无法在“图像视图"中设置Firebase Image Uri

问题描述

我正在从Firebase数据库中检索图像并将其设置在图像视图"中.我正在使用以下代码.

I am retrieving an image from my firebase database and setting it in an Image View.I am using the following code.

mStorageRef.child("Book_Photos/"+firstBook.bid).getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
            @Override
            public void onSuccess(Uri uri) {
                Toast.makeText(getApplicationContext(), "GET IMAGE SUCCESSFUL",Toast.LENGTH_LONG).show();
                if(uri==null){
                    Toast.makeText(getApplicationContext(), "URI IS NULL",Toast.LENGTH_LONG).show();
                }
                try {
                    ImageView image2;
                    image2=(ImageView)findViewById(R.id.imageView);
                    image2.setImageURI(null);
                    image2.setImageURI(uri);

                }
                catch (Exception e){

                }
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception exception) {
                Toast.makeText(getApplicationContext(), "GET IMAGE FAILED",Toast.LENGTH_LONG).show();
                // Handle any errors
            }
        });

我正在检索的图像未设置.获取图像成功"吐司可以工作."URI IS NULL"吐司不起作用.该命令image2.setImageURI(null)有效.

The image I am retrieving is not being set.The "GET IMAGE SUCCESSFUL" toast works.The "URI IS NULL" toast does not work.The command image2.setImageURI(null) works.

image2.setImageURI(uri)不能正常工作.

Just image2.setImageURI(uri) is not working.

推荐答案

您不能将图像直接从Internet加载到ImageView.但是您可以使用 Glide 之类的库来执行此操作.要将Glide添加到您的应用中，您需要将此行添加到您的依赖项中:

You can't load images from the internet directly to an ImageView. But you can use a library like Glide to do it. To add Glide to your app, you need to add this line to your dependecies:

implementation 'com.github.bumptech.glide:glide:4.8.0'

并加载图片:

Glide
    .with(getContext())
    .load(uri) // the uri you got from Firebase
    .centerCrop()
    .into(image2); //Your imageView variable

这篇关于无法在“图像视图"中设置Firebase Image Uri的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！