2013-03-12 15:01 4274人阅读 评论(2) 收藏 举报
- package com.soai.imdemo;
- import java.io.ByteArrayInputStream;
- import java.io.ByteArrayOutputStream;
- import java.io.InputStream;
- import android.graphics.Bitmap;
- import android.graphics.BitmapFactory;
- import android.graphics.Canvas;
- import android.graphics.PixelFormat;
- import android.graphics.drawable.BitmapDrawable;
- import android.graphics.drawable.Drawable;
- /**
- * Bitmap与DrawAble与byte[]与InputStream之间的转换工具类
- * @author Administrator
- *
- */
- public class FormatTools {
- private static FormatTools tools = new FormatTools();
- public static FormatTools getInstance() {
- if (tools == null) {
- tools = new FormatTools();
- return tools;
- }
- return tools;
- }
- // 将byte[]转换成InputStream
- public InputStream Byte2InputStream(byte[] b) {
- ByteArrayInputStream bais = new ByteArrayInputStream(b);
- return bais;
- }
- // 将InputStream转换成byte[]
- public byte[] InputStream2Bytes(InputStream is) {
- String str = "";
- byte[] readByte = new byte[1024];
- int readCount = -1;
- try {
- while ((readCount = is.read(readByte, 0, 1024)) != -1) {
- str += new String(readByte).trim();
- }
- return str.getBytes();
- } catch (Exception e) {
- e.printStackTrace();
- }
- return null;
- }
- // 将Bitmap转换成InputStream
- public InputStream Bitmap2InputStream(Bitmap bm) {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- bm.compress(Bitmap.CompressFormat.JPEG, 100, baos);
- InputStream is = new ByteArrayInputStream(baos.toByteArray());
- return is;
- }
- // 将Bitmap转换成InputStream
- public InputStream Bitmap2InputStream(Bitmap bm, int quality) {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- bm.compress(Bitmap.CompressFormat.PNG, quality, baos);
- InputStream is = new ByteArrayInputStream(baos.toByteArray());
- return is;
- }
- // 将InputStream转换成Bitmap
- public Bitmap InputStream2Bitmap(InputStream is) {
- return BitmapFactory.decodeStream(is);
- }
- // Drawable转换成InputStream
- public InputStream Drawable2InputStream(Drawable d) {
- Bitmap bitmap = this.drawable2Bitmap(d);
- return this.Bitmap2InputStream(bitmap);
- }
- // InputStream转换成Drawable
- public Drawable InputStream2Drawable(InputStream is) {
- Bitmap bitmap = this.InputStream2Bitmap(is);
- return this.bitmap2Drawable(bitmap);
- }
- // Drawable转换成byte[]
- public byte[] Drawable2Bytes(Drawable d) {
- Bitmap bitmap = this.drawable2Bitmap(d);
- return this.Bitmap2Bytes(bitmap);
- }
- // byte[]转换成Drawable
- public Drawable Bytes2Drawable(byte[] b) {
- Bitmap bitmap = this.Bytes2Bitmap(b);
- return this.bitmap2Drawable(bitmap);
- }
- // Bitmap转换成byte[]
- public byte[] Bitmap2Bytes(Bitmap bm) {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
- return baos.toByteArray();
- }
- // byte[]转换成Bitmap
- public Bitmap Bytes2Bitmap(byte[] b) {
- if (b.length != 0) {
- return BitmapFactory.decodeByteArray(b, 0, b.length);
- }
- return null;
- }
- // Drawable转换成Bitmap
- public Bitmap drawable2Bitmap(Drawable drawable) {
- Bitmap bitmap = Bitmap
- .createBitmap(
- drawable.getIntrinsicWidth(),
- drawable.getIntrinsicHeight(),
- drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
- : Bitmap.Config.RGB_565);
- Canvas canvas = new Canvas(bitmap);
- drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),
- drawable.getIntrinsicHeight());
- drawable.draw(canvas);
- return bitmap;
- }
- // Bitmap转换成Drawable
- public Drawable bitmap2Drawable(Bitmap bitmap) {
- BitmapDrawable bd = new BitmapDrawable(bitmap);
- Drawable d = (Drawable) bd;
- return d;
- }
- }
转载自:http://my.oschina.net/547217475/blog/93485