Android :: How To Display An ArrayList?

Sep 9, 2009

I'm new to android developing and I've done a function which return an arraylist type ArrayList<ArrayList>. I would like to display this arraylist for see if my function work.

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Android :: ArrayList In Custom View?

Oct 9, 2010

I'm writing my own custom view, a keyboard, which I think the ArrayList in the keyboard view is causing the application to quit in the emulator.
public static ArrayList<HexButton> hexButtons = new ArrayList<HexButton>();

The application ran fine when I did
setContentView(myKeyboardView);

But I want to nest my keyboard with a TextView so I'd like to be able to do
setContentView(R.layout.main);

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Android :: Passing An ArrayList Of Objects

Nov 12, 2010

Is there a way to pass an Array List of objects between activities? The myObject implements Parcelable and I'm able to successfully pass the objects around individually, but that means I need to have an exact amount of "myObjects" coded. I want this to dynamically grow/shrink by what the user does with the app. I have seen some posts on the web about doing:

Activity A
ArrayList<myObject> myObjArray = new ArrayList<myObject>();

Then when passing this into the intent I would use:
intent.putParcelableArrayListExtra("myObjArray", myObjArray);

Activity B
ArrayList<myObject> myObjArray = new ArrayList<myObject>();
Bundle extras = getIntent().getExtras(); myObjArray = extras.getParcelableArray("myObjArray");

However, the myObjArray always gets filled with "null". How can I achieve this?

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Android :: Passing ArrayList Across Activities

Apr 7, 2009

I have an ArrayList<MyList> aList in an activity. I would like to send this data to another activty. Such that,
ArrayList<MyList> aList;
Intent intent = new Intent(); intent.setClass(mainactivity.this, newActivity.class); intent.putExtra("MyList", aList ); startActivity(intent);

On the receiving activity,
Intent i = getIntent(); newList = (ArrayList<MyList>) i.getSerializableExtra("MyList");
But this gets me no where. ERROR! My intention is to share this List between activities.

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Android :: Arraylist Storage In SQLite

Nov 16, 2009

Can any one tell me how to store and retrieve arraylist in/from sqlite.
ArrayList<Double> results = new ArrayList<Double>();

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Android :: Custom ArrayList Serialization

May 30, 2010

I was trying to serialize an ArrayList which contains custom objects. I'm serializing it in a Servlet (server side), and deserialize at the client side. (using ObjectOutputStream and ObjectInputStream)

It worked fine, when I work with ArrayList<String>.
But when I tried it with ArrayList<MyObject> I couldn't get any results in the client side, this is the exception:
java.lang.ClassNotFoundException: web.MyObject

Of course I have done this:
public class MyObject implements Serializable { ... }
MyObject contains only String fields.

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Android :: ArrayList & Contains() - Case Insensitive

Jun 8, 2010

I want the contains() method from ArrayList to be case insensitive. Is there any way?

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Android :: Share An Arraylist Between Applications

Jun 15, 2010

I have two applications which i want them to share the same arraylist.

How could i achive something like that? is there anything in Android for sharing such a prefrenceses?

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Android :: Correct Way To Add Objects To An ArrayList

Aug 19, 2010

I am trying to add an object to an arraylist but when I view the results of the array list, it keeps adding the same object over and over to the arraylist. I was wondering what the correct way to implement this would be.

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

I have double checked my JSONArray data and made sure they are not duplicates. It seems to keep adding the first object over and over.

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Android :: Save The Contents Of An ArrayList?

Aug 26, 2010

I want to save an ArrayList so that it is persistent. The contents can change. What is the best way of approaching this in android?

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Android :: How To Pass ArrayList Using PutStringArrayListExtra()

Oct 27, 2010

I want to pass an Arraylist from one activity to another. I use putStringArrayListExtra(), but there shows an error : "The method putStringArrayListExtra(String,ArrayList is undefined for the type bundle." Is there any other method available for passing ArrayList?

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

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Android :: Can't Add Item To Arraylist With Bottonclick / How To Do

Sep 1, 2010

Something is wrong whit my code. in application when I "add item", it doesn't show anything, and if aim clicking somewhere around the android application, then "item" sometimes comes. code...

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How To Get String Tokenizer Tokens Into ArrayList

Jun 8, 2012

I am in the mid of my application where i have used multidimensional String array

String 1= "A", "10", "XYZ";
String 2 = "B", "20", "PQR";

i am able to split values by using StringTokenizer i.e.

stringTokeniser 1= A
stringTokeniser 2= B
stringTokeniser 1= 10
stringTokeniser 2= 20
stringTokeniser 1= XYZ
stringTokeniser 2= PQR

Now i want to display those values i.e. A, B in one column

10,20 in second and XYZ, PQR in third column respectively.

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How To Put Array Populated By Other Activity To Arraylist

Jan 11, 2013

I am developing some application for android and i have problem.

I push data with button click from another activity with intent to string of first activity, and i put from that string these data to listview by a adapter, and it is all ok, i mean i see on listview that data, but when i want to add new item in listview by click of button of second activity, i mean do again same thing, there is a problem: that data i push by a second button click replaces first button click data, and i want to add that data under first data in another listview row?

here is code of activity where is a listview:

package com.example.kupi;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import android.R.array;
import android.app.Activity;

[Code] .....

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Android :: Displaying Certain Data Of Object In ArrayList?

Apr 7, 2010

I wish to display data in the the arraylist in a list view. The arraylist is not a generic list but a object defined by me. I want to display only certain data of the object. Something like, an object of a student, I want to display the student's name only, the student id and the student dob is not required.

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Android :: Code Which Would Be Much Easier Implemented As ArrayList

Apr 3, 2009

I notice in the source code they are not used in critical loops, e.g. in View.java :
http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;...
I can see this kind of code which would be much easier implemented as an ArrayList :

1867 private void addInArray(View child, int index) { 1868 View[] children = mChildren;
1869 final int count = mChildrenCount;
1870 final int size = children.length;
1871 if (index == count) { 1872 if (size == count) { 1873 mChildren = new View[size + ARRAY_CAPACITY_INCREMENT];
1874 System.arraycopy(children, 0, mChildren, 0, size);
1875 children = mChildren;
1876 } 1877 children[mChildrenCount++] = child;
1878 } else if (index < count) { 1879 if (size == count) { 1880 mChildren = new View[size + ARRAY_CAPACITY_INCREMENT];
1881 System.arraycopy(children, 0, mChildren, 0, index);
1882 System.arraycopy(children, index, mChildren, index + 1, count - index);
1883 children = mChildren; 1884 } else { 1885 System.arraycopy(children, index, children, index + 1, count - index);
1886 } 1887 children[index] = child;
1888 mChildrenCount++;
1889 } else { 1890 throw new IndexOutOfBoundsException("index=" + index + " count=" + count);
1891 } 1892 };

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Android :: Pass ArrayList Parameters Between Two Activities

Apr 19, 2010

Today I met a problem, I need to pass a ArrayList<MyClass> from an activity to another. I dont know what the Intent exactly do when I use putExtra to pass in an ArrayList<MyClass> object. I guess MyClass need to implement Parcelable interface, so I just did it. But still, it does not work. Maybe I need to create a Bundle and then use Bundle's putParcelableArrayList method to put my ArrayList<MyClass> object in, and then pass this bundle as parameter of putExtra to the intent. So crazy! I am lazy, I just want to pass an ArrayList<MyClass> object simply, is there a simple way??

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Android :: Using SAXParser To Get List Of Strings To Arraylist

Jun 21, 2010

I'm trying to parse a web service response using SAXParser and get certain values, store them into an arraylist, then display them in a listview. Example XML being returned from web service:
<ArrayOfStrings>
<string>value</string>
<string>value</string>
<string>value</string>
</ArrayOfStrings>

Here is my SAXHandler class:
public class SAXHandler extends DefaultHandler {
private boolean outertag = false;
private boolean mytag = false;
ArrayList<String> alist;
public ArrayList<String> getList(){
return this.alist;
} @Override
public void startDocument() throws SAXException {
} @Override
public void endDocument() throws SAXException{
} //@Override
public void startElement(String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
if (localName.equals("ArrayOfString")){ this.outertag=true;
}else if (localName.equals("string")){ this.mytag=true;
} }
@Override
public void characters(char ch[], int start, int length) {
if (this.mytag){ String s = new String(ch, start, length);
alist.add(s);
} }
@Override public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
if (localName.equals("ArrayOfString")){ this.outertag=false;
}else if (localName.equals("string")){ this.mytag=false;
} } }

And here's my method calling and returing my web service:
try{ URL url = new URL("xxxxxxx");
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
SAXHandler SAXHandler = new SAXHandler();
xr.setContentHandler(SAXHandler);
xr.parse(new InputSource(url.openStream()));
ArrayList<String> stateList = SAXHandler.getList();
aa = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, stateList);
RESTlist.setAdapter(aa);
I keep getting an exception and I don't know why. Can anyone give me a hand?

