CODEWITHSUNDEEP
androidlistviewimageviewlazy-evaluation
360Productions
360Productions

Reputation: 37

How could I speed up the loading of a ImageView in listView while using SimpleCursorAdapter?

Hey my question is how can I speed up the loading of my listView...because I have the problem that it is realy lazy because of the ImageView. But how could I load the pictures in my cache? I'm using the simple cursor adapter to load the data from my Sql Database. Here is my code:

void populateListViewFromDB() {

    Cursor cursor = myDb.getAllRows();

    // Allow activity to manage lifetime of the cursor.
    // DEPRECATED! Runs on the UI thread, OK for small/short queries.
    getActivity().startManagingCursor(cursor);
    //if (cursor.moveToLast()) {
        //  do {
        // do what you need with the cursor here


    // Setup mapping from cursor to view fields:
    String[] fromFieldNames = new String[] 
            {DBAdapter.KEY_NAME,DBAdapter.KEY_PRICE,DBAdapter.KEY_LEVEL,DBAdapter.KEY_ART,DBAdapter.KEY_VALUETXT,DBAdapter.KEY_PIC };
    int[] toViewIDs = new int[]
            {R.id.tv_Shop_item1,     R.id.tv_Shop_Price_item1,R.id.tv_shop_Level_item1,R.id.tv_shop_use_item1,R.id.tv_shop_use_item2,R.id.IV_Shop_item1 };

    // Create adapter to may columns of the DB onto elemesnt in the UI.
    SimpleCursorAdapter myCursorAdapter = 
            new SimpleCursorAdapter(
                    getActivity().getApplicationContext(),      // Context
                    R.layout.item_shop, // Row layout template
                    cursor,                 // cursor (set of DB records to map)
                    fromFieldNames,         // DB Column names
                    toViewIDs               // View IDs to put information in
                    );

    // Set the adapter for the list view

    myList.setAdapter(myCursorAdapter);
     //  } while (cursor.moveToPrevious());
    //}
}

Or is there any other way to add the pictures to the ListView? Because I always read other Questions how to safe bitmaps in the Chache...

Thanks for helping and sorry for my bad englsih..Im from Germany;)

Upvotes: 0

Views: 276

Answers (1)

Harry Kim
Harry Kim

Reputation: 89

Try this library. It's very solid and well featured image loading library with cache support.

https://github.com/nostra13/Android-Universal-Image-Loader

Upvotes: 1

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