提取图像的Thumbnail:
Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null); intent.setType("image/*"); startActivityForResult(intent, REQUEST_CODE_PHOTO_PICKED);protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode != RESULT_OK) {return; } Bitmap bitmap = null; ContentResolver resolver = getContentResolver(); if (requestCode == REQUEST_CODE_PHOTO_PICKED) { try { Uri originalUri = data.getData(); Uri thumb = Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, originalUri.getLastPathSegment()); bitmap = MediaStore.Images.Media.getBitmap(resolver, thumb); } catch (IOException e) { } }}