文件转为bitmap bitmap转为base64 以及bas
/**
* bitmap转为base64
*
* @param bitmap
* @return
*/
public static StringbitmapToBase64(Bitmap bitmap) {
String result =null;
ByteArrayOutputStream baos =null;
try {
if (bitmap !=null) {
baos =new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
baos.flush();
baos.close();
byte[] bitmapBytes = baos.toByteArray();
result = Base64.encodeToString(bitmapBytes, Base64.DEFAULT);
}
}catch (IOException e) {
e.printStackTrace();
}finally {
try {
if (baos !=null) {
baos.flush();
baos.close();
}
}catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
/**
* 文件转base64字符串
* @param file
* @return
*/
public static StringfileToBase64(File file) {
String base64 =null;
InputStream in =null;
try {
in =new FileInputStream(file);
byte[] bytes =new byte[in.available()];
int length = in.read(bytes);
base64 = Base64.encodeToString(bytes, 0, length, Base64.DEFAULT);
}catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally {
try {
if (in !=null) {
in.close();
}
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return base64;
}
/**
* base64转为bitmap
*
* @param base64Data
* @return
*/
public static Bitmapbase64ToBitmap(String base64Data) {
byte[] bytes = Base64.decode(base64Data, Base64.DEFAULT);
return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
}