Logcat:
06-21 20:10:47.901: ERROR/AndroidRuntime(472): Uncaught handler: thread main exiting due to uncaught exception
06-21 20:10:47.950: ERROR/AndroidRuntime(472): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.pa.passammain/com.pa.passammain.RESTtest}: java.lang.NullPointerException: println needs a message
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.app.ActivityThread.access$2100(ActivityThread.java:116)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.os.Handler.dispatchMessage(Handler.java:99)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.os.Looper.loop(Looper.java:123)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.app.ActivityThread.main(ActivityThread.java:4203)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at java.lang.reflect.Method.invokeNative(Native Method)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at java.lang.reflect.Method.invoke(Method.java:521)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at dalvik.system.NativeStart.main(Native Method)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): Caused by: java.lang.NullPointerException: println needs a message
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.util.Log.println(Native Method)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.util.Log.e(Log.java:208)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at com.pa.passammain.RESTtest.onCreate(RESTtest.java:82)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
06-21 20:10:47.950: ERROR/AndroidRuntime(472): ... 11 more

After editing how my error is displayed in my try/catch i'm not longer getting an exception, but just a blank screen. Here is what my logcat is displaying:

06-21 20:22:00.330: WARN/System.err(542): java.lang.NullPointerException
06-21 20:22:00.352: WARN/System.err(542): at com.pa.passammain.SAXHandler.characters(SAXHandler.java:45)
06-21 20:22:00.352: WARN/System.err(542): at org.apache.harmony.xml.ExpatParser.text(ExpatParser.java:166)
06-21 20:22:00.362: WARN/System.err(542): at org.apache.harmony.xml.ExpatParser.append(Native Method)
06-21 20:22:00.371: WARN/System.err(542): at org.apache.harmony.xml.ExpatParser.parseFragment(ExpatParser.java:506)
06-21 20:22:00.371: WARN/System.err(542): at org.apache.harmony.xml.ExpatParser.parseDocument(ExpatParser.java:467)
06-21 20:22:00.371: WARN/System.err(542): at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:329)
06-21 20:22:00.381: WARN/System.err(542): at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:286)
06-21 20:22:00.381: WARN/System.err(542): at com.pa.passammain.RESTtest.onCreate(RESTtest.java:71)
06-21 20:22:00.391: WARN/System.err(542): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
06-21 20:22:00.391: WARN/System.err(542): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
06-21 20:22:00.401: WARN/System.err(542): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
06-21 20:22:00.401: WARN/System.err(542): at android.app.ActivityThread.access$2100(ActivityThread.java:116)
06-21 20:22:00.410: WARN/System.err(542): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
06-21 20:22:00.410: WARN/System.err(542): at android.os.Handler.dispatchMessage(Handler.java:99)
06-21 20:22:00.420: WARN/System.err(542): at android.os.Looper.loop(Looper.java:123)
06-21 20:22:00.420: WARN/System.err(542): at android.app.ActivityThread.main(ActivityThread.java:4203)
06-21 20:22:00.420: WARN/System.err(542): at java.lang.reflect.Method.invokeNative(Native Method)
06-21 20:22:00.430: WARN/System.err(542): at java.lang.reflect.Method.invoke(Method.java:521)
06-21 20:22:00.430: WARN/System.err(542): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
06-21 20:22:00.442: WARN/System.err(542): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
06-21 20:22:00.442: WARN/System.err(542): at dalvik.system.NativeStart.main(Native Method)

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Android :: Passing ArrayList - String - Between Tabs

Jun 5, 2010

I'm not very clear about the Intent object and how to use it to pass data between Activities. In my application I have several tabs between which I want to pass ArrayList. Here is a sample code I plan to use, but I'm missing the part where the main activity catches the Intent and passes it to the new activity on start :

1. myTabs.java ==> This is where I think I need to add some code to pass the data between TabOne and TabTwo. For now it is just using the sample code of the TabActivity sample.

