Android :: Retrieve Saved State Of Custom View In Constructor?

Oct 12, 2009

The "View" instance currently provides a way to retrieve the saved state using the methods below, but there doesn't seem a way to retrieve the view's saved state in the constructor, or onFinishInflate. The custom view is constructed via XML, so I cannot pass the saved bundle from the Activity to the View's constructor.

Relevant methods: - protected Parcelable onSaveInstanceState() and - protected void onRestoreInstanceState(Parcelable state)

I need this because I make an asynchronous network request in a custom view constructor, and if there is a configuration (orientation) change, the custom view is getting reconstructed, and the request is getting performed again. I want to intercept the second request in the constructor. I can do this in the onRestoreInstanceState, but I need to handle this in the constructor.

It would be nice if there was a method such as getSavedState so that the decision can be made in a constructor or onFinishInflate instead of waiting for the onRestoreInstanceState trigger.

Android :: Retrieve saved state of Custom View in constructor?


Android :: Save My Custom View's State After Orientation Change?

Oct 20, 2009

I have a custom View, what is the proper way of saving / restoring it's state after orientation change. I know I should implement onSaveStateInstatnce() and onRestoreInstanceState() methods, but how exactly (with which argumets) and when I should call them?

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Android :: Subclass Of View Constructor Not Being Called

Jun 6, 2010

I'm subclassing Android's view class, but whenever I make an instance of the view from another class, the constructor never gets called (or so it seems). I've implemented both public myclass (Context context) and public myclass (Context context, AttributeSet, attrs) I can't figure out what I'm doing wrong. Do I need to override onDraw and onMeasure?

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Saved State Not Working?

Aug 14, 2012

I am having an issue with Saved state. It is simply not working. I am guessing it is because of the spinner initiation on onCreate but am unsure.

Code:

publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Spinner spinner = (Spinner) findViewById(R.id.spnrDenomination);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.denomination_array, android.R.layout.simple_spinner_item);

[code]....

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Android :: Retrieve Current State Of A Media Player?

Apr 28, 2009

Is it possible to retrieve the current State of a Media Player?

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Android :: How To Retrieve XML Attribute For Custom Control?

Mar 17, 2010

I've created a combo box control with a edittext and spinner. I'm trying to let the android:prompt attribute be passed onto the spinner, which means I need to catch it in the constructor which passes my the AttributeSet and set it on the spinner. I can't figure out how to get the value of the prompt.

I get back 0, which means it didn't find the attribute.I also did a ta.count() which returned 0. So I'm not getting anything back.My XML simply defines an android:prompt value.

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Android :: Elegant Solution To Retrieve Custom Date And Time?

May 27, 2010

I am currently using a date and time picker to retrieve a user-submitted date and time, and then I set a control's text to the date and time selected.

Now, while the above code block does bring up the date and time widgets and sets the text, the code block is being executed in full before the user can select the date.. ie: It brings up the date box first, then the time box over that, and then updates the text, all without any user interaction. I would like the date widget to wait to execute the time selector until the date selection is done, and i would like the settext to execute only after the time widget is done. How is this possible? Or is there is a more elegant solution that is escaping me?

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HTC Desire :: Where Custom Scenes Need To Be Saved?

Sep 24, 2010

Where are the custom saved scenes saved? I want to delete a few that i saved a while ago.

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Android :: Saving State Of ArrayList Of Custom Objects

Aug 12, 2010

I have a member variable in my Activity which is an ArrayList. The objects populating this Array List are objects I have defined called Rating Item. Rating Item has several member vars like rating, comment, ID, etc. I would like to save this Array List in onSaveInstanceState so it can be repopulated from onRestoreInstanceState. What is the best way to do this? I've never saved the state of an object of this complexity.

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General :: View Picture Not Saved?

Jan 22, 2014

How do I view a sent picture again via messenger if I did not save it?

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Android :: Can An <selector> Be Based On An Object's Instead Of A View's State?

Aug 3, 2010

I think this is a pretty simple question but I'm having trouble finding the answer out there.I'm developing an android application (currently developing against v1.5 API) and one of the activities use a ListView. I want to be able to set the properties of each List Item based on the state of an in memory object rather than the state of the view or list item.Here is a simple example....say I have a Person class who's public members are defined as follows. Code...

