudokuViewHandler *(^)(void)) create;
/**
* item的宽高
* @warning 如果不设置,那么就会根据superview宽高以及fixedItemSpacing自适应
* @warning 默认为CGSizeZero
*/
@property (nonatomic,assign) CGSize fixedItemSize;
/**
* item的宽高
* @warning 如果不设置,那么就会根据superview宽高以及fixedItemSpacing自适应
* @warning 默认为CGSizeZero
*/
- (PYLayoutSudokuViewHandler *(^)(CGSize fixedItemSize)) setUpFixedItemSize;
/**
* 宫格的间距,如果宫格只有一行,则不生效
* @warning 如果不设置,则会根据itemSize与superviewSize被拉伸适应
* @warning 默认为CGSize(-1,-1)
*/
@property (nonatomic,assign) CGSize fixedItemSpacing;
/**
* 宫格的间距,如果宫格只有一行,则不生效
* @warning 如果不设置,则会根据itemSize与superviewSize被拉伸适应
* @warning 默认为CGSize(-1,-1)
*/
- (PYLayoutSudokuViewHandler *(^)(CGSize fixedItemSpacing)) setUpFixedItemSpacing;
/**
* :折行的位置,
* @warning 如果设置为3,则表示该九宫格需要布局3列
* @warning 值得一提的是,如果NSArray本身的count如果小于warpCount,则该函数会用空的UIView填充到缺失区域。
*/
@property (nonatomic,assign) NSInteger warpCount;
/**
* :折行的位置,
* @warning 如果设置为3,则表示该九宫格需要布局3列
* @warning 值得一提的是,如果NSArray本身的count如果小于warpCount,则该函数会用空的UIView填充到缺失区域。
*/
- (PYLayoutSudokuViewHandler *(^)(NSInteger warpCount)) setUpWarpCount;
/**
* 九宫格顶边距,底边距,左边距以及右边距
*/
@property (nonatomic,assign) UIEdgeInsets sudokuViewEdges;
/**
* 九宫格顶边距,底边距,左边距以及右边距
*/
- (PYLayoutSudokuViewHandler *(^)(UIEdgeInsets sudokuViewEdges)) setUpSudokuViewEdges;
/**
布局
@param viewArray 要布局的view
*/
- (void) layoutSudokuViewWithViews: (NSArray <UIView*>*)viewArray;
@end
.m
#import "PYLayoutSudokuViewHandler.h"
#import <Masonry/Masonry.h>
@implementation PYLayoutSudokuViewHandler
#pragma mark - init
+ (PYLayoutSudokuViewHandler *(^)(void))create {
return ^(void) {
PYLayoutSudokuViewHandler *handler = [[PYLayoutSudokuViewHandler alloc]init];
if (!handler) {
handler = [PYLayoutSudokuViewHandler new];
}
handler.fixedItemSize = CGSizeZero;
handler.fixedItemSpacing = CGSizeMake(-1, -1);
return handler;
};
}
#pragma mark - functions
// MARK: handle views
- (void) layoutSudokuViewWithViews: (NSArray <UIView*>*)viewArray {
if (self.fixedItemSpacing.width < 0 || self.fixedItemSpacing.height < 0) {
[self mas_distributeSudokuViews_NotFixedItemSpacing: viewArray];
}else{
[self mas_distributeSudokuViews_FixedItemSpacing:viewArray];
}
}
- (UIView *)star_commonSuperviewOfViews: (NSArray *)viewArray {
if (viewArray.count == 1) {
return ((UIView *)viewArray.firstObject).superview;
}
UIView *commonSuperview = nil;
UIView *previousView = nil;
for (id object in viewArray) {
if ([object isKindOfClass:[UIView class]]) {
UIView *view = (UIView *)object;
if (previousView) {
commonSuperview = [view mas_closestCommonSuperview:commonSuperview];
} else {
commonSuperview = view;
}
previousView = view;
}
}
NSAssert(commonSuperview, @"Can't constrain views that do not share a common superview. Make sure that all the views in this array have been added into the same view hierarchy.");
return commonSuperview;
}
- (NSArray <UIView *>*)mas_distributeSudokuViews_FixedItemSpacing: (NSArray <UIView *>*)viewArray{
CGFloat fixedItemWidth = self.fixedItemSize.width;
CGFloat fixedItemHeight = self.fixedItemSize.height;
CGFloat fixedLineSpacing = self.fixedItemSpacing.height;
CGFloat fixedInteritemSpacing = self.fixedItemSpacing.width;
NSInteger warpCount = self.warpCount;
CGFloat topSpacing = self.sudokuViewEdges.top;
CGFloat bottomSpacing = self.sudokuViewEdges.bottom;
CGFloat leadSpacing = self.sudokuViewEdges.left;
CGFloat tailSpacing = self.sudokuViewEdges.right;
if (viewArray.count < 1) {
return viewArray.copy;
}
if (warpCount < 1) {
NSAssert(false, @"warp count need to bigger than zero");
return viewArray.copy;
}
UIView *tempSuperView = [self star_commonSuperviewOfViews: viewArray];
NSArray *tempViews = viewArray.copy;
if (warpCount > viewArray.count) {
for (int i = 0; i < warpCount - viewArray.count; i++) {
UIView *tempView = [[UIView alloc] init];
[tempSuperView addSubview:tempView];
tempViews = [tempViews arrayByAddingObject:tempView];
}
}
NSInteger columnCount = warpCount;
NSInteger rowCount = tempViews.count % columnCount == 0 ? tempViews.count / columnCount : tempViews.count / columnCount + 1;
UIView *prev;
for (int i = 0; i < tempViews.count; i++) {
UIView *v = tempViews[i];
NSInteger currentRow = i / columnCount;
NSInteger currentColumn = i % columnCount;
