有时候自定义UITableViewCell,且cell中添加了一个UILabel,我们的目的是给该label添加一个手势。但是如果按照常规的添加方法,发现所添加的手势并不能响应。以下为解决方法:将手势添加到UITableView上。
@interface TestViewController () <UITableViewDataSource, UITableViewDelegate>
@end
@implementation TestViewController {
UITableView *contentTableView;
}
- (void)viewDidLoad
{
[super viewDidLoad];
//初始化点击手势
UITapGestureRecognizer *tagGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGesture:)];
tagGesture.numberOfTapsRequired = 1;
contentTableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];
contentTableView.dataSource = self;
contentTableView.delegate = self;
//给tableView添加手势操作
[contentTableView addGestureRecognizer:tagGesture];
}
#pragma mark - UITableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 5;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellID = @"cellID";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(50, 50, 50, 30)];
label.tag = 1;
[cell.contentView addSubview:label];
}
UILabel *label = (UILabel *)[cell.contentView viewWithTag:1];
label.text = [NSString stringWithFormat:@"text_%d", indexPath.row];
return cell;
}
#pragma mark - UITableViewDelegate
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 100.0f;
}
#pragma mark - UITapGestureRecognizer
- (void)tapGesture:(UITapGestureRecognizer *)gesture {
//获得当前手势触发的在UITableView中的坐标
CGPoint location = [gesture locationInView:contentTableView];
//获得当前坐标对应的indexPath
NSIndexPath *indexPath = [contentTableView indexPathForRowAtPoint:location];
if (indexPath) {
//通过indexpath获得对应的Cell
UITableViewCell *cell = [contentTableView cellForRowAtIndexPath:indexPath];
//获得添加到cell.contentView中的UILabel
UILabel *label = nil;
for (UIView *view in cell.contentView.subviews) {
if ([view isKindOfClass:[UILabel class]]) {
label = (UILabel *)view;
break;
}
}
//获得当前手势点击在UILabe中的坐标
CGPoint p = [gesture locationInView:label];
//看看手势点的坐标是不是在UILabel中
if (CGRectContainsPoint(label.frame, p)) {
NSLog(@"label text : %@", label.text);
}
}
}