# wx.onAppShow(function callback)
Start from base library version 2.1.2. Please remaining backward compatible.
with Promise style call: Not supported
Mini Program plugin: Not supported
Listen to the Mini Program cut foreground events. This event is related to App.onShow The callback parameters of.
# parameter
# function callback
Callback Function for Mini Programs to Cut Foreground Events
# parameter
# Object res
| attribute | type | Introductions |
|---|---|---|
| path | string | Mini Programs cut the foreground path (Code packet path) |
| scene | number | Mini Program cut the front deskScene value |
| query | Object | Mini Program cut the front desk query parameter |
| shareTicket | string | Share Ticket, seeGet more forwarding information |
| referrerInfo | Object | Source information. From another little program, Official Account message template or App Returns when entering the Mini Program. Otherwise return {}。(See below for attention) |
| forwardMaterials | Array.<Object> | An array of open file information that is only carried when opened from the chat material scene (scene 1173) |
referrerInfo Structure
| attribute | type | Introductions |
|---|---|---|
| appId | string | Source Mini Program, Official Account message template or App of appId |
| extraData | Object | Source Mini Program passed data, scene = 1037 or 1038 support |
forwardMaterials Structure
| attribute | type | Introductions |
|---|---|---|
| type | string | File mimetype type type |
| name | string | file name |
| path | string | File path (url if webview) |
| size | number | file size |
# Return valid referrerInfo The scene
| Scene value | scene | AppId meaning |
|---|---|---|
| 1020 | Official Account message template profile List of page - related Mini Programs | source Official Account message template |
| 1035 | Official Account message template Custom menu | source Official Account message template |
| 1036 | App Share Message Card | Source App |
| 1037 | Mini Program open Mini Program | Source Mini Program |
| 1038 | Back from another Mini Program | Source Mini Program |
| 1043 | Official Account message template Template message | source Official Account message template |
# Be careful
Partial Version NoreferrerInfoWill return when undefinedRecommended for use options.referrerInfo && options.referrerInfo.appId To judge.