如何将多个图像添加到firebase数据库
如何将多个图像添加到Firebase实时数据库中
How can I add multiple images into Firebase Realtime Database
private void uploadProductToFirebase() {
final StorageReference imageFilePath = ProductImagesRef;
for (int uploadCount = 0; uploadCount<ImageList.size(); uploadCount++){
Uri IndividualImage= ImageList.get(uploadCount);
final StorageReference ImageName = imageFilePath.child(pname);
final int finalUploadCount = uploadCount;
ImageName.putFile(IndividualImage).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
ImageName.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
String url = String.valueOf(uri);
DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("ProductImages").child(productkey);
Product product = new Product();
if (finalUploadCount == 0){
product.setImage1(url);
}
else if (finalUploadCount == 1){
product.setImage2(url);
}
else if (finalUploadCount == 2){
product.setImage3(url);
}
databaseReference.setValue(product);
}
});
}
});
}
}
如果我添加这三个图像，则只有第三个图像存储到数据库中.
If i add these three images only the 3rd image is stored into database.
要能够将3张图片上传到Firebase存储和Firebase实时数据库，我应该做些什么?
What should I change to be able to upload 3 images to the Firebase Storage and Firebase RealTime Database?
建议
我将测试以下代码，以查看问题是否出在您的Product类上.
Suggestion
I would test the following code to see if the problem is with your Product class.
String url = String.valueOf(uri);
DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference("ProductImages").child("1234");
Product product = new Product();
if (finalUploadCount == 0){
databaseReference.child("image_1").setValue(url);
}
else if (finalUploadCount == 1){
databaseReference.child("image_2").setValue(url);
}
else if (finalUploadCount == 2){
databaseReference.child("image_3").setValue(url);
}
您可能只保存了最后的Firebase存储.检查Firebase存储是否正在创建映像，如果是的话，这可能是在线上的问题:
Your might be only saving the last Firebase Storage. Check the Firebase Storage is creating the image, if it is this might be a problem on the line:
databaseReference.setValue(product);
此外，还有一个我在Kotlin中实现的工作示例.
Also, there is a working example that I implemented in Kotlin.
它从用户库中获取一些图像，然后上传到Firebase存储中，之后将Firebase存储参考存储到我的实时数据库中.
It gets some image from the user gallery and upload to Firebase Storage, after that it stores the Firebase Storage Reference to my Realtime Database.
因此，我的建议是让您尝试使用Bitmap，然后执行将其上传到Firebase Storage的任务.您可能会考虑在上传之前压缩图像，以不占用您的所有存储空间(如果不这样做可能会变得昂贵)
So my advice is for you to try to work with Bitmap, then do a task for upload it to Firebase Storage. You might consider to compress your image before uploading to not consume all your storage space (It might get expensive if you don't do that)
private fun handleImageUpload() {
val filePath : StorageReference = FirebaseStorage.getInstance().reference.child("user_image").child(mAuth.currentUser!!.uid)
var bitmap: Bitmap? = null
try {
bitmap = MediaStore.Images.Media.getBitmap(application.contentResolver, resultUri)
} catch (e : IOException) {
e.printStackTrace()
}
val boas = ByteArrayOutputStream()
bitmap!!.compress(Bitmap.CompressFormat.JPEG, 20, boas)
val data = boas.toByteArray()
val uploadTask = filePath.putBytes(data)
uploadTask.continueWithTask { task ->
if (!task.isSuccessful) {
task.exception?.let {
throw it
}
}
filePath.downloadUrl
}.addOnCompleteListener { task ->
if (task.isSuccessful) {
val downloadUri = task.result
val newImage = HashMap<String, Any>()
newImage.put("profileImageUrl", downloadUri.toString())
mCustomerDatabase.updateChildren(newImage)
} else {
// Handle failures
// ...
}
}
}