Android Bitmap与String相互转换

/**

* 图片转成string

* 

* @param bitmap

* @return

*/

public static String convertIconToString(Bitmap bitmap) {

ByteArrayOutputStream baos = new ByteArrayOutputStream();// outputstream

bitmap.compress(CompressFormat.PNG, 100, baos);

byte[] appicon = baos.toByteArray();// 转为byte数组

return Base64.encodeToString(appicon, Base64.DEFAULT);

}

/**

* string转成bitmap

* 

* @param st

*/

public static Bitmap convertStringToIcon(String st) {

// OutputStream out;

Bitmap bitmap = null;

try {

// out = new FileOutputStream("/sdcard/aa.jpg");

byte[] bitmapArray;

bitmapArray = Base64.decode(st, Base64.DEFAULT);

bitmap = BitmapFactory.decodeByteArray(bitmapArray, 0, bitmapArray.length);

// bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);

return bitmap;

} catch (Exception e) {

return null;

}

}