尝试获取downloadUrl链接并将其放入数据库中的“ profile / imageURL”节点。
我是Firebase和android开发的新手，因此我正在阅读存储中的发行说明等，并注意到in the notes并在downloadUrl上找到了信息。我了解有关此主题的问题很多，但很难将其应用于此代码。
“不推荐使用StorageMetadata类的getDownloadUrl（）和getDownloadUrls（）方法。请改用StorageReference.getDownloadUrl（）。”
但是我试图不从firebase存储中存储的元数据中拉出downloadUrl链接
我可以成功将图片上传到Firebase存储，但是当我将downloadUrl放入Firebase DB到我想要的节点中时。它输入“ com.google.android.gms.tasks.zzu@xxxxx”
final String downloadUrl = task.getResult().getStorage().getDownloadUrl().toString();
UserProfileRef.child("profile").child("imageURL").setValue(downloadUrl)
我尝试了以下2个代码，此代码输出uri com.google.xxxx
protected void onActivityResult( int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==Gallery_Pick && resultCode==RESULT_OK && data!=null)
{
Uri ImageUri = data.getData();
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1,1)
.start(this);
}
if (requestCode==CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE)
{
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if(resultCode == RESULT_OK)
{
loadingBar.setTitle("Profile Image");
loadingBar.setMessage("Please wait, while we are uploading image...");
loadingBar.setCanceledOnTouchOutside(true);
loadingBar.show();
Uri resultUri = result.getUri();
StorageReference filePath = UserProfileImageRef.child(currentUserID + ".jpg");
filePath.putFile(resultUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
@Override
public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {
if(task.isSuccessful())
{
Toast.makeText(ProfileActivity.this, "Profile Image stored Successfully to the the storage...", Toast.LENGTH_SHORT).show();
final String downloadUrl = task.getResult().getStorage().getDownloadUrl().toString();
UserProfileRef.child("profile").child("imageURL").setValue(downloadUrl)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task)
{
if(task.isSuccessful())
{
Intent selfIntent = new Intent(ProfileActivity.this, ProfileActivity.class);
startActivity(selfIntent);
Toast.makeText(ProfileActivity.this, "Profile image stored to firebase database successfully.", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
else
{
String message = task.getException().getMessage();
Toast.makeText(ProfileActivity.this, "Error Occured..." + message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
}
});
}
else
{
Toast.makeText(this, "Error Occured: Image can't be cropped, try again..", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
}
在其他用户的问题帮助下尝试了第二个代码，并尝试以这种方式解决。虽然我在.setValue（downloadUrl）上出现错误
protected void onActivityResult( int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==Gallery_Pick && resultCode==RESULT_OK && data!=null)
{
Uri ImageUri = data.getData();
CropImage.activity()
.setGuidelines(CropImageView.Guidelines.ON)
.setAspectRatio(1,1)
.start(this);
}
if (requestCode==CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE)
{
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if(resultCode == RESULT_OK)
{
loadingBar.setTitle("Profile Image");
loadingBar.setMessage("Please wait, while we are uploading image...");
loadingBar.setCanceledOnTouchOutside(true);
loadingBar.show();
Uri resultUri = result.getUri();
final StorageReference filePath = UserProfileImageRef.child(currentUserID + ".jpg");
filePath.putFile(resultUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
filePath.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
final String downloadUrl = uri.toString();
}
});
UserProfileRef.child("profile").child("imageURL").setValue(downloadUrl)
.addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task)
{
if(task.isSuccessful())
{
Intent selfIntent = new Intent(ProfileActivity.this, ProfileActivity.class);
startActivity(selfIntent);
Toast.makeText(ProfileActivity.this, "Profile image stored to firebase database successfully.", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
else
{
String message = task.getException().getMessage();
Toast.makeText(ProfileActivity.this, "Error Occured..." + message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
});
}
else
{
Toast.makeText(this, "Error Occured: Image can't be cropped, try again..", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
}
答案 0 :(得分：0)
调用<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id='vrview'>
<iframe src="https://storage.googleapis.com/vrview/2.0/embed?image=beach.jpeg&is_stereo=false">
</iframe>
</div>
<script>
window.addEventListener('load', onVrViewLoad);
function onVrViewLoad() {
// Selector '#vrview' finds element with id 'vrview'.
var vrView = new VRView.Player('#vrview', {
image: 'beach.jpeg',
is_stereo: false
});
}
</script>
<script src="https://storage.googleapis.com/vrview/2.0/build/vrview.min.js"></script>
</body>
</html>返回一个getDownloadUrl()，该异步地从服务器获取下载URL。检索下载URL后，它将调用Task / onComplete。这意味着下载URL值仅在onSuccess / onComplete方法内可用。需要下载URL的所有代码都必须位于onSuccess / onComplete内。
类似这样：
onSuccess