Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE
 * WARRANTY OF NON INFRINGEMENT  OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA.
 */

import java.util.List;
import android.app.Activity;

import android.content.Context;

import android.content.Intent;
import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;
import android.net.Uri;

public class Main {
    /** ID of app "OI Notepad" to find out if it is already installed on the device and
     *  to open the entry in the appstore if needed.
     */
    public static final String APPID_OF_OPENINTENT_NOTEPAD = "org.openintents.notepad";

    /**
     * Method to open entry of app "OI Notepad" in Google's appstore.
     * Before the intent is actually is dispatched method 
     * {@link de.chbosync.android.syncmlclient.source.pim.note.OINoteCheckInstalled#isIntentSupported(Intent, Context)}
     * is invoked to find out if the current device can handle this intent 
     * (if we would dispatch this intent and the device is not capable of handling it, 
     * then the app would crash). 
     * 
     * @param activity Reference to callling activity, needed to dispatch implicit intent.
     * 
     * @return <tt>True</tt> if no error occured, <tt>false</tt> if an error occured.
     */
    public static boolean openEntryForOINotepadInAppstore(Activity activity) {

        Intent intent = createIntentForOINotepadAppstoreEntry();

        if (isIntentToOpenAppStoreClientSupported(activity)) {

            activity.startActivity(intent);
            return true;

        } else {

            return false;
        }
    }

    /**
     * Creates implicit intent to open entry of app "OI Notepad" in device's appstore client. 
     * 
     * @return Intent to open entry of "OI Notepad" on appstore client.
     */
    protected static Intent createIntentForOINotepadAppstoreEntry() {

        Uri uri = Uri.parse("market://details?id=" + APPID_OF_OPENINTENT_NOTEPAD);
        final Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(uri);

        return intent;
    }

    /**
     * Method to check if implicit intent to open entry for app "OI Notepad" in appstore client on current
     * device can be handled.
     * If you try to dispatch the request to open an entry in the appstore client when no appstore client
     * is installed on the device, then the app will immediately crash. 
     * 
     * @param context Context (e.g. self-reference of calling activity) needed for accessing package manager.
     * 
     * @return <tt>True</tt> if intent to open appstore entry for "OI Notepad" can be handled, <tt>false</tt>
     *         otherwise.
     */
    public static boolean isIntentToOpenAppStoreClientSupported(Context context) {

        final int flags = PackageManager.MATCH_DEFAULT_ONLY;

        PackageManager packageManager = context.getPackageManager();

        Intent intent = createIntentForOINotepadAppstoreEntry();

        List<ResolveInfo> list = packageManager.queryIntentActivities(intent, flags);

        // If at least one app was found that can handle the intent then this method returns "true"
        return list.size() > 0;
    }
}