You should invoke your second function as a callback to setState, as setState happens asynchronously. Something like: this.setState({pencil:!this.state.pencil}, myFunction) However in your case since you want that function called with a parameter you’re going to have to get a bit more creative, and perhaps create your own function that calls the function in the props: … Read more
There are multiple ways of doing this, since state update is a async operation, so to update the state object, we need to use updater function with setState. 1- Simplest one: First create a copy of jasper then do the changes in that: this.setState(prevState => { let jasper = Object.assign({}, prevState.jasper); // creating copy of … Read more
setState() is usually asynchronous, which means that at the time you console.log the state, it’s not updated yet. Try putting the log in the callback of the setState() method. It is executed after the state change is complete: this.setState({ dealersOverallTotal: total }, () => { console.log(this.state.dealersOverallTotal, ‘dealersOverallTotal1’); });
I wrote this answer back in ’09 when Android was relatively new, and there were many not well established areas in Android development. I have added a long addendum at the bottom of this post, addressing some criticism, and detailing a philosophical disagreement I have with the use of Singletons rather than subclassing Application. Read … Read more