In android, there is a function call Toast and it show instantly without involve in time. I tried to use Status in RIM but it must run in the invokeLater and cannot set the time less than 1 second. So it cannot display instantly.
Any other built in that same with Toast or Status?
No there is not afaik. Toast was "invented" in a way by Android.
Previous OS's have used popup boxes with confirmation buttons. A Toast is almost like a popup box with a timer attached to it.
Of course, #Signare gives the common replacement correctly for what you would "normally" do on BlackBerry. Dialog.alert(String)
If you want something more "Androidy", this is something we want to implement at Cobi, but have not gotten around to yet due to time constraints working on client work.
There are 2 unique aspects to a Toast compared to the "old" way of doing things:
the popup only shows for a short time
the popup does not block the user from interacting with the background screen at all
To create the popup screen, look at the PopupScreen class - and you pass in a layout manager of your own that will be displayed.
You could start a timer when the screen is shown (we have not implemented this yet) and that could close the screen for you.
As far as not blocking the user - this is the major difference - and I do not know if it can be done if you use the PopupScreen class. Perhaps if your PopupScreen passes all keypresses through to the underlying screen, this may be possible.
In some of our apps, we have a custom field, defined in our base MainScreen subclass, that can be positioned over the rest of the fields on the screen. This allows the user to continue interacting with the screen while the field is displayed. I cannot share that code at the moment here.
Related
I want to know the event in blocks section using which the entered text value can be obtained without a form submission through button.
Let's say user inputs text in mobile phone through keyboard and presses enter. In this case I want some event to trigger and get the value that user entered.
There are 2 events available like lostfocus and gotfocus.
Will these work? Or is there any other good approach for getting text value on pressing enter?
Unfortunately there is no such event like OnEnterPressed available in MIT App Inventor and the events LostFocus and GotFocus will not work in this case.
What you currently can do is
use a button and use the Button.Click event, or
create your own custom keyboard, see also this example
Currently there is a limitation for App Inventor extensions, which only can be used for non-visible components. Later as soon as also visible components are doable, then you could write your own textbox extension and add an event yourself.
Edit concerning the new question in the comments about different screens:
Use different screens wisely
Before starting to create another screen, first you should think about is it really necessary? See also Building apps with many screens and SteveJG's post about advantages/disadvantages, because in only one screen you also can use vertical arrangements to simulate different screens, just set the arrangements to visible = true/false as needed...
You can insert a Clock component that monitors the TextBox1.Text. When it triggers, it checks if the TextBox1.Text has changed and saves it to a variable. When it triggers again, it compares the variable with TextBox1.Text. After the user finishes typing, the variable and TextBox1.Text will be equal and then you can trigger the event like you eanted when the user pressed Enter.
Hope this helps!
I'm trying to activate Hint from control of different application created from delphi upon focus, I'm using hook to identify the focused control, and then use WM_MOUSEMOVE, which I think will activate the Hint of that control, the handle would be the Control itself and the lParam is the Left and Top of the Control. The Control activate the OnMouseMove Event, but the Hint never shows. but when I use SetCursorPos, Hint show, but I need to show the Hint with out the cursor move on that Control. Can you please help me with this? Thank you in advance... by the way I'm using Delphi XE4
Among the really asked question is how to show the hint of a control that resides on another application (i am afraid without hook that application can not be done), the title is "Delphi - Activating the Hint from another control of Application".
First is first: That can be done without knowing what language the other app was done, but it is very complex to put it here (and i am not an expert on such way of coding, also i hate apps that work that way).
Second: The main idea is to hook the other application, search on Google some code of that apps, that can show you a rectangular hole square of the object the mouse is passing over, that application while doing it is iconized (i do not remember the name of it).
Waht such app does: As you move the mouse over the screen it overlays a rectangular over the control that mouse is over, then if you press the key to print screen, that small region is the only thing that goes to clipboard; on of such apps i saw had an extra funcion, they can move such controls if you press cursors on keyboard, also can hide/enable/disable such control... more, it can also make controls that are invisible to be visible, etc... i saw it working on my computer, and hey, for fun it is pretty and to DeBug or get extra things on some apps is also great (make some menús to be visible and enabled and then can use such funtions).
