ios - 奇怪的段控制功能发生

Question

好的，这就是正在发生的事情。如果我点击我拥有的 5 个段中的段“0”(最右边的段，因为 ios 中的段控制向右计数 0)，则第一次它会经过正确的段，即“0”。但我第二次点击它时，它认为我点击了第3段？!这很奇怪!有人可以帮我吗？这是我的代码:

        if ([[_segmentControlTableFunctions.subviews objectAtIndex:2]isSelected] )
    {
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:originalColor];

        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];
        self.tableManagement.scrollEnabled = YES;

    }else if ([[_segmentControlTableFunctions.subviews objectAtIndex:3]isSelected] ){

        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:originalColor];

        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];

    }else if ([[_segmentControlTableFunctions.subviews objectAtIndex:4]isSelected] ){

        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:originalColor];

        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];
        self.tableManagement.scrollEnabled = YES;

    }else if ([[_segmentControlTableFunctions.subviews objectAtIndex:1]isSelected] ){

        self.currentTable = @"-1";
        _firstTableForCombine = @"-1";
        _nextTable = @"-1";
        _splitTable = @"-1";
        _lastsegmentIndex = -1;
        _segmentOneClicked = false;
        _segmentTwoClicked = false;
        _segmentZeroClicked = false;

        [self.SplitForm removeFromSuperview];
        [self.roundFrameForSplit removeFromSuperview];
        [self.moveOrderToA removeFromSuperview];
        [self.moveOrderToB removeFromSuperview];


        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:originalColor];

        wait((int*)1000);
        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];
        _segmentControlTableFunctions.selectedSegmentIndex = UISegmentedControlNoSegment;

        [NSTimer scheduledTimerWithTimeInterval: 0.2
                                         target: self
                                       selector: @selector (changeToOriginalColor)
                                       userInfo: nil
                                        repeats: NO];
        self.tableManagement.scrollEnabled = YES;
    }else if ([[_segmentControlTableFunctions.subviews objectAtIndex:0]isSelected] ){
        [[_segmentControlTableFunctions.subviews objectAtIndex:0] setTintColor:originalColor];
        if(_segmentControlTableFunctions.selectedSegmentIndex == 0 && _segmentZeroClicked)
        {
            [self Normal];
        }else
        {
            [self magnify];
        }
    }

编辑代码:

        //This handles all the background color of the segment control when the user clicks on
    //one of the functions.
    if (_segmentControlTableFunctions.selectedSegmentIndex == 2 )
    {
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:originalColor];

        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];
        self.tableManagement.scrollEnabled = YES;

    }else if (_segmentControlTableFunctions.selectedSegmentIndex == 1 ){

        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:originalColor];

        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];

    }else if (_segmentControlTableFunctions.selectedSegmentIndex == 0 ){

        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:originalColor];

        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];
        self.tableManagement.scrollEnabled = YES;

    }else if (_segmentControlTableFunctions.selectedSegmentIndex == 3){

        self.currentTable = @"-1";
        _firstTableForCombine = @"-1";
        _nextTable = @"-1";
        _splitTable = @"-1";
        _lastsegmentIndex = -1;
        _segmentOneClicked = false;
        _segmentTwoClicked = false;
        _segmentZeroClicked = false;

        [self.SplitForm removeFromSuperview];
        [self.roundFrameForSplit removeFromSuperview];
        [self.moveOrderToA removeFromSuperview];
        [self.moveOrderToB removeFromSuperview];


        [[_segmentControlTableFunctions.subviews objectAtIndex:4] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:1] setTintColor:newSelectedTintColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:2] setTintColor:originalColor];
        [[_segmentControlTableFunctions.subviews objectAtIndex:3] setTintColor:originalColor];

        wait((int*)1000);
        [self removeAllTables];
        [self displayTables:[Globals sharedInstance].StartUp.Tables];
        _segmentControlTableFunctions.selectedSegmentIndex = UISegmentedControlNoSegment;

        [NSTimer scheduledTimerWithTimeInterval: 0.2
                                         target: self
                                       selector: @selector (changeToOriginalColor)
                                       userInfo: nil
                                        repeats: NO];
        self.tableManagement.scrollEnabled = YES;
    }else if ([[_segmentControlTableFunctions.subviews objectAtIndex:0]isSelected] ){
        [[_segmentControlTableFunctions.subviews objectAtIndex:0] setTintColor:originalColor];
        if(_segmentControlTableFunctions.selectedSegmentIndex == 0 && _segmentZeroClicked)
        {
            [self Normal];
            return;
        }else
        {
            [self magnify];
            return;
        }
    }

Answer 1

subview 不是静态的。我怀疑当您选择一个选项卡时， View 层次结构会发生变化(添加光泽、移动内容或其他内容)并且索引不再是您所怀疑的。正如有人评论的那样，首先留下选定的段索引。我强烈建议切换到使用选定的段索引，而不是基于 subview 中的索引。从所选索引返回的值始终是正确的。