[英]toggle a UIButton on the UITableView section header when table in edit mode
[英]Rotate UIButton on table section
我在一個名為extendButton的節的標題上有UIButton。 我想在按下時將其旋轉180度。
- (nullable UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
if (section == 3) {
OrderHistoryHeaderView *orderHeaderView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:@"OrderHistoryHeaderView"];
if (orderHeaderView == nil) {
orderHeaderView = [[[NSBundle mainBundle] loadNibNamed:@"OrderHistoryHeaderView" owner:self options:nil] objectAtIndex:0];
orderHeaderView.contentView.backgroundColor = [UIColor whiteColor];
[orderHeaderView.extendButton addTarget:self action:@selector(extendButtonPressed) forControlEvents:UIControlEventTouchUpInside];
}
return orderHeaderView;
}
ProductDetailHeaderView *headerView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:@"ProductDetailHeaderView"];
if (headerView == nil) {
headerView = [[[NSBundle mainBundle] loadNibNamed:@"ProductDetailHeaderView" owner:self options:nil] objectAtIndex:0];
headerView.contentView.backgroundColor = [UIColor whiteColor];
}
headerView.mainLabel.text = headerTitleArray[section];
return headerView;
}
- (void)extendButtonPressed {
if (isExtend) {
//call rotate method
[self rotateButton:sender];
//insert row
unsigned long rowCount = orderHistoryArray.count;
//show msg if no history data
if (rowCount == 0) {
[ShareFunction showSimpleAlertWithString:@"No order history data!!" inVC:self];
}
orderHistoryArray = nil;
NSMutableArray *indexPathSet = [[NSMutableArray alloc] init];
for (int i = 0 ; i < rowCount; i++) {
[indexPathSet addObject:[NSIndexPath indexPathForRow:i inSection:3]];
}
[_mainTableView beginUpdates];
[_mainTableView deleteRowsAtIndexPaths:indexPathSet withRowAnimation:UITableViewRowAnimationAutomatic];
[_mainTableView endUpdates];
} else {
//delete row
//call rotate method
[self rotateButton:sender];
orderHistoryArray = productHistoryArray;
//show msg if no history data
//if (orderHistoryArray.count == 0) {
// [ShareFunction showSimpleAlertWithString:@"No order history data!!" inVC:self];
//}
NSMutableArray *indexPathSet = [[NSMutableArray alloc] init];
for (int i = 0 ; i < orderHistoryArray.count; i++) {
[indexPathSet addObject:[NSIndexPath indexPathForRow:i inSection:3]];
}
[_mainTableView beginUpdates];
[_mainTableView insertRowsAtIndexPaths:indexPathSet withRowAnimation:UITableViewRowAnimationAutomatic];
[_mainTableView endUpdates];
}
}
我的rotateButton方法
- (void)rotateButton:(UIButton*)button {
button.transform = CGAffineTransformMakeRotation(M_PI);
}
現在,當我點擊按鈕時,它可以旋轉180度,並且該部分的tableView會展開,但是當我再次點擊時,按鈕保持不變,不會旋轉。 我在這里想念什么?
在這里,我通過傳遞參數isExtend找到了解決方案
- (void)rotateButton:(UIButton*)button isExtend:(BOOL)isExtended{
if (isExtended) {
button.transform = CGAffineTransformMakeRotation(0);
} else {
button.transform = CGAffineTransformMakeRotation(M_PI);
}
}
您的答案中的代碼有效,但是有更好的方法。
使用函數CGAffineTransformRotate,該函數將旋轉添加到現有轉換中:
button.transform = CGAffineTransformRotate(button.transform, M_PI)
接下來是為旋轉設置動畫,而不是讓按鈕跳轉到新的旋轉。 為此,您可以使用UIView
方法animateWithDuration
。
將按鈕旋轉180度的按鈕方法如下所示:
- (IBAction)buttonAction:(UIButton *)sender {
CGAffineTransform transform = sender.transform;
transform = CGAffineTransformRotate(sender.transform, M_PI);
[UIView animateWithDuration: 0.5 animations: ^{
sender.transform = transform;
}
];
}
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