Android :: Some Queries About ListView
Mar 16, 2010
I am very new to Android, but I love it because it has given me back what i was longing for : Java.
but I am facing some doubts and confusions about is, since I am totally new to Mobile App Development:-
I am listing my queries here-
1.) I wish to put various items in a single element of a ListView. Like one image in the left, so many TextViews in a single element, and more things. Is it possible?
2.) I wish to give my text different colors, different sizes, and different fonts. how to do this?
3.) I wish to insert or delete elements from a List in ListView. How to do that?
4.) I wish to change the background color of my list. how to do this?
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Mar 16, 2010
I am running cts test cases on eclair . I've done with : . build/envsetup.sh; lunch 1; make cts
That compiled my all cts test cases. Apk's for that all have been installed in $(ANDROID_BUILD_TOP)/out/target/product/generic/data/app :
few of these are : CtsDatabaseTestCases.apk , ApiDemos.apk etc.
Now I start my emulator :: ./emulator &
I "adb push " to all apk's to my emulator .
Now my query is how to run these apk's on device /emulator ?
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Dec 27, 2009
Can anyone point me to a good example where a AsyncTask queries a local SQLite database and then updates the UI successfully. I have a database which I query using doInBackground... create a new custom SimpleCursorAdapter (overriding onViewBind), return the adapter (SimpleCursorAdapter), then in postExecute() create ListView adapter which is set to the the SimpleCursorAdapter, that was returned, then I set the listview adapter using SetAdapter(adapter);...
For some reason I throw an exception on fillWindow.java:200....
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Nov 5, 2009
I start a long-running SQL SELECT query and, before it finishes, wish to make a short-running SQL SELECT query. Both queries are on the same tables. The whole database can be considered read-only. My initial tests show that the short-running query only actually starts when the long-running query has finished.
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Mar 24, 2010
I was monitoring the traffic on Eclair 2.1 and noticed periodic DNS queries to "android.clients.google.com" after launching IM/Email/ Browser even though the phone was idle and I was not doing anything. why Android generates these periodic queries to "android.clients.google.com"? Is there a specific service generating these queries?
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Sep 1, 2010
There is a user input then on submit pass the search keywords to the db server and return the results (the db server has to be external by the way). Could i pass the search query to server side (php) and get the php script to execute the queries and return the scripts output?
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Aug 27, 2010
I'm just using the build in email app for my hotmail, gmail, work mail etc. However It keeps bringing up old messages that I leave in my inbox. How can I get it to not keep displaying these? Or better yet is there a killer app out there that does email/contacts better? I hate having to use the whole gmail thing.
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Apr 10, 2009
Has anyone other than me needed to make consecutive queries to a sqlitedatabase? My application works sometimes but other times (about 98% of the time), the app will crash. What I'm doing is using the sqlitedatabase.query(..) to return a cursor which I parse, I make multiple successive queries to the database and parse different recordsets/cursors.
My question would be does a sqlitedatabase need to recover or clean up after a .query is issued?
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Dec 14, 2009
I am using sqlite db in my app. i am able to create db and table and execute queries. But I wanted to know where is the sqlitedb created, so that I can check them from commandine. where doed that android store ? I searched, could not find anything on that name in my pc, does android encrypt the name of the db file ?
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May 15, 2009
A couple of questions. First thing I was wondering is where to log bugs in the docs. The ContentProvider query() docs are missing selectionArgs in the example code. It also uses the deprecated addId instead of ContentUris.withAppendedId().
With regards to the selection options - how exactly can these handle? I've seen a couple of places where a something + "='" + somevalue "'" is used, but I'm specifically wondering if it can handle IN clauses or if there's some form of or statement I can use to check for a variety of values in a particular column rather than just the one.
Last question is about the Contacts PERSON_ID and how long-lived that is. It is guaranteed to never change (though may be removed obviously). Well not truly guaranteed but will only cycle after it runs out of unused integers. Or may they change value as contacts are removed?
