85 lines
2.4 KiB
Java
85 lines
2.4 KiB
Java
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/*
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* Copyright (C) 2008-2009 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.gesture;
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import java.util.ArrayList;
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/**
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* The abstract class of a gesture learner
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*/
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abstract class Learner {
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private final ArrayList<Instance> mInstances = new ArrayList<Instance>();
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/**
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* Add an instance to the learner
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*
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* @param instance
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*/
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void addInstance(Instance instance) {
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mInstances.add(instance);
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}
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/**
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* Retrieve all the instances
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*
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* @return instances
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*/
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ArrayList<Instance> getInstances() {
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return mInstances;
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}
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/**
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* Remove an instance based on its id
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*
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* @param id
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*/
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void removeInstance(long id) {
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ArrayList<Instance> instances = mInstances;
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int count = instances.size();
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for (int i = 0; i < count; i++) {
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Instance instance = instances.get(i);
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if (id == instance.id) {
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instances.remove(instance);
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return;
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}
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}
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}
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/**
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* Remove all the instances of a category
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*
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* @param name the category name
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*/
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void removeInstances(String name) {
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final ArrayList<Instance> toDelete = new ArrayList<Instance>();
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final ArrayList<Instance> instances = mInstances;
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final int count = instances.size();
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for (int i = 0; i < count; i++) {
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final Instance instance = instances.get(i);
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// the label can be null, as specified in Instance
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if ((instance.label == null && name == null)
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toDelete.add(instance);
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}
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}
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instances.removeAll(toDelete);
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}
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abstract ArrayList<Prediction> classify(int sequenceType, int orientationType, float[] vector);
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}
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