1、将byte[]转换成InputStream
byte[] b;
ByteArrayInputStream bais = new ByteArrayInputStream(b);2、 将InputStream转换成byte[]
(1)
InputStream inStream;
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
byte[] buff = new byte[100];
int rc = 0;
try {
while ((rc = inStream.read(buff, 0, 100)) > 0) {
swapStream.write(buff, 0, rc);
}
} catch (IOException e) {
e.printStackTrace();
}
byte[] in2b = swapStream.toByteArray();
(2)
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();
} catch (Exception e) {
e.printStackTrace();
}
byte[] in2b = str.getBytes();
3、 Bitmap转换成byte[]
Bitmap bm;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] b = baos.toByteArray();
4、 byte[]转换成Bitmap
byte[] b;
if (b.length != 0)Bitmap bm = BitmapFactory.decodeByteArray(b, 0, b.length);
5、Drawable转换成Bitmap
Drawable drawable;
Bitmap bitmap = Bitmap
.createBitmap(
drawable.getIntrinsicWidth(),
drawable.getIntrinsicHeight(),
drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
: Bitmap.Config.RGB_565);
6、 Bitmap转换成Drawable
Bitmap bitmap;
BitmapDrawable bd = new BitmapDrawable(bitmap);
Drawable d = (Drawable) bd;
7、 将Bitmap转换成InputStream
Bitmap bm;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream is = new ByteArrayInputStream(baos.toByteArray());
8、 将InputStream转换成Bitmap
InputStream is;
Bitmap bm = BitmapFactory.decodeStream(is);
9、 Drawable转换成InputStream
Drawable d;
//先把drawable转换成Bitmap
//再把Bitmap 转换成 InputStream
10、 InputStream转换成Drawable
InputStream is;
//先把InputStream 转换成 Bitmap
//再把Bitmap 转换成 Drawable
11、 Drawable转换成byte[]
Drawable d;
//先把Drawable 转换成 Bitmap
//再把Bitmap 转换成 byte[]
12、 byte[]转换成Drawable
byte[] b;
//先把byte[] 转换成 Bitmap
//再把Bitmap 转换成 Drawable