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HTC EVO 4G : Will Custom Settings Still Be Saved When Re-enable Sense?

Jul 1, 2010

Coming from Windows Mobile with Sense, I am new to android and unfamiliar with the default Android interface and would like to check it out. If I have saved my custom scene, then disable Sense to experiment with the Android launchers, will my custom settings still be saved when I re-enable sense?

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Android :: Custom Listview Background Focus State Not Working

Jun 18, 2010

I am trying to create custom background selector for my ExpandableListView. It works fine for all states other than focused. I am unable to identify which row is currently focused. Here is the code...

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Android :: How To Save An Instance Of A Custom Class In On SaveInstance State?

Jul 3, 2010

I created an instance of a custom class RestaurantList to hold my data (a list of restaurant data received from a web service as json data).How can I save it in onSaveInstanceState? Code...

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HTC EVO 4G :: Clipboard On Phone To View Information I Saved?

Sep 27, 2010

I have saved information to the clipboard on the EVO and now I dont know where to find the clipboard so I can view the information I saved. This is so frustrating.

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Android :: Modified Checkbox State To Be Selected But View Unchanged?

Mar 1, 2010

In my android app, I have a preferenceScreen with some checkboxes defined in a xml file and a class that implements "SharedPreferences.OnSharedPreferenceChangeListener". What I want to do is to select a checkbox and all the others to be selected as well. In the above listener I am able to modify the other checkboxes's state to selected, but my view remains unchanged. What should/could I do to achieve this ?

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Android :: Gallery / Adapter View Child Draw Able State

Oct 4, 2010

I am using a Gallery view where the view corresponding to each item is non-trivial and consists of text as well as multiple buttons. When I click to drag the gallery view (somewhere not on one of the buttons) the button's drawable state changes to pressed and appears as if all of the buttons are currently being pressed. Additionally, the same behavior happens for the selected state (e.g. all of the text of the child TextViews changes color). I am trying to prevent this behavior and have found the android:duplicateParentState xml attribute as well as the setDuplicateParentStateEnabled property. This seems like it should accomplish what I am trying to do, but it seems to have no effect.

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Android :: Activity Switching Won't Keep State Of View Alive Even Using Saveinstancestate() / Why?

Aug 31, 2010

I just started working on android(beginner). I'm stuck in the activity state complexity. I created two activitys(activity1 and activity2). wen i move from the activity1 to 2 and then back to activity1 using a button(back of activity)the values(states) of the views are not restored. here is the code...

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Android :: Prevent Custom Views From Losing State Across Screen Orientation Changes

Aug 22, 2010

I've successfully implemented onRetainNonConfigurationInstance() for my main activity to save and restore certain critical components across screen orientation changes.

But it seems, my custom views are being re-created from scratch when the orientation changes. This makes sense, although in my case it's inconvenient because the custom view in question is an X/Y plot and the plotted points are stored in the custom view.

Is there a crafty way to implement something similar to onRetainNonConfigurationInstance() for a custom view, or do I need to just implement methods in the custom view which allow me to get and set its "state"?

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Android :: Custom View Extending View-Class / Still Based On XML-Layout

Aug 17, 2010

I want to build my own custom view which should look like the Crysis-GUI.At first I designed a XML-based Layout and made it visible via the setContentView(int resid)-Method. Worked pretty well.But now I wan't to go a step further and draw in my Layout. So I created a new Class, let it extend View and overrode the onDraw()-Method. So far so good.But how can I still use my XML-Layout? I can't do setContentView anymore, so how could the same effect be achieved?

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HTC EVO 4G :: Way To View Files Saved To Phone And Delete / Open?

Jun 11, 2010

Kind of like filez for the palm OS? ive downloaded a few things I want to delete but I am unsure how to do so. I see a file manager program, anyone have an opinion on which is best?

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Android :: How Do I Programmatically Add Gestures View To Custom View?

May 26, 2010

I have a custom view that works fine and I'm trying to get gestures into it. The most common technique I see is to add XML, such as this (from Android docs.Can someone point out my errors, suggest a better way that will allow me to get gesture callbacks and/or suggest diagnostic approaches?

