Hi,
I'm working on an application where the UI is created dynamically,
and the different Layouts must be populated during runtime.
For some reason, when I add a new control such as an EditText, of a small height - for instance 20, the control is not displayed correctly - that is instead of the entire control being resized, it is being partly cropped.
What could be the reason for such a behavior?
Many Thanks!
Vitaliy
Related
I want to develop an app that puts a white line grid on a black background.
The grid has 3 columns and 3 rows
There is a 10% border around the grid.
The first column takes up 50% width
The second column takes up 20% width
And the third column takes 10%width
None of the columns expand or contract, they always stay the same size.
Each row is the same height.
If you click any cell, a keyboard appears on the screen allowing you to input data into the cell.
Is it possible to do this white line grid in Android?
If yes, how does one do it?
Best regards
RedTopBox.com
anyone know
Hi All
i have not received any replies.
Can anyone help please
I think it is possible. Do you have a fixed number of rows? is it small? if yes, you could directly use LinearLayout with orientation set to horizontal for each row. There you have android:layout_weight which you can use to play with the different widths you have. For the table borders, just add a View, with a background color of your preference, again use layout_weight if necessary.
If you have too many rows, or you would prefer another approach, you could use TableLayout, and for each row a TableRow, and in the same way use layout_weight for the width. For drawing the borders you could do it in this way: http://www.droidnova.com/display-borders-in-tablelayout,112.html
TableLayout has different parameters like shrinkColumns, or stretchColumns, which you will probably would need, but I am no expert on this, so you would need to play with them.
For displaying a keyboard when the user press on each element of the table, you could have a editText on each, so this would be automatically.
BTW I recommend you asking this type of questions in stackoverflow.com, and tag it with android, there should be more capable people than me to help you with this particular case.
is it possible? I have created a unique sort of clock as an AppWidget that has horizontal bars that should indicate minutes and hours. How could I change the width of the LinearLayout used as a bar from the onUpdate() method? I tried RemoteViews but that Views seems to lack a setWidth() method...
appwidgets are unlike anything else in android. they cannot directly alter, add, or remove items from a layout. the only thing that can be altered is text in a textView, the visibility of a view inside the layout, and the value of any of the views inside the layout, like int, bool, float, images, progress bars.
you can however change the view entirely, as in change to another layout.xml
you'll have to be creative to be able to find a way for your widget to change. i think the setViewVisibility() method could help. if you layout every piece that you need and selectively set their visibility based on the state of your widget.
here is a kinda related topic
http://stackoverflow.com/questions/...-dynamically-in-an-android-widget-api-level-3
Hmm, so if I would do 60 linearlayouts and place them next to each other, and say the clock is 13:30, I set the first 30 layouts visible? How would that many views affect performance???
Not sure. Probably wouldn't be good with that many.
This is where you'll have to be creative. Might be good to have one image view and have a bunch of images of the bar at different stages. Though that would require alot of images.
Just remember you can change the content of a view but you cant add another view "on the fly". Its a tricky thing to deal with in an appwidget. Ive been trying to make a widget that displays a tag cloud of your gmail inbox and ive had to use a textView as a wrapper to display the generated html for the cloud instead of adding new textViews for each tag.
From something awesome
Flash files are used widely, but when people use it, they always need new demand. People always chase perfect. SWF files optimization is one of the chasing things. Here is the tip for how to optimaiz flash swf files.
General optimization
Please use symbols, animated or otherwise, for every element that appears more than once. You need to use tweened animations when you are creating animation sequences, because these animations occupy less file space than keyframs. Use movie clips instead of graphic symbols for animations sequences. You need to reduce the area of change in each keyframe as possible as you can to make the action happen in as small area as possible. Try your best to avoid animating bitmap elements and use bitmap images as background or static elements.
Colors
You can use Color menu in the Symbol Property inspector to create many instances of a single symbol in different colors. Then you need to use Color Mixer to match the color palette of the document to a browser-specific palette. Use gradients sparingly. You need about 50 bytes for filling an area with gradient color. You can use alpha transparency sparingly because it can slow playback.
Texts and fonts
You need limit the number of fonts and font style. Please use embedded fonts sparingly because they can increase file size. Select only the needed characters instead of including the entire font for Embed Fonts options.
Lines and elements
Do your best to group elements. You can separate elements that minimize the number of separate lines that are used to describe shapes by using layers. Reduce the number of special line types as possible as you can, such as dashed, dotted, ragged. Solid lines require less memory and lines that are created with the Pencil tool need less memory than brush strokes.
With these tips, you need not to spend extra money to buy some software or tool. What’s more, these tips are easy to understand, you are not required much flash knowledge.
Since SDK 4.2, Google has a way to retrieve the dimension of an existing appwidget. You can use the bundle in onAppWidgetOptionsChanged callback to retrieve the upper and lower bound of the widget. But I need to scale a bitmap precisely to fit the widget. Anyone knows if it's technical possible in existing SDK to get the pixel-correct dimension of the appwidget?
What's more, I found that the stock launcher in JB (as well as Apex) returns incorrect values for the upper and lower bound. For example, if the widget is in portrait, it may return a rectangular dimension in landscape. Nova, however, doesn't has this issue.
I am making simple ball game and l have problem.I can't change position of Ball. I tried:
1. SetX() and setY() but lower APIs aren't supported.
2. Params and margins but when I move it left or right, the whole activity content is moving with it. Up and down moving is working fine. (Activity will have 10 ImageViews)
3. Android animations - Problem is that I can't get coorinates (getLeft(), getTop()) during the animation.
4. Canvas and draw elements - I change position of image with onDraw() and invalidate() functions but when I but backgorund and all other images (as bitmaps) it is very slow.
Can you give to me any ideas or suggestions? Thanks in advance.
Can you post the code? What do you exactly want to be done, there can be many different "ball games". You want to change the position of a bitmap or circle on the screen create x and y variables, draw bitmap or circle using them and if they change, the object will be drawn elsewhere