[英]How can i achieve this by RxJava2 in android?
I am trying to upload images to Firebase Storage and i wanna achieve this thing by RxJava2. 我正在尝试将图像上传到Firebase Storage,并且想通过RxJava2实现此功能。 Here is my code..
这是我的代码。
public override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) {
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
val result = CropImage.getActivityResult(data)
if (resultCode == Activity.RESULT_OK) {
val resultUri = result.uri
var actualImageFile = File(resultUri.path)
dialogs = SpotsDialog(this, "upload")
imageCompressor = Compressor(this)
var image_bitmap = imageCompressor
?.setMaxWidth(200)
?.setMaxHeight(200)
?.setQuality(75)
?.compressToBitmap(actualImageFile)
profile_image?.setImageBitmap(image_bitmap)
dialogs?.show()
try{
FirebaseStorage.getInstance().reference.child("profile_images").child(FirebaseAuth.getInstance().currentUser?.uid + ".jpg").putFile(resultUri)
.addOnCompleteListener { task: Task<UploadTask.TaskSnapshot> ->
if (task.isSuccessful) {
showMessage("image uploaded")
val baos = ByteArrayOutputStream()
image_bitmap?.compress(Bitmap.CompressFormat.JPEG, 100, baos)
FirebaseStorage.getInstance().reference.child("profile_images").child("thumbs_images").child(FirebaseAuth.getInstance().currentUser?.uid + ".jpg").putBytes(baos.toByteArray())
.addOnCompleteListener { t ->
if (t.isSuccessful) {
dialogs?.dismiss()
showMessage("thumbnail uploaded")
} else {
dialogs?.dismiss()
showMessage("thumbnail error")
}
}
} else {
showMessage("image error")
dialogs?.dismiss()
}
}
}catch(es : Exception){
es.printStackTrace()
}
}else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
val error = result.error
}
}
}
I wanna do the same by RxJava2 but I'm not getting how to do it.. Please tell me . 我想通过RxJava2做同样的事情,但是我不知道该怎么做。 Thanks in advance
提前致谢
You don't need to use any libraries to this process, this is how I would do it if you just needed to wrap the calls to Firebase into RxJava calls: 您不需要在此过程中使用任何库,如果您只需要将对Firebase的调用包装到RxJava调用中,这就是我要这样做的方式:
This is your first outer call that you make to upload the file 这是您上传文件的第一个外部调用
fun firebaseFileUploader(uri: Uri) : Single<String> {
return Single.create{ subscriber ->
FirebaseStorage.getInstance()
.reference
.child("profile_images")
.child("${FirebaseAuth.getInstance().currentUser?.uid}.jpg")
.putFile(uri)
.addOnCompleteListener {
if(it.isSuccessful) {
if(!subscriber.isDisposed) {
subscriber.onSuccess("Image uploaded")
}
} else {
subscriber.onError(Throwable("Error uploading file to firebase, Image Error"))
}
}
}
This is your second call to upload the thumbnail 这是您第二次上传缩略图
fun firebaseBytesUploader(baos: ByteArrayOutputStream) : Single<String> {
return Single.create { subscriber ->
FirebaseStorage.getInstance()
.reference
.child("profile_images")
.child("thumbs_images")
.child("${FirebaseAuth.getInstance().currentUser?.uid}.jpg")
.putBytes(baos.toByteArray())
.addOnCompleteListener {
if(it.isSuccessful) {
if(!subscriber.isDisposed) {
subscriber.onSuccess("Thumbnail uploaded")
}
} else {
subscriber.onError(Throwable("Error uploading thumbnail"))
}
}
}
This is the method to start the process, it returns you a disposable so you can dispose of this stream in case your activity gets destroyed, etc. 这是启动该过程的方法,它返回给您一次性的东西,这样您就可以处理此流,以防您的活动被破坏等。
fun startuploadRx(uri: Uri, baos: ByteArrayOutputStream) : Disposable {
return firebaseFileUploader(uri)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.flatMap {
firebaseBytesUploader(baos).subscribeOn(Schedulers.io())
}
.doOnSubscribe {
//show loading dialog
}
.doAfterTerminate {
//dismiss loading dialog
}
.subscribe({successMessage ->
//do something with the success message
}, {
//do something with the error message
})
Again this is just an example, it's not perfect, but a good place to start. 同样,这只是一个例子,它不是完美的,而是一个很好的起点。 Hope it helps!
希望能帮助到你!
RxFirebaseStorage.putFile(
FirebaseStorage.getInstance().reference.child("profile_images")
.child(FirebaseAuth.getInstance().currentUser?.uid + ".jpg"), resultUri
)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe({
showMessage("image uploaded")
val baos = ByteArrayOutputStream()
image_bitmap?.compress(Bitmap.CompressFormat.JPEG, 100, baos)
RxFirebaseStorage.putBytes(
FirebaseStorage.getInstance().reference.child("profile_images")
.child("thumbs_images")
.child(FirebaseAuth.getInstance().currentUser?.uid + ".jpg"),
baos.toByteArray()
)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(
{
dialogs?.dismiss()
showMessage("thumbnail uploaded")
}, {
dialogs?.dismiss()
showMessage("thumbnail error")
}
)
}, {
showMessage("image error")
dialogs?.dismiss()
})
You might have to adapt this to your project but you got the idea. 您可能需要对此进行调整以适应您的项目,但是您明白了。
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