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Android列表实现(2)_游标列表案例讲解

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复制代码 代码如下

import android.app.ListActivity; import android.database.Cursor; import android.os.Bundle; import android.provider.Contacts.Phones; import android.widget.ListAdapter; import android.widget.SimpleCursorAdapter; /** * A list view example where the * data comes from a cursor, and a * SimpleCursorListAdapter is used to map each item to a two-line * display. */ public class List3 extends ListActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get a cursor with all phones Cursor c = getContentResolver().query(Phones.CONTENT_URI, null, null, null, null); startManagingCursor(c); // Map Cursor columns to views defined in simple_list_item_2.xml ListAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_2, c, new String[] { Phones.NAME, Phones.NUMBER }, new int[] { android.R.id.text1, android.R.id.text2 }); setListAdapter(adapter); } } 。

注意 该例子要给程序赋予权限:

复制代码 代码如下

<uses-permission android:name="android.permission.READ_CONTACTS"/> 。

simple_list_item_2.xml 。

复制代码 代码如下

<?xml version="1.0" encoding="utf-8"?> <!-- Copyright (C) 2006 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. --> <TwoLineListItem xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:minHeight="?android:attr/listPreferredItemHeight" android:mode="twoLine" > <TextView android:id="@android:id/text1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="?android:attr/listPreferredItemPaddingLeft" android:layout_marginTop="8dip" android:textAppearance="?android:attr/textAppearanceListItem" /> <TextView android:id="@android:id/text2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@android:id/text1" android:layout_alignLeft="@android:id/text1" android:textAppearance="?android:attr/textAppearanceSmall" /> </TwoLineListItem> 。

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