Android :: Constant Vertical In LinearLayout
Feb 15, 2009
Eclipse doesn't seem to like the constant VERTICAL in the LinearLayout. Can you tell me what the problem might be. Here is a snippet of the code I have. I am using the latest Android SDK.
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Jun 11, 2009
<LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/Layoutbuttons"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/Bsave" android:text="Save"></Button> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Clear" android:id="@ +id/Beditclear"></Button> </LinearLayout>
<LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/Ledititems" android:orientation="vertical" android:scrollbars="vertical" android:scrollbarStyle="insideInset" android:scrollbarAlwaysDrawVerticalTrack="true" android:fadingEdge="vertical" android:fadingEdgeLength="8px"></ LinearLayout>
</LinearLayout>
I am adding dynamicly created EditTexts to the last vertical LinearLayout:
ArrayList<EditText> arrayedititems; edititems = (LinearLayout) findViewById(R.id.Ledititems);
arrayedititems.add( new EditText(globalcontext) ); //multiple times to add many EditTexts .... edititems.addView(arrayedititems.get(lastindex) );
Now all the edittexts are being added fine and show up on the linearlayout, the problem is I get no vertical scrollbar and can not scroll the linearlayout (you can a see large number of failed attemptes in the xml entry to enable this scrolling, such as forcing scrollbars or setting to vertical) Do I need to call some sort of invalidate() or notifyDataSetChanged() like with an arrayadapter to update the LinearLayout into checking if it needs to enable scrolling?
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May 7, 2010
Any insights/pointers regarding creating a layout like this. I have wasted quite a bit of time on this. I want to create a vertical linearlayout which has multiple ExpandableListViews separated by TextViews.
CODE:.........................
I tried the following approaches but each of them has one shortcoming or the other:
1. Add TextView and ExpandableListViews to a linearlayout. The problem with this approach is that LinearLayout by default is unscrollable.
Adding the LinearLayout to a ScrollableView creates even more issues because ListViews handle their own scrolling behavior.
2. I tried using a single ExpandableListView to model the above layout but the problem is that setGroupIndicator applies to the entire ExpandableListView, not a specific group.
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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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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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Apr 14, 2014
I have a Gridview, include hundred of items (thumbnail images). I set a multi-select mode, in this mode, user just need to swipe his finger to start selecting multiple items (this case, gridview can not be scrolled). And in a normal touch, Gridview still can vertically scroll for user to see other thumbnails and continue selecting.
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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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Jan 29, 2010
When I'm clicking the linear layout it should be highlighted.
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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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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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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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Jan 27, 2009
How do I place a TextView in the center of a horizontal LinearLayout?
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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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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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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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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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Feb 8, 2009
Is it possible to have a vertical SeekBar? I would want this for a tilt control slider.
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Mar 18, 2009
I have an activity that serves 40 layout files. I like to map a given string say layout/main10 to the corresponding mnemonic in R.java class. Once I get the mnemonic, I can pass it to setContentView () in onCreate(). Is there a way of doing it?
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Feb 18, 2010
I'm implementing a game loop with constant FPS. I'm thinking about 25-30 FPS should be enough.
Any ideas from your own experience? Should I even restrict FPS at all?
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Oct 16, 2009
I am trying to perform a rating system, where with the choices to select from returns a constant number so I can insert a value into a database. My intentions are to have 3 choices, 'Great', 'Mediocre' and 'Bad'. I would like Great to be a constant for '3', Mediocre to have a constant '2' and Bad to have a constant for '1'. I would like to insert only the numerical values if possible, any easy way to do this?
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Oct 10, 2009
I'm trying to create a simple view of a header image, few buttons, then footer image. I'm using a LinearLayout inside a ScrollView.
Even though i'm using the android:layout_gravity="bottom" for the footer image, it's being placed about 1 cm above the bottom margin.
I'm using the following xml config
CODE:...............
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Sep 7, 2010
I want to display the text for some buttons vertically "down the screen" instead of horizontally. I don't want the orientation of the letters to change just the direction in which the letters are printed. Is there any way to achieve this, other than creatng a drawable that has the letters in this format and using it as a background? I guess I'd need to center the letters horizontally as well.
