Question

我正在尝试在Android应用程序中更改Google Maps标记，因此尝试了这种方式：

mMap.addMarker(new MarkerOptions().position(player).title("player").icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher_foreground)));

但是它说我必须使用位图图像，我该怎么办？

FATAL EXCEPTION: main Process: com.example.crosilla.mappeprova2, PID: 18930 
com.google.maps.api.android.lib6.common.apiexception.b: Failed to decode image. The provided image must be a Bitmap

Answer 1

您的代码看起来还不错。尝试使用mipmap文件夹中的资源。

Answer 2

call this on button click:
       startActivityForResult(Intent.createChooser(intent, "Select Picture"), RESULT_LOAD_IMAGE);
then :
   @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {

            dialog = new ProgressDialog(PhotoUpload.this);
            dialog.setMessage("Please wait......");
            dialog.setCancelable(false);
            dialog.show();

            Uri selectedImage = data.getData();

            SharedPreferences sharedPreferences = getSharedPreferences("SavedPhoto", Context.MODE_PRIVATE);

            Bitmap photo = null;
            try {
                photo = MediaStore.Images.Media.getBitmap(getContentResolver(), selectedImage);
            } catch (IOException e) {
                e.printStackTrace();
            }

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            photo.compress(Bitmap.CompressFormat.JPEG, 100, baos);

            byte[] b = baos.toByteArray();

            String encodedImage = Base64.encodeToString(b, Base64.DEFAULT);

                 byte[] decodedString = Base64.decode(encodedImage , Base64.DEFAULT);
                Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
                CircularImageView imageView = findViewById(R.id.profileimage);
                imageView.setImageBitmap(decodedByte);

        }
    }

我需要使用位图图像，但我不知道如何

2 个答案: