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1 | /* |
2 | * Copyright (C) 2011 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 | |
17 | package android.support.v2.widget; |
18 | |
19 | import android.content.Context; |
20 | import android.database.Cursor; |
21 | import android.view.View; |
22 | import android.view.ViewGroup; |
23 | import android.view.LayoutInflater; |
24 | |
25 | /** |
26 | * Static library support version of the framework's {@link android.widget.ResourceCursorAdapter}. |
27 | * Used to write apps that run on platforms prior to Android 3.0. When running |
28 | * on Android 3.0 or above, this implementation is still used; it does not try |
29 | * to switch to the framework's implementation. See the framework SDK |
30 | * documentation for a class overview. |
31 | */ |
32 | public abstract class ResourceCursorAdapter extends CursorAdapter { |
33 | private int mLayout; |
34 | |
35 | private int mDropDownLayout; |
36 | |
37 | private LayoutInflater mInflater; |
38 | |
39 | /** |
40 | * Constructor the enables auto-requery. |
41 | * |
42 | * @deprecated This option is discouraged, as it results in Cursor queries |
43 | * being performed on the application's UI thread and thus can cause poor |
44 | * responsiveness or even Application Not Responding errors. As an alternative, |
45 | * use {@link android.app.LoaderManager} with a {@link android.content.CursorLoader}. |
46 | * |
47 | * @param context The context where the ListView associated with this adapter is running |
48 | * @param layout resource identifier of a layout file that defines the views |
49 | * for this list item. Unless you override them later, this will |
50 | * define both the item views and the drop down views. |
51 | */ |
52 | @Deprecated |
53 | public ResourceCursorAdapter(Context context, int layout, Cursor c) { |
54 | super(context, c); |
55 | mLayout = mDropDownLayout = layout; |
56 | mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
57 | } |
58 | |
59 | /** |
60 | * Constructor with default behavior as per |
61 | * {@link CursorAdapter#CursorAdapter(Context, Cursor, boolean)}; it is recommended |
62 | * you not use this, but instead {@link #ResourceCursorAdapter(Context, int, Cursor, int)}. |
63 | * When using this constructor, {@link #FLAG_REGISTER_CONTENT_OBSERVER} |
64 | * will always be set. |
65 | * |
66 | * @param context The context where the ListView associated with this adapter is running |
67 | * @param layout resource identifier of a layout file that defines the views |
68 | * for this list item. Unless you override them later, this will |
69 | * define both the item views and the drop down views. |
70 | * @param c The cursor from which to get the data. |
71 | * @param autoRequery If true the adapter will call requery() on the |
72 | * cursor whenever it changes so the most recent |
73 | * data is always displayed. Using true here is discouraged. |
74 | */ |
75 | public ResourceCursorAdapter(Context context, int layout, Cursor c, boolean autoRequery) { |
76 | super(context, c, autoRequery); |
77 | mLayout = mDropDownLayout = layout; |
78 | mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
79 | } |
80 | |
81 | /** |
82 | * Standard constructor. |
83 | * |
84 | * @param context The context where the ListView associated with this adapter is running |
85 | * @param layout Resource identifier of a layout file that defines the views |
86 | * for this list item. Unless you override them later, this will |
87 | * define both the item views and the drop down views. |
88 | * @param c The cursor from which to get the data. |
89 | * @param flags Flags used to determine the behavior of the adapter, |
90 | * as per {@link CursorAdapter#CursorAdapter(Context, Cursor, int)}. |
91 | */ |
92 | public ResourceCursorAdapter(Context context, int layout, Cursor c, int flags) { |
93 | super(context, c, flags); |
94 | mLayout = mDropDownLayout = layout; |
95 | mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
96 | } |
97 | |
98 | /** |
99 | * Inflates view(s) from the specified XML file. |
100 | * |
101 | * @see android.widget.CursorAdapter#newView(android.content.Context, |
102 | * android.database.Cursor, ViewGroup) |
103 | */ |
104 | @Override |
105 | public View newView(Context context, Cursor cursor, ViewGroup parent) { |
106 | return mInflater.inflate(mLayout, parent, false); |
107 | } |
108 | |
109 | @Override |
110 | public View newDropDownView(Context context, Cursor cursor, ViewGroup parent) { |
111 | return mInflater.inflate(mDropDownLayout, parent, false); |
112 | } |
113 | |
114 | /** |
115 | * <p>Sets the layout resource of the item views.</p> |
116 | * |
117 | * @param layout the layout resources used to create item views |
118 | */ |
119 | public void setViewResource(int layout) { |
120 | mLayout = layout; |
121 | } |
122 | |
123 | /** |
124 | * <p>Sets the layout resource of the drop down views.</p> |
125 | * |
126 | * @param dropDownLayout the layout resources used to create drop down views |
127 | */ |
128 | public void setDropDownViewResource(int dropDownLayout) { |
129 | mDropDownLayout = dropDownLayout; |
130 | } |
131 | } |