Android :: Access To String 'Icon List' Given IconListActivity.class?
Sep 22, 2009Code...
How do I access to the string 'Icon List' given IconListActivity.class?
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Android :: Loading String Values From File Instead Of List In Class
Nov 1, 2010I think I have a pretty easy problem to solve, but I have been beating my head against the wall for hours trying to get past it! I have an adapter that loads a list of URLS:
adapter=new MyAdapter(this, lStrings);
list.setAdapter(adapter);
The list of URLS looks like this:
private String[] lStrings={
"http://www.domain.com/file1.jpg",
"http://www.domain.com/file2.jpg",
"http://www.domain.com/file3.jpg",
};
What I want instead is to load these values from a text file that lies on the SD card. For that matter, I would be okay with loading the values from a text file into a String, and then load the String into the list as I imagine that would be the "cleaner approach". However, all attempts to do this have failed. For instance, I replaced the above snippet with this:
private String[] lStrings=
{ MainActivity.this.getString(R.string.myurllist) };
but then I get a Forced Close on loading.
I'm a bit new to Java, Android, and development in general.
Android :: Access The String Values Of String Resources Statically
May 5, 2009If there's anyway way I to access the String values of String resources statically? e.g. a static equivalent of Context.getString(...)?
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Sep 8, 2010I'm new to Java and android development. In my application I need data which is accessible for a few activities. I've read that a good solution is to use Application class for this. So I use it like this:
public class MyApplication extends Application {
private String str;
public String getStr(){
return str;
}
public void setStr(String s){
str = s;
}
}
and I can access this variable from activity like this:........................................
Android :: Set An Intent's Class From A String Value?
Jun 10, 2010I am trying to set the class for an intent to the address listed in a string value, so that I can launch a given activity. The string is composed dynamically during runtime.
Is there anyway to make something like the code below run...
Android :: Store Second Value Beside Each String Without Implementing New Adapter Class?
Oct 14, 2010I want to create a ArrayAdapter for one spinner. So each element contain one string (which will be displayed in the spinner/list) and one value (e.g. an ID). How I can easily store a second value beside each string without implementing a new Adapter class?
View 2 Replies View RelatedAndroid :: Sending A String Created Inside A Method To Another Class
Sep 12, 2010I have code which has one activity which passes information to a second activity.
I can use this information to pass to a third activity with additional information from the result of the second activity.
I want to use gestures as a method of going back to a previous activity, but if I go back from the third to the second activity I need the information initially passed from the first to the second activity to still be present.
i.e.
First Acticity
what is Y?
answer y = 5
Second activity
User said Y = 5
what is X?
Third Activity
User said Y = 5
X = 6
Go back to Second activity but maintain the input of
User said Y = 5.
To do this I have used a bundle to pass the information between activities, but I can only access the info in the bundle from within a method within the class started by the intent.
The gesture controls are within another class, so I cannot access the bundle information from within this class as the getIntent command produces a not defined error.
What I need to do is to be able to pass the information from the bundle from the first activity to the gesture class so that I can pass it back when I go back using the gestures.
Android :: Class That Turns That An XML String Into Java Object - ClassNotFoundException
Jun 22, 2010So I ran into a problem today while working on my Android program. I have a class that turns that an XML string into a Java object (third party) and it works fine in as a regular java project but on Android I get this weird error:
CODE:.......
I hide my application name and my package for obvious reasons but I was wondering if anyone has ever encountered problems like this. Class is in the correct package, which is a library I have added. Other classes that I reference before are there and those can be made. Are there any other reasons a ClassNotFound Exception is thrown?
Android :: Get A String From And SD Card Into A List Adapter?
Nov 5, 2010I have been playing around with a LazyList code sample which is pretty neat for displaying images in a safe and non-memory-hogging way. It uses a very simple mechanism of displaying images based on a list that exists within the class file.
Example:
CODE:...........
I am trying to load these values from an index file that is downloaded to the SD card, and then loaded from it. Here is the code that loads the index file and simply displays it as a Toast message (this works fine).
PULL FILE FROM SD CARD
CODE:.........
What I am struggling with is how to take this string that is being loaded from the SD card and pass it into the list adapter.
The code presently looks like this:
CODE:................
I am trying to reload or refresh that same adapter using the values I pulled from the SD card file, presently called "readString".
Can anyone give me some pointers? I am leaving out the code that I created that doesn't work ... because I don't think I am handling this at all correctly. Also - go easy on my, I am a complete newbie to all of this. :-)
Here is my what I am trying to do. Simply copy and paste the working code where I want it. I know it's not that simple, but I am having a hard time reconstructing it properly. Here is my edited code ...
