Android :: Force LinearLayout To Draw Objects In More Than One Dimension?

Sep 28, 2010

I need to populate a View with a data from adapter which contains some number of strings. The problem is that I don't know how many of the strings will be there. So my idea was to use LinearLayout to store data. But even if I reserve enough space for this data (eventually I will draw it in ScrollView), LinearLayout use only horizontal perspective (drawing Strings to the end of line), and not uses additional space beyond.
My intention is to draw to the end of line, and draw next line... till end of data.

Android :: force LinearLayout to draw objects in more than one dimension?


Android :: Adding ArrayList Of LinearLayout Objects To UI

Jan 27, 2010

I am trying to use the following code to go through an ArrayList of LinearLayout objects, add each one to a TableLayout, and finally add that TableLayout to a ScrollView defined in the main.xml file.

ScrollView theScrollView = (ScrollView) findViewById (R.id.scroll_view); TableLayout theList = new TableLayout(this); ArrayList<LinearLayout> theArray = Edit.getTheArray();

if (theArray.size() > 0) { for (int i = 0; i < theArray.size(); i++) { theList.addView(theArray.get(i)); } theScrollView.addView(theList); }

A second activity (Edit) is used to convert user input into a new LinearLayout and put it in the ArrayList. The code works successfully on the first item in the Array, however, after adding a second LinearLayout to the ArrayList and returning to the main activity, I get a force close and the following error: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

I can't seem to figure out what is happening here. Is there another method I should be using to get my desired results?

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Android :: How To Draw 3D Objects On A MapView?

Oct 20, 2009

I have been able to draw a map using 'MapActivity' class. Am unable to render 3D graphics on the Map. Is there any way to draw something on the foreground with the Map as the background?

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Android :: Efficient Way To Draw Multiple Identical Objects?

Sep 26, 2010

I would like to make a game out of many cubes and am planning on putting it on mobile platforms and also on the web using webgl. My problem is when I make a drawelements call per cube I take a hit on the frame rate. Is there a way I can make a single draw call to opengl es to draw them? The only difference between the cubes would be position and color.

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Android :: Pass Objects Around Activities Using A HashMap Of WeakReferences To Objects?

Oct 26, 2010

The FAQ mentions a method of passing objects around activities. (It is not clear to me): "A HashMap of WeakReferences to Objects. You can also use a HashMap of WeakReferences to Objects with Long keys. When an activity wants to pass an object to another activity, it simply puts the object in the map and sends the key (which is a unique Long based on a counter or time stamp) to the recipient activity via intent extras. The recipient activity retrieves the object using this key.".................

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Android :: How To Filter Objects To Display Onscreen Objects On Map?

Jun 15, 2010

I have an application that have a Google map on Google Android 1.5 since we have been working on the application for a long time, we are not in stage of upgrading to the newest framework, so we are using 1.5. Now, I have map locations that are dynamically generated and drawn on the map at run-time to visualize some streams, Up to this point the application is working fine, Now my problem is that I am trying to filter the objects ( addresses) to visualize only the on-screen ones. I do NOT want to visualize the addresses that are off-screen. The way I am trying to do this is to check the screen-coordinates of each object (address) before visualizing it, then it the coordinates (x,y) more than (0,0) and less than (320, 460). I should visualize it. I am trying to use this approach, but it is not working for some reasons, I have tried many posts but could not understand why, there must be something missing somewhere that I am not aware of.

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Android :: TextView Inside LinearLayout Stretches The LinearLayout

Aug 21, 2010

If I have 2 LinearLayouts split %50/%50 everything is fine. Weights are 1 and 1. As soon as I add a TextView inside the top LinearLayout, it stretches that layout. I use "wrap_content" as the documentation says I should when it comes to weights. As you can see the red and green should be split evenly and text on grey background should be inside red box.

Here is the code:..............

Now if I switch to "fill parent" as follows it actually works but it creates another problem. Here is the code (so far so good):

So looking at above we were forced to use "fill_parent" and we would think like we fixed the problem but here is the problem if we are using "fill_parent" (I took out the textview just to show the problem, textview doesnt make the problem go away anyways):

As you can see I assign the weights 3 (top red) and 2 (bottom green) but what actually happens is they get flipped: The red becomes 2 and bottom becomes 3. Just measure the pixels too see.

Here are the results of the 3 codes: http://imgur.com/iVt8g.jpg

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Android :: Bottom Of One LinearLayout Being Hidden By Other LinearLayout

May 25, 2010

I have a RelativeLayout that has two LinearLayouts in it. One is a bunch of TextViews and EditTexts that make up a form and the other is a ButtonBar that submits the form.

anyways, everything looks great in portrait, but when i switch to landscape mode the bottom TextView/EditText element is being hidden by the buttonbar.

screenshot to show the problem. as you can see some of the "email" textview and all of the email edit text are being hidden by button bar.

http://i45.tinypic.com/2dt7qmt.jpg

and xml:

CODE:............................

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Android :: Draw Route Path Draw Function

Sep 5, 2010

In my android application I use this method in "draw" Overlay class for draw route on map. Can someone tell me if this method is good (in terms of performance) for route draw on map or I must to put code in Thread ??
I'm new to android.

public synchronized void draw(Canvas canvas, MapView mapView, boolean shadow) {
if (pointsAndTimes.isEmpty()) {
return;
}
Projection projection = mapView.getProjection();
Paint paint = new Paint();
paint.setARGB(250, 255, 0, 0);.............

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Android :: Get Dimension From R.attr In Java Code

Sep 19, 2009

Resources.getDimensionPixelSize (android.R.attr.listPreferredItemHeight) does not work. So how to? And any other way to specify resolution independent dimension values in Java code?

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Android :: Combining Two Images Overlaid With Same Dimension?

Sep 9, 2010

I've got a things to do with android, so, I have 2 images,
1. image from camera
2. another image from somewhere

So what I want to achieve is how to combine those image into 1 image, but it's overlapping (just like watermarking the image). The 2nd image should be scaled first into the size of the 1st image(camera) - so they have same dimension, then if the 2nd image pixel is black, don't combine it (so the black means transparent color - on 2nd image). Do you know what is the best way achieve this, can I do this with xor or bitwise?

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Android :: Specify Different Dimension Of Layout For Different Density Of Screen?

May 14, 2010

Can you please tell me how can I specify dimension of layout for different density of screen?
i.e. the layout are the same across different densities, but some dimension are different.
how can I do that?

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Android :: Create A 3 Dimension View Of Background Image

Aug 5, 2010

I have a screen where I need to put a background image. I need to display only a part of the background image in each screen . Now when the user swipes towards left , the next screen will be displayed taking another portion of the background image. This transition from the first to second screen should give a 3 Dimension effect of moving the screen. I am unable to get any help form Android forums.

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Android :: LinearLayout In LinearLayout

Jun 25, 2009

Why is the following code causing an exception? The Code throws a "mBaselineAlignedChildIndex of LinearLayout set to an index that is out of bounds" exception.

CODE:..............

If l2 is dont added to l1 than it works.

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Android :: Hard-coding Button's Width In Dimension Units

Aug 1, 2010

I've got the hard-coded layout, consisting of buttons, and need to enlarge some of them. I found Button's method setWidth(int value), accepting width in pixels, but I need to set value in dp. So, how can I set dp value in program code?

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Android :: Specifying Relative Dimension Of Views On Device Screen Width - Height

Oct 8, 2009

I am writing an android application that has 3 views one below the other. Each view has to be of equal height, depending on the screen size. Each view occupies the full width of the screen. How do you specify in the layout xml that the view has to take up 1/3rd height of the device display height? What would be the appropriate layout to use in this case?

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How To Save Image Into Same Dimension From Different Orientation

Oct 25, 2012

I am building an application in which I have to use canvas. I have to save the image into same dimension no matter what is the orientation.

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Scrolling Image View - Dimension Of About 1200x800?

Jul 25, 2012

I have an image which has a dimension of about 1200x800.. Now I would like to display it in an ImageView in such a way that the image would not scale down to fit the screen of the device but instead it will allow me to scroll (both horizontally and vertically) to view the other parts of the image. Basically just like in the google's MapView. Is this possible with ImageView or should I use other methods?