Please, please, understand i am agaist piracy and also against using such apps to let code to be run... some apps need pay for letting some menus enabled, but they have the code there, no need to change EXE to have/use that menus; just using this kind of apps makes that limited apps to be unlimited (just enable or show hidden menus and voila).
Note: To unhide menus, mouse point is not needed to be over the app, can be anywhere and is not moved.
The idea i want to say is: Any app can move, alter any control on any other app (at least on Windows) that is running, so maybe there can be a way to show such hint.
In the past i had use such app (sorry i do not remember the name) for DeBug my own apps, so i do not need to recompile in such cases where something was wrongly hidden, also work with buttons, labels, texts, combos, memos, etc.
Now my small problem is: I just need exactly what title say, but i can not make it to work.
Must be:
Mouse position must be irrelevant (it also must be able to be outside the application)
Just when a button that has focus is pressed with keyboard (Space or Enter) or just after some code somewhere on my application, i want to show the Hint of a specific TEdit for a short period of time.
I did not get Hint to be shown; not unless mouse point is over such TEdit but i want/need mouse pointer to not be over it, neither it to jump to the TEdit.
Idea Conept for that Hint to be shown: After doing some code that changes something, show extra info associated.
Example:
A button with that loads a file using an open dialog, filename is put on a ReadOnly TEdit (so it let user copy the text, but not change it); i want extra info that i punt on .Hint of such TEdit to be shown inmediatly.
That hint use is for not overload window with a lot of fields (TLabels) for showing such file data.
Simple idea: such Hint shows TimeStamp and size of the selected file.
P.D.: Not much related (since i am trying with a normal plain text hint), but hints can also store a full HTML page and with 3rd party tools be shown as an HTMLhint, so they can show a lot info of that file (also its content, etc) in a web based format; as i say i first try with standard plain text hints.
In order to show hint programatically you need to call TApplications ActivateHint method to which you specify the position parameter.
http://docwiki.embarcadero.com/Libraries/XE3/en/Vcl.Forms.TApplication.ActivateHint
Based on position parameter Application automatically finds which controll is at that position and shows its hint.
NOTE: Position parameter screen coordinates in pixels and not your controll coordinates. So you will have to use ClientToScreen method to change your coordinates apropriately.
You can see simple example of how to use this here: https://stackoverflow.com/a/15031208/3636228
Now if you need to do this from another application then you will have to add some comunication mechanizm to these two application so that one could send a proper message to tell the other to show the hint at specific position. But this does require you to be able to change both applications.
EDIT: This works with VCL applications but I'm not sure if it would work with FireMonkey applications.
I am having an issue with a small blackberry application where touch events are being processed by 1 of 2 certain fields that has focus.
In my case, I have 2 images, one at the top (first element on the screen) and at the bottom (last element added to the screen. Both are subclasses of the BitmapField. Their purpose is to display a web site when the user taps (clicks with the trackpad/ball).
The issue is when either of these has focus, no matter where the user taps on the screen (i.e. in an EditField, another custom button, or just a part of the background), the BitmapField that has focus consumes the event calls the web browser. This obviously only an issue on the BB Torch simulator, and I building for BB OS 5.0.
I have the BitmapField consuming both navigation clicks and touch events.
Also, any direction on where to get a good (as in not written by RIM) event handling guide for the Blackberry API would be helpful.
UPDATE:
I have tried:
public boolean isFocusable() {
return false;
}
But, ideally I would like this to work on devices such as the Curve and Bold.
UPDATE 2:
There a couple of LabelFields inside layout managers that can receive focus, but they do not cause this issue, it only happens when the BitmapFields have focus.
I'd suggest to create a custom image button field by subclassing from Field. Override paint(Graphics graphics) to draw image and focused border (or background). Then just override navigationClick(int status, int time). The BB UI framework will call that method when user clicks your field on a touch screen. As well it'll work for a non-touch screen devices. As a great benefit - you will not need to bother yourself with TouchEvents at all.
