| 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 | } |