FilterCursorWrapper.java

private class FilterCursorWrapper extends CursorWrapper {

	private String filter;
	private int column;
	private int[] index;
	private int count=0;
	private int pos=0;

	public FilterCursorWrapper(Cursor cursor,String filter,int column) {
		super(cursor);
		this.filter = filter.toLowerCase();
		this.column = column;
		if (this.filter != "") {
			this.count = super.getCount();
			this.index = new int[this.count];
			for (int i=0;i<this.count;i++) {
				super.moveToPosition(i);
				if (this.getString(this.column).toLowerCase().contains(this.filter))
					this.index[this.pos++] = i;
			}
			this.count = this.pos;
			this.pos = 0;
			super.moveToFirst();
		} else {
			this.count = super.getCount();
			this.index = new int[this.count];
			for (int i=0;i<this.count;i++) {
				this.index[i] = i;
			}
		}
	}
	
	@Override
	public boolean move(int offset) {
		return this.moveToPosition(this.pos+offset);
	}
	
	@Override
	public boolean moveToNext() {
		return this.moveToPosition(this.pos+1);
	}
	
	@Override
	public boolean moveToPrevious() {
		return this.moveToPosition(this.pos-1);
	}
	
	@Override
	public boolean moveToFirst() {
		return this.moveToPosition(0);
	}
	
	@Override
	public boolean moveToLast() {
		return this.moveToPosition(this.count-1);
	}
	
	@Override
	public boolean moveToPosition(int position) {
		if (position >= this.count || position < 0)
			return false;
		return super.moveToPosition(this.index[position]);
	}
	
	@Override
	public int getCount() {
		return this.count;
	}
	
	@Override
	public int getPosition() {
		return this.pos;
	}
	
}