---
name: "showLoading"
mode: "kit"
versionRequirements:
  - { name: "BaseKit", version: "2.0.1" }
  - { name: "@ray-js/ray", version: "0.3.23" }
platform:
  - "iOS"
  - "Android"
async: true
---

## showLoading

> [VERSION] BaseKit >= 2.0.1 | @ray-js/ray >= 0.3.23

> [PLATFORM] iOS, Android

> ⚡ **Supports Promise** — Returns a Promise when success / fail / complete callbacks are omitted.

### Description

Show a loading indicator. You must call thing.hideLoading to close it

### Parameters

| Property | Type | Required | Default | Since | Description |
| --- | --- | --- | --- | --- | --- |
| `title` | `string` | Yes | - | `2.0.1` | Message content |
| `mask` | `boolean` | No | `false` | `2.0.1` | Whether to show a transparent mask to prevent touch-through |
| `complete` | `() => void` | No | - | - | Completion callback (executed on both success and failure) |
| `success` | `() => void` | No | - | - | Callback on successful API call |
| `fail` | `(params: Object) => void` ↓see below | No | - | - | Failure callback |

#### fail callback parameters

| Property | Type | Description |
| --- | --- | --- |
| `errorMsg` | `string` | Error message |
| `errorCode` | `string \| number` | Error code |
| `innerError` | `Object` | Error extension |

##### fail(params).innerError properties

| Property | Type | Description |
| --- | --- | --- |
| `errorCode` | `string \| number` | Error extension code |
| `errorMsg` | `string` | Error extension message |


### Examples

#### Demo

```tsx
import { showLoading } from '@ray-js/ray'

// Show a loading prompt; call hideLoading to close it
showLoading({
  title: "Loading...",
  mask: true,
  success: () => console.log("Loading displayed"),
  fail: error => console.error(error),
});
```