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| const callbacks = []
|
| var tasks = []
|
| function onResize () {
| tasks.push(setTimeout(() => {
| tasks.forEach(task => clearTimeout(task))
| tasks.length = 0
|
| const {
| invokeCallbackHandler: invoke
| } = UniServiceJSBridge
| const {
| windowWidth,
| windowHeight,
| screenWidth,
| screenHeight
| } = uni.getSystemInfoSync()
| var landscape = Math.abs(window.orientation) === 90
| var deviceOrientation = landscape ? 'landscape' : 'portrait'
|
| callbacks.forEach(callbackId => {
| invoke(callbackId, {
| deviceOrientation,
| size: {
| windowWidth,
| windowHeight,
| screenWidth,
| screenHeight
| }
| })
| })
| }, 20))
| }
| /**
| * 监听窗口大小变化
| * @param {*} callbackId
| */
| export function onWindowResize (callbackId) {
| if (!callbacks.length) {
| window.addEventListener('resize', onResize)
| }
| callbacks.push(callbackId)
| }
| /**
| * 取消监听窗口大小变化
| * @param {*} callbackId
| */
| export function offWindowResize (callbackId) {
| // 此处和微信平台一致查询不到去掉最后一个
| callbacks.splice(callbacks.indexOf(callbackId), 1)
| if (!callbacks.length) {
| window.removeEventListener('resize', onResize)
| }
| }
|
|
