Java tutorial
/* * Copyright (C) 2011 The Stanford MobiSocial Laboratory * * This file is part of Musubi, a mobile social network. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * 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 General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package edu.stanford.mobisocial.dungbeetle.obj.action; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import mobisocial.socialkit.musubi.DbObj; import org.json.JSONObject; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.net.Uri; import android.os.Environment; import android.util.Log; import edu.stanford.mobisocial.dungbeetle.feed.iface.DbEntryHandler; import edu.stanford.mobisocial.dungbeetle.feed.objects.PictureObj; import edu.stanford.mobisocial.dungbeetle.obj.iface.ObjAction; import edu.stanford.mobisocial.dungbeetle.util.BitmapManager; import edu.stanford.mobisocial.dungbeetle.util.FastBase64; /** * Sends a picture object using the standard Android "SEND" intent. * */ public class ExportPhotoAction extends ObjAction { @Override public void onAct(Context context, DbEntryHandler objType, DbObj obj) { byte[] raw = obj.getRaw(); if (raw == null) { String b64Bytes = obj.getJson().optString(PictureObj.DATA); raw = FastBase64.decode(b64Bytes); } OutputStream outStream = null; File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/temp_share.png"); try { outStream = new FileOutputStream(file); BitmapManager mgr = new BitmapManager(1); Bitmap bitmap = mgr.getBitmap(raw.hashCode(), raw); bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream); outStream.flush(); outStream.close(); bitmap.recycle(); bitmap = null; System.gc(); Intent intent = new Intent(android.content.Intent.ACTION_SEND); intent.setType("image/png"); Log.w("ResharePhotoAction", Environment.getExternalStorageDirectory().getAbsolutePath() + "/temp_share.png"); intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file)); context.startActivity(Intent.createChooser(intent, "Export image to")); } catch (Exception e) { e.printStackTrace(); } } @Override public String getLabel(Context context) { return "Export"; } @Override public boolean isActive(Context context, DbEntryHandler objType, JSONObject objData) { /*if (!MusubiBaseActivity.getInstance().isDeveloperModeEnabled()) { return false; }*/ return (objType instanceof PictureObj); } }