將UIButton添加到tableView headerView

Question

我試圖將UIButton添加到tableView中，但是當我執行以下操作時：

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;

我在那里沒有看到UIButton。 當我嘗試使用UILabel時，它在那里。 為什么是這樣？

Answer 1

您的addSource按鈕沒有任何框架。

Answer 2

使用此代碼...

-(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

-(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;
}

Answer 4

請試試這個

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

替換為

UIButton *addSource = [UIButton buttonWithType:UIButtonTypeCustom];

這將在標題視圖中顯示0,0點寬度100和高度45處的按鈕。 這會幫助你

Answer 5

設置ur按鈕的框架。按ur按鈕的默認框架將為CGRectZero手段。寬度n高度都將為零。.因此將其框架設置為在相對位置繪制。

Answer 6

- (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;    
}

也不要忘記實施。

tableView:heightForHeaderInSection: