Android populate a String array in a do while statement

Question

I want to populate a String array in a do while statement like below, I can populate a TextView with the code but I need to be able to click on through, if you know what I mean.

It's not all here but I hope you get my drift.

String[] theLocations = { };

do {        
    //...Here I would like to fill theLocations with the same values as output below
    output.append("\n\n" + BeachName + " - " + distence + "Kms");           
} while (theCursor.moveToNext());

I guess I will need the _id field also!

Cheers,

Mike.

st0le · Accepted Answer · 2011-12-20 10:26:21Z

2

The problem with array is that it has a fixed size, and while loop usually don't run a fixed number of times.

There are two better options:

Use StringBuilder:

StringBuilder sb = new StringBuilder();
do {        
    sb.append("\n\n" + BeachName + " - " + distence + "Kms");           
} while (theCursor.moveToNext());

Use ArrayList<String>:

List<String> ar = new ArrayList<String>();
do {        
    ar.add("\n\n" + BeachName + " - " + distence + "Kms");           
} while (theCursor.moveToNext());

edited Dec 20, 2011 at 10:26

st0le

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answered Dec 20, 2011 at 10:11

MByD

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2 Comments

st0le Over a year ago

You can do a String[]theLocation = ar.toArray(new String[ar.size()]) at the end to get an array.

user903601 Over a year ago

Thanks Binyamin and @Njzk2 but as I was using ArrayAdapter, not in the above code to populate my list List<String> ar = new ArrayList<String>(); worked perfectly and first time. thanks!

njzk2 · Accepted Answer · 2011-12-20 10:16:12Z

1

Use

cursor.getCount()

to initialize your String[]:

String[] theLocations = new String[cursor.getCount()]
int index = 0;
while (cursor.moveToNext()) {
    theLocations[index++] = cursor.getString(column);
}

answered Dec 20, 2011 at 10:16

njzk2

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