PULL FILE FROM CARD ATTEMPT #2
CODE:..........
The error that I get on "adapter=new LazyAdapter(this, readString);" is "The constructor LazyAdapter(new View.OnClickListener(){}, String) is undefined".
Having not shared the contents of LazyAdapter, that information may not be helpful. So here is the LazyAdapter class in it's entirety ...
CODE:.........................
Android :: How To Access String Resource From Another Application?
Oct 8, 2010I have a application 'A' and application 'B'. Say, I have a string resource in the application 'A'.
<string name="abc">ABCDEF</string>
How do I access the value of abc from the Activity in 'B'.
I tried the following method.
try { PackageManager pm = getPackageManager();
ComponentName component = new ComponentName( "com.android.myhome", "com.android.myhome.WebPortalActivity");
ActivityInfo activityInfo = pm.getActivityInfo(component, 0);
Resources res = pm.getResourcesForApplication(activityInfo.applicationInfo);
int resId = res.getIdentifier("abc", "string", null);
} catch(NameNotFoundException e){ }
Always resId is returned 0 always. Can anyone please let me know if I could access string abc from the application 'B'.
Android :: When Install My Apk Get An Icon For Every Class In Project
Oct 10, 2010I have a project in Eclipse with maybe 7 different classes that i open with Intent. The problem is when I install the .apk on my HTC phone I get an icon for every class. How do I make the project so it installs as one app only?
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Oct 6, 2010After several hours of searching for the cause of a Out Of Memory Error, I found a wierd problem with Strings. To keep it simple, trimmed it down to something like this:
ArrayList<String> someStringList = new ArrayList<String>(1000);
for (int i=0; i<1000; i++) {
String someBigString = new String(new char[100000]);
String someSmallString = someBigString.substring(0,1);
someStringList.add(someSmallString);
}
Android :: Access Droid.R.string Values From Xml Layout File?
Feb 18, 2010I can access android.R.string.ok value from java code, but can't see how to do the same in layout xml file - I only have @string/xxx in autocompletion list which does not have system string values.
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May 5, 2010I had write two classes IntentA and IntentB in my application (Both are in same package and both extends Activity class). In IntentA class I had created one button on pressing that button controll is trsnfer to IntentB class. IntentB class also contain Button on pressing that control is transfer to IntentA class.
This work fines. Now I want to set value in IntentA class using putExtra method and access that value in IntentB class How should I do that? I had put value in class IntentA like
Intent i1 = new Intent(this,IntentB.class);
i1.putExtra("Intent Name", "IntentA");
startActivity(i1);
Now I don't know How to access "Intent Name" value in IntentB class.
Android :: Access To Class Not Allowed / What To Do?
Feb 6, 2009I get an apk file from somewhere. I tried to install it the emulator successfully. (The emulator is built from the latest code in AOSP which should be cupcake or later). But I can't launch the application from the GUI. It complains "The application xxx has stopped unexpectedly." After checking the logcat, I find the message "access to class not allowed". It seems that that process is not allowed to instantiate the Activity class.
Since I can install the apk successfully, I am curious why I can't launch it as a user.
BTW, I tried two ways to install the app. 1) by copying it to /system/ app and rebuild the system.img 2) by using "adb install". Both getting the same error message.
I tried to extract the AndroidManifest.xml file from the apk. But it seems that the file is scrambled and can't read.
Android :: Speed Of SQLite Vs List Contains For "in-set" Icon On List Rows
May 9, 2010An application I'm developing requires that the app main a local list of things, let's say books, in a local "library." Users can access their local library of books and search for books using a remote web service. The app will be aware of other users of the app through this web service, and users can browse other users' lists of books in their library. Each book is identified by a unique bookId (represented as an int). When viewing books returned through a search result or when viewing another user's book library, the individual list row cells need to visually represent if the book is in the user's local library or not. A user can have at most 5,000 books in the library, stored in SQLite on the device (and synchronized with the remote web service). My question is, to determine if the book shown in the list row is in the user's library, would it be better to directly ask SQLite (via SELECT COUNT(*)...) or to maintain, in-memory, a List or int[] array of some sort containing the unique bookIds.
So, on each row display do I query SQLite or check if the List or int[] array contains the unique bookId? Because the user can have at most 5,000 books, each bookId occupies 4 bytes so at most this would use ~ 20kB. In thinking about this, and in typing this out, it seems obvious to me that it would be far better for performance if I maintained a list or int[] array of in-library bookIds vs. querying SQLite (the only caveat to maintaining an int[] array is that if books are added or removed I'll need to grow or shrink the array by hand, so with this option I'll most likely use an ArrayList or Vector, though I'm not sure of the additional memory overhead of using Integer objects as opposed to primitives).
