java如何在安卓的图像视图中显示pdf？

Question

下面的代码是从设备中拾取图像。如何从设备中选择pdf。以及如何在图像视图中显示pdf

  bt_gall .setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent intent = new Intent();
                    // Show only images, no videos or anything else
                    intent.setType("image/*");
                    intent.setAction(Intent.ACTION_GET_CONTENT);
                    // Always show the chooser (if there are multiple options available)
                    startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
                    alertDialog.dismiss();
                }
            });

Answer 1

要选择pdf，请尝试以下操作

Intent intent = new Intent();
        intent.setType("application/pdf");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, "Select PDF"), 1);

要将Pdf设置为图像，您需要创建Pdf的缩略图

要创建缩略图，请选中此复选框

https://stackoverflow.com/a/38829523/3416642

希望这对你有帮助