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README.md

react-native-TouchableSetActive

Touchable component for React Native that enables more advanced styling by setting an active state. Most useful for building your own touchable/button components on top of.

Install

$ npm install react-native-touchable-set-active --save

Usage

First, require the TouchableSetActive component in your project.

var TouchableSetActive = require('react-native-touchable-set-active');

There are two different ways you can use this component. They both involve passing a value to the setActive property on TouchableSetActive.

###setActive={this} The simplest implementation is achieved by just passing this. The component will set an active state (using this.setState) on the parent component. To toggle a style, set one conditionally in the style property that is dependent on this.state.active.

class ExampleButton extends React.Component {
  constructor(props) {
    super(props);
    this.state = {};
  }
  render() {
    return(
      <TouchableSetActive
        setActive={this}
        style={[
          styles.inactiveButton,
          this.state.active && styles.activeButton,
        ]}
      >
        <Text
          style={this.state.active && styles.activeText}
        >
          Example Button
        </Text>
      </TouchableSetActive>
    );
  }
}

###setActive={function} Instead of passing this, you can provide a function. It will be called whenever the component's active state changes, with a boolean value representing the active state as the only argument.

class ExampleButton extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      active: false,
    };
  }
  render() {
    return(
      <TouchableSetActive
        setActive={(isActive) => {
          this.setState({active: isActive});
        }}
        style={[
          !this.state.active && styles.inactiveButton,
          this.state.active && styles.activeButton,
        ]}
      >
        <Text
          style={this.state.active && styles.activeText}
        >
          Example Button
        </Text>
      </TouchableSetActive>
    );
  }
}

Additional Props

TouchableSetActive is just like any other Touchable component in that it supports the following properties:

onPressIn
onPressOut
onPress
onLongPress

It also supports touchable delay properties that are (hopefully) landing in React Native core soon (via #1255):

/**
 * Delay in ms, from the release of the touch, before onPress is called.
 */
delayOnPress: React.PropTypes.number,
/**
 * Delay in ms, from the start of the touch, before onPressIn is called.
 */
delayOnPressIn: React.PropTypes.number,
/**
 * Delay in ms, from the release of the touch, before onPressOut is called.
 */
delayOnPressOut: React.PropTypes.number,
/**
 * Delay in ms, from onPressIn, before onLongPress is called.
 */
delayOnLongPress: React.PropTypes.number,

Support for delayOnLongPress is dependent on some underlying changes to the Touchable library. Unfortunately, it won't be available until those changes are committed. If you really need it now, take a look at the PR or my branch which adds this functionality. It should also be noted that until this PR lands, delayOnPressIn can be set to a maximum of 249 ms before throwing an error.

Additionally, the props delayActive and delayInactive can be used to decouple the active state from the press events.

/**
 * Delay in ms, from the start of the touch, before the active state is shown.
 */
delayActive: React.PropTypes.number,
/**
 * Delay in ms, from the start of the active state, before it becomes inactive.
 */
delayInactive: React.PropTypes.number,

License

MIT © Jeff Stout

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Touchable component for React Native that enables more advanced styling by setting an active state. Most useful for building your own touchable/button components on top of.

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