iOS九宫格布局

固定——宽高

- (void)initShareMenuWithChannels:(NSArray<NSNumber *> *)channels shareTitle:(NSString *)shareTitle
{
    self.frame = CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
    self.backgroundColor = [UIColor colorWithWhite:0.3 alpha:0.7];
    [self addTarget:self action:@selector(bgAction:) forControlEvents:UIControlEventTouchUpInside];
    
    UIView *menuBgView = [[UIView alloc] init];
    menuBgView.backgroundColor = CLineColor;
    [self addSubview:menuBgView];
    
    CGFloat currentY = 15;
    
    // 列数
    NSInteger column = 3;
    //CGFloat viewWidth = (SCREEN_WIDTH - (column+1)*marginX) / column;
    CGFloat viewWidth = 60;
    CGFloat viewHeight = viewWidth;

    //CGFloat marginX = 20;
    CGFloat marginX = (SCREEN_WIDTH - viewWidth*column) / (column+1);
    CGFloat marginY = 20;

    //分享的提示性标题（根据是否有标题文字传入来现实）
    if (shareTitle && shareTitle.length > 0) {
        ///选取分享方式
        UILabel *titileLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, currentY, SCREEN_WIDTH, 20)];
        titileLabel.text = shareTitle;
        titileLabel.font = [UIFont systemFontOfSize:14];
        titileLabel.textColor = [UIColor blackColor];
        titileLabel.textAlignment = NSTextAlignmentCenter;
        [menuBgView addSubview:titileLabel];
        currentY += 20;
    }
    
    UIView *tempView;
    for (int i = 0; i < channels.count; i++) {
        UIView *view = [[UIView alloc] init];
        [view showBlueLayer];
        [menuBgView addSubview:view];
        
        // view所在行
        NSInteger row = i / column;
        // view所在列
        NSInteger col = i % column;
        // positionX
        CGFloat viewX = marginX + (viewWidth+marginX)*col;
        // positionY
        CGFloat viewY = marginY + (viewHeight+marginY)*row + currentY;
        // view的frame
        view.frame = CGRectMake(viewX, viewY, viewWidth, viewHeight);
        tempView = view;
    }
    
    // 最后一行
    //currentY += ((channels.count / column) + 1) * viewHeight;
    currentY = CGRectGetMaxY(tempView.frame);
    currentY += 20;
    
    UIButton *cancelButton = [UIButton buttonWithType:UIButtonTypeSystem];
    cancelButton.backgroundColor = [UIColor whiteColor];
    cancelButton.frame = CGRectMake(17, currentY, SCREEN_WIDTH - 17*2, 45);
    [cancelButton setTitle:@"取消" forState:UIControlStateNormal];
    [cancelButton setTitleColor:COneLevelColor forState:UIControlStateNormal];
    cancelButton.titleLabel.font = [UIFont systemFontOfSize:17];
    [cancelButton addTarget:self action:@selector(cancelButtonAction:) forControlEvents:UIControlEventTouchUpInside];
    [menuBgView addSubview:cancelButton];
    
    currentY += 45;
    currentY += 20;
    menuBgView.frame = CGRectMake(0, SCREEN_HEIGHT - currentY, SCREEN_WIDTH, currentY);
}

不固定——宽高

- (void)initShareMenuWithChannels:(NSArray<NSNumber *> *)channels shareTitle:(NSString *)shareTitle
{
    self.frame = CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
    self.backgroundColor = [UIColor colorWithWhite:0.3 alpha:0.7];
    [self addTarget:self action:@selector(bgAction:) forControlEvents:UIControlEventTouchUpInside];
    
    UIView *menuBgView = [[UIView alloc] init];
    menuBgView.backgroundColor = CLineColor;
    [self addSubview:menuBgView];
    
    CGFloat currentY = 15;
    
    // 列数
    NSInteger column = 3;
    CGFloat viewWidth = (SCREEN_WIDTH - (column+1)*marginX) / column;
    CGFloat viewHeight = viewWidth;

    CGFloat marginX = 20;
    CGFloat marginY = 20;

    //分享的提示性标题（根据是否有标题文字传入来现实）
    if (shareTitle && shareTitle.length > 0) {
        ///选取分享方式
        UILabel *titileLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, currentY, SCREEN_WIDTH, 20)];
        titileLabel.text = shareTitle;
        titileLabel.font = [UIFont systemFontOfSize:14];
        titileLabel.textColor = [UIColor blackColor];
        titileLabel.textAlignment = NSTextAlignmentCenter;
        [menuBgView addSubview:titileLabel];
        currentY += 20;
    }
    
    UIView *tempView;
    for (int i = 0; i < channels.count; i++) {
        UIView *view = [[UIView alloc] init];
        [view showBlueLayer];
        [menuBgView addSubview:view];
        
        // view所在行
        NSInteger row = i / column;
        // view所在列
        NSInteger col = i % column;
        // positionX
        CGFloat viewX = marginX + (viewWidth+marginX)*col;
        // positionY
        CGFloat viewY = marginY + (viewHeight+marginY)*row + currentY;
        // view的frame
        view.frame = CGRectMake(viewX, viewY, viewWidth, viewHeight);
        tempView = view;
    }
    
    // 最后一行
    //currentY += ((channels.count / column) + 1) * viewHeight;
    currentY = CGRectGetMaxY(tempView.frame);
    currentY += 20;
    
    UIButton *cancelButton = [UIButton buttonWithType:UIButtonTypeSystem];
    cancelButton.backgroundColor = [UIColor whiteColor];
    cancelButton.frame = CGRectMake(17, currentY, SCREEN_WIDTH - 17*2, 45);
    [cancelButton setTitle:@"取消" forState:UIControlStateNormal];
    [cancelButton setTitleColor:COneLevelColor forState:UIControlStateNormal];
    cancelButton.titleLabel.font = [UIFont systemFontOfSize:17];
    [cancelButton addTarget:self action:@selector(cancelButtonAction:) forControlEvents:UIControlEventTouchUpInside];
    [menuBgView addSubview:cancelButton];
    
    currentY += 45;
    currentY += 20;
    menuBgView.frame = CGRectMake(0, SCREEN_HEIGHT - currentY, SCREEN_WIDTH, currentY);
}