tests/TransitionTests/src/com/android/transitiontests/ListViewAddRemoveNoTransition.java

/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.transitiontests;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;


import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class ListViewAddRemoveNoTransition extends Activity {

    final ArrayList<String> numList = new ArrayList<String>();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.list_view_add_remove);

        final LinearLayout container = (LinearLayout) findViewById(R.id.container);

        final ListView listview = (ListView) findViewById(R.id.listview);
        for (int i = 0; i < 200; ++i) {
            numList.add(Integer.toString(i));
        }
        final StableArrayAdapter adapter = new StableArrayAdapter(this,
                android.R.layout.simple_list_item_1, numList);
        listview.setAdapter(adapter);

        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {
                String item = (String) parent.getItemAtPosition(position);
                for (int i = 0; i < listview.getChildCount(); ++i) {
                    TextView v = (TextView) listview.getChildAt(i);
                    if (!item.equals(v.getText())) {
                        v.setHasTransientState(true);
                    }
                }
                numList.remove(item);
                adapter.notifyDataSetChanged();
                view.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        for (int i = 0; i < listview.getChildCount(); ++i) {
                            TextView v = (TextView) listview.getChildAt(i);
                            v.setHasTransientState(false);
                        }
                    }
                }, 200);
            }

        });
    }

    private class StableArrayAdapter extends ArrayAdapter<String> {

        HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();

        public StableArrayAdapter(Context context, int textViewResourceId,
                List<String> objects) {
            super(context, textViewResourceId, objects);
            for (int i = 0; i < objects.size(); ++i) {
                mIdMap.put(objects.get(i), i);
            }
        }

        @Override
        public long getItemId(int position) {
            String item = getItem(position);
            return mIdMap.get(item);
        }

        @Override
        public boolean hasStableIds() {
            return true;
        }

    }
}