Android :: Unable To Open Both Main.xml Files / From Layout & Layout-land At Same Time?
Aug 14, 2010
While developing for Android, I am unable to open more than one main.xml file in an Eclipse editor at a time.Each time I open one, it simply replaces the editor (tab) of the first main.xml with the new one, instead of opening a new tab - even if the contents of the existing tab were unsaved.Even stranger, I can open multiple main.xml files from different projects with no problems.This only happens when they're within the same project.
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Sep 26, 2012
I have 5 layout folders. layout, layout-small, layout-normal, layout-medium and layout-large.
My app is heavily image based. As a result I have created the proper images. mdpi, hdpi and xhdpi. I don't think I need to worry about ldpi since screens are only getting bigger.
With this in mind and the need for me to now create a good landscape layout for all my pages, how do I go about this? Is it simple layout-land? No need for large/small/normal again right?
Considering that I've got all my hdpi and xdpi images do I even need layout-medium, layout-large and layout-normal? Because the images will be adjusting themselves based on screensize surely I can use one layout and have that work for all screens..?
It's all getting very confusing now that I'm trying to add a landscape view to my app. It doesn't do it very well at the moment so I will probably have to design a landscape friendly layout so I can understand that I would need to rebuild all my layouts for this particular use (We're talking about 100 layous here but oh well, I can manage it. )
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Aug 2, 2010
I'm beginning to study Android and have a doubt. How do I open a new layout and code (xml and java) by clicking a button on the main scene?
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Aug 13, 2010
Is it possible to have another layout in my main layout?
Such that i can set my imageview in another layout.
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Sep 15, 2010
I just want to group 4 buttons like this...
Portrait mode:
[1][2]
[3][4]
Landscape mode:
[1][2][3][4]
I dont want to hardcopy my Portrait mode xml-File and put it into the "layout-land" folder for this minor difference. Then, I have to modify two file when implementing new stuff.
Isnt that achievable through wraping it up intelligently in some LinearLayouts? Something like this? ({} represent LinearLayouts)
{{[1][2]}{[3][4]}}
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Sep 3, 2009
I am using eclipse 3.5 with the ADT plugin.when I view layout xml files, i get two tabs in the view the source code view and a graphical view.the graphical view almost never works for any of my layouts.it usually shows "NullPointerException: null" at the top and nothing else. when it does work, it often does not match what i get in the simulator or device.it seems like this thing simply is not ready for prime time; although the idea is very cool.has anyone else had much success with it?
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Apr 15, 2009
I am wondering if we can change orientation just by sensing the layout position, port or land;without flip like iphone does.
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Dec 22, 2009
What is the main use of relative layout?
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Jul 27, 2010
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</LinearLayout>
Since the root element is a LinearLayout, which extends ViewGroup, why does main.xml get turned into a View instead of a ViewGroup? For example, in my main Activity class, I try to get the number of subviews that the LinearLayout contains like this:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ViewGroup vg = (ViewGroup) findViewById(R.layout.main);
Log.v("myTag", "num children: " + vg.getChildCount());
but it crashes when i call vg.getChildCount(). What is the right way of doing it?
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Oct 30, 2010
I would like to have a layout with 5 times 5 buttons. Each of them should have the same width and height (they should be square). And I want the whole matrix to use the screen width (or height, depending on rotation).
I currently do it "by hand" in the Java code:
CODE:...........
This can be improved by obtaining screen width first and then dividing by 5 to get rid of this literal 60. But I'm wondering how I can do this in the res/layout XML file? How can I specify for the height to be the same as the width? (I can set the width to match_parent.)
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Sep 15, 2010
I was looking over this code about extending an ImageView: http://marakana.com/forums/android/examples/98.html
And i was wondering how can i add the new View to an existing xml layout file, along with some other views.
Already i did this inside my main linear layout:
CODE:..........
But the problem is that this way the onDraw method doesn't get called.
Maybe some examples where you combine CustomViews with xml layout.
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Jun 22, 2010
I want to create a grid of images with text right below the images.