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Dec 15, 2009
have an activity handling search (ACTIVITY_1), which works perfectly when I use the search (via SEARCH button on the phone) within/from this activity. However, when I use search from another activity (ACTIVITY_2..x) by implementing onNewIntent and forward the query string to my Search_Activity.class (ACTIVITY_1) it always pauses ACTIVITY_2 first and then goes to onCreate() of ACTIVITY_2..................
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Jun 18, 2010
I own LG EVE (GW 620)....
1)I want to password protect my text messages.
Please suggest me any application which should be free to do that..
2)IF i get an app from internet source (download via PC and installed via Linda etc.) ,will it be full version of that app??
3)Is there any way i can transfer my text messages in phone to my PC and vice versa?
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Apr 19, 2010
If i can do the following with regards to the email accounts on my desire:
1) have the exchange email client update the folders i've got setup (i have rules on my work account sending items to various folders depending on subject/sender etc and they don't seem to update automatically.
2) using the gmail app it doesn't seem to update automatically (or even on a schedule as i cant find one for it).
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Oct 1, 2009
Ive turned the bluetooth on and paired it with my old phone(se k650) what im trying to do is bluetooth all my contacts across but when i press so send via bluetooth on the SE it wont find the hero, even when its on discoverable, and when i go through "my devices" on the SE and look at the hero its offering no services. Ive also trying sending stuff from the hero and to the hero like photos and such with no luck.
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Aug 31, 2010
I have some queries:
1- I have Desire with Froyo. So, technically whenever I install an app, I should be given an option to install it on SD card. But so far, haven't seen it yet, consequently today I got a message that phone memory is running low. So, please help me out.
2- Secondly, last night due to some reason I opened navigation first time and there came two pop-ups asking me for some settings. I ticked them and then a satellite logo appeared on top bar. Does it consume a lot of battery?
3- So far I have set many applications on automatic updates but I have observed that I have to always update them manually. They don't get updated automatically.
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Jan 23, 2010
Well I bought my Galaxy here in India yesterday, and you all and this forum has been a major source of info to make up my mind.
Well I've bee browsing this forum trying to understand all that I need to know for the past two days before I could muster the courage to ask a couple of questions.
1) My Galaxy is on Firmware II3, is it worth upgrading to IK5 ?
2) When I upgrade, does everything, contact, apps etc, get wiped of from the device or do they remain as they are ?
3) Is there a way I can take a complete backup of my contacts, apps etc and restore them after a firmware update ?
My phone has not been rooted yet and I plan to use ODIN for updating the firmware.
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Sep 5, 2010
My wife has been playing with her new phone and needs some help with contact management.1, How can she keep the telephone contacts separated from her facebook contacts. Currently when she presses the phone button from her home page it seems to show all contacts. However when she goes to HTC People it is set to only show phone contacts not facebook contacts. 2, When you have facebook contacts how do you delete them? Do you have to remove them as a friend?I've changed my phone number on my facebook profile but it still shows on my wife's desire as my old number. She's tried removing me as a friend and re-adding me and it's still wrong.
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Mar 6, 2012
I went through many threads regarding XT530. links are URL>....the first thread is said to be root XT530 (2.3.5 based) but the title goes for XT316(2.3.4). So i am a bit worried if thats alright or i got wrongly redirected over there. Moreover, the links for the files weren't working, so i need links for the files needed (like Google GMS pack).
the second thread says it will root the current android version, but i need to ask if that would install Google GMS services automatically or i need to download that pack externally.
1. I got just 19mb to 25mb as my internal memory constantly. i mean, i dont think i would get more than 35mb of internal memory even if i remove all apps installed. is it normal?
2. would i be able to shift apps to SD card after rooting?
3. can i overclock my phone? and if yes, what is the maximum limit?
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May 31, 2010
1. Is there a software update for the Sony Xperia X10 yet ?
2. When i receive an email i go to open it and it can take up to a minute to open or i have to go to my next email and return to the previous one and it then appears ??
