I need to change Activity to ListActivity. But I can't start my project... do ı need change manifest.XML for it? Or how can I change screen from Activity to ListActivity? Is there any difference to startActivity(new Intent(this, list.class))? Code...
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I was reading on ListActivity and Activity and wanted to know which is better? I only need to display one listview. Would I see great improvements? Does ListActivity handle screen rotation better or it's the same?
This post probably shows my ignorance of Android coding, but here goes. I have a sample app I am developing which starts by extending Activity. I have a main.XML layout which works great. On a button click from the main layout I'd like to load a ListView. I think I understand how to use ListView and seed data into it. I have created a new layout which contains this ListView. I am confused, however, how I switch from a regular Activity to a ListActivity so I get the convenience methods like setListAdapter()? Should I be starting with a ListView, and then drawing the other view on top once the app starts by inflating the layout and using it? If not, how do I create a ListActivity object inside my app, and where should I create that? If you have a sample application or tutorial that shows how to do this, I would appreciate it.
View 2 Replies View RelatedMy activity have to use List and Tab widget, one is left side,the other is right side, I means layout, but use List must to extends ListActivity, and use Tab widget must to extends TabActivity?
View 7 Replies View RelatedI have a main class derived from Activity, I need a ListActivity (displayed when the "menu" button is clicked). How can I proceed. I don't understand how I can switch from one to the other?
View 3 Replies View RelatedMy app crashes when i call a ListActivity from an Activity. I have searched on Internet and many people ask the same but i have not found any response. The only person i have found that solves the problems says that he solved changing manifest but he does not say nothing else. I i put the ListAvtivity as main activity in manifest app works ok buet if a set an Activity as main activity an then call ListActivity like:
Intent searchAct = new Intent(this, SearchResult.class); startActivity(searchAct);
then my app crashes. Des anybody know what happens?
Can i call method of Listactivity from Activity class? I have creates Intent object of myListActivity class and called startIntent() from myActivity class.
View 3 Replies View RelatedIn Android, what functionality do ListActivity and ListView provide beyond a regular Activity and View?
View 2 Replies View RelatedWhen a listitem in a ListActivity is selected, I want to add some ImageButtons on the listitem and want to change its height from 60px to 90px. When the listitem is unseleted, it will be restored. How should I do?
View 2 Replies View RelatedWhen views with different type have same id and screen orientation changes,
either java.lang.ClassCastException: android.view.AbsSavedState$1 or java.lang.IllegalArgumentException: Wrong state class -- expecting View State will occur. (depends on the view's order)
Because View.dispatchRestoreInstanceState() checks id only.
You may wonder why anyone would make views with different type to have same id.
But it can happen when you use tab activity.
Imagine you have tab activity with two children activity.
Tab1 is ListActivity and Tab2 is ExpandableListActivity.
Both activity have id of "@android:id/list" but the type of view is different.
This means we cannot use ListActivity & ExpandableListActivit at the same in one tab activity.
I have a notification that starts my activity and passes a messages using the intent's putExtra() function. The message is then displayed to the user in the activity's onCreate function. When the application is restarted due to a orientation change, the message is shown again as it is still in the intent's bundled data.
How can I remove the extra data?
I tried the following:
Bundle bundle = getIntent().getExtras();
if (bundle.getBoolean("showMessage")) {
// ... show message that is in bundle.getString("message")
// remove message
bundle.remove("showMessage");
}
But the message will still be shown after the orientation changed, seems like the intent used is not the one I changed, but the original one. The only workaround I found is to save the showMessage additionally in onSaveInstanceState(). Is there another way? Or is this the way to go?
I have two tabs each with an activity. Now I implemented an TouchEvent where I will change the activity of one tab. How can I do that. I heard about ActivityGroup and I tried it but If I call that ActivityGroup teh activity switch to fullscreen and the tabs are gone.
View 4 Replies View RelatedHow to change background of activity and background of the application name at the top of your activity?
View 2 Replies View Relatedi am using
Window w= getWindow();
w.setTitle("adf as afsa");
to change title of my current activity but it not seem to work.. can any one guide me how to change this?
