Android Open Source - SystemAppMover App Picker

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2014 Thomas Hoffmann/*from w  ww  .java  2s.  com*/
 * 
 * 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 de.j4velin.systemappmover;

import android.app.ProgressDialog;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;


/**
 * Class to list all installed app.
 * <p/>
 * The actual moving happens in the AppClickListener class when an item is clicked.
 */
public class AppPicker extends AsyncTask<Void, Void, Void> {

    List<Drawable> icons;
    List<ApplicationInfo> apps;
    PackageManager pm;
    private ProgressDialog progress;
    final MoverActivity activity;

    public AppPicker(final MoverActivity a) {
        activity = a;
    }

    @Override
    protected void onPreExecute() {
        pm = activity.getPackageManager();
        progress = ProgressDialog.show(activity, "", "Loading apps", true);
    }

    @Override
    protected void onPostExecute(Void a) {
        try {
            progress.cancel();
        } catch (IllegalArgumentException e) {
            if (BuildConfig.DEBUG) Logger.log(e);
        }
        if (apps == null || apps.isEmpty()) {
            activity.showErrorDialog("Error loadings apps!");
        } else {
            ListView liste = (ListView) activity.findViewById(R.id.apps);
            liste.setAdapter(new EfficientAdapter(activity, this));
            liste.setOnItemClickListener(new AppClickListener(this));
        }
    }

    @Override
    protected Void doInBackground(Void... params) {
        // load all apps and their icons, sort them alphabetical
        apps = pm.getInstalledApplications(0);
        if (!MoverActivity.SHOW_SYSTEM_APPS) {
            Iterator<ApplicationInfo> it = apps.iterator();
            ApplicationInfo app;
            while (it.hasNext()) {
                app = it.next();
                if ((app.flags & ApplicationInfo.FLAG_SYSTEM) == 1) it.remove();
            }
        }
        try {
            Collections.sort(apps, new Comparator<ApplicationInfo>() {
                public int compare(final ApplicationInfo app1, final ApplicationInfo app2) {
                    try {
                        return app1.loadLabel(pm).toString().toLowerCase()
                                .compareTo(app2.loadLabel(pm).toString().toLowerCase());
                    } catch (Exception e) {
                        e.printStackTrace();
                        return 0;
                    }
                }
            });
        } catch (IllegalArgumentException iae) {
        }

        icons = new ArrayList<Drawable>(apps.size());
        try {
            for (int i = 0; i < apps.size(); i++) {
                icons.add(apps.get(i).loadIcon(pm));
            }
        } catch (OutOfMemoryError oom) {
        }
        return null;
    }

}

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