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POAndroid getContentResolver().query error
 

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    <p>I'm rather new to both Java programming and to Android development, so my learning curve is rather steep at the moment. I seem to be stuck on something that I can't find decent examples for how to work past it.</p> <p>I wrote a function that gets all my phone's contacts based on examples and docs I found here &amp; there online. The problem I cannot seem to work through is this. The following code works just fine;</p> <pre><code> private void fillData() { // This goes and gets all the contacts // TODO: Find a way to filter this only on contacts that have mobile numbers cursor = getContentResolver().query(Contacts.CONTENT_URI, null, null, null, null); final ArrayList&lt;String&gt; contacts = new ArrayList&lt;String&gt;(); // Let's set our local variable to a reference to our listview control // in the view. lvContacts = (ListView) findViewById(R.id.lvContacts); while(cursor.moveToNext()) { contacts.add(cursor.getString(cursor.getColumnIndex(Contacts.DISPLAY_NAME))); } // Make the array adapter for the listview. final ArrayAdapter&lt;String&gt; aa; aa = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_multiple_choice, contacts); // Let's sort our resulting data alphabetically. aa.sort(new Comparator&lt;String&gt;() { public int compare(String object1, String object2) { return object1.compareTo(object2); }; }); // Give the list of contacts over to the list view now. lvContacts.setAdapter(aa); } </code></pre> <p>I want to alter the query statement by filtering out all contacts that do not have a mobile phone number entry. I attempted something like this;</p> <pre><code> cursor = getContentResolver().query(Contacts.CONTENT_URI, new String[] {Data._ID, Phone.TYPE, Phone.LABEL}, null, null, null); </code></pre> <p>But when I do that it throws a NullPointer exception error. What's wrong with this? I got that from an example on android's site, but they had a where clause that didn't apply to my needs, so I change the where stuff to null. Is that what's screwing this up?</p> <p>Thanks.</p>
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    1. USSkittles
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    1. COThe problem appears to be that it does not like the "data2" column reference in the new String[] {Data._ID, Phone.TYPE, Phone.LABEL} argument. The Phone.TYPE translates to "data2" and the error msg says something about SQLiteQueryBuilder.computeProjection not being very pleased with that column. Not sure how to resolve this.
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      1. USSkittles
 

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