How can I read an image file into bitmap from sdcard?
_path = Environment.getExternalStorageDirectory().getAbsolutePath();
System.out.println("pathhhhhhhhhhhhhhhhhhhh1111111112222222 " + _path);
_path= _path + "/" + "flower2.jpg";
System.out.println("pathhhhhhhhhhhhhhhhhhhh111111111 " + _path);
Bitmap bitmap = BitmapFactory.decodeFile(_path, options );
I am getting a NullPointerException for bitmap. It means that the bitmap is null. But I have an image ".jpg" file stored in sdcard as "flower2.jpg". What's the problem?
This question is related to
android
android-sdcard
android-image
Try this code:
Bitmap bitmap = null;
File f = new File(_path);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
try {
bitmap = BitmapFactory.decodeStream(new FileInputStream(f), null, options);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
image.setImageBitmap(bitmap);
I wrote the following code to convert an image from sdcard to a Base64 encoded string to send as a JSON object.And it works great:
String filepath = "/sdcard/temp.png";
File imagefile = new File(filepath);
FileInputStream fis = null;
try {
fis = new FileInputStream(imagefile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap bm = BitmapFactory.decodeStream(fis);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100 , baos);
byte[] b = baos.toByteArray();
encImage = Base64.encodeToString(b, Base64.DEFAULT);
It works:
Bitmap bitmap = BitmapFactory.decodeFile(filePath);
Source: Stackoverflow.com