android-ui

I am building an Android application, in which i've a spinner item. The spinner entry is a category, and there are sub category in each category. I want to implement a UI, such that, when i click a spinner entry, i must get another spinner, showing the sub-categories for that category. (Something like how Windows Program menu works). Here's and image of what it must look like - Consider the drop down as a spinner. I figured out these many ways - Implementing Spinner of Spinners. Populating new spinner on every item-selected. I am confused, as which method is efficient and easy to maintain.

I know that the UI elements (View hierarchy) may only be manipulated from the UI thread. For a background operation, the AsyncTask can be used, which offers event handlers to reach the UI thread. To be brief, is it allowed to instantiate a View (tied to getApplicationContext() ) in a non-UI thread? This custom View descendant -- once instantiated -- is added to the view hierarchy from the UI thread . So only the constructor call is done inside an Asynctask.doInBackground() ; it's attaching ( addView(...) ) to the Activity's root layout hierarchy is still done in the UI thread. In details:

I am using Eclipse IDE. Here is my code for uiautomator testcase: public class caltest extends UiAutomatorTestCase { public void testDemo() throws UiObjectNotFoundException, IOException { //mytesstcode } } To run this test i have to issue following commands from command line: /tools/android create uitest-project -n -t 1 -p Go to the project directory where your build.xml file is located and build your test JAR. ---> ant build Deploy your generated test JAR file to the test device by using the adb push command: ---> adb push /data/local/tmp/ ---> adb shell uiautomator runtest jarname.jar -c

How could I implement a button background for ImageButton or Button which contains 2 textview each using different font sizes ? I cant use static images as background and I need to achieve this either using xml or programmatically. This is a numeric keypad and it carries a numeric value and a set of alphabets each of which uses different font sizes and needs to be set as button text. Here are some of the suggestions that pop-up on my brain but seems to have limitations since I want to reuse the UI component and avoid code repetition. Create a layout xml containing 2 textfields and set that as

I'm having a bit of trouble with custom action buttons in the honeycomb+ action bar. I'm adding a menu item that uses a custom layout (using the android:actionLayout attribute). The reason for the custom layout is that I want a button that has two lines of text that can be updated dynamically. However, I still want this action button to operate like the other standard buttons. By this I mean that the background fades in when the button is selected, and fades out again if it is unselected, all in the style of the platform (the colour seems to differ between different platforms/devices - I've

I realise AndroidPlot has a forum but it isn't the most active so i'll chance my arm here... I'm trying to remove the series indicator or plot legend from my XY plot using the AndroidPlot library. I don't want to remove the series from the plot itself, just the legend. I've seen it done on AndroidPlot examples but with the limited documentation it's difficult to find methods to do the stuff like remove the legen OK I have the following code to do this. This is not tested on the very latest version but hopefully is still good. if (!mKeyOn) mDynamicPlot.getLayoutManager() .remove(mDynamicPlot

What I want to achieve is like this layout: I have tried to use this code, to achieve like that image, but unfortunately, I failed. This is the snippet of my code: <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:clipChildren="false" > <RelativeLayout android:id="@+id/text_area_third" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@drawable/round_corner_background" android:focusable="false" android:paddingBottom="5dp" android:paddingLeft="5dp" android:paddingRight="5dp

I was wondering what are the pitfalls of deleting the ldpi/mdpi/hdpi folders on my android project? Can i just copy all the images in the drawable folder instead? I did see the following links about UI development for android http://developer.android.com/guide/practices/ui_guidelines/icon_design.html http://developer.android.com/guide/practices/screens_support.html thanks PS: I 'm referring to all the images that are being used, background,icons,menus etc... If you want to, go for it. Although not the best practice, if your application is quite conservative in terms of graphics then this may