Android :: Implement Tab Layout Using Only One Activity?

Sep 14, 2010

Official android dev website says that:You can implement your tab content in one of two ways: use the tabs to swap Views within the same Activity,.....http://developer.android.com/resources/tutorials/views/hello-tabwidget.html

I just wanna use tabs to swap views, no more than one activity. is there any sample code?

Android :: implement tab layout using only one activity?


Android :: Implement A Layer Above A Layout?

Sep 12, 2010

How to implement a layer above a layout? like this pic: http://ss12.sinaimg.cn/orignal/5d8cb30ag8f47eca43a5b&690

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Android :: Adding To LinearLayout Another Layout And Handle This Layout In Separate Activity

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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Android :: Implement Color Selector Of TextView When The OnClick Listener Is Set On Its Parent Layout?

Aug 8, 2010

The layout xml is as below. I have a RelativeLayout, which contains a TextView. The OnClick listener is set on RelativeLayout. The RelativeLayout has a selector background. What I want is, when user clicks on the RelativeLayout, the background of the RelativeLayout should change, and the color of the text of the TextView should change too. Even though I set color selector for the TextView, only the selector on RelativeLayout works. The color selector on TextView doesn't work. How can I implement change of both RelativeLayout background and text color of TextView when user clicks the layout?

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

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Android :: Implement An Activity That Uses ExpandableListView

Sep 3, 2010

Im trying to implement an activity that uses ExpandableListView and I have gotten so far but now I have found some strange behavior.

My activity is meant to record food intake as specified by the user. they have a choice of menus (breakfast, lunch and dinner - the outer group) which expand to show their contents.
when a user clicks on an inner menu item a dialog appears asking them for the qty. once they enter a qty and dismiss the dialog the text on the menu item changes to reflect the quantity of that item that has been consumed

The above image shows the list in a closed state.

Below is the list after I have opened the lunch menu and clicked on 'Potato Chips' and indicating a Quantity of 1. As you can see the 'Potato' itemtext has now been changed to reflect the Qty of 1.

The strange part happens now. if I click on 'Lunch' and close the list and then click on it again re-opening it, the 'Qty X 1' text has jumped to another item (Milk)

Each time I open and close the list it jumps back and forth between the two items. Also if I open up other items, such as breakfast, I find that they too have now gotten items with 'Qty X 1' even though I havent clicked them.

The bits of code that are relevant are as such:

The XML for a child element:

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

The code thats triggered on clicking a child element:

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

The above code opens a dialog, accepts a value for quantity, appends the list element to reflect this, also saves to database and sets a textview with the selected item and quantity.

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Android :: Best Way To Implement An Activity That Lists Recipes

Feb 15, 2010

I'm working on my first Android app, and would appreciate any guidance to make sure I'm doing this the best way. Basically I want an Activity to list recipes. Eventually I'll have another Activity to display an individual recipe selected from the list, but I'm not worrying about that yet.

The list of recipes should show each recipe's title, description, rating, and date added. For each recipe in the list I'd like the title on the top left of the list entry, rating on the top right, description on the bottom left, and date added on the bottom right. I may want to add photo, icons representing properties of the recipe (e.g. vegetarian), etc. The makes me think that each item in the list should be a TableLayout.

With all that in mind, here's what I'm planning to write:

1. Write class RecipesDataAdapter extends BaseAdapter. Override the getView() method to return an instance of TableLayout. Populate each instance of TableLayout with two TableRows, the first row containing cells for title and rating, and the second row containing cells for description and date added. For now I'll just pass the Recipe instances to the adapter in an array.

2. Write class ListRecipesActivity that extends ListActivity. Override the onCreate() method to obtain instances of the Recipe class and call the setListAdapter() method with an instance of the RecipesDataAdapter class.

Notice that all this is done in code without any layout XML files. All the examples of Activities that I've seen use a layout XML file and call setContentView(R.layout.layout_name) but I'm not sure if I need to do that for this, or even how I would do that considering my main Activity is a list of non-trivial things (TableLayout).

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Android :: How To Implement Generic Activity - List And Map Activities?

Oct 13, 2010

I want to display the same options menu on all of my application's activities. I created a generic Activity that implements the menu, and all my further activies extend it. The problem: when I need to extend other specific activities, like ListActivity and MapActivity, I can't figure out how to extend the generic activity and add the List or Map behaviour to the new class. To deal with the issue I had to create three different generic activities, each extending Activity, ListActivity and MapActivity.I've tried creating an abstract activity but it doesn't work, I would need to extend two classes at the same time. I could try interfaces but since I can't implement methods, I would have to paste the menu implementation all over the second-level classes, right?

