I want to show alert dialog when pressing back button. But I'm facing a problem.
This is my code:
BackHanlder{
AlertDialogComponent()
}
And I got this error:
#composable invocations can only happen from the context of an
#composable function
Any help?
To show alert dialog you have to keep the boolean value as state, and change it in back handler
var showAlertDialog by remember { mutableStateOf(false)}
BackHandler {
showAlertDialog = true
}
if(showAlertDialog){
AlertDialog(//)
}
Related
When I used third party SCLAlertView there was a problem actually there is a problem that is I want to perform some action when the button will pressed but there is just the customization properties but I am wondering for the action scope can someone help me out?
you can use this
let appearance = SCLAlertView.SCLAppearance(
showCloseButton: false // if you dont want the close button use false
)
let alertView = SCLAlertView(appearance: appearance)
alertView.addButton("Ok Pressed") {
print("Ok button tapped")
}
alertView.showSuccess("Success", subTitle: "")
you get the detail example for add buttons and hide default close buttons property in SCLAlertView
I never used this library, however if we take a look at the Github repo of the project (https://github.com/vikmeup/SCLAlertView-Swift) we will see the following example:
alert.addButton("Show Name") {
print("Text value: \(txt.text)")
}
Where print("Text value: \(txt.text)") gets executed after clicking the button.
I'm facing this weird problem in UIAutomation.
I am checking an alert. In that, I am trying to log alert title and alert message. My code for this is:
UIATarget.onAlert = function onAlert(alert) {
UIALogger.logMessage("alert Shown");
UIALogger.logMessage(frontApp.alert().name());
UIALogger.logMessage(frontApp.alert().staticTexts()[1].value());
}
var target = UIATarget.localTarget().frontMostApp().mainWindow();
target.scrollViews()[0].buttons()["saveB"].tap();
UIATarget.localTarget().delay(2);
I am not tapping on cancel button in the alert to dismiss it. But, it is getting tapped automatically. I don't know why. Even in the logMessages, I see
target.frontMostApp().alert().cancelButton().tap()
this line getting executed automatically. I don't have this line anywhere in my script file. Is it a bug in iOS?
The cancel button on an alert is always tapped to keep the application from blocking unless the onAlert callback returns true. By returning true, you are telling the alert handling mechanism that you will handle tapping the appropriate button to dismiss the alert.
Change your alert callback to look like this:
UIATarget.onAlert = function onAlert(alert) {
UIALogger.logMessage("alert Shown");
UIALogger.logMessage(frontApp.alert().name());
UIALogger.logMessage(frontApp.alert().staticTexts()[1].value());
return true; // <-- Adding this line
}
Conversely, returning false or leaving out a return value altogether signals to the alert handling mechanism that the cancel button should be tapped.
I am dealing with KeywordFilterField which is populated with the list of the countries. Now the problem i am facing is that when i click the particular country it should move to the next screen as I have written the pushScreen code in the trackwheelClick event after checking that _keywordFilterField is focusable or not, but this is not the case. The Menu opens when trackwheelClick event is fired, at the center of the screen, rather than moving onto the next screen.Can anybody have the idea why Menu dialog opens on the trackwheelclick event instead of going to the next screen.
See what i have done on trackwheel click event:
protected boolean trackwheelClick(int status, int time) {
if (_keywordFilterField.isFocus()) {
int index = _keywordFilterField.getSelectedIndex();
ReadableList readableList = _keywordFilterField.getResultList();
Object selectedCountry = readableList.getAt(index);
String countryName=selectedCountry.toString();
urlutf8Encoder=new URLUTF8Encoder();
String newCountry=urlutf8Encoder.encode(countryName);
pushToSearchResult(newCountry,countryName);//To Next SCreen
return true;
}
return false;
}
But it looks like:
The trackwheelClick event returns a boolean that indicates whether the event is consumed. Once an event is consumed, it stops propagating to other UI elements. If you return true, the menu will stop appearing.
Here I am display push notification in globalscreen in blackberry, I need to push screen by clicking OK button of the dialog. I want to start app by clicking the ok button.
Please help me.
Thanks in advance!
I'm not 100% sure I understand what you want, but if this doesn't work, just add a comment and I'll try to give you a better answer.
First, read this on pushing global screens
and this on performing actions after receiving global alerts
Your code, if I'm understanding correctly, should be similar to the second link's example.
Then, if you implement the DialogClosedListener, like in the second link, you might have something like this:
called from the background when you get notified:
Dialog myDialog = new Dialog(Dialog.D_OK_CANCEL, "Hello", Dialog.OK, null, 0);
myDialog.setDialogClosedListener(new MyListener());
UiApplication.getUiApplication().pushGlobalScreen(myDialog, 1, true);
implementation of your dialog listener:
private class MyListener implements DialogClosedListener {
public void dialogClosed(Dialog dialog, int choice) {
switch (choice) {
case Dialog.OK:
// ok clicked
UiApplication.getUiApplication().requestForeground();
break;
case Dialog.CANCEL:
// cancel clicked. or escape pressed
break;
default:
break;
}
}
}
And, then in your UiApplication class, you can respond to activation, which will happen if the user selects Ok from the Dialog:
public class MyApp extends UiApplication {
private boolean _nextScreenShowing = false;
public void activate() {
super.activate();
if (!_nextScreenShowing) {
pushScreen(new NextScreen());
_nextScreenShowing = true;
}
}
}
I show the _nextScreenShowing variable, just to make sure you think about whether pushing the next screen is appropriate. It probably won't be every time activate is called. You may need to keep track of that boolean flag by responding to the Application.deactivate() method, or maybe Screen.onExposed() or Screen.onObscured(). All that depends on how your app works.
I want to add a button to a markitup set by which i can toggle preview, that is if i click on preview button i can see the preview, if i want to hide the preview - i can hide it by using that button. I've googleed for this but still no result. Any idea how to do that?
Nevermind, i've figured it out. I've added a button to hide it, code as below -
{name:'Hide Preview', call: function (markitUp){ miu.hidepreview()}, className:'hidepreview'}
Where hidepreview() as my custom function. I defined this function as below
miu = {
hidepreview : function(){
$('.markItUpPreviewFrame').remove();
}
}
It works for me.
You can do it by holding the Alt key and clicking on the Preview button - this will close the opened preview window.
It's in the else if statement of the preview() function:
} else if (altKey === true) {
if (iFrame) {
iFrame.remove();
} else {
previewWindow.close();
}
previewWindow = iFrame = false;
}