使用ListView和SimpleCursorAdapter实现带有联系人照片和过滤/搜索功能的联系人列表
我一直在寻找更简单的解决方案，我的最终解决方案与Daniel在这里提到的方案非常接近，所以我想在这里分享我的解决方案。我使用Fragment将设备联系人显示为带有其图片名称的列表。结果与Daniel的相似，但只显示名称。一旦理解代码，就可以很容易地显示更多信息。
在我的情况下，我是使用PHOTO_URI从ContactsContract中获取名称和图片，因此我不必像Daniel那样扩展SimpleCursorAdapter。
我的示例还包括在用户在SearchView中键入内容时对联系人列表进行过滤。
我有一个名为FragmentContacts的片段和两个布局文件，第一个是主要布局frag_contacts.xml，第二个是每个联系人行的list_row_contact。
frag_contacts.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@android:color/holo_blue_light"
android:padding="8dip">
<android.support.v7.widget.SearchView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:id="@+id/searchView"/>
</FrameLayout>
<LinearLayout
android:id="@+id/ll_contactList"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="9"
android:orientation="vertical" >
<ListView
android:id="@+id/lv_ContactList"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="#aaaaaa"
android:dividerHeight="1dp" >
</ListView>
</LinearLayout>
</LinearLayout>
list_row_contact.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:descendantFocusability="blocksDescendants">
<FrameLayout
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:gravity="center">
<ImageView
android:id="@+id/imgContact"
android:layout_width="35dip"
android:layout_height="35dip"
android:layout_gravity="center"
android:layout_margin="5dip" />
</FrameLayout>
<TextView
android:id="@+id/contact_name"
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="6"
android:gravity="center_vertical"
android:textSize="18sp"
android:paddingLeft="10dip">
</TextView>
</LinearLayout>
FragmentContacts.java
public class FragmentContacts extends Fragment
implements LoaderManager.LoaderCallbacks<Cursor>{
private ListView lv_ContactList;
private SearchView searchView;
private SimpleCursorAdapter mCursorAdapter;
private static final String DISPLAY_NAME = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ? Contacts.DISPLAY_NAME_PRIMARY : Contacts.DISPLAY_NAME;
private static final String[] contactsColumns = { Contacts._ID, Contacts.LOOKUP_KEY, DISPLAY_NAME, Contacts.PHOTO_URI };
private final String contactsFilter = "(" +Contacts.HAS_PHONE_NUMBER+ "='1') AND (" + Contacts.IN_VISIBLE_GROUP + "='1')";
private final String contactsSortOrder = DISPLAY_NAME + " COLLATE LOCALIZED ASC";
private final static String[] listDisplayColumns = { DISPLAY_NAME, Contacts.PHOTO_URI };
private final static int[] listDataViewIDs = { R.id.contact_name, R.id.imgContact };
String[] mSelectionArgs;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.frag_contacts, null);
lv_ContactList = (ListView)view.findViewById(R.id.lv_ContactList);
searchView = (SearchView)view.findViewById( R.id.searchView);
return view;
}
@Override
public void onResume(){
super.onResume();
mCursorAdapter= new SimpleCursorAdapter( getActivity(), R.layout.list_row_contact, null, listDisplayColumns, listDataViewIDs, 0);
lv_ContactList.setAdapter(mCursorAdapter);
getLoaderManager().initLoader(0, null, this);
searchView.setOnQueryTextListener( new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit( String query ) {return false;}
@Override
public boolean onQueryTextChange( String newText ) {
if( newText.isEmpty() ) mSelectionArgs = null;
else mSelectionArgs = new String[]{ "%"+newText.trim()+"%"};
getLoaderManager().restartLoader( 0, null, FragmentContacts.this );
return false;
}
} );
}
@Override
public Loader<Cursor> onCreateLoader( int id, Bundle args ) {
if(mSelectionArgs == null)
return new CursorLoader( getActivity(), Contacts.CONTENT_URI, contactsColumns, contactsFilter, null, contactsSortOrder );
else
return new CursorLoader( getActivity(), Contacts.CONTENT_URI, contactsColumns, contactsFilter + " AND (" + DISPLAY_NAME+" LIKE ?)", mSelectionArgs, contactsSortOrder );
}
@Override
public void onLoadFinished( Loader<Cursor> loader, Cursor data ) {
mCursorAdapter.swapCursor(data);
}
@Override
public void onLoaderReset( Loader<Cursor> loader ) {
mCursorAdapter.swapCursor(null);
}
}
