Android 快速选择联系人

Activity 代码如下：

/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.example.android.apis.app;import com.example.android.apis.R;import android.app.ListActivity;import android.content.Context;import android.database.CharArrayBuffer;import android.database.Cursor;import android.os.Bundle;import android.provider.ContactsContract.Contacts;import android.view.View;import android.view.ViewGroup;import android.widget.QuickContactBadge;import android.widget.ResourceCursorAdapter;import android.widget.TextView;public class QuickContactsDemo extends ListActivity {    static final String[] CONTACTS_SUMMARY_PROJECTION = new String[] {            Contacts._ID, // 0            Contacts.DISPLAY_NAME, // 1            Contacts.STARRED, // 2            Contacts.TIMES_CONTACTED, // 3            Contacts.CONTACT_PRESENCE, // 4            Contacts.PHOTO_ID, // 5            Contacts.LOOKUP_KEY, // 6            Contacts.HAS_PHONE_NUMBER, // 7    };    static final int SUMMARY_ID_COLUMN_INDEX = 0;    static final int SUMMARY_NAME_COLUMN_INDEX = 1;    static final int SUMMARY_STARRED_COLUMN_INDEX = 2;    static final int SUMMARY_TIMES_CONTACTED_COLUMN_INDEX = 3;    static final int SUMMARY_PRESENCE_STATUS_COLUMN_INDEX = 4;    static final int SUMMARY_PHOTO_ID_COLUMN_INDEX = 5;    static final int SUMMARY_LOOKUP_KEY = 6;    static final int SUMMARY_HAS_PHONE_COLUMN_INDEX = 7;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        String select = "((" + Contacts.DISPLAY_NAME + " NOTNULL) AND ("                + Contacts.HAS_PHONE_NUMBER + "=1) AND ("                + Contacts.DISPLAY_NAME + " != '' ))";        Cursor c =                getContentResolver().query(Contacts.CONTENT_URI, CONTACTS_SUMMARY_PROJECTION, select,                null, Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");        startManagingCursor(c);        ContactListItemAdapter adapter = new ContactListItemAdapter(this, R.layout.quick_contacts, c);        setListAdapter(adapter);    }    private final class ContactListItemAdapter extends ResourceCursorAdapter {        public ContactListItemAdapter(Context context, int layout, Cursor c) {            super(context, layout, c);        }        @Override        public void bindView(View view, Context context, Cursor cursor) {            final ContactListItemCache cache = (ContactListItemCache) view.getTag();            // Set the name            cursor.copyStringToBuffer(SUMMARY_NAME_COLUMN_INDEX, cache.nameBuffer);            int size = cache.nameBuffer.sizeCopied;            cache.nameView.setText(cache.nameBuffer.data, 0, size);            final long contactId = cursor.getLong(SUMMARY_ID_COLUMN_INDEX);            final String lookupKey = cursor.getString(SUMMARY_LOOKUP_KEY);            cache.photoView.assignContactUri(Contacts.getLookupUri(contactId, lookupKey));        }        @Override        public View newView(Context context, Cursor cursor, ViewGroup parent) {            View view = super.newView(context, cursor, parent);            ContactListItemCache cache = new ContactListItemCache();            cache.nameView = (TextView) view.findViewById(R.id.name);            cache.photoView = (QuickContactBadge) view.findViewById(R.id.badge);            view.setTag(cache);            return view;        }    }    final static class ContactListItemCache {        public TextView nameView;        public QuickContactBadge photoView;        public CharArrayBuffer nameBuffer = new CharArrayBuffer(128);    }}

布局界面如下：

<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2009 The Android Open Source Project     Licensed under the Apache License, Version 2.0 (the "License");     you may not use this file except in compliance with the License.     You may obtain a copy of the License at          http://www.apache.org/licenses/LICENSE-2.0     Unless required by applicable law or agreed to in writing, software     distributed under the License is distributed on an "AS IS" BASIS,     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.     See the License for the specific language governing permissions and     limitations under the License.--><RelativeLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:paddingLeft="0dip"    android:paddingRight="9dip"    android:layout_height= "wrap_content"    android:minHeight="48dip">    <QuickContactBadge        android:id="@+id/badge"        android:layout_marginLeft="2dip"        android:layout_marginRight="14dip"        android:layout_marginTop="4dip"        android:layout_marginBottom="3dip"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_height= "wrap_content"        android:layout_width= "wrap_content"        android:src="@drawable/alert_dialog_icon"        style="?android:attr/quickContactBadgeStyleWindowSmall" />    <TextView        android:id="@+id/name"        android:textAppearance="?android:attr/textAppearanceMedium"        android:paddingLeft="2dip"        android:layout_centerVertical="true"        android:layout_toRightOf="@id/badge"        android:layout_width="match_parent"        android:layout_height="wrap_content" /></RelativeLayout>

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