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Copyright, David Book, buzztouch.com All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are...
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/* File Version: 3.0 * Copyright, David Book, buzztouch.com */*from w w w .ja va 2 s .c o m*/ * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice which includes the * name(s) of the copyright holders. It must also retain this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * Neither the name of David Book, or buzztouch.com nor the names of its contributors * may be used to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. */ package com.tabatoodemo; import java.io.BufferedReader; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; public class BT_downloader { public static String objectName = "BT_downloader"; private int connectionTimeoutSeconds = 30; private boolean downloadInProgress; private String downloadURL; private String saveAsFileName; //constructor public BT_downloader(String downloadURL){ this.downloadURL = downloadURL; this.saveAsFileName = ""; } //download image from URL, return as drawable... public Drawable downloadDrawable(){ BT_debugger.showIt(objectName + ":downloadDrawable from URL: " + this.downloadURL); setDownloadInProgress(true); InputStream in = null; Drawable d = null; int response = -1; try{ URL url = new URL(this.downloadURL); URLConnection conn = url.openConnection(); if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection"); try{ HttpURLConnection httpConn = (HttpURLConnection) conn; httpConn.setAllowUserInteraction(false); httpConn.setInstanceFollowRedirects(true); httpConn.setConnectTimeout(connectionTimeoutSeconds * 1000); httpConn.setRequestMethod("GET"); httpConn.connect(); response = httpConn.getResponseCode(); if(response == HttpURLConnection.HTTP_OK) { in = httpConn.getInputStream(); }else{ BT_debugger.showIt(objectName + ":downloadImage HTTP response NOT OK, URL: " + url); } Bitmap b = BitmapFactory.decodeStream(in); d = new BitmapDrawable(b); //save to cache if we have a filename... if(this.saveAsFileName.length() > 1 && b != null){ BT_fileManager.saveImageToCache(b, this.saveAsFileName); } }catch (Exception ex){ BT_debugger.showIt(objectName + ":downloadDrawable Exception in httpConnection: " + ex.toString() + " URL: " + url); throw new IOException("Error connecting"); } }catch (Exception e) { d = null; BT_debugger.showIt(objectName + ":downloadImage from URL error: " + this.downloadURL); BT_debugger.showIt(objectName + ":downloadImage Exception: " + e.toString()); } setDownloadInProgress(false); return d; } //download image from URL, return as bitmap... public Bitmap downloadBitmap(){ BT_debugger.showIt(objectName + ":downloadBitmap from URL: " + this.downloadURL); setDownloadInProgress(true); InputStream in = null; Bitmap b = null; int response = -1; try{ URL url = new URL(this.downloadURL); URLConnection conn = url.openConnection(); if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection"); try{ HttpURLConnection httpConn = (HttpURLConnection) conn; httpConn.setAllowUserInteraction(false); httpConn.setInstanceFollowRedirects(true); httpConn.setConnectTimeout(connectionTimeoutSeconds * 1000); httpConn.setRequestMethod("GET"); httpConn.connect(); response = httpConn.getResponseCode(); if(response == HttpURLConnection.HTTP_OK) { in = httpConn.getInputStream(); }else{ BT_debugger.showIt(objectName + ":downloadImage HTTP response NOT OK, URL: " + url); } b = BitmapFactory.decodeStream(in); //save to cache if we have a filename... if(this.saveAsFileName.length() > 1 && b != null){ BT_fileManager.saveImageToCache(b, this.saveAsFileName); } }catch (Exception ex){ BT_debugger.showIt(objectName + ":downloadBitmap Exception in httpConnection: " + ex.toString()); throw new IOException("Error connecting"); } }catch (Exception e) { b = null; BT_debugger.showIt(objectName + ":downloadBitmap from URL error: " + this.downloadURL); BT_debugger.showIt(objectName + ":downloadBitmap Exception: " + e.toString()); } setDownloadInProgress(false); return b; } //download text data from URL... public String downloadTextData(){ BT_debugger.showIt(objectName + ":downloadTextData from URL: " + this.downloadURL); setDownloadInProgress(true); String ret = ""; try{ //create a URL for the desired data URL url = new URL(this.downloadURL); //read all the text returned by the server BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()), 8192); String str; while ((str = in.readLine()) != null) { ret += str; } in.close(); //save to cache if we have a filename... if(this.saveAsFileName.length() > 1 && ret.length() > 1){ BT_fileManager.saveTextFileToCache(ret, this.saveAsFileName); } }catch (Exception e) { ret = ""; BT_debugger.showIt(objectName + ":downloadTextData from URL EXCEPTION: " + e.toString() + " URL: " + this.downloadURL); } //flag, return... setDownloadInProgress(false); return ret; } //download binary data from URL... public String downloadAndSaveBinaryData(){ BT_debugger.showIt(objectName + ":downloadBinaryData from URL: " + this.downloadURL); BT_debugger.showIt(objectName + ":downloadBinaryData Save As File Name:: " + this.saveAsFileName); setDownloadInProgress(true); String ret = ""; try{ //save file location after it's done donwloading... FileOutputStream f = tabatoodemo_appDelegate.getApplication().openFileOutput(saveAsFileName, Context.MODE_WORLD_READABLE); //use Android's built in HTTP Client to download the file... DefaultHttpClient httpClient = new DefaultHttpClient(); //setup HttpGet object (request object) using the URL)... HttpGet request = new HttpGet(this.downloadURL); //execute the request... HttpResponse response = httpClient.execute(request); //setup InputStream to read the bytes of data being downloaded, write bytes to the file... InputStream is = response.getEntity().getContent(); byte[] buffer = new byte[1024]; int len1 = 0; while ( (len1 = is.read(buffer)) > 0 ) { f.write(buffer,0, len1); } f.flush(); f.close(); }catch (Exception e) { ret = ""; BT_debugger.showIt(objectName + ":downloadAndSaveBinaryData from URL EXCEPTION: " + e.toString() + " URL: " + this.downloadURL); } setDownloadInProgress(false); return ret; } //getters / setters public void setDownloadInProgress(boolean downloadInProgress){ this.downloadInProgress = downloadInProgress; } public boolean getDownloadInProgress(){ return downloadInProgress; } public void setDownloadURL(String downloadURL){ this.downloadURL = downloadURL; } public String getDownloadURL(){ return downloadURL; } public void setSaveAsFileName(String saveAsFileName){ this.saveAsFileName = saveAsFileName; } public String getSaveAsFileName(){ return saveAsFileName; } }