You can obtain the information in either of the following ways:
Refer to the code snippet below.
// EntryAbility.ets
onWindowStageCreate(windowStage: window.WindowStage): void {
// Main window is created, set main page for this ability
hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate');
try {
windowStage.on('windowStageEvent', (data) => {
if (data === window.WindowStageEventType.SHOWN) {
hilog.info(0x0000, 'testTag', '%{public}s', 'window stage is shown');
} else if (data === window.WindowStageEventType.HIDDEN) {
hilog.info(0x0000, 'testTag', '%{public}s', 'window stage is hidden');
}
});
} catch (err) {
hilog.error(0x0000, 'testTag', '%{public}s', 'Failed to enable the listener for ' +
'window stage event changes. Cause:' + JSON.stringify(err));
}
windowStage.loadContent('pages/Index', (err, data) => {
if (err.code) {
hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? '');
return;
}
hilog.info(0x0000, 'testTag', 'Succeeded in loading the content. Data: %{public}s', JSON.stringify(data) ?? '');
});
}