Question

调用自定义UITableViewCell函数，但显示本机表

这是我在init函数中的代码：

self.answersTable = [[UITableView alloc]initWithFrame:CGRectMake(0, 45, 280, 500)];
self.answersTable.dataSource = self;
self.answersTable.delegate = self;

这是我在viewDidLoad函数中的代码：

[self.answersTable registerClass:[AnswerTableViewCell class] 
          forCellReuseIdentifier:CellIdentifier];

这是我的表委托函数，它被调用，并且单元格最后不是nil：

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [self.question.answers count];
}

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

    AnswerTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[AnswerTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }
    AnswerObject* answer = self.question.answers[indexPath.row];

    [cell setupAnswerTableViewCell:self.question answer:answer row:indexPath.row];

    return cell;
}

这是AnswerTableViewCell：

#import "AnswerTableViewCell.h"

@implementation AnswerTableViewCell

- (id)init
{
    self = [super init];
    if (self) {
        self.frame = CGRectMake(0, 0, 280, 77);

        self.answerLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width-20, self.frame.size.height)];
        self.answerLabel.numberOfLines = 0;
        self.answerLabel.textColor = [UIColor whiteColor];
        self.answerLabel.font = [UIFont fontWithName:@"HelveticaNeue-Medium" size:20];

        self.answerToggle = [[UIButton alloc]initWithFrame:CGRectMake(self.frame.size.width-50, 23, 30, 30)];
        self.backgroundImage = [[UIImageView alloc]initWithFrame:self.frame];

        [self addSubview:self.answerLabel];
        [self addSubview:self.answerToggle];
        [self addSubview:self.backgroundImage];    }
    return self;
}
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        self.frame = CGRectMake(0, 0, 280, 77);

        self.answerLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width-20, self.frame.size.height)];
        self.answerLabel.numberOfLines = 0;
        self.answerLabel.textColor = [UIColor whiteColor];
        self.answerLabel.font = [UIFont fontWithName:@"HelveticaNeue-Medium" size:20];

        self.answerToggle = [[UIButton alloc]initWithFrame:CGRectMake(self.frame.size.width-50, 23, 30, 30)];
        self.backgroundImage = [[UIImageView alloc]initWithFrame:self.frame];

        [self addSubview:self.answerLabel];
        [self addSubview:self.answerToggle];
        [self addSubview:self.backgroundImage];    }
    return self;
}

-(void)setupAnswerTableViewCell:(QuestionObject*)question
                         answer:(AnswerObject*)answer
                            row:(NSInteger)row{
    self.question = question;
    self.answer = answer;
    self.row = row;

    self.answerLabel.text = answer.answerText;

    [self.answerToggle addTarget:self
                          action:@selector(flip:)
                forControlEvents:UIControlEventTouchDown];


    self.answerToggle.tag = [answer.answerID intValue];

    if (self.row == 0) {
        self.backgroundImage.image = [UIImage imageNamed:@"List_Top_Item_Not_Selected_612x113px.png"];
    }
    else if (self.row == ([self.question.answers count] - 1)){
        self.backgroundImage.image = [UIImage imageNamed:@"List_Bottom_Item_Not_Selected_612x113px.png"];
    }
    else{
        self.backgroundImage.image = [UIImage imageNamed:@"List_Item_Not_Selected_612x113px.png"];
    }

}

那么，怎么了？

Answer 1

问题是：

cell = [[AnswerTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

具体来说：UITableViewCellStyleDefault

您要求它使用默认样式创建一个Cell。要么只使用[[AnswerTableViewCell alloc] init];并设置重用标识符。或者创建自己的init，它接受一个没有样式参数的重用标识符

修改

添加Cell代码后，我认为问题是您正在使用init函数添加UI元素。这些很可能被单元格UIView contentView覆盖。它是contentView您需要自定义以添加这些元素。

本文将指导您如何执行此操作并使用drawRect方法自定义UIView。

http://blog.giorgiocalderolla.com/2011/04/16/customizing-uitableviewcells-a-better-way/

Answer 2

听起来很愚蠢，为我修理它的原因是：

self.answersTable.backgroundColor = [UIColor clearColor];

调用自定义UITableViewCell函数，但会显示本机表

2 个答案: