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iOS购物车简单实现(无动画)

iOS购物车简单实现(无动画)

作者: futur_zwl | 来源:发表于2017-08-14 14:43 被阅读0次

首先分为三种情况,分别是1.点击单个商品 2.点击商店选中该商店的所有商品 3.全选

分别创建按钮​ 单个商品的按钮的tag值为indexPath.row 商店按钮为 btn.tag = section + 10000; 全选为btn.tag = -10

//确定购物车有商品


if (shopArr.count == 0)

{

[selfshowAlertWithPoint:2

text:@"无商品"

color:ZLCYAN];

return;

}

ShoppingCarModel *mod = shopArr[indexPath.section];

carOrderListModel *lMod = mod.orderList[indexPath.row];///方便取数据

NSNumber *number =[NSNumbernumberWithInteger:indexPath.section];

NSNumber *number1 =[NSNumbernumberWithInteger:indexPath.row];

​//确定当前点击按钮有没有被选中

__blockBOOL isSelected =NO;

__blockBOOL sectionIsSelected =NO;

//数组升序排列为了解决先存下面的再存上面的 导致根据索引取值的时候会出错

NSSortDescriptor *sortDes1 = [[NSSortDescriptor alloc] initWithKey:@"a"ascending:YES];

NSMutableArray *sortDescriptors = [[NSMutableArray alloc] initWithObjects:&sortDes1 count:1];

[_selectedArr sortUsingDescriptors:sortDescriptors];

[_selectedArrenumerateObjectsUsingBlock:id _Nonnull obj, NSUInteger idx1, BOOL * _Nonnull stop

{

//单行和商店按钮 全选会是另一个值来判断​

if ([obj[@"a"] isEqualToString:[NSStringstringWithFormat:@"%@",number]])

{

NSArray *arr = obj[@"row"];

[arr enumerateObjectsUsingBlock:^(id  _Nonnull obj1, NSUInteger idx, BOOL * _Nonnull stop) {

if ([obj1[@"b"] isEqualToString:[NSStringstringWithFormat:@"%@",number1]])

{

//进到此处表示这一行刚才操作过

isSelected = YES;/// Variable is not assignable (missing __block type specifier)

}

}];

}

if ([obj[@"a"] isEqualToString:[NSStringstringWithFormat:@"%ld",button.tag - 10000]])

{

//这个区被选过

sectionIsSelected = YES;

}

}];


//当点击商店按钮的时候


if (button.tag > 9999)

{

//1.找单元格

if (sectionIsSelected)

{

[_selectedArrenumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop)

{

if ([obj[@"a"] isEqualToString:[NSStringstringWithFormat:@"%ld",button.tag - 10000]]) {

//删掉

[_selectedArrremoveObject:obj];

if (button.tag != - 10)

{

All = NO;

}

[button setImage:[UIImageimageNamed:@"nosele"] forState:UIControlStateNormal];

}

}];

}

if (!sectionIsSelected)

{

NSMutableDictionary *sectionDic = [NSMutableDictionarydictionary];

NSMutableArray *rowArr = [NSMutableArrayarray];

ShoppingCarModel *mod4 = shopArr[button.tag - 10000];

[_selectedArrenumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop)

{

if ([obj[@"a"] isEqualToString:[NSStringstringWithFormat:@"%ld",button.tag - 10000]])

{

[_selectedArrremoveObject:obj];

}

}];

for (int b = 0; b < mod4.orderList.count; b ++)

{

NSMutableDictionary *rowDic = [NSMutableDictionarydictionary];

carOrderListModel *mod5 = mod4.orderList[b];

NSString *price = [NSStringstringWithFormat:@"%f",[mod5.marketPricefloatValue] * [mod5.numfloatValue]];

[rowDic setObject:[NSStringstringWithFormat:@"%d",b] forKey:@"b"];

[rowDic setObject:price forKey:@"c"];

[rowDic setObject:mod5.cartIdforKey:@"d"];

[rowArr addObject:rowDic];

}

[sectionDic setObject:[NSStringstringWithFormat:@"%ld",(long)button.tag - 10000] forKey:@"a"];

[sectionDic setObject:rowArr forKey:@"row"];

[_selectedArraddObject:sectionDic];

//记录当前单元格的索引

[button setImage:[UIImageimageNamed:@"sele"] forState:UIControlStateNormal];

// NSLog(@"数组%@",_selectedArr);

}

[tablereloadData];

}


//当点击某个商品按钮的时候


if (button.tag > -1 && button.tag < 9999)

{

//1.找单元格

if (isSelected)

{

NSNumber *number =[NSNumbernumberWithInteger:indexPath.section];

NSNumber *number1 =[NSNumbernumberWithInteger:indexPath.row];

[_selectedArrenumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx1, BOOL * _Nonnull stop)

