Android :: How To Serialize An Object / Save It To File In Droid?

Nov 7, 2010

Say I have some simple class and once it's instantiated as an object I want to be able to serialize its contents a file, and retrieve it by loading that file at some later time.. I'm not sure where to start here, what do I need to do to serialize this object to a file?

Android :: How to serialize an object / save it to file in droid?


Android :: How To Save An Object To File?

Sep 2, 2010

Does someone know how to save and restore an object to a file on android ?

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Android :: Serialize A Class And Save It Somewhere With A Name / Tag?

Sep 1, 2010

Anybody can explain me how to serialize easily a class/object and save it under a name or tag for restoring later ?

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Android :: Convert A File Object From Droid?

Dec 5, 2009

I have a library that takes a File object as a parameter to one of the functions.

I am getting the file like this:

this.openFileOutput("myFile", MODE_PRIVATE)

I need to load this file from the system, however, I don't know how to convert FileOutputStream to File. Or is there another way of doing this?

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Android :: Save Reference To An Object?

Apr 2, 2010

I have a Timer in my application, and would like to allow the user to set the timer, and maybe cancel it in another execution of the application. To do that, I need to have a reference to the Timer created in the first execution. How can I obtain that? Is there a way of storing/retrieving memory addressed?

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Android :: Serialize An Intent In Droid?

Jul 19, 2010

I want to serialize an intent after i rcv it using ObjectOutputStream , but i got this exiption

java.io.NotSerializableException: android.content.Intent

is there away so i could serialize the intent.

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Android :: Save Variable And ArrayList Of Object

Dec 1, 2009

I created an application with loging and an arraylist to fill a ListView.

If i am calling or i need to check my mail, sometimes i lost the context of my application (variables and the listview !)

It is a little complex to save arraylist in SharedPreferences and i am not an expert in SQLite.

Do you know a solution to keep persistent my data (variables and the arraylist) during the use of my application?

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Android : Takes Drawable Object - Scale Image - Save Memory?

Aug 23, 2010

I need to know how he takes drawable object. I'm collecting some ImageView objects in array, they have background images that are rather big in resolution so they take lot of memory...

I have read somewhere that it will automatically create image with resolution that my imageView have, so i think it will take less memory than first one. Please tell me, if i set scaleType property, will it scale that image? Will that help me to save memory?

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Android :: Library / Method To Serialize - Deserialize Java Bean To Json In Droid?

Aug 2, 2009

Do you know a library or method to serialize / deserialize Java bean to json in android?

how i can introspect a javabean and fill its fields?

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Android :: How To Convert A URI To File Object?

Feb 28, 2010

I want to convert this into a File object, and only a File object - I need to pass it to another constructor that requires a File. How can I convert a URI like this to a File object? If I try File newFile = new File(myURI);I get an error in Eclipse suggesting that I should convert the URI to a String. Supplying URI.getPath() in the constructor doesn't help either.

This relates to the 'How can I convert android.net.uri object to java.net.uri object?' question, which unfortunately seems to have no good answer, but I want a File object out, not a java uri. I don't mind if I have to write it to a bytestream and back again - whatever is the best way.Apologies if I'm cross-posting my own question, but I thought I might need to make things a bit clearer.

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Android :: Construct Typeface Object From File?

Mar 23, 2009

Does anyone know how to construct a typeface object from a file? Say i have a .ttf file on the SD card, how do i load it into my app?

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Android :: Create A 'View' Object From A Xml File?

Mar 9, 2009

In the Tab2 of TabActivity in the APIDemo example, it has this method to create a View object for each tab. code...

Can you please tell me how can I create a View for each tab from an xml layout file? For example code...

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HTC Droid Eris :: Save Emailed PDF File

Feb 2, 2010

I recently recieve my first email with an attachment on my Eris. It was a PDF file, I was able to open and view it. I cannot find a way to save it. Do I have to archive the email and go about getting it that way every time?

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HTC Droid Eris :: Where Does Background File Save?

Nov 18, 2009

I downloaded the Backgrounds App and found really cool background that I really like. I'd like to save the file so I can change it to a different background but go back to my current background later. Does anyone know where the file saves to?

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Motorola Droid :: App To Save Audio File From SMS?

Jan 9, 2010

I'm sure this has been addressed, but I can't find where...I want to save an audio file a guy sent me via SMS...but can't figure out how...Is there an app? Or am I missing something?

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Motorola Droid X :: Get Apps Off And Save On To Computer As APK File?

Jul 25, 2010

i used to have the old droid and i bought the app "imusictao" and its now gone in the market place for some reason... so i was wondering how can i get it off my old droid to put it on my droid x? i know there is some way to get it off the phone as an APK file, there has to be an app or a method.. so can someone please help me out and figure how to get the app off my old phone

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Motorola Droid : Want To Save HTML File With Extension?

Jun 13, 2010

I don't know if this is just a fluke or what, so I figured I'd come here and get some input. I have a locally saved HTML file with extension .HTML, which I had pulled from my Drop Box account, but I can never open it properly. Using Estranges, I just get a "cannot load" or something-or-other page. However, if I go to the stock browser and input file:/// plus the path... no problems. Any ideas as to the problem here? Really a hassle.

