在項(xiàng)目中想要添加一個(gè)長(zhǎng)按Cell彈出UIMenuController的功能，當(dāng)我在
tableview中添加時(shí)是可以彈出來的，然而當(dāng)在自定義cell.m文件中添加UILongPressGestureRecognizer時(shí)，可以觸發(fā)事件，但是MenuController死活不出來，搗鼓了半天無果，只好google搜索，最后發(fā)現(xiàn)忘記實(shí)現(xiàn)下面的第三個(gè)方法。下面把解決方案記錄一下。
要實(shí)現(xiàn)長(zhǎng)按彈出菜單欄需要做到以下三點(diǎn)：
1.在view（cell）或者viewController中調(diào)用-becomeFirstResponder方法；
2.你的view或者viewcontroller需要實(shí)現(xiàn) -canBecomeFirstResponder 方法,返回YES;
3.你的view或者viewcontroller需要實(shí)現(xiàn)-canPerformAction:action withSender:sender 方法來隱藏或者現(xiàn)實(shí)響應(yīng)的item；
cell中關(guān)鍵代碼展示：
1.添加longpress事件
-(instancetype)initWithStyle:(UITableViewCellStyle)style
reuseIdentifier:(NSString*)reuseIdentifier{
if(self=[super?initWithStyle:style?reuseIdentifier:reuseIdentifier])
{
[self ?addGestureRecognizer:
[[UILongPressGestureRecognizer?alloc]initWithTarget:selfaction:@selector(longTap:)]];
}
return self;
}
2.處理長(zhǎng)按事件
-(void)longTap:(UILongPressGestureRecognizer*)longRecognizer
{
if(longRecognizer.state==UIGestureRecognizerStateBegan)
{
[self becomeFirstResponder];
UIMenuController*menu=[UIMenuController?sharedMenuController];
UIMenuItem*copyItem = [[UIMenuItem?alloc]?initWithTitle:@"復(fù)制"action:@selector(copyItemClicked:)];
UIMenuItem*resendItem = [[UIMenuItem?alloc]?initWithTitle:@"轉(zhuǎn)發(fā)"action:@selector(resendItemClicked:)];
[menu ?setMenuItems:[NSArray?arrayWithObjects:copyItem,resendItem,nil]];
[menu ?setTargetRect:self.bounds?inView:self];
[menu ?setMenuVisible:YES?animated:YES];
}
}
3.實(shí)現(xiàn)默認(rèn)方法
#pragma mark處理action事件
-(BOOL)canPerformAction:(SEL)action withSender:(id)sender{
if(action ==@selector(copyItemClicked:)){
returnYES;
}else if?(action==@selector(resendItemClicked:)){
returnYES;
}
return[super?canPerformAction:action?withSender:sender];
}
#pragma mark實(shí)現(xiàn)成為第一響應(yīng)者方法
-(BOOL)canBecomeFirstResponder{
returnYES;
}
4.處理item點(diǎn)擊事件
#pragma mark method
-(void)resendItemClicked:(id)sender{
NSLog(@"轉(zhuǎn)發(fā)");
//通知代理
}
//復(fù)制到系統(tǒng)粘貼板
-(void)copyItemClicked:(id)sender{
NSLog(@"復(fù)制");
UIPasteboard*pasteBoard = [UIPasteboard generalPasteboard];
NSArray* array = [self.text componentsSeparatedByString:@":"];
pasteBoard.string= [array ?lastObject];
}