3. Lastly , i tried sending a video clip through email on the X10 and it said its to big anyway around this?
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Dec 15, 2009
I have an activity handling search (ACTIVITY_1), which works perfectly when I use the search (via SEARCH button on the phone) within/from this activity. However, when I use search from another activity (ACTIVITY_2..x) by implementing onNewIntent and forward the query string to my Search_Activity.class (ACTIVITY_1)
@Override
protected void onNewIntent(Intent intent) {
Log.i(TAG, "onNewIntent()");.....................
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Jun 26, 2010
I would like to change text and back ground color of my Listview without building custom rows. Is this possible ?
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Jun 24, 2009
There must be a way to do this. How can you tell a ListView that has a header to not scroll it when the user scrolls the contents? I want it to stay in a "stuck" position so that the user can always see what column the content applies to.
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Sep 9, 2010
In my project i m parsing xml and i want to put it in xml list with in list.
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Mar 9, 2010
I recently bought a Samsung Galaxy Spica, and had some general andorid related queries: The Spica, unfortunately comes with only 200 MB memory, which I imagine may be insufficient in the future. Thankfully it does come with a SD card slot. I imagine after apps, for me photos would probably take the most space on the device. Is there a way to have the camera / gallery save the picture directly to SD card rather than the phone memory ? Can anyone recommend a good calendar app that works 100% offline ? Don't want to be synching with Google Calendar in the cloud, every time I want to look up an appointment
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Apr 4, 2012
I have some class LoginActivity.java. In the onCreate method I retrieve ListView:
ListView list = (ListView)findViewById(R.id.snListView); then:
list.setAdapter(adapter);
In addition there are login.xml layout - there are:
<ListView
android:id="@+id/snListView"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
and sn_row.xml:
[Code]...
At the moment I have cell's height 100dp, I need that cell's height will depend on device, I mean I have here 5 cells showing at login screen in ListView and I need that these 5 rows will fit the ListView (cell's height = ListView's height/5).
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Jul 8, 2010
I'm very close to buying the desire from mobiles.co.uk (�110 handset) and Vodafone (600 mins, unlimited texts, 1gb internet, 24 months). I have a few questions which I would be incredibly grateful if you could help me with.
1.) - How do I put my iTunes music on to the Desire?
2.) - What is the PC Software like, and do they have or plan to have a iTunes version for Android any time soon?
3.) - Can you make folders on the Desire to put photos in?
4.) - Is 1GB enough, if I have 3G on but not using does this still eat up my allowance?
5.) - Can the Androids phones get viruses if you visit unsafe websites?
6.) - And with Vodafone does your monthly bill show the websites you have visited?
I know there are a lot of questions there, I just really need to know everything because for me it is a big decision as I am not exactly loaded with money at the moment!
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Sep 26, 2010
I have a listview within an activity and at the bottom of the screen I have a scrollable gallery, my problem is making the listview clickable, I would normally use the listview position by doing if(position == 3) and then create the intent but postion is being used by my gallery. I listview is in the main.xml populated by an array.xml, can I add an id i.e android:id in the arrays.xml and create an intent with that, or can I create a listactivity and still use position to fire an intent if so how would I do this.
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Sep 11, 2010
i can add to a db and list as a listview. When I click a list item using onListItemClick, what statement do I need to get the value? ........................
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Aug 1, 2009
I am beginer to the anroid ,i am using the below code for displaying listview and i am not able to getting the onlistitemclick events for further ui's. package com.List;
import android.app.Activity; import android.app.AlertDialog; import android.app.ListActivity; import android.content.ContentUris; import android.content.DialogInterface; import android.content.Intent; import android.content.DialogInterface.OnClickListener; import android.database.Cursor; import android.database.DataSetObserver; import android.os.Bundle; import android.provider.Contacts.People; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.TextView; import............................
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Sep 13, 2010
i want to implement listview with uses different xml layouts for rows depending on underlying item. A non optimal solution will be int getView method just to inflate every time a new view depending on the item from the adapter. Is there a better way to do this?
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