Ramz Ramz - 2 months ago 18
Android Question

how to get the database value to a String array in android(sqlite Database)

I have a database name "CUED" (sqlite Android)it have a table HELLO which contain a column NAME I can get the value to String from that column.
Let me show you my code section

myDB =hello.this.openOrCreateDatabase("CUED", MODE_PRIVATE, null);
Cursor crs = myDB.rawQuery("SELECT * FROM HELLO", null);


while(crs.moveToNext())
{
String uname = crs.getString(crs.getColumnIndex("NAME"));
System.out.println(uname);
}


It will print the value one by one.Now what I need is that I want to get the column values from database and so that I can store it in a String Array.

Answer

You already did the hard part... the array stuff is pretty simple:

String[] array = new String[crs.getCount()];
int i = 0;
while(crs.moveToNext()){
    String uname = crs.getString(crs.getColumnIndex("NAME"));
    array[i] = uname;
    i++;
}

Whatever, I always recommend to use collections in cases like this:

List<String> array = new ArrayList<String>();
while(crs.moveToNext()){
    String uname = crs.getString(crs.getColumnIndex("NAME"));
    array.add(uname);
}

In order to compare the arrays, you can do things like this:

boolean same = true;
for(int i = 0; i < array.length; i++){
    if(!array[i].equals(ha[i])){
        same = false;
        break;
    }
}
// same will be false if the arrays do not have the same elements
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