Android :: Loading String Values From File Instead Of List In Class

Nov 1, 2010

I 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 :: Loading String Values from File instead of List in Class


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Code...

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At the same time inside single project?

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Jun 24, 2009

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Android :: Color Class Can Be Used To Extract Rgb Values From A Pixel - 32 Bit Int

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Long story short;

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

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

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Sep 12, 2010

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i.e.

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what is Y?

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what is X?

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Jun 2, 2010

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code:....................

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Nov 5, 2010

I 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:.........................

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