I created in a xml file a image_text item which basically is a linearlayout with and imageview and a textview right below.
I created a tablelayout and I want to add my custom image_text.xml to the table row. But I dont know how to reference my xml file inside. If I use the include statament, how do I pass the image id and text to my item_text.xml? code...
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Mar 1, 2010
I've a list view with custom list adapter(list_item.xml). I have multiple layout folder to support multiple screen size. I found out when I inflate using LayoutInflater, its always taking the view from main "layout" folder.
I've a phone with screen size "427x320".
This is my code:....................
I want the layout inflater to pick the list_item.xml from "layout-427x320" folder and not "layout" folder.
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Jul 24, 2009
My emulator is taking more time to open main page what may be the Problem.
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May 4, 2010
I am new in android, i am having few problem in layout alignment. I have divide the screen into three layout,as header, body and footer. I am giving the height dynamically for the three layout in java file, so i need to give 12% of height to header and footer layout, and the remaining 75% i need to assign height to body layout. For that i have made the calculation as follow
first i am getting the height and width for the screen. With the help of the screen height i am getting the 12.5% height for header and footer layout
WindowManager w = getWindowManager(); Display d = w.getDefaultDisplay(); int totalwidth_screen = d.getWidth(); int totalheight_screen = d.getHeight();..................
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Jan 23, 2009
Is it possible to build a GridView object in XML with 3 columns and 4 rows of Image buttons? It doesn't seem to have similar containment relationship like LinearLayout or RelativeLayout viewgroups.
I want to do this entirely in an xml layout file. When I put ImageButton xml tags inside a GridView xml body, The layout panel in eclipse is throwing an exception: UnsupportedOperationException:addView(View, LayoutParams) is not supported in AdapterView.
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May 6, 2010
I have an Activity which uses a layout with a LinearLayout in it. Now I want to create in runtime a subactivity which loads some other layout and add this layout as item of my LinearLatout.
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Sep 27, 2010
I have following in xml
I wanna put the second linear layout at the bottom of the screen.
I have set the property of second Relative layout to bottom but still not showing at bottom..
code:...................
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Sep 6, 2010
I have LinearLayout. Inside to that i have added one more Linearyout ( checkbox & text ).
(LinearLayout) one textView, (LinearLayout) Checkbox,textview , one textview
Now whenever clicks the checkbox, i need to dynamically display EditBox after the checkbox.
code:..........
On the click of checkbox listener i added a code like below.
code:.........
I want to the layout which was added earlier.
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Jul 16, 2012
i have problem in my eclipse, if i open the xml default editor means the eclipse get closed, i cant able to open the xml graphical layout, eventhough i reinstall the eclipse, same problem shout arise
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Dec 11, 2009
Whenever i try to open the layout.xml file in eclipse..eclipse crashes and exits without any messages.. However if i try to open the xml file without using the layout editor of ADT plugin everything is fine....it will open as an editable file..the problem started only after i updated the latest version of ADT...before that everything was working fione.
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Mar 15, 2009
I have defined the layout which you can see at the end of this message. I do not understand, why the button is not displayed. If I move the button to the top that the rendering works.
CODE:......................
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Nov 4, 2009
In android, there are different sub-directory under 'res'
* layout
* layout-finger
* layout-land-finger
Can you please explain what are the difference between these directories?
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Nov 1, 2010
I would like to create a time table like layout which has a dynamically adjustable lengths as shown in the picture Please provide some pointers on how to implement this.
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Oct 13, 2010
I need to create an application with 4 view. I need to pass from a view to an other simply by a touch and a move to the left or to the right (no button). The effect I would like is the same that you see when you navigate in the main menu of android when you pass from a page to another.
I have tested the ViewFlipper, but I cannot use it: it seems not to catch the touch event correctly. I don't even know if it is the right component.
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Aug 21, 2009
Using eclipse 3.4.1 and also 3.5 and I cannot seem to add a new layout .xml file.I tried adding it externally using windows explorer, but got all these errors.
