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



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1. package com.soai.imdemo;  
2.   
3. import java.io.ByteArrayInputStream;  
4. import java.io.ByteArrayOutputStream;  
5. import java.io.InputStream;  
6.   
7. import android.graphics.Bitmap;  
8. import android.graphics.BitmapFactory;  
9. import android.graphics.Canvas;  
10. import android.graphics.PixelFormat;  
11. import android.graphics.drawable.BitmapDrawable;  
12. import android.graphics.drawable.Drawable;  
13.   
14. /** 
15.  * Bitmap与DrawAble与byte[]与InputStream之间的转换工具类 
16.  * @author Administrator 
17.  * 
18.  */  
19. public class FormatTools {  
20.     private static FormatTools tools = new FormatTools();  
21.   
22.     public static FormatTools getInstance() {  
23.         if (tools == null) {  
24.             tools = new FormatTools();  
25.             return tools;  
26.         }  
27.         return tools;  
28.     }  
29.   
30.     // 将byte[]转换成InputStream  
31.     public InputStream Byte2InputStream(byte[] b) {  
32.         ByteArrayInputStream bais = new ByteArrayInputStream(b);  
33.         return bais;  
34.     }  
35.   
36.     // 将InputStream转换成byte[]  
37.     public byte[] InputStream2Bytes(InputStream is) {  
38.         String str = "";  
39.         byte[] readByte = new byte[1024];  
40.         int readCount = -1;  
41.         try {  
42.             while ((readCount = is.read(readByte, 0, 1024)) != -1) {  
43.                 str += new String(readByte).trim();  
44.             }  
45.             return str.getBytes();  
46.         } catch (Exception e) {  
47.             e.printStackTrace();  
48.         }  
49.         return null;  
50.     }  
51.   
52.     // 将Bitmap转换成InputStream  
53.     public InputStream Bitmap2InputStream(Bitmap bm) {  
54.         ByteArrayOutputStream baos = new ByteArrayOutputStream();  
55.         bm.compress(Bitmap.CompressFormat.JPEG, 100, baos);  
56.         InputStream is = new ByteArrayInputStream(baos.toByteArray());  
57.         return is;  
58.     }  
59.   
60.     // 将Bitmap转换成InputStream  
61.     public InputStream Bitmap2InputStream(Bitmap bm, int quality) {  
62.         ByteArrayOutputStream baos = new ByteArrayOutputStream();  
63.         bm.compress(Bitmap.CompressFormat.PNG, quality, baos);  
64.         InputStream is = new ByteArrayInputStream(baos.toByteArray());  
65.         return is;  
66.     }  
67.   
68.     // 将InputStream转换成Bitmap  
69.     public Bitmap InputStream2Bitmap(InputStream is) {  
70.         return BitmapFactory.decodeStream(is);  
71.     }  
72.   
73.     // Drawable转换成InputStream  
74.     public InputStream Drawable2InputStream(Drawable d) {  
75.         Bitmap bitmap = this.drawable2Bitmap(d);  
76.         return this.Bitmap2InputStream(bitmap);  
77.     }  
78.   
79.     // InputStream转换成Drawable  
80.     public Drawable InputStream2Drawable(InputStream is) {  
81.         Bitmap bitmap = this.InputStream2Bitmap(is);  
82.         return this.bitmap2Drawable(bitmap);  
83.     }  
84.   
85.     // Drawable转换成byte[]  
86.     public byte[] Drawable2Bytes(Drawable d) {  
87.         Bitmap bitmap = this.drawable2Bitmap(d);  
88.         return this.Bitmap2Bytes(bitmap);  
89.     }  
90.   
91.     // byte[]转换成Drawable  
92.     public Drawable Bytes2Drawable(byte[] b) {  
93.         Bitmap bitmap = this.Bytes2Bitmap(b);  
94.         return this.bitmap2Drawable(bitmap);  
95.     }  
96.   
97.     // Bitmap转换成byte[]  
98.     public byte[] Bitmap2Bytes(Bitmap bm) {  
99.         ByteArrayOutputStream baos = new ByteArrayOutputStream();  
100.         bm.compress(Bitmap.CompressFormat.PNG, 100, baos);  
101.         return baos.toByteArray();  
102.     }  
103.   
104.     // byte[]转换成Bitmap  
105.     public Bitmap Bytes2Bitmap(byte[] b) {  
106.         if (b.length != 0) {  
107.             return BitmapFactory.decodeByteArray(b, 0, b.length);  
108.         }  
109.         return null;  
110.     }  
111.   
112.     // Drawable转换成Bitmap  
113.     public Bitmap drawable2Bitmap(Drawable drawable) {  
114.         Bitmap bitmap = Bitmap  
115.                 .createBitmap(  
116.                         drawable.getIntrinsicWidth(),  
117.                         drawable.getIntrinsicHeight(),  
118.                         drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888  
119.                                 : Bitmap.Config.RGB_565);  
120.         Canvas canvas = new Canvas(bitmap);  
121.         drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),  
122.                 drawable.getIntrinsicHeight());  
123.         drawable.draw(canvas);  
124.         return bitmap;  
125.     }  
126.   
127.     // Bitmap转换成Drawable  
128.     public Drawable bitmap2Drawable(Bitmap bitmap) {  
129.         BitmapDrawable bd = new BitmapDrawable(bitmap);  
130.         Drawable d = (Drawable) bd;  
131.         return d;  
132.     }  
133. }  

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