知識點（陸續補充）

目錄

1、stringByAppendingPathComponent和stringByAppendingString的區別

2、解決其它手勢導致側滑返回手勢（interactivePopGestureRecognizer）失效的方法

3、改變headerView/footerView的背景顏色

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1、stringByAppendingPathComponent和stringByAppendingString的區別

     stringByAppendingString是字符串拼接，拼接路徑時要在名稱前加“/”；

     stringByAppendingPathComponent是路徑拼接，會在字符串前自動添加“/”，成爲完整路徑。

例如：

NSString *imagePath = [skinPath stringByAppendingString:[NSString stringWithFormat:@"/%@",imageName]];

NSString *imagePath = [skinPath stringByAppendingPathComponent:imageName]; NSLog(@"imagePath:%@",imagePath);

2、解決其它手勢導致側滑返回手勢（interactivePopGestureRecognizer）失效的方法

2.1 自定義手勢導致失效

[selfGestureRecognizer requireGestureRecognizerToFail:self.navigationController.interactivePopGestureRecognizer];

2.2 ScrollView導致失效

[selfScrollView.panGestureRecognizer requireGestureRecognizerToFail:self.navigationController.interactivePopGestureRecognizer];

解決方法

myGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGestureAction:)];
[myGesture requireGestureRecognizerToFail:self.navigationController.interactivePopGestureRecognizer];
[self.view addGestureRecognizer:myGesture];

3、改變headerView/footerView的背景顏色

- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(nonnull UIView *)view forSection:(NSInteger)section {
    view.tintColor = [UIColor clearColor];
}