Yong He

When I have received a push notification, I am trying to set new value for badge view, but it's not working. It's value still is zero. I set the zero...

I selected a row in the frosted view controller, and it presented a navigation controller, when I dismiss this navigation controller, the frosted view controller is removed. How to keep...

I programatically init ISMViewController and set the viewControllers to a UINavigationController based view controller

1

I programatically init ISMViewController and set the viewControllers to a UINavigationController based view controller. but on the top of UINavigationBar, there are a area height as status height, is transparent....

我看代码里很多用位操作，不知道是什么意思。能解释一下么？如果能写篇文章就好了。看不懂啊。

sizeForItemAtIndexPath problem

2

I implemented the CHTCollectionViewDelegateWaterfallLayout protocol ``` - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath { Topic *topic = topics[indexPath.row]; NSLog(@"%@ height: %@", topic.topicTitle, @(size.height)); return size; } ``` But when I...

## After the contract method is sent, just return the transaction hash It seems the contract method never works. No matter how high the gas was set, it never works....

When Metamask is locked, by calling connect function, the Metamask window won't pop up.

1

How to open the Metamsk window so the user can enter the password to unlock the wallet when Metamsk is locked? ``` let web3Modal if (typeof window !== 'undefined') {...

How to connect to localhost:8545

1

What value should I put to key `network` so it can connect to localhost:8545 node with chainId:1337?

Null check operator used on a null value on clicking center add nav bar item with NavBarStyle.style17

3

Tap on the center add nav bar item, sometime this error show: `Exception caught by gesture: Null check operator used on a null value` ``` @override Widget build(BuildContext context) {...

How to pop with withNavBar true?

6

I tried to push `withNavBar:false`. ``` pushNewScreen(context, withNavBar: false, screen: LoginPage()); ``` But when I pop: `Navigator.of(context).pop();` The nav bar won't appear. So how should I pop withNavBar:true?