Masonry实现九宫格布局

知识点：

1.masonry

2.NSArray分类实现

NSArray+Sudoku.h


#import "MASUtilities.h"
#import "MASConstraintMaker.h"
#import "MASViewAttribute.h"
#import <Foundation/Foundation.h>NS_ASSUME_NONNULL_BEGIN@interface NSArray (Sudoku)/***  九宫格布局 固定ItemSize 可变ItemSpacing**  @param fixedItemWidth  固定宽度*  @param fixedItemHeight 固定高度*  @param warpCount       折行点*  @param topSpacing      顶间距*  @param bottomSpacing   底间距*  @param leadSpacing     左间距*  @param tailSpacing     右间距*/
- (void)mas_distributeSudokuViewsWithFixedItemWidth:(CGFloat)fixedItemWidthfixedItemHeight:(CGFloat)fixedItemHeightwarpCount:(NSInteger)warpCounttopSpacing:(CGFloat)topSpacingbottomSpacing:(CGFloat)bottomSpacingleadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing;/***  九宫格布局 可变ItemSize 固定ItemSpacing**  @param fixedLineSpacing      行间距*  @param fixedInteritemSpacing 列间距*  @param warpCount             折行点*  @param topSpacing            顶间距*  @param bottomSpacing         底间距*  @param leadSpacing           左间距*  @param tailSpacing           右间距*/
- (void)mas_distributeSudokuViewsWithFixedLineSpacing:(CGFloat)fixedLineSpacingfixedInteritemSpacing:(CGFloat)fixedInteritemSpacingwarpCount:(NSInteger)warpCounttopSpacing:(CGFloat)topSpacingbottomSpacing:(CGFloat)bottomSpacingleadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing;/***  九宫格布局 固定ItemSize 固定ItemSpacing*  可由九宫格的内容控制SuperView的大小*  如果warpCount大于[self count]，该方法将会用空白的View填充到superview中**  Sudoku Layout, has fixed item size, and fix item space*  If warp count greater than self.count, It's fill empty view to superview**  @param fixedItemWidth        固定宽度，如果设置成0，则表示自适应，If set it to zero, indicates the adaptive.*  @param fixedItemHeight       固定高度，如果设置成0，则表示自适应，If set it to zero, indicates the adaptive.*  @param fixedLineSpacing      行间距*  @param fixedInteritemSpacing 列间距*  @param warpCount             折行点*  @param topSpacing            顶间距*  @param bottomSpacing         底间距*  @param leadSpacing           左间距*  @param tailSpacing           右间距**  @return 一般情况下会返回[self copy], 如果warpCount大于[self count]，则会返回一个被空白view填充过的数组，可以让你循环调用removeFromSuperview或者干一些其他的事情;*  @return Normal will return [self copy], If warpCount bigger than [self count] , It will return a empty views filled array, you could enumerate [subview removeFromSuperview] or do other things;*/
- (NSArray *)mas_distributeSudokuViewsWithFixedItemWidth:(CGFloat)fixedItemWidthfixedItemHeight:(CGFloat)fixedItemHeightfixedLineSpacing:(CGFloat)fixedLineSpacingfixedInteritemSpacing:(CGFloat)fixedInteritemSpacingwarpCount:(NSInteger)warpCounttopSpacing:(CGFloat)topSpacingbottomSpacing:(CGFloat)bottomSpacingleadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing;
@endNS_ASSUME_NONNULL_END