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HTC Droid Eris :: Save A Text Message / Containing .mp3 File As A Ringtone?

Jan 3, 2010

Does anyone know how to save a text msg. containing a .mp3 file as a ringtone. I had an Env2 and was able to send and receive text msg's with .mp3 and save them as ringtones but can't figure it on my new Android.

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Android :: Way To Serialize A Bundle?

Apr 8, 2010

I'd like to serialize a Bundle object, but can't seem to find a simple way of doing it. Using Parcel doesn't seem like an option, since I want to store the serialized data to file. Any ideas on ways to do this? The reason I want this is to save and restore the state of my activity, also when it's killed by the user. I already create a Bundle with the state I want to save in onSaveInstanceState. But android only keeps this Bundle when the activity is killed by the SYSTEM. When the user kills the activity, I need to store it myself. Hence I'd like to serialize and store it to file. Of course, if you have any other way of accomplishing the same thing, I'd be thankful for that too.

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Android :: Code To Serialize Manually A Class?

Sep 2, 2010

I want to serialize my class. I have this code...

I apparently need to implement :

private void writeObject(java.io.ObjectOutputStream out) throws IOException

private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException

Anyone know what I should do in these function ?? How should I write my Bitmap variable ?Any code examples ? anyone did it ?

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Android :: How To Serialize Double Value When Calling Soap Service?

Nov 19, 2010

I am having one web service and I have call that from the Android application by passing double value along with other values like String, int and float. When i call the web service I am getting Runtime exception saying cannot serialize the double value. Please some one help me to do call the web service if you know the solution.

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Android :: How Can I Get Current Activity Object In Instrumentation Object?

Sep 9, 2009

I want to do some automated testcase with Instrumentation . Suggest that my AUT has 2 Activity. After clicking the button in ther first Activity, the second one will be shown with new content base on what we enter in the first Activity.) Instrumentation provides us the function called startActivitySync() and return the Activity object for processing. My question is how we can get the pointer of the second Activity after the it is shown by clicking the button on the first activity.?

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Android :: Cast Picture Object To Bitmap Object

Jun 8, 2009

I would like to convert a Picture object to Bitmap object in memory, without writing data to disk.

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Android : Get Activity Object From Intent Object

Sep 21, 2009

I have an Activity that running on system. I can get the Intent that is used to start the activity. But i don't know how to get the Activity object from the Intent object or something else. Can anyone tell me how to do this??? Note that, I don't use Instrumentation object.

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Android :: Image Transparency - Load An Image File Into An ImageView Object

Aug 24, 2010

Is there a way to load an image file into an ImageView object, and then define a transparent color for this object?

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HTC EVO 4G :: "Unable To Save File To SD Card Due To Insufficient File Permissions" / Cause Of This?

Jun 7, 2010

"Unable to save file to SD card due to insufficient file permissions."

This is the message I get when I try to take pictures. I have only taken 9 shots so far. There was no problem until yesterday when i tried to take the tenth. Did I do something to cause this? I am not that tech smart

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Android :: Save File To Sd Card?

Apr 22, 2010

I am trying to find the best way to save files to the phone. Basically I have an XML file on a web server that I would like to be able to save on the phone. Should I create a specific folder in my project to save to and if so how do I save the file. Or should I make it to where when you click the Save button it checks for an SD card and if there is and SD card create a folder (if one isn't already there) and save the file in the new folder or save it to the phone? If someone could explain the most efficient way of saving files for my app and how to save the file from the web server I would greatly appreciate the insight. Any tutorial links would be awesome.

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Android :: How To Save DOM Document Into Xml File?

Sep 9, 2009

I'm using org.w3c.dom.Document to create a document and I need now to write it into a .XML file. I saw tutorials referring the Java.XML.transform.Transformer package but this one is not available in the Android platform.

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Android :: Way To Save A Picture To File?

Mar 16, 2010

I'm trying to use a standard Intent that will take a picture, then allow approval or retake. Then I want to save the picture into a file.

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Android :: Cannot Save Picture / File Not Get Written

Apr 23, 2010

I am still not able to save a picture when I send an intent asking for a photo to be taken. Here's what I am doing:
Make a URI representing the pathname
android.content.Context c = getApplicationContext();
String fname = c.getFilesDir().getAbsolutePath()+"/parked.jpg";
java.io.File file = new java.io.File( fname );
Uri fileUri = Uri.fromFile(file);
Create the Intent (don't forget the pkg name!) and start the activity

private static int TAKE_PICTURE = 22;
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE );
intent.putExtra("com.droidstogo.boom1." + MediaStore.EXTRA_OUTPUT, fileUri);
startActivityForResult( intent, TAKE_PICTURE );
The camera activity starts, and I can take a picture, and approve it.
My onActivityResult() then gets called. But my file doesn't get written.
The URI is: file:///data/data/com.droidstogo.boom1/files/parked.jpg
I can create thumbnail OK (by not putting the extra into the Intent), and can write that file OK, and later read it back).

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