添加一个UIButton到的tableView headerView

Question

我想要一个UIButton添加到的tableView，但是当我做到以下几点：

UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frameWidth, 200)]; 

UIButton *addSource = [UIButton buttonWithType:UIButtonTypeCustom]; 
[addSource addTarget:self action:@selector(addBoard:) forControlEvents:UIControlEventTouchUpInside]; 
[addSource setImage:[UIImage imageNamed:@"addsource.png"] forState:UIControlStateNormal]; 
[addSource setBackgroundColor:[UIColor grayColor]]; 
[headerView addSubview:addSource]; 

self.tableView_.tableHeaderView = headerView; 

我没有看到一个UIButton那里。当我尝试使用UILabel时，它就在那里。为什么是这样？

Answer 1

您的addSource按钮没有任何框架。

Answer 2

使用此代码...

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section 
{ 

    UIButton *headername = [[UIButton alloc]initWithFrame:CGRectMake(20, 5, 270, 34)]; 
    headername.backgroundColor = [UIColor greenColor]; 

    UIView *headerView = [[UIView alloc] init]; 
    UIImageView *tempimage = [[UIImageView alloc]initWithFrame:CGRectMake(10, 5, 300,34)]; 
    tempimage.image = [UIImage imageNamed:@"GrayButton.png"]; 
    [headerView addSubview:tempimage]; 
    [headerView addSubview:headername]; 
    return headerView; 

} 

Answer 3

请试试这个

UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 45)];

与

UIButton *addSource = [UIButton buttonWithType:UIButtonTypeCustom];

这将在0,0显示按钮取代它标题中的点宽度100和高度45视图。 这将帮助你

Answer 4

为ur button.by设置框架ur按钮的defalult框架将是CGRectZero means.width n高度都将为零..因此设置其框架绘制在相对位置。

Answer 5

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section 
{   
    UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0,0, 320, 44)] autorelease]; 

    UIButton *addSource = [UIButton buttonWithType:UIButtonTypeRoundedRect];  
    addSource.frame = CGRectMake(80.0, 0, 160.0, 40.0); 
    [addSource setTitle:@"rep" forState:UIControlStateNormal]; 
    [addSource addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchDown];   

    [headerView addSubview:addSource]; 
    return headerView;  
} 

另外不要忘记实施。

tableView:heightForHeaderInSection: 

Answer 6

-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section 
{ 
    UIButton *name = [[UIButton alloc]initWithFrame:CGRectMake(30, 10, 120, 45)]; 
    name.backgroundColor = [UIColor greenColor]; 
    UIView *header = [[UIView alloc] init]; 
    UIImageView *image = [[UIImageView alloc]initWithFrame:CGRectMake(30, 10, 200,45)]; 
    image.image = [UIImage imageNamed:@"Button.png"]; 
    [header addSubview:image]; 
    [header addSubview:name]; 
    return header; 
}