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

2. TabOne.java ==> I added a piece of code in the onStop procedure to fill in the Intent data with the array I want to pass to TabTwo. Not sure it is the right way to do though.

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

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Android :: Adding ArrayList Of LinearLayout Objects To UI

Jan 27, 2010

I am trying to use the following code to go through an ArrayList of LinearLayout objects, add each one to a TableLayout, and finally add that TableLayout to a ScrollView defined in the main.xml file.

ScrollView theScrollView = (ScrollView) findViewById (R.id.scroll_view); TableLayout theList = new TableLayout(this); ArrayList<LinearLayout> theArray = Edit.getTheArray();

if (theArray.size() > 0) { for (int i = 0; i < theArray.size(); i++) { theList.addView(theArray.get(i)); } theScrollView.addView(theList); }

A second activity (Edit) is used to convert user input into a new LinearLayout and put it in the ArrayList. The code works successfully on the first item in the Array, however, after adding a second LinearLayout to the ArrayList and returning to the main activity, I get a force close and the following error: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

I can't seem to figure out what is happening here. Is there another method I should be using to get my desired results?

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Android :: Adding To The Middle Of An Empty ArrayList

Aug 26, 2010

If I create a new arraylist of size 5...

And then I try to add to the middle of that arraylist...orderedPlayers.add(2, P);


I get an indexoutofbounds...I also get indexoutofbounds if I use set instead of add...orderedPlayers.set(2, P);


In fact the only way I can add P to the arraylist is if I use the 0 index...orderedPlayers.add(0, P);

And also for some strange reason when I do that my debugger in eclipse sees that element added to the 4th index of orderedPlayers instead of the 0th... is ArrayList buggy or am I completely missing something? how would I add to the middle of a null ArrayList?

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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 :: ArrayList Populated With Last Elements Data?

Jul 1, 2010

I am using the Android onTouchEvent to register touch and the associated movement. I then want to iterate a sprite along that path.

I need to store the path traced by the finger for use later on.

The problem is that after the finger is lifted off the screen the ArrayList (pArray) is completely populated with the X & Y position of the ACTION_UP coordinates.

From the Log i can see that it is adding the current X & Y position to the Arraylist while the finger is moving which is great but then the Arraylist gets overwritten by the data in Arraylist.size() - 1...

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

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Android :: Remove Duplicate Value From Arraylist In Droid

Dec 10, 2009

I have a ArrayList

ArrayList<String> values=new ArrayList<String>();
values.add("s");
values.add("n");
values.add("a");
values.add("s");

In this i want to remove repeated value.

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Android :: Get A Tables Columns Arraylist On Droid?

Mar 4, 2010

I am after a code to get the available column names of a table in Android?

I looked around and didn't find anything.

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Android :: Binding A Ksoap Object To An ArrayList?

Apr 13, 2010

I'm working on an app that calls a web service, then the webservice returns an array list. My problem is I am having trouble getting the data into the ArrayList and then displaying in a ListView. Any ideas what I am doing wrong? I know for a fact the web service returns an ArrayList. Everything seems to be working fine, just no data in the ListView or the ArrayList.....donned on me that the data the webservice responds with is a complex type. I really think that's where I am getting hung up, but not sure how to correct it.

I finally figured out my webservice returns a JSON Array. Now getting that over to the ArrayList and/or ListView is the challenge. I have a feeling that once this project is done, it might make for a great tutorial or example...

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

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Android : Way To Parse JSON Object Into ArrayList / Map?

Jul 14, 2010

Is there any way to parse JSON object, that comes from facebook server in a response, into ArrayList or Map so that i can set values in my ListView. I am finding difficulty in parsing because JSON object itself contains JSONArray and this Array can contain JSONObject may be in recurcive order.

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Android : Create A ListView Layout From An ArrayList?

Jul 4, 2010

What I want to do in one of my tabs in my application is have a ListView of contacts. Though, in that example, the ListView is made from an array of Strings. Is there a way that I can create one of those using the values from an ArrayList?

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Android : Populate An ExpandableList With ArrayList Of Hashmaps?

Nov 7, 2010

Can anybody tell me how to populate an Expandable List with Array List of Hash maps. Actually i have made a tree Data structure and i want to use my Data Structure to populate the Expandable List....

