ios - 带有背景图像的 UItableviewcells 没有填满屏幕的整个宽度？

Question

您好，我是 ios 的新手，在我的应用程序中，我创建了一个 UITableView 并为 UITableViewcell 设置了背景图片，但图片没有填满整个屏幕宽度像下面的屏幕。为什么会出现这个问题？

我的意思是 UITableViewCell 左侧和右侧间隙即将到来图像未填满整个单元格宽度。

请帮帮我

我的代码:-

#import "TableViewController.h"

@interface TableViewController ()
{
    UITableView * tableList;
    TableCell * Cell;
}

@end

@implementation TableViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    tableList = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, [[UIScreen mainScreen]bounds].size.width, [[UIScreen mainScreen]bounds].size.height) style:UITableViewStylePlain];

    tableList.delegate = self;
    tableList.dataSource = self;
    tableList.separatorStyle = UITableViewCellSeparatorStyleNone;
    [self.view addSubview:tableList];
}

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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return 10;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *simpleTableIdentifier = @"MyCell";
    Cell = (TableCell *)[tableList dequeueReusableCellWithIdentifier:simpleTableIdentifier];
    if (Cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"TableCell" owner:self options:nil];
        Cell = [nib objectAtIndex:0];
    }

    //UIImageView *imageBackground = [[UIImageView alloc] init];

    if (indexPath.row == 0) {
        Cell.backGroundImage.image =  [UIImage imageNamed:@"cell_top.png"];
    } else if (indexPath.row == 9) {
       Cell.backGroundImage.image = [UIImage imageNamed:@"cell_bottom.png"];
    } else {
       Cell.backGroundImage.image = [UIImage imageNamed:@"cell_middle.png"];
    }

    //imageBackground.contentMode = UIViewContentModeScaleToFill;
    //Cell.backgroundView = imageBackground;

    return Cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{

    return 44.0;
}

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{

    if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
        [cell setSeparatorInset:UIEdgeInsetsZero];
    }
    if ([cell respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)]) {
        [cell setPreservesSuperviewLayoutMargins:NO];
    }
    if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
        [cell setLayoutMargins:UIEdgeInsetsZero];
    }
}

@end

Answer 1

尝试将单元格的 layoutMargins 属性和 UITableView 设置为 UIEdgeInsetsZero。

- (void) viewDidLayoutSubviews {

    [super viewDidLayoutSubviews];

    tableList.layoutMargins = UIEdgeInsetsZero;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    [...]

    Cell.layoutMargins = UIEdgeInsetsZero;

    return Cell;
}

还要检查 UIImageview 的 contentMode。

Cell.backGroundImage.contentMode = UIViewContentModeScaleAspectFill;