我想在选择菜单中添加自己的命令,但也保留标准的"复制"、"剪切"等命令。我使用这个:
UIMenuItem *myItem = [[UIMenuItem alloc] initWithTitle:@"My Command" action:@selector(myCommand:)];
[[UIMenuController sharedMenuController] setMenuItems:[NSArray arrayWithObjects: myItem, nil]];
但这会将我的命令添加到编辑菜单中列表的最末尾。我希望我的命令首先出现在其中。我怎样才能做到这一点?
自己解决了。这是我initWithCoder:
方法中的内容:
UIMenuItem *myCommandItem = [[UIMenuItem alloc] initWithTitle:@"My Command" action:@selector(myCommandPressed:)];
UIMenuItem *cutItem = [[UIMenuItem alloc] initWithTitle:@"Cut" action:@selector(myCut:)];
UIMenuItem *copyItem = [[UIMenuItem alloc] initWithTitle:@"Copy" action:@selector(myCopy:)];
UIMenuItem *pasteItem = [[UIMenuItem alloc] initWithTitle:@"Paste" action:@selector(myPaste:)];
UIMenuItem *selectItem = [[UIMenuItem alloc] initWithTitle:@"Select" action:@selector(mySelect:)];
UIMenuItem *selectAllItem = [[UIMenuItem alloc] initWithTitle:@"Select all" action:@selector(mySelectAll:)];
UIMenuItem *deleteItem = [[UIMenuItem alloc] initWithTitle:@"Delete" action:@selector(myDelete:)];
[[UIMenuController sharedMenuController] setMenuItems:[NSArray arrayWithObjects: myCommandItem,
cutItem, copyItem, pasteItem, selectItem, selectAllItem, deleteItem, nil]];
现在这个:
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
if (action == @selector(myCommandPressed:)) {
return YES;
}
if (action == @selector(myCut:)) {
return [super canPerformAction:@selector(cut:) withSender:sender];
}
if (action == @selector(myCopy:)) {
return [super canPerformAction:@selector(copy:) withSender:sender];
}
if (action == @selector(myPaste:)) {
return [super canPerformAction:@selector(paste:) withSender:sender];
}
if (action == @selector(mySelect:)) {
return [super canPerformAction:@selector(select:) withSender:sender];
}
if (action == @selector(mySelectAll:)) {
return [super canPerformAction:@selector(selectAll:) withSender:sender];
}
if (action == @selector(myDelete:)) {
return [super canPerformAction:@selector(delete:) withSender:sender];
}
return NO;
}
最后:
- (void) myCommandPressed: (id) sender {
NSLog(@"My Command pressed");
}
- (void) myCut: (id) sender {
[self cut:sender];
}
- (void) myCopy: (id) sender {
[self copy:sender];
}
- (void) myPaste: (id) sender {
[self paste:sender];
}
- (void) mySelect: (id) sender {
[self select:sender];
}
- (void) mySelectAll: (id) sender {
[self selectAll:sender];
}
- (void) myDelete: (id) sender {
[self delete:sender];
}