Im using a base adapter for binding a data from array to listview....the listview has a checkbox with it...i wanted to create a menu to select all or deselect all view inside that list...but the getchildCount method is behaving abnormally..i m not able to get the correct child count...
CODE:................
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I want to display a ListView with checkboxes, and I want some of the checkboxes pre-selected. The ListView has setAdapter called during onCreate, and the list information appears when the screen is drawn. However, when I attempt to set certain list items as checked, my ListView reports getChildCount() = 0.
My SharedPreferences contains a list of sounds that have been previously selected, as a comma delimited string of list indices. Because the list appears to have no children in onStart, my attempts to set items as checked fails.
On the good side, once the list is rendered, I can select entries and hit Back, and my selection is stored to SharedPreferences correctly.
How can I load my previous selection into the list? Should I be using something else here?
In the spirit of open source. here's my code:
CODE:.................................
I'm trying to override the onBackPressed() method of the ActivityGroup class:
public class MyClass extends ActivityGroup {
@Override
public void onBackPressed() {
// do something
return;
}
but I'm getting the error The method onBackPressed() of type MyClass must override a superclass method. I'm relatively new to Java, I've seen here that people do it and it works for them Why I'm getting this error? I'm writing an app for android 1.5, could the problem be here?
In Eclipse, when I mouse hover over a built-in method, it displays a method definition including stuff like what the method does, input objects, return objects etc. If I have a yellow line (warning) under the method I'm trying to use, I can't get the mouse-over to show the definition. If I try hitting F3, I get a "The Jar of this class file belongs to container "Android 1.6" How do I show the definition of the method I am using when there is a warning?
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CODE:.......
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Basically I'm calling the onDraw method like so...
code:...................
You see I'm drawing it on top of a Camera view and the information being drawn is subject to change. I have a listener setup which will update the variables being drawn at the appropriate time but I now want to "refresh" this draw in that listener.
I have two android projects, ProjA requires ProjB (in Eclipse Properties > Java Build Path > Projects > Add > ProjB). Every thing compiles ok in Eclipse, but when I run ProjA I get an error: Could not find method XXX, referenced from method YYY. Where XXX - is the method from ProjB. How can I fix the settings?
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For example I have the following method:
CODE:.................
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CODE:...........................................
I want to use dynamically registered BroadcastReceiver that has a reference to an activity so it can modify its UI. I am using Context.registerReceiver method but receiver's onReceive method is never called.
Here is the sample code showing the problem:
CODE:............................................
I am looking to run a certain method call every ten minutes in Android, what is the best way to go about implementing this? I am currently looking at using the Handler object's PostDelayed method.
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