Android :: Populating Custom Layout From Xml Resource
Aug 8, 2010
I have created a custom list item layout just like in this article http://developer.android.com/resources/articles/layout-tricks-efficie....
Each list item has icon, title and summary.
I would like to declare an xml resource that would provide data for that list. Just like you use <string-array> to populate the list using ArrayAdapter<String>.
The simple ArrayAdapter<String> can be populated from:
CODE:..........
I need each <item> to have icon, title and summary. Somewhat similar to:
CODE:..........
I would use <menu> but menu doesn't have summary if I'm not mistaken.
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Aug 3, 2010
I have an XML resource file:
<resources> <section>
<category value="1" resourceId="@xml/categoryData1" />
<category value="2" resourceId="@xml/categoryData2" />
<category value="3" resourceId="@xml/categoryData3" />
</section> </resources>
Using XmlPullParser, on the START_TAG, I can use:
int value = parser.getAttributeIntValue(null, "value", 0);
to get values 1, 2, 3...however:
int resourceId = parser.getAttributeIntValue(null, "resourceId", 0);
doesn't work...it just yields the default value 0, or whatever I change the default value (3rd parameter) to be. Does anyone know what I am doing wrong or if this is possible?
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Oct 6, 2010
Is there a way to include one resource in another (for example a header design in multiple activities' layouts). I know I can add it at run time, can it be done in the XML?
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Jan 28, 2009
I'm interested in instantiating a LinearLayout object from an xml file that has a LinearLayout file configuration. I want to do this within a method of my Activity. I tried findViewById() but that returned null. I've made sure that the LinearLayout id is the one I'm passing. Note that this layout isn't part of my screen, it's stand-alone, so I want to build a LinearLayout object from the xml.
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Feb 20, 2010
This seems like a simple problem to me, but I can't figure it out. I have a fullscreen layout that displays differently if the screen is taller (854 instead of 800 pixels). I've tried putting the xml into layout-notlong-hdpiand layout-long-dpi respectively, but both my WVGA and FWVGA emulators go for the "long" version (as described in the doc).
Is there any way to distinguish between the two besides using the deprecated -800x480/-854x480 qualifiers?
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Mar 28, 2010
Looking in the android sdk folders, I've found a file called values/config.xml. This seems to be somewhere that you can define values for later use in layouts and animations.
Given the config.xml:
<resources>
<string name="config_somePadding">50dip</string>
</resources>
How would I reference this to use as the layout_height in a layout xml file?
@string/config_somePadding is actually the only one I've found that doesn't throw an error in Eclipse (even though there isn't a config_somePadding in values/strings.xml), but it appears to just put an empty string.
In the sdk, they use an integer for animation duration. They reference it like this: android:duration="@android:integer/config_longAnimTime". Is there a way to use values that aren't integers in the layout_height attribute?
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Apr 17, 2010
Is it possible use the merge tag in the layout XML for a List item? In particular, when using a SimpleCursorAdapter?
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Oct 18, 2010
I have a layout I want to reuse, it looks like:
CODE:..........
It is in a file called "reuseme.xml". Now I have an activity layout, which like the following, how can I incorporate the layout above into it?:
CODE:..........
It seems that's possible, but I'm not sure how to use the merge tag to accomplish it?
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Nov 24, 2010
I need to display a list of categories from a ListActivity. My data source is a ArrayList of type Category which is implementing the android Parcelable interface. stucture is given at the bottom. it has an id and a title
I need title to be displayed as list text and on clicking the list item, i need to get the id for further processing
It is possible to create a new array of 'title's by iterating the category ArrayList and use
CODE:..........
But bu using this method i will get only the title of the category upon click and not the id.
Is it possible to directly use the ArrayList of objects as data source?
CODE:..................
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Nov 3, 2010
For some reason, when I create a bitmap from an image in asset, it does not display fullscreen. When I take an image from drawable, resId, the image shows fullscreen. Why is this?
CODE:..........................
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Oct 16, 2010
the Android phones in Slovakia have a custom locale - en_SK and cs_SK. Language is either Czech or English, location is Slovakia. Now I would like to have strings that target these locales. The default approach is to create a folder "values-CountryCode", for Czech Republic it's values-cs.
