Android Bitmap与DrawAble与byte[]与InputStream之间的转换工具类

    [java]

    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;

    }

    }

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