Java tutorial
//package com.java2s; /******************************************************************************* * Copyright 2013 PAR Works, Inc * * 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. ******************************************************************************/ import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.InputStream; import android.graphics.Bitmap; import android.graphics.Bitmap.CompressFormat; import android.graphics.BitmapFactory; public class Main { /** * Converts an inputstream into a bitmap using the BITMAP_SAMPLE_SIZE; * @param in the inputstream containing a bitmap * @return the bitmap */ public static Bitmap convertBitmap(InputStream in, int sampleSize) { BitmapFactory.Options options = new BitmapFactory.Options(); options.inSampleSize = sampleSize; return BitmapFactory.decodeStream(in, null, options); } /** * Converts a bitmap into an inputstream * @param image the bitmap * @return the inputstream */ public static InputStream convertBitmap(Bitmap image) { ByteArrayOutputStream bos = new ByteArrayOutputStream(); image.compress(CompressFormat.PNG, 0 /* ignored for PNG */, bos); byte[] bitmapdata = bos.toByteArray(); return new ByteArrayInputStream(bitmapdata); } }