But I get a build error if I add a folder name values-en_SK or values-cs_SK: "invalid resource directory name"
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Sep 4, 2010
I'm going through an Android tutorial and I'm trying to access a color I've defined in colors.xml
<color name = "my_background">#3500ffff</color>
Then I'm trying to access this color by name:
Paint background = new Paint();
background.setColor(getResources().getColor(R.color.my_background));
but it doesn't recognize my_background as a resource. If I let the suggestions come up, only a bunch of pre-defined colors pop up that are unrelated. Any ideas? It doesn't make sense for me, I see almost the exact same thing from the developer documentation and another site, but it doesn't work for me.
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Jul 9, 2010
I have created a simple class named Panel which extends the SurfaceView class and does some drawing in the onDraw method. When I use it from the code it works fine. For example this works as expected:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new Panel(this)); ....
However when I try adding this component from an xml layout the program crashes:
XML file (main.xml):
<?xml version="1.0" encoding="utf-8"?> <org.anddev.Panel android:id="@+id/panel" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"/>
Code:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);....
Error msg: Sorry!
The application Test (process org.anddev) has stopped unexpectedly. Pleas try again.
I can not figure out why the same class works when created in one way and doesn't work when created in another.
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Feb 25, 2010
Is it possible to create a button with a custom xml layout? Now I want to use this on a button. Anyone know how I can do this? I was thinking if I had Button.java file that extended Button. And then setView( R. layout. mylayout.xml); but that was to easy, and it clearly not working
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Nov 28, 2009
Currently, I am creating a custom View class (DrawView) that inherits the View class and adding to my activity programatically by using RelativeLayout and LaoutParams etc. But is there an easier way to do this by adding my DrawView to the layout XML file?
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Jun 23, 2009
I've created a custom view via .xml file, and I wanted to add it as a a contentView to an alert Dialog usinf a dialogBuilder:
CODE:.................
The problem is...I can't get my view from my custom layout... I only have an id (int)...
I tried Resource.getLayout(int) => it returns an xmlParser... not very usefull ...
finally the solution I comes up is so disgusting ( it worked but ... let's have a look)
CODE:.......
How can I do that easily without using such a disgusting way... ?
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Mar 9, 2010
I am trying to do is to embed a custom view in the default layout main.xml:
CODE:......
As you can see the class is called com.lam.customview.CustomDisplayView, with the id of custom_display_view1. now in the com.lam.customview.CustomDisplayView class, i want to use another layout called custom_display_view.xml because i don't want to programmatically create controls/widgets.
Custom_display_view.xml is just a button and an image, the content of which i want to change based on certain conditions:
CODE:..............
I tried to do:
1)
CODE:........
But got this error, "03-08 20:33:15.711: ERROR/onCreate(10879): Binary XML file line #8: Error inflating class java.lang.reflect.Constructor ".
2)
CODE:..........
But got this error, "03-08 20:28:47.401: ERROR/CustomDisplayView(10806): Resource ID #0x7f050002 type #0x12 is not valid "
Also, if i do it this way, as someone has suggested, it's not clear to me how the custom_display_view.xml is associated with the custom view class.
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Jul 15, 2010
I've created my own view by creating a subclass of the SurfaceView class.
However I can't figure out how to add it from the xml layout file.
My current main.xml looks like this:
CODE:............
What have I missed?
My view looks like this
CODE:..............
And it works fine like this:
CODE:..................
But nothing happens when trying to use it from the xml.
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Aug 16, 2010
I have a dialog with a custom layout, and I try to close it when I press a button:
private void showAboutDialog() {
dialog = new Dialog(MainMenu.this);
dialog.setContentView(R.layout.about_dialog);
dialog.setCancelable(true);
dialog.setTitle(R.string.about_title);
dialog.show();
LayoutInflater inflater = (LayoutInflater) getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.about_dialog, (ViewGroup) findViewById(R.id.layout_root));
Button closeButton = (Button) layout.findViewById(R.id.about_close_button);
closeButton.setOnClickListener(new Button.OnClickListener() { public void onClick(View view) { dialog.dismiss();
} } );
}
But it doesn't work.
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Apr 29, 2010
The button doesn't show in this layout(code below),image and textview are shown. I tried using relative layout but that doesn't help either.
I'm testing it on 1.5 emulator.
CODE:..........................