NSArray+Sudoku.m


#import "NSArray+Sudoku.h"
#import "View+MASAdditions.h"@implementation NSArray (Sudoku)
- (MAS_VIEW *)star_commonSuperviewOfViews {if (self.count == 1) {return ((MAS_VIEW *)self.firstObject).superview;}MAS_VIEW *commonSuperview = nil;MAS_VIEW *previousView = nil;for (id object in self) {if ([object isKindOfClass:[MAS_VIEW class]]) {MAS_VIEW *view = (MAS_VIEW *)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;
}- (void)mas_distributeSudokuViewsWithFixedItemWidth:(CGFloat)fixedItemWidthfixedItemHeight:(CGFloat)fixedItemHeightwarpCount:(NSInteger)warpCounttopSpacing:(CGFloat)topSpacingbottomSpacing:(CGFloat)bottomSpacingleadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing {if (self.count < 2) {NSAssert(self.count>1,@"views to distribute need to bigger than one");return;}if (warpCount < 1) {NSAssert(false, @"warp count need to bigger than zero");return;}MAS_VIEW *tempSuperView = [self star_commonSuperviewOfViews];NSInteger rowCount = self.count % warpCount == 0 ? self.count / warpCount : self.count / warpCount + 1;MAS_VIEW *prev;for (int i = 0; i < self.count; i++) {MAS_VIEW *v = self[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;}
}- (void)mas_distributeSudokuViewsWithFixedLineSpacing:(CGFloat)fixedLineSpacingfixedInteritemSpacing:(CGFloat)fixedInteritemSpacingwarpCount:(NSInteger)warpCounttopSpacing:(CGFloat)topSpacingbottomSpacing:(CGFloat)bottomSpacingleadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing {[self mas_distributeSudokuViewsWithFixedItemWidth:0 fixedItemHeight:0 fixedLineSpacing:fixedLineSpacing fixedInteritemSpacing:fixedInteritemSpacing warpCount:warpCount topSpacing:topSpacing bottomSpacing:bottomSpacing leadSpacing:leadSpacing tailSpacing:tailSpacing];
}- (NSArray *)mas_distributeSudokuViewsWithFixedItemWidth:(CGFloat)fixedItemWidthfixedItemHeight:(CGFloat)fixedItemHeightfixedLineSpacing:(CGFloat)fixedLineSpacingfixedInteritemSpacing:(CGFloat)fixedInteritemSpacingwarpCount:(NSInteger)warpCounttopSpacing:(CGFloat)topSpacingbottomSpacing:(CGFloat)bottomSpacingleadSpacing:(CGFloat)leadSpacingtailSpacing:(CGFloat)tailSpacing {if (self.count < 1) {return self.copy;}if (warpCount < 1) {NSAssert(false, @"warp count need to bigger than zero");return self.copy;}MAS_VIEW *tempSuperView = [self star_commonSuperviewOfViews];NSArray *tempViews = self.copy;if (warpCount > self.count) {for (int i = 0; i < warpCount - self.count; i++) {MAS_VIEW *tempView = [[MAS_VIEW 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;MAS_VIEW *prev;for (int i = 0; i < tempViews.count; i++) {MAS_VIEW *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(((MAS_VIEW *)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(((MAS_VIEW *)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;
}
@end

需求实现：

1.固定item宽高

// 创建容器UIView *bg = [UIView new];[self.view addSubview:bg];[bg mas_makeConstraints:^(MASConstraintMaker *make) {if (@available(iOS 11.0, *)) {make.top.equalTo(self.view.mas_safeAreaLayoutGuideTop);} else {make.top.equalTo(self.view);}make.left.right.equalTo(self.view);make.height.mas_equalTo(200);}];// 创建itemsNSMutableArray *items = [NSMutableArray array];for (int i = 0; i < 9; i++) {UIButton *item = [UIButton new];item.backgroundColor = [UIColor cyanColor];[bg addSubview:item];[items addObject:item];}// 固定item宽高[items mas_distributeSudokuViewsWithFixedItemWidth:100 fixedItemHeight:50 warpCount:3 topSpacing:10 bottomSpacing:10 leadSpacing:10 tailSpacing:10];

2.固定item大小固定间隙大小九宫格大小自适应

#pragma mark - 固定item大小 固定间隙大小 九宫格大小自适应// 创建容器UIView *bg2 = [UIView new];[self.view addSubview:bg2];[bg2 mas_makeConstraints:^(MASConstraintMaker *make) {make.top.equalTo(bg.mas_bottom).offset(20);make.left.right.equalTo(self.view);}];// 创建itemsNSMutableArray *items2 = [NSMutableArray array];for (int i = 0; i < 10; i++) {UIButton *item = [UIButton new];item.backgroundColor = [UIColor yellowColor];[bg2 addSubview:item];[items2 addObject:item];}// 固定ItemSize 固定ItemSpacing[items2 mas_distributeSudokuViewsWithFixedItemWidth:80 fixedItemHeight:100 fixedLineSpacing:20 fixedInteritemSpacing:20 warpCount:3 topSpacing:10 bottomSpacing:10 leadSpacing:10 tailSpacing:10];

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