DownloadTask
Methods
abort
Aborts download tasks.
() => void
API Support
| API | WeChat Mini-Program | H5 | React Native |
|---|---|---|---|
| DownloadTask.abort | ✔️ | ✔️ |
offHeadersReceived
Un-listens on the HTTP Response Header event.
(callback: OffHeadersReceivedCallback) => void
| Property | Type | Description |
|---|---|---|
| callback | OffHeadersReceivedCallback | The callback function for the HTTP Response Header event. |
API Support
| API | WeChat Mini-Program | H5 | React Native |
|---|---|---|---|
| DownloadTask.offHeadersReceived | ✔️ |
offProgressUpdate
Un-listens on download progress change events.
(callback: OffProgressUpdateCallback) => void
| Property | Type | Description |
|---|---|---|
| callback | OffProgressUpdateCallback | The callback function for the download progress change event. |
API Support
| API | WeChat Mini-Program | H5 | React Native |
|---|---|---|---|
| DownloadTask.offProgressUpdate | ✔️ | ✔️ |
onHeadersReceived
Listens on HTTP Response Header event, which will be earlier than the request completion event.
(callback: OnHeadersReceivedCallback) => void
| Property | Type | Description |
|---|---|---|
| callback | OnHeadersReceivedCallback | The callback function for the HTTP Response Header event. |
API Support
| API | WeChat Mini-Program | H5 | React Native |
|---|---|---|---|
| DownloadTask.onHeadersReceived | ✔️ |
onProgressUpdate
Listens on the download progress change event.
(callback: OnProgressUpdateCallback) => void
| Property | Type | Description |
|---|---|---|
| callback | OnProgressUpdateCallback | The callback function for the download progress change event. |
API Support
| API | WeChat Mini-Program | H5 | React Native |
|---|---|---|---|
| DownloadTask.onProgressUpdate | ✔️ | ✔️ |
Parameters
OffHeadersReceivedCallback
The callback function for the HTTP Response Header event.
(res: CallbackResult) => void
| Property | Type |
|---|---|
| res | CallbackResult |
OffProgressUpdateCallback
The callback function for the download progress change event.
(res: CallbackResult) => void
| Property | Type |
|---|---|
| res | CallbackResult |
OnHeadersReceivedCallback
The callback function for the HTTP Response Header event.
(result: OnHeadersReceivedCallbackResult) => void
| Property | Type |
|---|---|
| result | OnHeadersReceivedCallbackResult |
OnProgressUpdateCallback
The callback function for the download progress change event.
(result: OnProgressUpdateCallbackResult) => void
| Property | Type |
|---|---|
| result | OnProgressUpdateCallbackResult |
OnHeadersReceivedCallbackResult
| Property | Type | Description |
|---|---|---|
| header | Record<string, any> | HTTP Response Header returned by the developer server |
OnProgressUpdateCallbackResult
| Property | Type | Description |
|---|---|---|
| progress | number | Download progress percentage |
| totalBytesWritten | number | The length of downloaded data, in bytes |
| totalBytesExpectedToWrite | number | The length of data expected to be downloaded, in bytes |
API Support
| API | WeChat Mini-Program | H5 | React Native |
|---|---|---|---|
| DownloadTask.abort | ✔️ | ✔️ | |
| DownloadTask.offHeadersReceived | ✔️ | ||
| DownloadTask.offProgressUpdate | ✔️ | ✔️ | |
| DownloadTask.onHeadersReceived | ✔️ | ||
| DownloadTask.onProgressUpdate | ✔️ | ✔️ |