Examples.java

/*
 *  Copyright (c) 2012 The Android Open Source Project, Daniel Huckaby
 *
 *  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.handlerexploit.prime.example;

import java.text.Collator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.ListActivity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;

/**
 * This class is responsible for displaying all avaliable api examples to the
 * user. This is a cut down version of the AOSP ApiDemos switcher.
 */
public class Examples extends ListActivity {

    private static final String ACTION_EXAMPLE = "com.handlerexploit.prime.example.EXAMPLE";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setListAdapter(new SimpleAdapter(this, getData(),
                android.R.layout.simple_list_item_1, new String[] { "title" },
                new int[] { android.R.id.text1 }));
        getListView().setTextFilterEnabled(true);
    }

    private List<Map<String, Object>> getData() {
        List<Map<String, Object>> data = new ArrayList<Map<String, Object>>();

        Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(ACTION_EXAMPLE);

        PackageManager pm = getPackageManager();
        List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0);

        if (list != null) {
            
            for (int i = 0; i < list.size(); i++) {
                ResolveInfo info = list.get(i);
                CharSequence labelSeq = info.loadLabel(pm);
                String label = labelSeq != null ? labelSeq.toString() : info.activityInfo.name;

                String[] labelPath = label.split("/");

                String nextLabel = labelPath[0];

                if (labelPath.length - 1 == 0) {
                    
                    Map<String, Object> temp = new HashMap<String, Object>();
                    
                    temp.put("title", nextLabel);
                    
                    Intent intent = new Intent();
                    intent.setClassName(info.activityInfo.applicationInfo.packageName, info.activityInfo.name);
                    temp.put("intent", intent);
                    
                    data.add(temp);
                }
            }

            Collections.sort(data, sDisplayNameComparator);
        }

        return data;
    }

    private final static Comparator<Map<String, Object>> sDisplayNameComparator = new Comparator<Map<String, Object>>() {
        private final Collator collator = Collator.getInstance();

        @Override
        public int compare(Map<String, Object> map1, Map<String, Object> map2) {
            return collator.compare(map1.get("title"), map2.get("title"));
        }
    };

    @Override
    @SuppressWarnings("unchecked")
    protected void onListItemClick(ListView l, View v, int position, long id) {
        Map<String, Object> map = (Map<String, Object>) l.getItemAtPosition(position);
        Intent intent = (Intent) map.get("intent");
        startActivity(intent);
    }
}