Android :: Json Changes Order Of Elements / Fix It?
Oct 13, 2010
I am trying to send a list of objects from an android mobile phone app to a j2ee webserver.
I create json objects and then put the objects into an jsonarray(in an order) and then send it. I am able to receive the jsonarray on the server, obtain the objects individually too, but the order of how I inserted the objects into the jsonarray is different compared to the order present in the received array. The order of elements plays a crucial role in my data processing. Could somebody please tell me a workaround for this.
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Jul 29, 2010
I am trying to parse a json object using gson in Android application ,the test passed quite gracefully in emulator ,while i used the actual device ,the problems started.
I am getting the exception as follows.
CODE:...................
I am using gson 1.4 version.The code i use is:
CODE:..............
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Sep 24, 2010
What is "deserializing Json" means, I had seen this term on the Web. I don't know the meaning od this particular term So, it would be great if anybody can explain me about What it means actually?
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Nov 10, 2010
I'm trying to modify two TextViews in exactly the same way. I thought I can give them same id and with findViewById() and setText() methods change those TextViews in two lines. But it seems only one TextView is changed.Is there a way to do this?Or I have to make different ids for every element, get every element by findViewById() method and set it's text?
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Aug 23, 2010
I could not get any inner elements during the xml parsing. looks like parser see only outer tag A. Could you show me error?
CODE:.......................
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Apr 25, 2009
Just wonder what limitations there are for UI elements in AppWidgets? I tried a ListView and was met with an error. I saw the other post that EditText isn't available.Just wondering if there was a full list somewhere?
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Jun 1, 2010
I'm having trouble positioning the layout elements. The AutoComplete in my TableLayout and the button after it are expanding the TableRow larger than the width of the screen. Anyone have an idea why? Below is my XML code as well as a picture of the problem...
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May 4, 2010
I'm trying to create an rss feed that my droid app reads but i have some holes that i can figure how to fix the json link page is http://www.mandarich.com/mandarichServer/mlb/indexbaseball.php when reading the json i can see where the icon is missing on some and cant figure out why. mainly only for citys like ney york and chicago(cities with two names)
and the code i have for the php is as follows ...
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Sep 1, 2010
In my application I change layouts very frequently with most of the user interactions. Each time when a new layout is drawn, the applications memory size is increasing. I can see this in DDMS. This is absolutely fine. I have analyzed my application with memory analyze tool and it shows that there around 42 Table layouts at some point of time and this number increase as user does more interactions with the app. Now my question is why doesn't the GC collect the stale layout objects. Does GC collect on UI widgets also??? I feel it does but can any one tell me what may be the reason for GC not collecting my UI elements.
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Feb 3, 2010
I need to add some parts of my UI programmatically. I'm doing this because I need to set the ids of some elements up in such a way that they can be easily access in a for loop. So far I have this xml:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/attr_row" android:layout_width="fill_parent"
android:layout_height="wrap_content"> <EditText android:id="@+id/attr_name"
android:hint="Attribute" android:layout_width="0dip" android:layout_weight="2"
android:layout_height="wrap_content" android:inputType="textPersonName" />
<EditText android:id="@+id/attr_val" android:hint="Value"
android:layout_width="0dip" android:layout_weight="3"
android:layout_height="wrap_content" android:inputType="textPersonName" />
<ImageButton android:id="@+id/drop_attr" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="@drawable/btn_delete_states"
android:layout_gravity="center_vertical" /> </LinearLayout>
At the moment, I inflate this xml five times like so:
for (int i = 0; i<5; i++) { LinearLayout attrList = (LinearLayout) findViewById (R.id.attr_list);
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(R.layout.attr_row, null);
LinearLayout extraAttr = (LinearLayout) row.findViewById (R.id.attr_row);
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
attrList.addView(extraAttr, i, params); }
The link below shows two pictures - the layout hierarchy and the result in the emulator. http://picasaweb.google.com/bengoldcross/Android?authkey=Gv1sRgCJ785I...
As can be seen, the xml is inflated five times successfully but only one is actually displayed. Inspecting the hierarchy viewer a bit more explains why. The layout being displayed is at location x=0 y=111 all the others are being rendered at x=320 y=111. It would appear they are being displayed a) off screen and b) on top of each other. So, why are they and how do I stop it from happening?
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Jun 10, 2010
Here's a quote from Android's Dev Guide: A central feature of Android is that one application can make use of elements of other applications (provided those applications permit it). For example, if your application needs to display a scrolling list of images and another application has developed a suitable scroller and made it available to others, you can call upon that scroller to do the work, rather than develop your own. Isn't it a bad practice to make an app dependent on other apps?
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Oct 1, 2010
I was wandering if there was a easy way to do the following without android layout
place an image central top
place a button center center
place a button left bottom
place a button right bottom
it doesn't sound that difficult no ?
well I can't figure out a way to place the elements as I want using stupid xml layout.
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Aug 5, 2010
I have a database filled with records in the following format: . What I want my application to do is select records from an external database, and display those records on the phone screen using a SurfaceView.
Currently, I have an Activity, and a Service responsible for the record-gathering portion of the application. The Activity passes an intent to the Service, and the Service responds by returning the records that need to be displayed. The records are stored in my program as instances of the Data class, and merely have the screen-coordinates of where the element should be drawn in the View (I am just drawing a circle for every record in the DB).
For the sake of brevity, I won't include the service but I will include a skeleton of the Activity class and the Data that I wish to display.
CODE:.................
The problem that I am having pertains to the SurfaceView. I realize that many people are going to suggest that I use just a regular View, but my application involves a lot of elements, so a SurfaceView would be much more suitable for my needs. Below is a skeleton of my SurfaceView class that contains a nested class to manage the threads.
