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React native button onpress call function

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React native button onpress call function

The following approach covers how to use the Button in react-native. For this, we are going to use the Button component. For this, we are going to use the Button component. It is basically a clickable component which is used to perform some action when clicked by the user.Now, to access the showToast function we made in the ToastModule.java, we will make a button in react-native javascript which on clicking will invoke the showToast function. This will be done by importing {NativeModule} from 'react-native' just like the following code in app.js . import React, {Component} from 'react';

This function is passed down to the Authentication screen as a prop, and then, it is set as the onPress property of the Google sign-in button. Thus, this function in the App.js file will be called when the Google sign-in button is pressed by the user. Let's write the code to sign-in the user in the onGoogleButtonPress function.

So, every time when the text gets changed this function call & update those value in state. 4. Write the button to get the entered value in username & password. 1. <Button onPress= { () => this.getValues ()} title='Get Values' />. In this way we are calling a function called getValues () to get the data inside of username & password text inputs.