Invoke no method named get value in class java.lang.boolean how solve this error

[priyankakonde]

sir i want another one feature in cloud chat app is , whenever i opened my application i dont want previous messages , then what changes i should do?

[ChrisWard]

That's unusual, most Chat Apps retain the messages. I don't now how your App works, how it displays the messages, but it should be possible to clear the chat area when the Screen Initializes via the Screen Initialize Block.

[priyankakonde]

can u explain through any example ?so i do the same in my app!!

[ChrisWard]

I can't, I don't know how your App works - how does it display the Chat messages?

[priyankakonde]

this is my blocks

[priyankakonde]

this one i make right now as u say so it is correct or not for clear previous messages?

[ChrisWard]

That would clear all chats stored under that tag, yes.

What does ListView1 do, display the chats?

[ChrisWard]

How to clear a ListView:

[priyankakonde]

yes sir that only

[priyankakonde]

i ask that only to u ..my app was like in text box i do msg and click on submiit button then those msg i saw in list view this is working of my app
but i want when i opened app i donr t want previous meassages so what should i do ...

[priyankakonde]

is i have to clear the cloud db or clear list view .....which one is right and if right how i do those please can u explain me?

[ChrisWard]

For you to judge - if you clear the Db, the chat is gone forever. If you clear the ListView, the display of the chat is gone, but can be restored.

[priyankakonde]

ok sir !! how i used block to do both ?

[priyankakonde]

this for clear the list view and if i use this under the screen intializes then list view is clear right?

[ChrisWard]

Correct - but you don't have to ask, just experiment!

[priyankakonde]

what i do is not working

[ChrisWard]

OK

You are calling 'GetValue', so if there is a value, it will be loaded. If it's your intention to just delete all chat from the Db Tag 'chat', remove the tag (when you store later, the tag gets re-created).

[ChrisWard]

What if you have more than one Tag and want to delete all data. Well, you could, if the Db was on your own Server, delete the Db file -not from an App, from a control panel that offers Server management via a Browser on your Computer.

From an App, you could delete all of the Tags.