Java tutorial
/* * Copyright (C) 2013 Chris Lacy * * 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 org.tweetalib.android.model; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Environment; import org.appdotnet4j.model.AdnPostCompose; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import twitter4j.StatusUpdate; public class TwitterStatusUpdate { public TwitterStatusUpdate(String status, Long inReplyToStatusId) { mStatus = status; mInReplyToStatusId = inReplyToStatusId; } public TwitterStatusUpdate(String status) { this(status, null); } public StatusUpdate getT4JStatusUpdate() { StatusUpdate statusUpdate = new StatusUpdate(mStatus); if (mInReplyToStatusId != null) { statusUpdate.setInReplyToStatusId(mInReplyToStatusId); } if (mMediaFilePath != null) { try { statusUpdate.setMedia(getMediaFile(mMediaFilePath)); } catch (IOException error) { error.printStackTrace(); } catch (OutOfMemoryError error) { error.printStackTrace(); } } return statusUpdate; } public AdnPostCompose getAdnComposePost() { File mediaFile = null; try { mediaFile = getMediaFile(mMediaFilePath); } catch (IOException error) { error.printStackTrace(); } catch (OutOfMemoryError error) { error.printStackTrace(); } return new AdnPostCompose(mStatus, mInReplyToStatusId, mediaFile); } public void setMediaFilePath(String mediaFilePath) { mMediaFilePath = mediaFilePath; } private final String mStatus; private final Long mInReplyToStatusId; private String mMediaFilePath; private static File getMediaFile(String mediaFilePath) throws IOException { if (mediaFilePath == null) { return null; } File originalFile = new File(mediaFilePath); Bitmap resizeImage = TryResizeImage(originalFile); if (resizeImage == null) { return originalFile; } File resizedFile = SaveImage(resizeImage); if (resizedFile == null) { return originalFile; } return resizedFile; } private static Bitmap TryResizeImage(File originalFile) throws FileNotFoundException { Bitmap resizeImage = null; BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; //Returns null, sizes are in the options variable BitmapFactory.decodeStream(new FileInputStream(originalFile), null, options); int width_tmp = options.outWidth; int height_tmp = options.outHeight; int scale = 1; int requiredWidth = 1500; int requiredHeight = 1500; while (width_tmp / 2 >= requiredWidth || height_tmp / 2 >= requiredHeight) { width_tmp /= 2; height_tmp /= 2; scale *= 2; } if (scale > 1) { // decode with inSampleSize options = new BitmapFactory.Options(); options.inSampleSize = scale; resizeImage = BitmapFactory.decodeStream(new FileInputStream(originalFile), null, options); } return resizeImage; } private static File SaveImage(Bitmap resizeImage) { final File path = new File(Environment.getExternalStorageDirectory(), "temp/images/Tweet Lanes"); File tempFile = null; OutputStream outStream = null; try { path.mkdirs(); tempFile = File.createTempFile("img", ".jpeg", path); outStream = new BufferedOutputStream(new FileOutputStream(tempFile)); resizeImage.compress(Bitmap.CompressFormat.JPEG, 100, outStream); } catch (Exception ex) { tempFile = null; } finally { if (outStream != null) { try { outStream.close(); resizeImage.recycle(); } catch (IOException e) { e.printStackTrace(); } } } return tempFile; } }