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Jul 26, 2010
I have a custom layout that draws a transparent rounded rectangle beneath its children. The problem is when I try to add it to my xml file, it doesn't show up. Also, when I try to add parameters to it (i.e. android:layout_width) the popup shows that none of them are available. The same thing happens to any child views I add. public class RoundRectLayout extends LinearLayout
{ private RectF shape;public RoundRectLayout(Context context)
{super(context);
LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.settings, this);
shape = new RectF();
}public RoundRectLayout(Context context, AttributeSet attrs)
{ super(context, attrs);
LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.settings, this);
shape = new RectF();
} @Override
protected void onSizeChanged(int w, int h, int oldw, int oldh)
{shape = new RectF(0, 0, w - 5, h - 5);
super.onSizeChanged(w, h, oldw, oldh);
}@Override
protected void dispatchDraw(Canvas canvas)
Paint temp = new Paint();
temp.setAlpha(125);
canvas.drawRoundRect(shape, 10f, 10f, temp);
super.dispatchDraw(canvas);
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Jun 13, 2010
I am having trouble getting my layout to give me result I need, I already tried many options and it seems that I'm doing something wrong or completely missing something.
I have a listview with a custom row layout I can't seem to working although it shouldn't be complex. I need of the list row to insist of:
Icon -- title text (bigger and bold) with a short multi line text under the title -- ImageButton
My problem in most of my tests is the icon to the right usually doesn't appear, I guess my center group grows and takes all the space of the button. My last failed attempt was with a Relative Layout, didn't have too much luck with a Linear Layout either.
Here is the row XML:
CODE:.........................
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Aug 6, 2010
I am running a sqlite query and binding the returned data to a ListAdapter.
I have used the following example
ListActivity | Android Developers
However, having defined a seperate layout for the rows I cannot change the typeface for textview text1 to a custom one from assets
Here is the row layout
CODE:................
Here is the code from the andriod tutorial
CODE:............
We'll define a custom screen layout here (the one shown above), but typically, you could just use the standard ListActivity layout. setContentView(R.layout.custom_list_activity_view) ;
Query for all people contacts using the Contacts.People convenience class. Put a managed wrapper around the retrieved cursor so we don't have to worry about requerying or closing it as the activity changes state.
CODE:................
Now create a new list adapter bound to the cursor. SimpleListAdapter is designed for binding to a Cursor.
CODE:................
Specify the row template to use (here, two columns bound to the two retrieved cursor rows). mCursor, // Pass in the cursor to bind tonew String[]{People.NAME, People.COMPANY}, // Array of cursor columns to bind to. new int[] {android.R.id.text1, android.R.id.text2}); // Parallel array of which template objects to bind to those columns.
CODE:................
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Jul 29, 2010
I am trying to refer to a custom View in the helloWorld XML layout but I get the following exception:
Error inflating class acme.my.MyTextView.
However, I am able to instantiate the view and add it to the main content view manually. The custom View is built from it's own XML layout. How do I get this to work?
CODE:....................
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Oct 12, 2010
I'm experimenting with the Android platform, and I'm beginning to love it, but right now I'm stuck, at this cursor/list adapter problem-thing.
The thing is, that I request a function, returning a data object, with several properties I'd like to map to different TextView's.
My list_item.xml
CODE:...........
So what I would like to do is: Map a property of an array of objects to several fields in the file.
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May 21, 2010
How to I tell my own custom Spinner Layout to use my Theme? code...
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Aug 13, 2010
Im creating a custom layout and I want to use the text declared in the layout.xml file in my layout.
Like when I create a TextView in XML and set android:text=@string/text1 when I run the app text view automatically loads the text from android:text. So how can I access attributes declared in the layout XML file in my custom component.
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Aug 9, 2010
I understand how to create a custom Android control, and I believe I understand how to pull attributes for it from the Xml layout. I don't know, however, how to get any children elements from it. Here's a visual example of what I'm trying to accomplish: public class Menu extends LinearLayout. When my Menu is created, how do I get references to the two MenuItems. Code...
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Aug 6, 2010
I have defined custom views in the various layout .xml files. However, all the layouts are using the Linear Layout - put the content would vary.
I would like to create my own widget tag something like <com.mypackage.MyLinearLayout />, I would like to pass the layout as a param to the <com.mypackage.MyLinearLayout layout="@layout/simple.xml" />
How to define new attributes to the custom widgets ? Simply defining a getter/setter method would work or is there any other references.
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May 31, 2010
I have a set of custom views that I would like to add to a LinearLayout object. However, the first object I add to the layout (I do this dynamically, during runtime) has a OnMeasure method that tries to get as much space as possible resulting in that it get's all the space LinearLayout object. This is correct behavior, but when I then add more objects following that I want the allocated area for the first object to decrease so the others will fit. As it is now, each following object will get zero space, and hence won't be visible.
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