ResourceCursorAdapter.java revision b721b47811c065d41b1aec23035e8b46c245c86e 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.widget;
18
19import android.content.Context;
20import android.database.Cursor;
21import android.view.View;
22import android.view.ViewGroup;
23import android.view.LayoutInflater;
24
25
26/**
27 * An easy adapter that creates views defined in an XML file. You can specify
28 * the XML file that defines the appearance of the views.
29 */
30public abstract class ResourceCursorAdapter extends CursorAdapter {
31    private int mLayout;
32
33    private int mDropDownLayout;
34
35    private LayoutInflater mInflater;
36
37    /**
38     * Constructor.
39     *
40     * @param context The context where the ListView associated with this adapter is running
41     * @param layout resource identifier of a layout file that defines the views
42     *            for this list item.  Unless you override them later, this will
43     *            define both the item views and the drop down views.
44     */
45    public ResourceCursorAdapter(Context context, int layout, Cursor c) {
46        super(context, c);
47        mLayout = mDropDownLayout = layout;
48        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
49    }
50
51    /**
52     * Constructor.
53     *
54     * @param context The context where the ListView associated with this adapter is running
55     * @param layout resource identifier of a layout file that defines the views
56     *            for this list item.  Unless you override them later, this will
57     *            define both the item views and the drop down views.
58     * @param c The cursor from which to get the data.
59     * @param autoRequery If true the adapter will call requery() on the
60     *                    cursor whenever it changes so the most recent
61     *                    data is always displayed.
62     */
63    public ResourceCursorAdapter(Context context, int layout, Cursor c, boolean autoRequery) {
64        super(context, c, autoRequery);
65        mLayout = mDropDownLayout = layout;
66        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
67    }
68
69    /**
70     * Constructor.
71     *
72     * @param context The context where the ListView associated with this adapter is running
73     * @param layout resource identifier of a layout file that defines the views
74     *            for this list item.  Unless you override them later, this will
75     *            define both the item views and the drop down views.
76     * @param c The cursor from which to get the data.
77     * @param flags flags used to determine the behavior of the adapter
78     */
79    public ResourceCursorAdapter(Context context, int layout, Cursor c, int flags) {
80        super(context, c, flags);
81        mLayout = mDropDownLayout = layout;
82        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
83    }
84
85    /**
86     * Inflates view(s) from the specified XML file.
87     *
88     * @see android.widget.CursorAdapter#newView(android.content.Context,
89     *      android.database.Cursor, ViewGroup)
90     */
91    @Override
92    public View newView(Context context, Cursor cursor, ViewGroup parent) {
93        return mInflater.inflate(mLayout, parent, false);
94    }
95
96    @Override
97    public View newDropDownView(Context context, Cursor cursor, ViewGroup parent) {
98        return mInflater.inflate(mDropDownLayout, parent, false);
99    }
100
101    /**
102     * <p>Sets the layout resource of the item views.</p>
103     *
104     * @param layout the layout resources used to create item views
105     */
106    public void setViewResource(int layout) {
107        mLayout = layout;
108    }
109
110    /**
111     * <p>Sets the layout resource of the drop down views.</p>
112     *
113     * @param dropDownLayout the layout resources used to create drop down views
114     */
115    public void setDropDownViewResource(int dropDownLayout) {
116        mDropDownLayout = dropDownLayout;
117    }
118}
119