Wednesday, 24 October 2018
javascript - this.setState is not a function, react native
Answer
I am aware there are similar issues but none of them helped me to fix mine.
So here is my issue.
I am working with react native and using the flux dispatcher. Dispatch and register of my app dispatcher works fine. My issue is that when I want to change/set the state inside the dispatch register function I always get the error message that this.setState() is not a function. Of course I thought this must be a binding issue then (writing in es6), so I tried all sorts of binding "this" but I still can't get it work. Has anyone any idea why?
Here is that bit of code that doesn't work:
testDispatcher() {
AppDispatcher.register( (action) => {
if ( action.action === TEST_ACTION ) {
// I tried setting state inside here
this.setState({
view: action.view
}).bind(this); // with or without this bind doesn't make a difference
// I also tried having a function outside of this function where I set the state.. this doesn't work either.
//this.updateView('home').bind(this);
console.log('dispatch register');
}
});
}
I also tried to console log "this" inside my register function and "this" does return my app class.
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