Allows the activity to manage the Cursor's lifecyle based on the activity’s lifecycle--- : Activity « UI « Android

1. Android
2. UI
3. Activity

Allows the activity to manage the Cursor's lifecyle based on the activity’s lifecycle---

     
        
package app.test;

import android.app.ListActivity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.widget.SimpleCursorAdapter;

public class Test extends ListActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //Uri allContacts = Uri.parse("content://contacts/people");
        //Uri allContacts = Uri.parse("content://contacts/people/1");        
        Uri allContacts = ContactsContract.Contacts.CONTENT_URI;
        //Uri allContacts = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, 1);
        Cursor c = getContentResolver().query(allContacts, null, null, null, null);
        startManagingCursor(c); 
        String[] columns = new String[] {ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME,};
        int[] views = new int[] {R.id.contactName, R.id.contactID};
        
        SimpleCursorAdapter adapter = 
            new SimpleCursorAdapter(this, R.layout.main, c, columns, views);
        this.setListAdapter(adapter);
        
        PrintContacts(c);  
    }    
    
    private void PrintContacts(Cursor c)
    {
        if (c.moveToFirst()) {
            do{
              String contactID = c.getString(c.getColumnIndex(ContactsContract.Contacts._ID));
              String contactDisplayName = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));  
                Log.v("Content Providers", contactID + ", " + contactDisplayName);
                int hasPhone = c.getInt(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
                if (hasPhone == 1) {
                    Cursor phoneCursor = getContentResolver().query(
                      ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, 
                      ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + contactID, null, null);                     
                    while (phoneCursor.moveToNext()) {
                      Log.v("Content Providers",
                            phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));                  
                    } 
                    phoneCursor.close();
                }
            } while (c.moveToNext());
        }
    }
}


//main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <ListView 
        android:id="@+id/android:list" 
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:layout_weight="1" 
        android:stackFromBottom="false" 
        android:transcriptMode="normal" 
        /> 
    <TextView   
        android:id="@+id/contactName"
        android:textStyle="bold"   
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        /> 
    <TextView   
        android:id="@+id/contactID" 
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
       />   

</LinearLayout>

   
    
    
    
    
  

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