从Firebase检索Base64编码图像并在Android应用程序上显示

Question

我正在尝试从Firebase中检索一个Base64编码的图像，并在Android Studio开发的应用程序上显示它。代码正在ImageView元素上放一些东西，但我认为那只是一个白色图像，因为ImageView元素的背景刚好消失了。有人能帮忙吗？

public class MainActivity extends AppCompatActivity {

    private Button setting;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ImageView image = (ImageView) findViewById(R.id.CamaraImage);
        FirebaseDatabase.getInstance().getReference().child("photos").child("realtime").child("-MbB__vRH7wrFXqL_8UO").child("photo").addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                String imagestr = dataSnapshot.getValue(String.class);
                String imageclean = imagestr.replace("data:image/jpeg;base64,", "");
                //64Base to BitMap Conversion
                byte[] decodedString = Base64.decode(imageclean, Base64.DEFAULT);
                Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
                image.setImageBitmap(decodedByte);
                //Toast.makeText(MainActivity.this, imageclean, Toast.LENGTH_SHORT).show();
            }
            @Override
            public void onCancelled(DatabaseError error) {
                // Failed to read value
                Log.w(TAG, "Failed to read value.", error.toException());
            }
        });
}

Answer 1

"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAVI..."

String imageDataBytes = completeImageData.substring(completeImageData.indexOf(",")+1);

InputStream stream = new ByteArrayInputStream(Base64.decode(imageDataBytes.getBytes(), Base64.DEFAULT));