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Android :: Draw Shape Within Shape Or Draw 2 Lines Around Shape

Jun 21, 2010

I want to have a elmenent with a 2 color border outline. I can do a single color outline using the element, but this only allows me to draw a single line. I tried using 2 elements within my but that didnt work either. Is there a way to either draw a shape within a shape or draw 2 lines around my shape (which has rounded corners btw).

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Android :: How To Manage Objects ?

Sep 8, 2010

I am new to Android development. I want to know how you all manage objects. For eg we make object as A a = new A(); and then manage that object. But, here, we call A.class; My concern is that i don't want to call on Create(),nor do i want to push UI screen I just want to make 1 static object for 1 screen;and want to manage it throughout my application. that is, instead of calling A.class; can i call A a = new A(),and manage that object without pushing,and whenever i need i push that screen. Is there someway?

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Android :: Highlight Linearlayout

Jan 29, 2010

When I'm clicking the linear layout it should be highlighted.

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Android :: Scroller On LinearLayout

Jun 14, 2009

I create a LinearLayout (orientation horizontal) which contains some TextView. The LinearLayout has a size of 1200px. When user move on, the screen, I would like to do like the Launcher application. I tried to use startScroll function. even if I set a distance, the layout doesn't move alone. Only distance did by user is slided. Does startScroll move alone all content? If yes, why my code doesn't work?

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Android :: Remove A Linearlayout

Nov 21, 2009

I have put 6 linearlayouts in the main.xml file vertically arranged in the main linearlayout. initially i want 1, 2, 3 and 6 ll to be displayed, then after sometime, 1, 2, 3, 4, 6 and then after some time 1, 2, 3, 4, 5, 6. is it possible ?

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Android :: Add Scroll Bar To Linearlayout

Jan 29, 2009

I have build a UI using linearlayout. It displays fine if phone is in vertical position. But when I switch my phone to horizontal position. Some content is not displayed. Is there anyway to add a scroll bar to linear layout?

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Android :: Centering In Linearlayout

Jan 27, 2009

How do I place a TextView in the center of a horizontal LinearLayout?

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Android :: How To Extend LinearLayout?

Feb 4, 2010

I'm am trying to learn how to create LayoutGroups. For a start, I created MyLinearLayout which is supposed to force all children into same width (yes, there is layout_weight, but that's beside the point.

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Android :: LinearLayout In ExpandableListView

Jul 18, 2010

I want to inflate a childView of ExpandableChildView component.

Code:.............

Where linearOpt is a vector that contains a lot of LinearLayout objects that I have instantiated.

CODE:..

This is R.layout.itemrow xml:

But I received this error:

CODE:.................

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Android :: Using A Datepicker On A LinearLayout

May 22, 2009

when I'm using a Datepicker on a LinearLayout and I set a date by finger, if I go to landscape mode the widget lost the date that I have previously set and set the actual date. It's a bug or I'm wrong something?

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Android :: Get Height Of A Linearlayout

Nov 1, 2010

I'd like to get the height of a linearlayout. I found more information in this answer

View.getWidth()/View.getHeight() won't give you a meaningful answer until the view has been measured.

How will I know that view has been measured? Is there some event for it?

Solution for me is to get layout's height in overriden onWindowFocusChanged()

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Android :: Passing An ArrayList Of Objects

Nov 12, 2010

Is there a way to pass an Array List of objects between activities? The myObject implements Parcelable and I'm able to successfully pass the objects around individually, but that means I need to have an exact amount of "myObjects" coded. I want this to dynamically grow/shrink by what the user does with the app. I have seen some posts on the web about doing:

Activity A
ArrayList<myObject> myObjArray = new ArrayList<myObject>();

Then when passing this into the intent I would use:
intent.putParcelableArrayListExtra("myObjArray", myObjArray);

Activity B
ArrayList<myObject> myObjArray = new ArrayList<myObject>();
Bundle extras = getIntent().getExtras(); myObjArray = extras.getParcelableArray("myObjArray");

However, the myObjArray always gets filled with "null". How can I achieve this?

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