[2009-08-21 00:01:54 - TestAndroid] (skipping index file 'C:workspaceTestProject
esdrawableThumbs.db') [2009-08-21 00:01:54 - TestAndroid] reslayoutTest1.xml: Invalid file name: must contain only [a-z0-9_.] [2009-08-21 00:01:54 - TestAndroid] reslayoutTest1.xml: Invalid file name: must contain only [a-z0-9_.]
Then i tried right click on the layout folder, selected new Android XML file and I got this --
The selected wizard could not be started. Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.editors.wizards.NewXmlFileWizard. com.android.ide.eclipse.editors.wizards.NewXmlFileWizard
I tried both versions of eclipse, I tried uninstalling and reinstalling the ADT plugin. Nothing seems to be working!
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Jul 29, 2010
I've successfully created a countdown kitchen timer activity, however my goal is to have an activity that has 3 timers on it that all work independently. I created a separate layout just for the timer itself and moved the timer code into a class and I've used layoutinflater to create the views and then added them into the linear layout for the activity. I get the layouts fine, however there's no functionality. There doesn't seem to be anything that ties the class code to the activity. How should I approach this? Can anyone point me to some working example code?
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May 4, 2010
Here's a screen shot of the layout I'm looking for: http://www.vimtips.org/media/ll.png Can this all be done with one Relative Layout?
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Jan 30, 2010
I'm attempting to write my first android app and am having a little problem with filling a List Layout from a DB.
The project itself is here:
http://code.google.com/p/biofuelsfinder/
However the specific code ...
The two portions commented out, if run cause and illegalStateException error which then aborts the code.
Below is the stacktrace
W/dalvikvm( 208): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
E/AndroidRuntime( 208): Uncaught handler: thread main exiting due to uncaught exception
E/AndroidRuntime( 208): java.lang.IllegalStateException: Could not execute method of the activity
E/AndroidRuntime( 208): at android.view.View$1.onClick(View.java:2031)
E/AndroidRuntime( 208): at android.view.View.performClick(View.java:2364)
E/AndroidRuntime( 208): at android.view.View.onTouchEvent(View.java:4179)
E/AndroidRuntime( 208): at android.widget.TextView.onTouchEvent(TextView.java:6532)
E/AndroidRuntime( 208): at android.view.View.dispatchTouchEvent(View.java:3709)
E/AndroidRuntime( 208): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
E/AndroidRuntime( 208): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
E/AndroidRuntime( 208): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
E/AndroidRuntime( 208): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
E/AndroidRuntime( 208): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659)
E/AndroidRuntime( 208): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
E/AndroidRuntime( 208): at android.app.Activity.dispatchTouchEvent(Activity.java:2061)
E/AndroidRuntime( 208): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
E/AndroidRuntime( 208): at android.view.ViewRoot.handleMessage(ViewRoot.java:1690)
E/AndroidRuntime( 208): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 208): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 208): at android.app.ActivityThread.main(ActivityThread.java:4310)
E/AndroidRuntime( 208): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 208): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime( 208): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime( 208): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime( 208): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 208): Caused by: java.lang.reflect.InvocationTargetException
E/AndroidRuntime( 208): at com.biofuelsfinder.biofuelsfinder.buttonClickHandler(biofuelsfinder.java:37)
E/AndroidRuntime( 208): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 208): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime( 208): at android.view.View$1.onClick(View.java:2026)
E/AndroidRuntime( 208): ... 21 more
E/AndroidRuntime( 208): Caused by: java.lang.NullPointerException
E/AndroidRuntime( 208): at com.biofuelsfinder.RetailerList.fillData(RetailerList.java:34)
E/AndroidRuntime( 208): ... 25 more
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Jul 30, 2010
I have a custom View that I'd like to specify the layout of in an XML file rather than through code, is there anyway I can take an Android XML layout file and use it to flush out my custom View's content? I know it can be done in an Activity via the setContentView method, but there doesn't seem to be a similar method for Views.
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