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Android :: Implement Touch Events On Activity And Button On Droid?

Apr 23, 2010

I have an Android activity with an ImageButton. I would like to execute some logic when the button is clicked and show a different image for the pressed state, but also receive the touch event on the activity.

By default only the button receives the touch event. If I set the clickable attribute of the button to false then only the activity receives the touch event.

What's the best way to implement the touch event in the activity and the click in the button?

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Android :: Implement Master And Child Page Like Activity In Droid?

Jan 28, 2010

I want to place a common banner and menu on each Activity with footer too.

Can anyone guide me how can I implement master and child page like asp.net in Android?

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Android :: Static Layout For Whole App That Must In All Activity

Nov 17, 2010

Static Layout for whole app that must be in all Activity

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Android :: Pages Activity Or Layout

Oct 5, 2010

My app Consists an intro page with "Start", "About", etc..

I managed to create a functional version of the app by having the "Start" button call a new layout in which a new onclick listener is defined.

This doesn't seem clean to me that I@m defining a new onClick listener for each Layout I use and wonder how the correct way would be to create individual pages (including my "About" and any other screens I implement).

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Android :: Passing Linear Layout From One Activity To Another

Feb 28, 2010

For a rather crazy reason I am trying to pass a linear Layout from one activity to another. Should I use an intent extra for this? What would be the right way to create a Linear Layout in one activity and then spawn a new activity using that linear Layout.

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Android :: Callback To Activity After Layout Has Completed?

Jun 3, 2009

I want to find the dimensions of the various views in my layout. My understanding is this can only be done after layout is completed since layout is somewhat dynamic. So, after the activity calls setContentView() and then returns control on the main thread to the OS so that layout can occur, how do I get a notification that layout has completed so I that I can query the views for their dimensions? On a related topic, can I find out the status bar's height or least the screen's full size (from which the status bar's height can be calculate by subtracting my window's height)?

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Android :: Can't Get Layout Info / When Creating Activity

Jul 22, 2010

I have this element in my layout XML:
<FrameLayout android:id="@+id/FrameLayout01"
android:layout_width="320sp" android:layout_height="380sp"
android:layout_gravity="center" android:background="#99CC33">
</FrameLayout>
And I want to get its position on the screen with getTop(), getBottom() but I want to do it only once.
I was trying to do it on the onCreate(), but those methods return all 0 as response.

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Android :: Access Large Layout In Activity?

May 13, 2010

I am having layout which I want to render on to different sizes of mobile (like WVGA854). Resource structure is like

reslayoutmain.xml
reslayout-largemain.xml

By default it is taking layout main.xml file itself of layout. Its not pointing to layout-largemain.xml. its throwing exception:Activity can not start resource not found. So can any one guide me how can I acheive this and how to support mutiple screens with different layouts like large,small and default along with images specified in respective dip folders.

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Android :: Setting Layout XML File To New Activity

Aug 18, 2009

I created a new Activity and created a new layout file under res/ layout . after this,i also want to add a options menu file under res/menu.but how could i bind all these layout file with this Activity? I can't find any info in manifest file. or i missed it?

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Android :: Loading More Than One Layout File For An Activity

Apr 29, 2010

How can we use more than one layout file. I have implemented a cutom dialog.That means i have created an layout file for dialog. And one layout file for my activity. But whatever the UI items in dialog layout ile if iam using them by findViewById it is giving me null

I will explain in details here @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); applicationContext=getApplicationContext();

Dialog folder=new Dialog(this); folder.setTitle("Creating folder"); folder.setContentView(R.layout.create_folder); TextView tv=findViewById(R.id.folder_text); //Here folder_text is in my second layoutfile ie in create_folder.xml //In the above statemet i got the null to tv variable. folder.show();

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Android :: Way To Connect A Layout View With An Activity?

Feb 4, 2010

It displays the first view correctly but i want it to be connected to a java class so i created an FirstActivity class where i can control all my components in the first view but how do i attach the first.xml layout with the FirstActivity java class ?

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Android :: Pass String From Activity To Layout?

Aug 19, 2010

How can I pass a string from an activity to a layout?
I can pass arrays from an activity to a layout with the following activity code...

Is there a simpler way to just pass a single string instead of any array of strings, from an activity to a layout?