[v mas_makeConstraints:^(MASConstraintMaker *make) {
if (prev) {
// 固定宽度
make.width.equalTo(prev);
make.height.equalTo(prev);
}
else {
// 如果写的item高宽分别是0,则表示自适应
if (fixedItemWidth) {
make.width.equalTo(@(fixedItemWidth));
}
if (fixedItemHeight) {
make.height.equalTo(@(fixedItemHeight));
}
}
// 第一行
if (currentRow == 0) {
make.top.equalTo(tempSuperView).offset(topSpacing);
}
// 最后一行
if (currentRow == rowCount - 1) {
// 如果只有一行
if (currentRow != 0 && i-columnCount >= 0) {
make.top.equalTo(((UIView *)tempViews[i-columnCount]).mas_bottom).offset(fixedLineSpacing);
}
make.bottom.equalTo(tempSuperView).offset(-bottomSpacing);
}
// 中间的若干行
if (currentRow != 0 && currentRow != rowCount - 1) {
make.top.equalTo(((UIView *)tempViews[i-columnCount]).mas_bottom).offset(fixedLineSpacing);
}
// 第一列
if (currentColumn == 0) {
make.left.equalTo(tempSuperView).offset(leadSpacing);
}
// 最后一列
if (currentColumn == columnCount - 1) {
// 如果只有一列
if (currentColumn != 0) {
make.left.equalTo(prev.mas_right).offset(fixedInteritemSpacing);
}
make.right.equalTo(tempSuperView).offset(-tailSpacing);
}
// 中间若干列
if (currentColumn != 0 && currentColumn != warpCount - 1) {
make.left.equalTo(prev.mas_right).offset(fixedInteritemSpacing);
}
}];
prev = v;
}
return tempViews;
}
- (void)mas_distributeSudokuViews_NotFixedItemSpacing: (NSArray <UIView *> *) viewArray {
CGFloat fixedItemWidth = self.fixedItemSize.width;
CGFloat fixedItemHeight = self.fixedItemSize.height;
NSInteger warpCount = self.warpCount;
CGFloat topSpacing = self.sudokuViewEdges.top;
CGFloat bottomSpacing = self.sudokuViewEdges.bottom;
CGFloat leadSpacing = self.sudokuViewEdges.left;
CGFloat tailSpacing = self.sudokuViewEdges.right;
if (viewArray.count < 2) {
NSAssert(viewArray.count>1,@"views to distribute need to bigger than one");
return;
}
if (warpCount < 1) {
NSAssert(false, @"warp count need to bigger than zero");
return;
}
UIView *tempSuperView = [self star_commonSuperviewOfViews: viewArray];
NSInteger rowCount = viewArray.count % warpCount == 0 ? viewArray.count / warpCount : viewArray.count / warpCount + 1;
UIView *prev;
for (int i = 0; i < viewArray.count; i++) {
UIView *v = viewArray[i];
// 当前行
NSInteger currentRow = i / warpCount;
// 当前列
NSInteger currentColumn = i % warpCount;
[v mas_makeConstraints:^(MASConstraintMaker *make) {
// 固定宽度
make.width.equalTo(@(fixedItemWidth));
make.height.equalTo(@(fixedItemHeight));
// 第一行
if (currentRow == 0) {
make.top.equalTo(tempSuperView).offset(topSpacing);
}
// 最后一行
if (currentRow == rowCount - 1) {
make.bottom.equalTo(tempSuperView).offset(-bottomSpacing);
}
// 中间的若干行
if (currentRow != 0 && currentRow != rowCount - 1){
CGFloat offset = (1-(currentRow/((CGFloat)rowCount-1)))*(fixedItemHeight+topSpacing)-currentRow*bottomSpacing/(((CGFloat)rowCount-1));
make.bottom.equalTo(tempSuperView).multipliedBy(currentRow/((CGFloat)rowCount-1)).offset(offset);
}
// 第一列
if (currentColumn == 0) {
make.left.equalTo(tempSuperView).offset(leadSpacing);
}
// 最后一列
if (currentColumn == warpCount - 1) {
make.right.equalTo(tempSuperView).offset(-tailSpacing);
}
// 中间若干列
if (currentColumn != 0 && currentColumn != warpCount - 1) {
CGFloat offset = (1-(currentColumn/((CGFloat)warpCount-1)))*(fixedItemWidth+leadSpacing)-currentColumn*tailSpacing/(((CGFloat)warpCount-1));
make.right.equalTo(tempSuperView).multipliedBy(currentColumn/((CGFloat)warpCount-1)).offset(offset);
}
}];
prev = v;
}
}
// MARK: handle event
// MARK: properties get && set
- (PYLayoutSudokuViewHandler *(^)(CGSize fixedItemSize)) setUpFixedItemSize {
return ^(CGSize fixedItemSize) {
self.fixedItemSize = fixedItemSize;
return self;
};
}
- (PYLayoutSudokuViewHandler *(^)(CGSize fixedItemSpacing)) setUpFixedItemSpacing {
return ^(CGSize fixedItemSpacing) {
self.fixedItemSpacing = fixedItemSpacing;
return self;
};
}
- (PYLayoutSudokuViewHandler *(^)(NSInteger warpCount)) setUpWarpCount {
return ^(NSInteger warpCount) {
self.warpCount = warpCount;
return self;
};
}
- (PYLayoutSudokuViewHandler *(^)(UIEdgeInsets sudokuViewEdges)) setUpSudokuViewEdges {
return ^(UIEdgeInsets sudokuViewEdges) {
self.sudokuViewEdges = sudokuViewEdges;
return self;
};
}
// MARK:life cycles
@end