Make sure that on the touchEvent() you are checking the location of the touch. If it is outside of your BitmapField's extent, you should be returning super.touchEvent(message). Regardless of where the touch is, when a field has focus it is sent to it first to determine if it should be handling it at all.
I have to do a clean up of some app generated files, when the application is completely closed. The close can happen from any screen. Which method or where should i override globally to caputure Menu Close event, rather than overriding onClose() on each screen of the application ?
And when the application is closed using Menu Close in the middle of the application, is onClose() called for each screen on the stack and are popped off the stack, or it just removes the application from memory ?
I don't believe there's a method that does exactly what you want but I think you can get the behavior you want. First off, based on the testing I've done the close menu item simply calls onClose() for the current screen. The default close menu item does not close the entire application, it just closes one screen.
The closest method I can think of is deactivate(), this is called when the app is sent to the background but not when it's actually closed (i.e. this method will be called if you press the red "end call" button but not if you press close in the menu). This would probably be overkill but what you could do is select "Auto-run on startup" and "Do not display the application icon on the BlackBerry home screen" in your BlackBerry App Descriptor. This would make the app invisible to the user so that it's always in the background, to have an icon on the homescreen and display a GUI you would create an alternate entry point that will bring up the UI. Then when the user selects the close menu item all it's really doing is sending the application to the background and you can put your cleanup code in deactivate().
A much better approach would be to just override onClose() in a parent class and then just make all of your screens inherit from that class. You can put your cleanup code in there. Or if you want the close menu item to close all screens override the makeMenu() method and add a MenuItem that will execute the appropriate cleanup code before calling System.exit().
In my app, I just have all the screens inherit from a common parent class. In that parent class, I implement my standard exit handling.
The correct place to put code that runs when a screen is popped is Screen.onUiEngineAttached(boolean). That method gets called when a screen is actually pushed or popped from the display stack. The other methods are only relevant if you are overriding the behavior of menu items or dirty screen handling.
Another option would be to have a single listener object that handles all this behavior, and use Screen.addScreenUiEngineAttachedListener() to subscribe it to all screens before pushing them on the display stack.
I am using the new BrowserField2 in BlackBerry OS5 to display HTML content in my app. There are 3 options available for navigation through links in that content.
CURSOR navigation uses a block cursor and actually moves through the characters of the page. Not very useful for me.
POINTER navigation uses a mouse like pointer that you move around the screen and hover over elements. This could work but there is a bug however in that the browser field captures navigation and never lets go so this mode is effectively broken if you share a screen with any other managers. Once your focus enters the browser field you cannot move focus back out and into neighboring fields. RIM has acknowledged the bug but has no work around.
NONE which is for custom navigation but they offer no explanation as to how you would do this.
What I ideally want is to simply have trackpad movements move the focus through the links and highlight them. Then a click would activate the link. I assume I would select the NONE option above and implement my own focus navigation but I am not clear how this can be accomplished with the new APIs.
Is anyone familiar with the new browser2 component could give some guidance?
Thanks!
There's a workaroudn to getting back the focus out of the BrowserField using the NAVIGATION_POINTER.
I found it in this thread:
http://supportforums.blackberry.com/t5/Java-Development/BrowserField-2-Navigation-Mode/td-p/632172
"farahh" posted this:
I found out a hack..
with the navigation set to pointer mode, a click outside the browserfield manager invokes Manager.invokeAction(int). I used the getFieldWithFocus to verify which field has focus and then switch the focus to something else.
Cheers.
Nahuel
PD: i havent found out how to get the behaviour you want, i need that as well so if you got it working please let me know, its kinda urgent in my project =(
I actually reverted back to the older browser1 (OS4) component because the navigation problems in browserField2 (OS5) were a deal breaker for me. Luckily the OS4 browser does everything I need in terms of functionality and it has the exact navigation behavior I need and there are no focus problems mixing it with other views.