当前位置: 首页>>代码示例>>TypeScript>>正文


TypeScript expo-core.EventEmitter类代码示例

本文整理汇总了TypeScript中expo-core.EventEmitter的典型用法代码示例。如果您正苦于以下问题:TypeScript EventEmitter类的具体用法?TypeScript EventEmitter怎么用?TypeScript EventEmitter使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了EventEmitter类的9个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的TypeScript代码示例。

示例1: watchHeadingAsync

export async function watchHeadingAsync(callback: HeadingCallback): Promise<object> {
  // Check if there is already a compass event watch.
  if (headingEventSub) {
    _removeHeadingWatcher(headingId);
  }

  headingEventSub = LocationEventEmitter.addListener(
    'Exponent.headingChanged',
    ({ watchId, heading }: { watchId: string, heading: HeadingData }) => {
      const callback = watchCallbacks[watchId];
      if (callback) {
        callback(heading);
      } else {
        ExpoLocation.removeWatchAsync(watchId);
      }
    }
  );

  headingId = _getNextWatchId();
  watchCallbacks[headingId] = callback;
  await ExpoLocation.watchDeviceHeading(headingId);
  return {
    remove() {
      _removeHeadingWatcher(headingId);
    },
  };
}
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:27,代码来源:Location.ts

示例2: resolve

 ({ heading }: { heading: HeadingData }) => {
   if (heading.accuracy > 1 || tries > 5) {
     resolve(heading);
     LocationEventEmitter.removeSubscription(headingSub);
   } else {
     tries += 1;
   }
 }
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:8,代码来源:Location.ts

示例3: _removeHeadingWatcher

// Removes the compass listener and sub from JS and Native
function _removeHeadingWatcher(watchId) {
  if (!watchCallbacks[watchId]) {
    return;
  }
  delete watchCallbacks[watchId];
  ExpoLocation.removeWatchAsync(watchId);
  if (headingEventSub) {
    LocationEventEmitter.removeSubscription(headingEventSub);
    headingEventSub = null;
  }
}
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:12,代码来源:Location.ts

示例4: _removeWatcher

function _removeWatcher(watchId) {
  // Do nothing if we have already removed the subscription
  if (!watchCallbacks[watchId]) {
    return;
  }

  ExpoLocation.removeWatchAsync(watchId);
  delete watchCallbacks[watchId];
  if (Object.keys(watchCallbacks).length === 0 && deviceEventSubscription) {
    LocationEventEmitter.removeSubscription(deviceEventSubscription);
    deviceEventSubscription = null;
  }
}
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:13,代码来源:Location.ts

示例5: _maybeInitializeEmitterSubscription

function _maybeInitializeEmitterSubscription() {
  if (!deviceEventSubscription) {
    deviceEventSubscription = LocationEventEmitter.addListener(
      'Exponent.locationChanged',
      ({ watchId, location }: { watchId: string, location: LocationData }) => {
        const callback = watchCallbacks[watchId];
        if (callback) {
          callback(location);
        } else {
          ExpoLocation.removeWatchAsync(watchId);
        }
      }
    );
  }
}
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:15,代码来源:Location.ts

示例6: EventEmitter

  error: TaskError | null,
  executionInfo: {
    eventId: string,
    taskName: string,
  },
}

interface RegisteredTask {
  taskName: string,
  taskType: string,
  options: any,
}

type Task = (body: TaskBody) => void;

const eventEmitter = new EventEmitter(ExpoTaskManager);
const tasks: Map<string, Task> = new Map<string, Task>();

let isRunningDuringInitialization = true;

function _validateTaskName(taskName) {
  if (!taskName || typeof taskName !== 'string') {
    throw new TypeError('`taskName` must be a non-empty string.')
  }
}

export function defineTask(taskName: string, task: Task) {
  if (!isRunningDuringInitialization) {
    console.error(`TaskManager.defineTask must be called during initialization phase!`);
    return;
  }
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:31,代码来源:TaskManager.ts

示例7: removeAllListeners

 removeAllListeners(): void {
   this._listenerCount = 0;
   this._nativeEmitter.removeAllListeners(this._nativeEventName);
 }
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:4,代码来源:DeviceSensor.ts

示例8: removeSubscription

 removeSubscription(subscription: Subscription): void {
   this._listenerCount--;
   this._nativeEmitter.removeSubscription(subscription);
 }
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:4,代码来源:DeviceSensor.ts

示例9: addListener

 addListener(listener: Listener<M>): Subscription {
   let subscription = this._nativeEmitter.addListener(this._nativeEventName, listener);
   subscription.remove = () => this.removeSubscription(subscription);
   this._listenerCount++;
   return subscription;
 }
开发者ID:schneizel1,项目名称:usuario-interfas,代码行数:6,代码来源:DeviceSensor.ts


注:本文中的expo-core.EventEmitter类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。