May 22, 2021 ionic
$ionicPlatform is used to detect current platforms, as well as, for example, overlaying android back buttons in a PhoneGap/Cordova.
onHardwareBackButton(callback)
A platform with a hardware back button that you can bind to in this way.
| Parameters | Type | Details |
|---|---|---|
| callback |
function
|
When the event occurs, the callback function is triggered. |
offHardwareBackButton(callback)
Remove the listening event for the back button.
| Parameters | Type | Details |
|---|---|---|
| callback |
function
|
The monitor function that was originally bound. |
registerBackButtonAction(callback, priority, [actionId])
Register the hardware back button action. When a button is clicked, only one action is performed, so the method determines that the registered back button action has the highest priority.
For example, if a pull-up menu is already displayed, the back button should close the pull-up menu instead of returning a page view or closing an open model.
| Parameters | Type | Details |
|---|---|---|
| callback |
function
|
Triggered when the return button is clicked if the monitor has the highest priority. |
| priority |
number
|
Only the highest priority is executed. |
|
actionId
(Optional)
|
*
|
The id specifies this action. Default: A random and unique id. |
Return value: The function, a triggered function, will log off backButtonAction.
ready([callback])
When the device is ready, a callback function is triggered.
| Parameters | Type | Details |
|---|---|---|
|
callback
(Optional)
|
function=
|
The function that was triggered. |
Return: The promise object, which is resolved after it has been constructed successfully.