实现 UITableView (Slave) 的动态高度，它作为子视图添加到另一个具有动态高度的 UITableView (Master) 的自定义单元格中

Question

我有一个带有自定义单元格的主 UITableView。此主表视图中的单元格高度是使用自动布局约束动态计算的。现在我想在主表视图的单元格中添加从属 UITableView。请提供有关如何实现此目的的说明。 （示例项目也可能很有帮助）。

Answer 1

找到了解决办法。

#import "TableViewController.h"
#import "CustomCellTableViewCell.h"

 @interface TableViewController ()
  {
    NSMutableArray *array;
    NSString *cellID;
  }
@end


@implementation TableViewController

- (void)viewDidLoad 
{

   [super viewDidLoad];
   array = [[NSMutableArray alloc]initWithObjects:@"Hi",@"13.861970 dsdlkdksjdksksdjkljkdlsjkldsjk dsdlkdksjdksksdjkljkdlsjkldsjkdsdlkdksjdksksdjkljkdlsjkldsjkdsdlkdksjdksksdjkljkdlsjkldsjk", @"Latitude",@"100.504250", @"Longitude",@"50 kph", @"Speed",@"1000 meters", @"Altitude",@"12/04/2010", @"Date",@"05:45 PM", @"Time",@"North west", @"Course", nil];
  cellID = @"cellID";

  [self.tableView setRowHeight:UITableViewAutomaticDimension];
  [self.tableView setEstimatedRowHeight:50];
  [self.tableView registerClass:[CustomCellTableViewCell class] forCellReuseIdentifier:cellID];

}


  - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    #warning Incomplete implementation, return the number of sections
    return 1;
  }

   - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:      (NSInteger)section {
   #warning Incomplete implementation, return the number of rows
   return [array count];
   }


  - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
     CustomCellTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID forIndexPath:indexPath];
     cell.selectionStyle = UITableViewCellSelectionStyleNone;

     if (indexPath.row == 1)
     {
        [cell addTableWithText:[array objectAtIndex:indexPath.row]];
     }
     else
     {
        [cell setCellText:[array objectAtIndex:indexPath.row]];
     }
return cell;
 }

CustomCellTableViewCell 实现如下。

    #import <UIKit/UIKit.h>

     @interface CustomCellTableViewCell : UITableViewCell<UITableViewDelegate,UITableViewDataSource>
 {
    UILabel *cellLabel;
    UITableView *table;
    NSMutableArray *tableData;
 }
 -(void) setCellText:(NSString *) text;
 -(void) addTableWithText:(NSString *) text;
  @end



 #import "CustomCellTableViewCell.h"
 #import "Masonry.h"

 @implementation CustomCellTableViewCell


-(void) setCellText:(NSString *) text
 {
    if (cellLabel == nil)
    {
      cellLabel = [[UILabel alloc]init];
      [cellLabel setNumberOfLines:0];
      [cellLabel setBackgroundColor:[UIColor redColor]];
      [self addSubview:cellLabel];

      [cellLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self).with.insets(UIEdgeInsetsMake(10, 10, 10,10));
       }];
     }
    [cellLabel setText:text];
  }



-(void) addTableWithText:(NSString *) text
 {
    tableData = [[NSMutableArray alloc]initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9", nil];

if (table == nil)
{
    table = [[UITableView alloc]init];
    [table setDelegate:self];
    [table setDataSource:self];
    [table setScrollEnabled:NO];
    [table setEstimatedRowHeight:40];
    [table setRowHeight:UITableViewAutomaticDimension];
    [self addSubview:table];

    [table registerClass:[CustomCellTableViewCell class] forCellReuseIdentifier:@"cell"];

    [table mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.greaterThanOrEqualTo(self);
        make.left.equalTo(self).with.offset(10);
        make.right.equalTo(self).with.offset(-10);
        make.bottom.equalTo(self).with.offset(-10);
    }];
}
if (cellLabel == nil)
{
    cellLabel = [[UILabel alloc]init];
    [cellLabel setNumberOfLines:0];
    [cellLabel setBackgroundColor:[UIColor redColor]];
    [self addSubview:cellLabel];

    [cellLabel mas_makeConstraints:^(MASConstraintMaker *make) {

        make.top.equalTo(self).with.offset(10);
        make.left.equalTo(self).with.offset(10);
        make.right.equalTo(self).with.offset(-10);
        make.bottom.equalTo(table.mas_top).with.offset(-10);
    }];
}
else
{
    [cellLabel mas_remakeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self).with.offset(10);
        make.left.equalTo(self).with.offset(10);
        make.right.equalTo(self).with.offset(-10);
        make.bottom.equalTo(table.mas_top).with.offset(-10);
    }];
}

[cellLabel setText:text];
[table layoutIfNeeded];
CGFloat height = table.contentSize.height;

[table mas_remakeConstraints:^(MASConstraintMaker *make) {
    make.top.greaterThanOrEqualTo(self);
    make.left.equalTo(self).with.offset(10);
    make.right.equalTo(self).with.offset(-10);
    make.bottom.equalTo(self).with.offset(-10);
    make.height.equalTo([NSNumber numberWithFloat:height]);
}];
}


 -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
   {
     return 1;
   }


 -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
  {
    return [tableData count];
  }


 -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
 {
     CustomCellTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
     cell.selectionStyle = UITableViewCellSelectionStyleNone;
     [cell setCellText:[tableData objectAtIndex:indexPath.row]];
     return cell;
 }
 @end