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How To Get Previous Filled ArrayList Data Entries

Jun 9, 2012

I am working on android app where user fill application form in which he has to feel entries like user name, Roll No, Location etc.I have given two button prev and next....Now i want to do When user filled up the form and clicked on next button he will navigate to next page and when he clicked on prev button he will get same information that he was filled before i.e. user name, Roll No, Location.

I have used arraylist to store values that supposed to captured in form..EX. Button A= Name, Button B= RollNo, Button C= Location for 'n' no of times i.e. if i entered 10 such records and clicked previus button 2 times then it suppose to show that values only....

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Saving Values From (Float) ArrayList Into A Bundle

Dec 4, 2012

I'm writing a game using Surfaceview and have a question relating to saving Data into a Bundle.

Initially, I had an arraylist which stored the Y co-ordinates (in the form of Integers) of sprites that will move only up and down. Declared as:

Quote:

static ArrayList<Integer> ycoordinates = new ArrayList<Integer>();

I saved them to a Bundle using the following:

Quote:

myBundle.putIntegerArrayList("myycoordinates", ycoordinates);

And restored them using this:

Quote:

ycoordinates.addAll(savedState.getIntegerArrayList ("ycoordinates"));

This all worked perfectly. However, I've had to change the whole coordinates system so it's based on Delta time to allow my sprites to move at a uniform speed across different screens. This is, again, working perfectly.

However, as a result of this change, I now have to store these values as floats rather than integers.

So, I am declaring as:

Quote:

static ArrayList<Float> ycoordinates = new ArrayList<Float>();

So that's the background, now my question is, how do I store and restore values from a Float Arraylist? There doesn't seem to be a "putFloatArrayList" or "getFloatArrayList".

(I've used an Arraylist rather than an Array as the number of sprites needs to be dynamic).

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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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Android :: Saving ArrayList Of User Defined Objects

Aug 10, 2010

I am working on an application where I am saving the state of an application in an ArrayList. Now, to save this state, I tried to use Serialization. But, somewhere in the user defined object, I am using Button, which is not letting me serialize the entire object. I wanted to know, is there any other way of saving this array list between onPause and onResume? I even tried onSaveInstanceState, but it doesn't have support for Array List.

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Android :: Adding Group ArrayList Into Single One / How To Recognize Each?

Oct 28, 2010

Can I add a group of ArrayList into a single ArrayList? The ArrayList groups are of different sizes. Then How can I recognize each ArrayList?

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Android :: Twitter Application - Retweet With UserID In Arraylist

Sep 2, 2010

I am new to twitter .I like to develope one twitter Application.

The methods to be used for replying the tweets.
How to retweet with userID in arraylist

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Android :: Way To Send ArrayList Of Custom Objects In Bundle?

Sep 16, 2010

I have an application that uses a service to create an ArrayList of custom objects (MyObject) every x seconds. I then want my Activity to obtain this ArrayList. I'm currently planning on having the Service send a message to the Activity's handler every time it finishes the query for the data. I want the message to the Handler to contain the ArrayList of MyObjects. When building the method in the Activity to get this ArrayList out of the message, I noticed that I couldn't.

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Android :: Adding To ArrayList In Characters Method Of DefaultHandler SAX

Jun 30, 2010

I'm assuming that your input XML is very simple and uses no element attributes, namespaces, or recursively nested elements. I recommend you use the following pattern, which I've used countless times:

Use a StringBuffer or StringBuilder to collect character data. Initialize it in startElement. In the characters method, do only the following: sb.append(ch, start, length). Please note that SAX parsers are not required to return the full contents of a text node in a single call to characters(). For efficiency, the parser may use an input buffer which may be smaller than a particular text node. A lot of people seem to miss this. Do the major processing in the endElement() method.

Do you use a debugger to step through your code?

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Android :: ListActivity With ArrayList Of Objects As Layout Resource

Nov 23, 2010

I need to display a list of categories from a ListActivity. My data source is a ArrayList of type Category which is implementing the android Parcelable interface. stucture is given at the bottom. it has an id and a title

I need title to be displayed as list text and on clicking the list item, i need to get the id for further processing

It is possible to create a new array of 'title's by iterating the category ArrayList and use

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

But bu using this method i will get only the title of the category upon click and not the id.

