index.js
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var Orientation = require('react-native').NativeModules.Orientation;
var DeviceEventEmitter = require('react-native').DeviceEventEmitter;
var listeners = {};
var orientationDidChangeEvent = 'orientationDidChange';
var specificOrientationDidChangeEvent = 'specificOrientationDidChange';
var id = 0;
var META = '__listener_id';
function getKey(listener) {
if (!listener.hasOwnProperty(META)) {
if (!Object.isExtensible(listener)) {
return 'F';
}
Object.defineProperty(listener, META, {
value: 'L' + ++id,
});
}
return listener[META];
};
module.exports = {
getOrientation(cb) {
Orientation.getOrientation((error,orientation) =>{
cb(error, orientation);
});
},
getSpecificOrientation(cb) {
Orientation.getSpecificOrientation((error,orientation) =>{
cb(error, orientation);
});
},
lockToPortrait() {
Orientation.lockToPortrait();
},
lockToLandscape() {
Orientation.lockToLandscape();
},
lockToLandscapeRight() {
Orientation.lockToLandscapeRight();
},
lockToLandscapeLeft() {
Orientation.lockToLandscapeLeft();
},
unlockAllOrientations() {
Orientation.unlockAllOrientations();
},
addOrientationListener(cb) {
var key = getKey(cb);
listeners[key] = DeviceEventEmitter.addListener(orientationDidChangeEvent,
(body) => {
cb(body.orientation);
});
},
removeOrientationListener(cb) {
var key = getKey(cb);
if (!listeners[key]) {
return;
}
listeners[key].remove();
listeners[key] = null;
},
addSpecificOrientationListener(cb) {
var key = getKey(cb);
listeners[key] = DeviceEventEmitter.addListener(specificOrientationDidChangeEvent,
(body) => {
cb(body.specificOrientation);
});
},
removeSpecificOrientationListener(cb) {
var key = getKey(cb);
if (!listeners[key]) {
return;
}
listeners[key].remove();
listeners[key] = null;
},
getInitialOrientation() {
return Orientation.initialOrientation;
}
}