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Android :: Update Activity / Layout From Within Broadcast Receiver

Jun 29, 2010

I have a layout with two buttons, I want to disable or make unclikable one of the buttons when internet connection is lost and back to clickable when connection is regained. From my broadcast receiver I am calling another class(which extends activity and thus can call findViewById) which is attempting to change the main layout. App is force closing. What am I doing wrong here, any other ideas as to how to achieve what I am trying to do.

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Android :: Way To Add A View To Overlap Other Views In Layout / Activity?

Apr 19, 2009

Is it possible to add a view dynamically that overlaps other views in the layout. I have Linear Layout defined for the activity. As part of the Layout I have a custom View. The content changes dynamically and sizes appropriately based on the content size, with fill_parent for width and wrap_content for height. But what I want is, dynamically take over the full screen and then based on a click go back to the normal mode. Is there a mode to display a view where - in it can overlap all other views in the layout?

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Android :: Layout - Start An Activity Without Moving Certain UI Elements?

Aug 3, 2010

I'm trying to implement tab buttons bar and a navigation bar in my android application. The problem is, that I would like the navigation elements to persist. When starting a child activity, the nav bar moves.

How can I make these two elements "non-movable"?

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Android :: Dynamically Adding A View To Activity Layout

Aug 18, 2010

I have a custom view (an extension of a TextView) that I want to dynamically add to my Layout (don't want to include it in the main.xml file).

The book says to fetch the RelativeLayout using findViewById() in my java code then create a new instance of my custom view, then use addView on the RelativeLayout to add the new view.

I'm not getting any errors, but when I click my button to add the new view, nothing is happening (view isn't being added). Do I need to set additional properties on my custom view (layout width, layout height for example) in order for it to be shown?

Adding code

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

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Android :: Add Tab Layout Without Letting Activity To Extend TabActivity?

Jul 21, 2010

I want to add tabs to the layout of my activity, but I don't want the activity to extend TabActivity. The example in http://developer.android.com/resources/tutorials/views/hello-tabwidget.html only gave example of subclass of TabActivity.

Is there any way I can make it without extending TabActivity?

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Android :: Start An Activity Inside Any Layout In Droid?

Sep 24, 2010

I have created a an activity named Example which have 3 LinearLayouts . I want to start an activity. So I used the following lines of code...

Test is another activity. As a result of the above code a new activity is called in new page. But I want to get the same resule or start the activity inside 2nd layout of Example class.

How to achieve this.

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Android : Create A Layout Using The Xml File And Code Within The Activity?

Jul 9, 2010

I'm trying to create a simple text based game in which I ask a question based on a movie. The list of movie's is in a text file which I've included in res/raw. So basically I want to have a default string, say "Who acted in", followed by the name of the movie. Could I have the first string (along with a submit button etc) in my res/layout/main.xml file, and follow that with the movies name, after I've extracted it from the text file in my activity, or does the layout have to be defined in one place only?

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Android :: Which View / Layout Does Market Application (1.6) Details Activity Use?

Feb 26, 2010

I want to do something very similar (in terms of appearance) to the app details activity of the Market app. It looks like a cross between linear layout (not all rows the same), list (scrolling nature), preferences (headings). My guess is its a linear layout in a scroll view (ignoring activity header/footer) and the headings are just hard coded.

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Android :: Remove Default Drop Shadow At Top Of Activity Layout

Oct 26, 2010

I have an activity. It does not have a title bar. The content view is just a linear layout. It looks like android draws a drop shadow at the top of my content view, directly below the status bar. Is there a way to stop that from being drawn?

My layout is just:

I have no titlebar:

requestWindowFeature(Window.FEATURE_NO_TITLE);

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Android :: Soft Keyboard Pushes Layout Of Activity Out Of Screen

Nov 6, 2010

My activity's layout is as shown below.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">

<FrameLayout android:id="@+id/title_bar"
android:layout_width="fill_parent"
android:layout_height="25dip"
android:background="@drawable/bg_title" />..............

So, the search box is fixed to the bottom of the screen. But, when user clicks the EditText, Soft Keyboard shows up and pushes the layout out of the screen except the search box. I'm just starting out with Android, so am I doing anything wrong here??

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Android :: Independent Thread That Executes While Creating Layout And Defining Activity?

Jun 3, 2010

The android docs say that it adds the runnable to the queue and it runs in the UI thread. What does this mean? So, for example, the same thread I use to create my layout is used to run the Runnable? What if I want it as an independent thread that executes while I am creating my layout and defining my activity?

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