I newed a DexClassLoader to load one jar file dynamicly.I think I have to set my cl to be default ClassLoader of Activity.to achieve similar thing. However, it does not work. So event I changed Thread's context classloader, Activity's classloader is not my cl.My question is how to change Activity's ClassLoader?
View 5 Replies View RelatedHow can I change the titlebar color in an Android app? I tried: this.setTitleColor(Color.BLUE); but it changes color of written text on it not title bar color.
View 1 Replies View RelatedEverywhere I look online, it seems that I must use an animation to change views dynamically (like slide in, out). Do I have to do this, or can I simple just setContentView() on each new activity?
View 1 Replies View RelatedI have two Activities A and B . When i swithc between activity A to B the Activity b comes with 3d transition animation.when i press a back button in Activity B the Activity B exits with Animation.
View 1 Replies View RelatedIs there a way to change the font size on a tabbed Activity? I can add an icon but I'd like to shrink the font a bit?
View 3 Replies View Relatedhow can i change value of a Activity label in AndroidManifest.xml file through the code in java. welcome your response.
View 3 Replies View RelatedSuppose I have ActivityA and ActivityB, also suppose that ActivityA is active. I need to:
Programmatically set a text of EditText in ActivityB from ActivityA
Launch ActivityB
Here's my code:.............
ActivityB starts, but without any text in txtResult.
I have created the meat and guts of my application but I want to add a different activity that will be the starting point (sort of a log-in screen).
Couple questions:
1) I have a fairly decent handle on how to switch between activities (based on this article: http://www.linux-mag.com/id/7498) but I'm not sure how to go about creating a new one (with eclipse).
2) once I have a new activity created, how can I set it as the default activity of my application? I presume I could just change the name of the classes...but is there a more elegant way to handle that (maybe within the AndroidManifest.xml)?
I am trying to develop a simple application where users need to answer certain questions. I want that the textview should be changed dynamically in the same activity with sliding to left or right animation.
Can someone let me know how to do this?
When we create a new activity, in the Android.manifest file, we can set some text for the activity's label. It looks like:
<activity class="MyActivity" android:label="Some text here!">
Is there anyway to access that programatically and change it during runtime? Regards Dileep
I think I already know the answer to this, but I just wanted to confirm (I think no horrible ramifications)...
View 5 Replies View RelatedIt is possibile to start an outcoming call without change screen? I've a widget that perform a call for get remaining credit, but I don't want to change screen... If this isn't possibile, is possibile to return to the home screen when the call is terminated? Now the screen remain on last call log.
View 2 Replies View RelatedI think I've missed something in how Android is supposed to work! I have the main Activity with a menu option that opens the preferences screen. What I need is a way for any changes that were made to be communicated back to the main Activity as soon as the preference is activated. At the moment the only way I could get it working is by using the intent data that gets sent back when the prefs activity closes but this isn't really enough. The reason why it needs to be instantaneous is that one of the preferences is a 'Clear cache' button, so I would like the data to be deleted when the user requests it and no later!
View 4 Replies View RelatedI m currently working on landscape mode for android app in which i want to know how to maintain the state of the activity and views displayed on orientation change i.e from portrait mode to landscape mode ?
View 3 Replies View RelatedI am working on a MVC implementation for Android (to be subsequently hosted on SF and/or GC).
It works like this:
Activity (View) <=> Application (Controller) <=> Data (Model) <=> Persistence (DB/Network etc)
The scenario is:
1. Activity launch (main/launcher)
2. Notifies Application about performing a data transaction
3. Upon receipt of data response, controller devices which Activity to launch (or update existing)
4. Application has overridden the method onConfigurationChange
Problem: When the orientation is changed, the Application is notified about onConfigurationChange but:
a) The "current" activity is Destroyed and recreated -- which is fine to some extent b) The new instance which is created is automatically => onCreate, onPause, onStop, onDestroy.... now that's catastrophic.
My MainActivity (the one that is started by the android application) is a TabActivity which contains several tabs (which are implemented as activities as well). In a certain tab/activity I want to prevent the change of orientation/rotation when the phone is turned. What is the easiest way to achieve this?
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