3D touch手势,peek手势,pop手势,ios开发
/**
* 当前结果页面
*/
.h文件中加入协议
@interface SVCurrentResultViewCtrl: SVViewController <UIViewControllerPreviewingDelegate>
.m文件中写
// 判断3D Touch是否可用，可用则注册
- (void)viewDidLoad
{
[super viewDidLoad];
if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable)
{
[self registerForPreviewingWithDelegate:self sourceView:uiview];
}
}
/**
* peek手势
*/
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
viewControllerForLocation:(CGPoint)location
{
// 获取用户手势点所在cell的下标。同时判断手势点是否超出tableView响应范围。
if (![self getShouldShowRectAndIndexPathWithLocation:location])
{
return nil;
}
// 弹出视图的初始位置，sourceRect是peek触发时的高亮区域。这个区域内的View会高亮显示，其余的会模糊掉
previewingContext.sourceRect = sourceRect;
// 获取数据进行传值
UIButton *currentBtn = _buttons[selectedPath.section];
SVDetailViewCtrl *childVC = [[SVDetailViewCtrl alloc] init];
[childVC setTestId:_resultModel.testId];
[childVC setTestType:[NSString stringWithFormat:@"%ld", (long)currentBtn.tag]];
return childVC;
}
/**
* pop手势
*/
- (void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
commitViewController:(UIViewController *)viewControllerToCommit
{
UIButton *currentBtn = _buttons[selectedPath.section];
[self CellDetailClick:currentBtn
testType:[NSString stringWithFormat:@"%ld", (long)currentBtn.tag]];
}
/**
* 获取用户手势点所在cell的下标，同时判断手势点是否超出tableview的范围
*/
- (BOOL)getShouldShowRectAndIndexPathWithLocation:(CGPoint)location
{
// 坐标点的转化，
CGPoint tableLocation = [self.view convertPoint:location toView:_tableView];
selectedPath = [_tableView indexPathForRowAtPoint:tableLocation];
// 如果selctedPath是nil，则说明越界
if (!selectedPath)
{
return NO;
}
// 计算弹出视图的初始位置
sourceRect = CGRectMake (0, NavBarH + StatusBarH + selectedPath.section * FITHEIGHT (239),
kScreenW, FITHEIGHT (209));
// 如果row越界了，返回NO 不处理peek手势
return (selectedPath.section >= (_buttons.count)) ? NO : YES;
}
@end
/**
* 详情结果页面
*/
.h中
#import <UIKit/UIKit.h>
@interface SVDetailViewCtrl : SVViewController <UIPreviewActionItem>
.m中
/**
* 3D Touch 上移显示的视图
*/
- (NSArray<id<UIPreviewActionItem>> *)previewActionItems
{
// 如果testType不为空，说明是从当前结果页面跳转过来的，所以不需要显示删除
if (testType && ![testType isEqualToString:@""])
{
return nil;
}
// 实现删除当前结果功能
UIPreviewAction *delAction = [UIPreviewAction
actionWithTitle:I18N (@"Delete")
style:UIPreviewActionStyleDefault
handler:^(UIPreviewAction *_Nonnull action, UIViewController *_Nonnull previewViewController) {
SVInfo (@"删除当前结果，testId=%lld", testId);
//从数据库中删除
[_db
executeUpdate:[NSString
stringWithFormat:@"delete from SVSummaryResultModel where testId=%lld;", testId]];
//从数据库中删除
[_db
executeUpdate:[NSString
stringWithFormat:@"delete from SVDetailResultModel where testId=%lld;", testId]];
// 创建一个消息对象
NSNotification *notice =
[NSNotification notificationWithName:@"reloadResult" object:nil userInfo:nil];
//发送消息
[[NSNotificationCenter defaultCenter] postNotification:notice];
}];
//想要显示多个就定义多个 UIPreviewAction
NSArray *actions = @[delAction];
return actions;
}
@end