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Android :: Multi Column Custom List View / With Editable Edit Text At End Of List View

Nov 3, 2010

I am on Android 2.1 and I have one multi column Custom listview Using BaseAdapter with an editable edittext at the end of the listview. If the data in the listview do not contain the data of user choice then user should be able to enter data. If the data is already there in the list user will be able to select the data using custom selector. If a selection is made in the list view and user wanted to enter data in the text field at the bottom after selection then the marker in the list view should be unselected. I tried to use onclick() method on edit text using click listener. First time when it is clicked, edit text is getting focus and onclick() method is not fired. And when it is clicked second time, onclick() method is fired and notifyDataSetChanged() method is called. I tried to call the notifyDataSetChanged() method from the Focus Listener, list view selection is gone in my first attempt and edit text is not receiving any data input from the keyboard (frozen).

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Android :: SQLite For Android Custom Table View (SQL VIEW) Discrepancy?

Jul 16, 2010

I've created a custom view in an SQLite database for an Android application. I'm using Sqliteman on Ubuntu to test my SQL statements before I put them in my app. I'm trying to do a simple select statement on my view. The select statement works fine in SQLiteman but when I put the same statement in my code it throws an error. The statement: select * from item_view where parent_item_id = 0;........

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Android :: Changing Displayed State Of Views Based On Parent ViewGroup's State

Aug 11, 2010

I have a compound UI component built up from a ViewGroup containing a number of TextView, ImageView etc. components. Many of these have StateListDrawables as their images/backgrounds. Is there any way of making them select from this drawable based on the state of the parent ViewGroup rather than the component itself? Ideally I want to be able to change the visual state of all children of the ViewGroup (text colour, image etc) based on the state of the ViewGroup, preferably without having to hook up complex logical code. This seems like a fairly common sort of requirement, so I was hoping it would be straightforward in Android - am I going to be disappointed?

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Android :: Style Own Styleable With A Style - Custom View Class With Custom Attribute

Jul 8, 2009

I'm creating my own View class, and defining custom xml attributes with a attrs.xml. As long as I provide each attribute manually, there is no problem, but

code:...................

The android:text is properly set in my instance, but the borderDrawable is not. I guess this has something to do with namespaces, because inside the styles.xml, the name="mypack:borderDrawable" is not handled by the XML parser's namespace facility, because its inside an attribute value. So "mypack" is in no way connected to "http://some.weird.url.com/seems/not/to/ matter" and adding it via xmlns:mypack... to the stylefile would not help, I guess. In the same file, "android:text" is somehow recognized, even though "android" is AFAIK only a ns-defintion for [url], which is also not declared in that file.

So what is the proper way to set a custom attribute in a style?

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Android :: Phone State Listener State Transitions

Feb 8, 2009

I'm a little confused by what I'm seeing with regards to phone state transitions via the PhoneStateListener. When I receive a call, this is what happens: (call comes in) RINGING -> IDLE (I pick up) OFFHOOK (I hang up) IDLE It's that first transition from RINGING to IDLE without any interaction from me (not ending the call, not answering the call) that confuses me. Do I really have to implement an idle counter to know that an incoming call has really ended? Seems like the reported phone state represents some sort of phone state that isn't the obvious one.Is this a bug or am I just not in tune with the paradigm here?

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Android :: Activity Constructor Vs OnCreate

Jul 21, 2010

I understand that Android Activities have specific lifecycles and that onCreate should be overridden and used for initialization, but what exactly happens in the constructor? Are there any cases when you could/should override the Activity constructor as well, or should you never touch it?

I'm assuming that the constructor should never be used because references to Activities aren't cleaned up entirely (thus hampering the garbage collector) and that onDestroy is there for that purpose. Is this correct?

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Android :: NinePatchDrawable Constructor - Chunk And Padding

Mar 2, 2009

I am trying to create a NinePatchDrawable programmatically, but there is no documentation on the constructor's argruments (Bitmap bitmap, byte[] chunk, Rect padding, String srcName). Does anyone know what chunk and padding are... and how to specify them?

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Android :: Calling Superclass Method In Subclass Constructor

Apr 30, 2010

I get a NullPointerException calling a Superclass Method in Subclass Inner Class Constructor... What's the Deal?

In my application's main class (subclass of Application), I have a public inner class that simply contains 3 public string objects. In the parent class I declare an object of that inner class.

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

After I instantiate the object in the constructor, I get a runtime error when I try to assign a value in the inner class with a superclass method.

Can you not call superclass methods in the subclass constructor?

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