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Jul 15, 2009
I know my original post (at http://groups.google.com/group/android-developers/browse_thread/threa..., I could not find a way to perform a reply, maybe it's too old) is not sexy, but I'm now facing that problem in many situations. Let me please rephrase what I attempt to do, and what my problem is.
I have a RelativeLayout made of three widgets (named 1, 2 and 3 on the illustrations below): one attached to its parent left border (labelled 1), one to its parent right border (labelled 2) and the third (labelled 3) inserted between the 2 previous ones (its left border is attached to the first widget right border, and its right border is attached to the second widget left border). The third widget (the middle/central one laballed "3") is far taller than the two others, and I would like the first and second items (1 and 2) to be vertically centered with the middle widget.
I have resorted to the "android:layout_centerVertical" attribute for both the first and second widget, but I do not get the expected result. See at the bottom the various layouts I'm mentionning. Could someone please help me, and tell me whether what I intend to do is feasible, and how? Thank you for your time.
Layout with no "android:layout_centerVertical" specified: ------- |1|3|2| --|3|-- |3| ---
Layout with "android:layout_centerVertical" set to "true":
--- |3| |3| |3| ------- |1| |2| --- ---
What I'd like: --- --|3|-- |1|3|2| --|3|-- ---
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Mar 25, 2010
I recently struggled with an apparently simple Android layout: I wanted a WebView above a Button. It worked fine with the following parameters:
WebView:
Height: wrap-content
Weight: unset (by the way, what is the default?)
Button:
Height: wrap-content
Weight: unset
However if the web page became too big it spilled out over the button. I tried various combinations of weights and heights, and all except one either completely hide the button, or partially cover it...............
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Jun 25, 2010
I have made a LinearLayout in the code. It is joined to an BaseAdapter. This two class is representing an list in my app. The problem is: when I making scrool on the list it is going to black. I can't chache the cachecolorhint because, the LinearLayout hasn't got and param. like that. I don't want to rewrite the app. if it isn't nessesery.
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Mar 3, 2010
I am facing a problem in designing LinearLayout. What I want is the Textbox at the top and button bar at the bottom. But the top Textbox just don't appear. The xml file looks like this:........................
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Nov 7, 2010
On the emulator, I see the custom SurfaceView _map Object take up the whole screen, except for the EditText text-box at the bottom, right where it should be. When I run the same code, same everything, on my Motorola Droid, there is no EditText to be seen anywhere. I figure that I am missing something with the LinearLayout implementation I have. Until now, I've gotten off easy on learning how to use another API's layout manager.
Here's the code:.......................
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Nov 1, 2010
I've always been using RelativeLayout everytime I needed a View container, because of it's flexibility, even if I just wanted to display something really simple.Is it ok to do so, or should I try using a LinearLayout when I can, from a performance/good practices standpoint?
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Sep 9, 2010
I want to add some checkboxes to a LinearLayout at runtime. The orientation is vertical and I want the checkboxes to appear at the bottom. I create each checkbox like this: CheckBox box = new CheckBox(this);
Then I add the box to the current view like this: addContentView( box , params ); What should be the params to get the effect I want? So far, everything I've tried ends up overlaying the new checkboxes on top of each other and on top of the other items in the layout. I want everything stacked in a column with the new checkboxes at the bottom.
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Aug 5, 2010
After I start the activity I am unable to scroll down to see other buttons and options in the xml defined below. Does anyone know how to make this scrollable?
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:background="#000044"
android:isScrollContainer="true"
android:orientation="vertical">
<TextView
android:id="@+id/title"
android:text="@string/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editTitle"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/description"
android:text="@string/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editDescription"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/location"
android:text="@string/location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<EditText
android:id="@+id/editLocation"
android:text=""
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/startTime"
android:text="@string/startTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<DatePicker
android:id="@+id/DatePicker01"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TimePicker
android:id="@+id/TimePicker01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/endTime"
android:text="@string/endTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#ffffff"/>
<DatePicker
android:id="@+id/DatePicker02"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TimePicker
android:id="@+id/TimePicker02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/buttonCreate"
android:text="Create"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
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