ZTFeatureView

可以方便地为界面添加新特性指引图

##使用方法

• 添加文件ZTFeatureMaskView.h与ZTFeatureMaskView.m至工程中。

• 导入头文件：

    #import "ZTFeatureMaskView.h"
  

• 创建并显示ZTFeatureMaskView:

    - (void)showFeatures
    {
        /** 使用APP版本作为oneTimeKey,则当前版本下指引图只会显示一次 */
        NSString *oneTimeKey = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
        ZTFeatureMaskView *featureView = [[ZTFeatureMaskView alloc] initWithOneTimeKey:oneTimeKey];
        [featureView setMaskedView:[[UIApplication sharedApplication] keyWindow]];
    
        /* 给 button 添加新特性指引 */
        [featureView addTransparencyInReferenceView:self.button radius:5.0];
        [featureView addImage:[UIImage imageNamed:@"feature0"] referenceView:self.button withOuterSpacingRight:5.0f spacingBottom:-self.button.frame.size.height / 2];
    
        /* 给 rightBarButtonItem 添加新特性指引 */
        UIView *rightItemView = nil;
        if ([self.navigationItem.rightBarButtonItem respondsToSelector:@selector(view)]) {
            rightItemView = (UIView *)[self.navigationItem.rightBarButtonItem performSelector:@selector(view)];
        }
    
        if (rightItemView) {
            [featureView addTransparencyInReferenceView:rightItemView radius:5.0f];
            [featureView addImage:[UIImage imageNamed:@"feature1"] referenceView:rightItemView withOuterSpacingLeft:0.0f spacingBottom:5.0f];
        }
        
        /* 给 整个 Cell 高亮 */
        UITableViewCell *cell0 = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0]];
        if (cell0) {
            [featureView addTransparencyInReferenceView:cell0];
            [featureView addImage:[UIImage imageNamed:@"feature3"] referenceView:cell0 withOuterSpacingLeft:-cell0.frame.size.width / 2 spacingBottom:5.0f];
        }
        
        /* 在 Cell 内部高亮 */
        UITableViewCell *cell1 = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:3 inSection:0]];
        if (cell1) {
            [featureView addTransparencyInReferenceView:cell1 innerRect:CGRectMake(100.0f, 5.0f, 60.0f, 30.0f)];
            [featureView addImage:[UIImage imageNamed:@"feature2"] referenceView:cell1 withInnerSpacingLeft:5.0f spacingTop:5.0f];
        }
        
        /** 添加关闭按钮 */
        [featureView addCloseButtonWithImage:[UIImage imageNamed:@"feature4"] referenceView:cell1 withInnerSpacingLeft:100.0f spacingTop:100.0f];
        
        [featureView show];
    }