Android :: Where To Put Custom Data And Access Them Via R-class Then?
Aug 5, 2010In a typical Android project you have the res/drawable directories where you can put images but i have some special custom binary files.
where do I usually put them and can i access them via the R-class then?
Android : Access Context Of A Class Which Is Not An Activity?
Jan 28, 2009Can anyone tell me how to access context of a class which is not an activity?
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Sep 22, 2009Can a core class such as "AbsListView" access resources, such as xml files, and .png's, in a 3rd party app installed in the normal way (at the app level)?
I realize this is a change in framework code, and that is fine for my purposes. So, for example, if I know that I am going to install an app called "MyApp", could I go into frameworks/base/core/java/android/ widget/AbsListView.java and tell it to use an xml file and .png's that live in that app? Here is the line I would want to modify: setSelector(getResources().getDrawable( com.android.internal.R.drawable.list_selector_background));
Android :: Access Drawable Resources From A Not Context Class?
Nov 7, 2010So I'm defining a class that sets a Drawable attribute in an object. The problem is that I can't access the getResource().getDrawable(int resourceId) method unless I have some Context.
So what I did was to send to that class an activity instance (let's call it "act") and then I did:
act.getResources().getDrawable(R.drawable.whellchair)
but, when executing that line it throws a NullPointerException.
When idea how to accomplish this?
Android :: Way To Access Content Resolver Methodsn From AppWidgetProvider Class?
Dec 31, 2009Is it possible to access the content resolver methods in a class extending from AppWidgetProvider class? Have been trying to do it with no luck so far.
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Sep 2, 2009I am trying to add an icon in the list view. Below is my code snippet and realted xml, without the icon(i.e. just list view). code...
But I am not successful. It is crashing. Any suggestion on how to add icons in the list view?
Android :: Setting Different Icon In Each Item In List
Aug 3, 2010I am trying to set 6 icon in 6 different items in list but not getting how to do it.
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Nov 1, 2010Is there any way to hide an application icon from Android applications list ? The application should be downloaded from Market and opened some GUI for configuring my application. I don't want to see any icon of my application in applications list. User should not be able to run it.
By the way I know some way:remove this line from manifest <category android:name="android.intent.category.LAUNCHER" /> But it is not worked for me, because the GUI is not shown.
Android :: What Does Notifcation Icon Mean - In Notifications List With No Text
Jun 17, 2010It looks like a black SD card with a folded up corner and to the lower right of it is a small cog wheel.
It is sitting in my notifications list with no text beside it and it doesn't go away when I choose "clear notifications"
Android :: Notification Icon / One For Status And One For Pull Down List?
Jul 2, 2010Is it possible to show one icon in the status bar, but when the user pulls down the Notification List, to have a different icon display there? (ie, one for the Intent and one for the status bar?)
View 3 Replies View RelatedAndroid :: How To Assign Each List Items An Individual Icon?
Oct 24, 2010I'm very new to Android and Java development, searching and reading various tutorials and using different parts of code from around the internet, trying to make sense of it as I go. Currently I have a list created with 4 list items, what I'd like to do is assign a different icon to each of these list items, however, I've no idea how to do it, nor do I know what to search for. Here's the code:
main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent">
<ListView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/mainListView"> </ListView>
</LinearLayout> row.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android
android:id="@+id/rowTextView" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:padding="10dp" android:textSize="16sp" >
</TextView> FirstList.java
import java.util.ArrayList; import java.util.Arrays;
import android.app.Activity; import android.os.Bundle; import android.widget.ArrayAdapter; import android.widget.ListView; public class FirstList extends Activity {
private ListView mainListView; private ArrayAdapter<String> myListAdapter;
/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main);
mainListView = (ListView) findViewById( R.id.mainListView);
String[] myList = new String[] {"List 1", "List 2", "List 3", "List 4"};
ArrayList<String> listObjects = new ArrayList<String>();
listObjects.addAll( Arrays.asList(myList));
myListAdapter = new ArrayAdapter<String>(this, R.layout.row, listObjects);
mainListView.setAdapter(myListAdapter);
} }
Android :: How To Implement Little Static Map Preview List Icon?
Sep 27, 2010I built a ListActivity and now I want to add Map Previews as the List Icons. I dont want to extend MapView because: 1st I just need a little static preview and 2nd I already extended to ListView.I already looked into using the static map api, however that also doesnt look quite good in that small dimensions:
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Aug 31, 2009I want to add an image icon in expandable list view .I have seen the tutorial they have added only in child elements .Is there any other way to add image icon in parent.
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