Is it possible to directly use the ArrayList of objects as data source?

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

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Android :: Insert ArrayList In To Droid SQLite Database?

Sep 15, 2010

I have array list of geopoints

List<GeoPoint> geoPointsArray = new ArrayList<GeoPoint>();

I want to put geoPointsArray array in to SQLite database and then fetch the data back as an array.

Now I use ContentValues for insert into array as:

ContentValues initialValues = new ContentValues();
initialValues.put(KEY_TIME, time);
db.insert(tableName, null, initialValues);

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Android :: Return ArrayList From .net Web Service To Droid App Using KSoap?

Jun 9, 2010

My web service is returning quite a bit of data, so i'm storing it in an arraylist and returning that to my application. I don't know whether or not this is the preferred method or not. When the arraylist is returned and displayed in my application, it also displays the arraylists "anyType" section. I'm new to this whole process so i'm sure i'm missing something somewhere or going about this incorrectly. Can anyone point me in the right direction please?

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Android :: Deserializing ArrayList Of Non-generic Type Using GSON

Jul 6, 2010

I'm trying to deserialize json data to an ArrayList of Restaurant object as follows (inpsired by what I found in https://sites.google.com/site/gson/gson-user-guide#TOC-Collections-Examples):

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

But this gives the error shown at the end of the post.

It seems that there is some null pointer in listType... Here's a watch of listType:

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

What's wrong with my code? How can I do that?

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

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Android :: ArrayList IndexOf() Returns Wrong Index?

Jun 24, 2010

I have a problem with ArrayList. I'm using ArrayList like this:

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

Where Playlist is a class inherited from another ArrayList.

I do the following:

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

Later, when I use 'p' to get the index in the list:

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

an index of '1' is returned, even though inspection of the list clearly shows that it's index '4'.

why this fails?

Same problem without indexOf(), using equals():

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

New edit:
This WORKS:

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

Solution:
As suggested, I changed the Playlist class to not enherit from ArrayList, but rather keeping an instance privately. It turned out that I only had to implement 4 ArrayList methods.

This does the trick; Now indexOf() returns the correct object!

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Android :: Saving ArrayList To Txt File / Data Folder Empty

Apr 25, 2010

I am trying to save an arraylist to a .txt file below is the code I am using, which runs without error but when I try to go to Astro file manager and browse the data folder there is nothing there.

String filename = stationname.getText().toString() + System.currentTimeMillis();
FileOutputStream fos = openFileOutput(filename,Context.MODE_PRIVATE);
ObjectOutputStream out = new ObjectOutputStream(fos);
out.writeObject(report);
Report is the ArrayList that holds each of my station Reports.
out.close();

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Android :: Saving An ArrayList (String) State In SQLite Database

Jul 9, 2010

I'm working on a android application that will display Strings to the user, and the user then has the option to add one to a favorite list. I have searched and searched and cannot find the proper way of doing this. I did get one open source project, everything worked until the user removed a favorite. The database would clear the row of data, but when a new row is added, it would behave as if the deleted row still had data, leaving blanks in the favorite list.

This is my insert method
public long insertString(String newString)
ContentValues newStringValue = new ContentValues();
newStringValue.put(KEY_STRING, newString);
return db.insert(DATABASE_TABLE, null, newStringValue);

The long returned will always increment even if i use the remove method:
public boolean removeString(long _rowIndex)
return db.delete(DATABASE_TABLE, KEY_ID + "=" + _rowIndex, null) > 0;

If I try to remove the third index, and the user removed a question at the third index, the method returns false, is there a way to completely remove all rows with no data?

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Android :: ArrayList In Adapter Not Working / Using History Share Method

Nov 21, 2010

I retrieve Json data (the JSONArray) and I wanted to make a List of all the names in the JSONArray, something like this.
List list = new ArrayList<String>();
for(int i=0;i < data.length();
i++){list.add(data.getJSONObject(i).getString("names").toString());}

And I wanted to take this list in an `ListView' so I did this:
ArrayList<String> test = history_share.list;
names_list = (String[]) test.toArray();
ArrayAdapter<String> adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, names_list);
setListAdapter(adapter);

History_share is one of the method I created to take json data from an api. Eclipse doesn't see any error, and me neither.

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