Undefined is not an object evaluating this.state/this.props

Question

How do I bind a function outside of scope in React Native? I\'m getting the errors:

undefined is not an object evaluating this.state   

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Answer 1

not sure if this is the problem, but I think is code is wrong, and may be potentially causing your issue.

  
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specifically this line onPress={this._buttonPress().bind(this)}> you are invoking the function and binding it at the same time.

The correct way to do this would be so

onPress={this._buttonPress.bind(this)}>

this way the function will be called only onPress.