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82744e9e5e
Many of these classes are only needed to be subclassed by androidx support library, which is used in many android apps
42 lines
1.4 KiB
Java
42 lines
1.4 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.database;
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/**
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* Receives call backs when a data set has been changed, or made invalid. The typically data sets
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* that are observed are {@link Cursor}s or {@link android.widget.Adapter}s.
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* DataSetObserver must be implemented by objects which are added to a DataSetObservable.
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*/
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public abstract class DataSetObserver {
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/**
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* This method is called when the entire data set has changed,
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* most likely through a call to {@link Cursor#requery()} on a {@link Cursor}.
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*/
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public void onChanged() {
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// Do nothing
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}
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/**
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* This method is called when the entire data becomes invalid,
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* most likely through a call to {@link Cursor#deactivate()} or {@link Cursor#close()} on a
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* {@link Cursor}.
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*/
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public void onInvalidated() {
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// Do nothing
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}
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}
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