{

if ([obj[@"a"] isEqualToString:[NSStringstringWithFormat:@"%@",number]])

{

NSMutableArray *arr = obj[@"row"];

[arr enumerateObjectsUsingBlock:^(id  _Nonnull obj1, NSUInteger idx, BOOL * _Nonnull stop) {

if ([obj1[@"b"] isEqualToString:[NSStringstringWithFormat:@"%@",number1]])

{

//删掉

[arr removeObject:obj1];

if (button.tag != - 10)

{

All = NO;

}

}

}];

}

}];

[button setImage:[UIImageimageNamed:@"nosele"] forState:UIControlStateNormal];

[seleBtnsetImage:[UIImageimageNamed:@"nosele"] forState:UIControlStateNormal];

}

if (!isSelected)

{

if (button.tag != -10)

{

NSString *num = [NSStringstringWithFormat:@"%f",[lMod.marketPricefloatValue] * [lMod.numfloatValue]];

NSNumber *number =[NSNumbernumberWithInteger:indexPath.section];

NSNumber *numberRow =[NSNumbernumberWithInteger:indexPath.row];

NSMutableArray *rowArr = [NSMutableArrayarray];

NSMutableDictionary *sectionDic = [NSMutableDictionarydictionary];

NSMutableDictionary *rowDic = [NSMutableDictionarydictionary];

[sectionDic setObject:[NSStringstringWithFormat:@"%@",number] forKey:@"a"];

[rowDic setObject:[NSStringstringWithFormat:@"%@",numberRow] forKey:@"b"];

[rowDic setObject:num forKey:@"c"];

[rowDic setObject:lMod.cartIdforKey:@"d"];

[rowArr addObject:rowDic];

[sectionDic setObject:rowArr forKey:@"row"];

//            NSLog(@"字典%@",sectionDic);

[_selectedArraddObject:sectionDic];

//数组字典之类的存的都是对象数据类型 >>>如果遇到整数类型的可以考虑转换成NSNumber

//记录当前单元格的索引

[button setImage:[UIImageimageNamed:@"sele"] forState:UIControlStateNormal];

}

}

}


//当点击全选按钮的时候​


if (button.tag == -10)

{

//遍历记录索引的数组  如果数组里面的索引和当前点击单元格的indexPath相等

//1.找单元格

if (All)

{

//删掉

[_selectedArrremoveAllObjects];

[button setImage:[UIImageimageNamed:@"nosele"] forState:UIControlStateNormal];

All = NO;

}

else

{

All = YES;

[_selectedArrremoveAllObjects];

for (int a = 0; a < shopArr.count; a ++)

{

NSMutableDictionary *sectionDic = [NSMutableDictionarydictionary];

NSMutableArray *rowArr = [NSMutableArrayarray];

ShoppingCarModel *mod4 = shopArr[a];

for (int b = 0; b < mod4.orderList.count; b ++)

{

NSMutableDictionary *rowDic = [NSMutableDictionarydictionary];

carOrderListModel *mod5 = mod4.orderList[b];

NSString *price = [NSStringstringWithFormat:@"%f",[mod5.marketPricefloatValue] * [mod5.numfloatValue]];

[rowDic setObject:[NSStringstringWithFormat:@"%d",b] forKey:@"b"];

[rowDic setObject:price forKey:@"c"];

[rowDic setObject:mod5.cartIdforKey:@"d"];

[rowArr addObject:rowDic];

}

[sectionDic setObject:[NSStringstringWithFormat:@"%d",a] forKey:@"a"];

[sectionDic setObject:rowArr forKey:@"row"];

[_selectedArraddObject:sectionDic];

}

//记录当前单元格的索引

[button setImage:[UIImageimageNamed:@"sele"] forState:UIControlStateNormal];

// NSLog(@"数组%@",_selectedArr);

}

[tablereloadData];

}

​///执行完上面以后就可以结算价格了

priceNum = 0;

count = 0;

NSMutableString *str = [NSMutableStringstring];

[_selectedArrenumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx1, BOOL * _Nonnull stop)

{

NSArray *arr = obj[@"row"];

[arr enumerateObjectsUsingBlock:^(id  _Nonnull obj1, NSUInteger idx, BOOL * _Nonnull stop) {

//进到此处表示刚才操作过

priceNum = [obj1[@"c"] floatValue] + priceNum;

count ++;

[str insertString:[NSStringstringWithFormat:@"%@,",obj1[@"d"]] atIndex:0];

}];

}];

oneCardId = [NSStringstringWithFormat:@"%@",str];

// NSLog(@"钱数还有多少$%f",priceNum);

labPrice.text = [NSStringstringWithFormat:@"你将支付:%.2f元",priceNum];

[payBtnsetTitle:[NSStringstringWithFormat:@"结算(%lu)",(unsignedlong)count] forState:UIControlStateNormal];

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