CODE:............
The problem that I'm having is that once I make the initial call to the Panel class, I'm going to be getting new records from the service, and consequently, my Info Map data-structure is going to get updated. However, my Panel class just gets stuck in a loop and never receives any new Data objects. All examples of SurfaceViews I've found have involved updating them methods within the SurfaceView class itself (e.g. touching the screen and creating a new image, etc.) Sadly, I'm stumped on this particular problem. Is there a better approach for designing my Activity/SurfaceView interaction? Is an additional View required?
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Mar 9, 2009
From http://d.android.com/guide/topics/ui/declaring-layout.html, it said "Instantiate layout elements at runtime. Your application can create View and ViewGroup objects (and manipulate their properties) programmatically."
Can you please tell me how/where I can find example for that?
For example, how can I convert the following layout into Java code of my MyWidget. So that when I put "<MyWidget...>" in my layout xml file, it will automatically build a Gallery inside the MyWidget? code...
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Sep 2, 2009
This is probably a very "newbie" question as I'm relatively new to the android sdk, but figured this would be good place to ask.
Say you have a layout with several textviews that all have sequential IDs (ie, tBox1, tBox2, tBox3, etc).Is it possible to reference each box in a loop? Something like:
do { iCount++; View tvBox1 = findViewById(R.id.tBox[iCount]); }
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Jun 12, 2010
There's a webpage I pull up with webview, however i'd like to hide the 1 text link at the top. Is there a way to do this? The link is in the body, so I can't hide the body element in whole.
The webpage is all text, and one tiny image at the bottom, but the text is generated each time you load it, so I can't just copy/paste the body.
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Jun 27, 2010
When I have a ListActivity and an Adapter how does Android handle a list with 200 elements.
Does it try to load all of them directly how does it wait till the user scrolls and then renders those elements?
Do I have to worry with performance when a list is too long?
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Jul 8, 2010
Is there any way to set my sliding drawer on top of other elements in my layout? I have an ImageView which is intended for an album art and I would like to have a sliding drawer overlay at the bottom of that ImageView.
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Mar 4, 2010
Is possible to have a separator between elements of a GridView?
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Feb 17, 2010
In my application by using web service i get the data from database and stored that data in hash table.I took that data from hast table to array.this array data can be displayed in button.My array contains 10 elements.For animation i used view flipper.Now i want to do is display that array elements on button one after another for every 10sec.But in Updater method i didn't get all array elements.How to solve this one
I am sending my code:.......................
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Jun 18, 2009
I would like to create a user interface which would contain network indication icons (3G, WiFi...) and I would like to use existing graphic elements which are displayed in notification bar.
Does anyone know how to get these existing elements and use it in custom layout?
I guess these icons are all ImageView elements and I am wondering whether it is possible to retrieve them with findViewById() method...
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Apr 16, 2010
I do not know the reason why am i getting same values of different JSON date values. Here is my code for parsing date values in JSON date format:
package com.jsondate.parsing;
import java.text.SimpleDateFormat; import java.util.Date;
import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.widget.TextView;
public class JSONDateParsing extends Activity {/** Called when the activity is first created. */String myString;
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tv = new TextView(this);
//Date d = (new Date(1266029455L));
//Date d = (new Date(1266312467L));
Date d = (new Date(1266036226L));
//String s = d.getDate() + "-" + d.getMonth() + "-" + d.getYear() + d.getHours() +
d.getMinutes() + d.getSeconds();
// SimpleDateFormat sdf=new SimpleDateFormat("yyyy MMM dd @ hh:mm aa"); //Toast.makeText(this, d.toString(), Toast.LENGTH_SHORT);
Log.e("Value:", d.toString());
myString = d.toString();
String []words = myString.split(" ");
for(int i = 0;i < words.length; i++)
Log.e("Value:", words[i]);
myString = words[2] + "-" + words[1] + "-" + words[5] + " " + words[3];
tv.setText(myString);
setContentView(tv);
} }
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Oct 8, 2009
I'm trying to parse JSON in android but am having trouble with accessing sub children of an object. I am trying to extract augment from the following. Code...
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Apr 7, 2010
I have the following JSON text that i need to parse to get page Name, pagePic, post_id, etc. What is the required code? page Info: { page Name: abc pagePic: http://profile.ak.fbcdn.net/object2/367/... }
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Jun 12, 2010
String s = [{"id": 1, "fields": {"Name": "hello1", "Age": "10" }}, {"id": 2, "model": "fields": {"Name": "hello2", "Age": "12"}}] I get error when I do this Code...
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Jun 12, 2010
Is there any code snippet for getting and posting JSON object to a http server in Android? I want to call the API in my website and get the JSON response to be displayed in the Android apps.
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Aug 26, 2010
Is there a good example showing how to query a server and downloading the response (JSON or XML)?
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Oct 7, 2010
Here I am posting my Json Response below:
CODE:.......
Now I want to have the following data Parsed "Phone", "Distance", "City", "Title", "State" and only "AverageRating" from the Tag "Rating".
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May 12, 2010
In the application I am developing, I would like to send messages in the form of JSON objects to a Django Server and parse the JSON response from the server and populate a custom listview.
From the little JSON knowledge I have, I thought this format for the response from server
CODE:...
How much knowledge of JSON should I have to accomplish this purpose? Also it would be great if someone could provide me links of some tutorials for sending and parsing JSON Objects.
Is there any advantage using GSON Parser rather than 'get' command for parsing JSON responses?
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Oct 29, 2010
How to parse following json return from facebook.i tried my self by searching on net But i failed.
CODE:.............
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