Skip to content

Commit 3503cf5

Browse files
maciej-nowakmaciej-nowak
committed
firebase code updated
1 parent 9941048 commit 3503cf5

File tree

4 files changed

+85
-67
lines changed

4 files changed

+85
-67
lines changed

‎_drafts/2019-04-01-cloud_storage.md‎

Lines changed: 61 additions & 54 deletions
Original file line numberDiff line numberDiff line change
@@ -54,7 +54,6 @@ Wszystkie operacje na plikach, tzn. wysyłanie, pobieranie, usuwanie i zmiana me
5454
{% highlight kotlin %}
5555
private fun startUploadFile() {
5656
//get file and create reference
57-
val storageRef = FirebaseStorage.getInstance().reference
5857
val file = Uri.fromFile(File("path/file.jpg"))
5958
val fileRef = storageRef.child("images/${file.lastPathSegment}")
6059

@@ -67,20 +66,17 @@ private fun startUploadFile() {
6766
}
6867

6968
private fun startDownloadFile() {
70-
val storageRef = FirebaseStorage.getInstance().reference
7169
val file = File.createTempFile("images", "jpg")
7270
val fileRef = storageRef.child("images/file.jpg")
7371
val downloadTask = fileRef.getFile(file)
7472
}
7573

7674
private fun startDeleteFile() {
77-
val storageRef = FirebaseStorage.getInstance().reference
7875
val fileRef = storageRef.child("images/file.jpg")
7976
val deleteTask = fileRef.delete()
8077
}
8178

8279
private fun startUpdateMetadata() {
83-
val storageRef = FirebaseStorage.getInstance().reference
8480
val fileRef = storageRef.child("images/file.jpg")
8581

8682
val metadata = StorageMetadata.Builder()
@@ -96,72 +92,83 @@ private fun startUpdateMetadata() {
9692
Rozpoczęcie wykonywania zadania zwraca właściwy dla danej operacji obiekt rozszerzający klasę `StorageTask`, który pozwala na zarządzanie i monitorowanie statusu operacji poprzez podpięcie słuchaczy dla różnych stanów, tj. `OnProgressListener`, `OnPausedListener`, `OnSuccessListener`, `OnFailureListener`. Metody `pause`, `resume`, `cancel` umożliwiają manualne zarządzanie statusem zadania. W przypadku zamknięcia procesu aplikacji wszystkie zadania są przerywane. Należy więc zadbać o ich właściwe wznowienie w miejscu przerwania (nie od początku) co pozwoli na oszczędzenie czasu i transmisji danych użytkownika.
9793

9894
{% highlight kotlin %}
99-
override fun onCreate(savedInstanceState: Bundle?) {
100-
super.onCreate(savedInstanceState)
101-
setContentView(R.layout.activity_main)
95+
class StatusActivity : AppCompatActivity() {
10296

103-
uploadButton.setOnClickListener { startUploadFileWithListeners() }
104-
cancelButton.setOnClickListener { uploadTask?.cancel() }
97+
private lateinit var storageRef: StorageReference
98+
private lateinit var uploadTask: UploadTask
10599

106-
//check if upload task has been interrupted
107-
val taskInterrupted = false //mock, get from persistent storage
108-
if(taskInterrupted) {
109-
restartUploadFile()
100+
override fun onCreate(savedInstanceState: Bundle?) {
101+
super.onCreate(savedInstanceState)
102+
setContentView(R.layout.activity_status)
103+
104+
storageRef = FirebaseStorage.getInstance().reference
105+
106+
startUploadFileWithListeners()
110107
}
111-
}
112108

113-
private fun startUploadFileWithListeners() {
114-
val storageRef = FirebaseStorage.getInstance().reference
115-
val file = Uri.fromFile(File("path/file.jpg"))
116-
fileRef = storageRef.child("images/${file.lastPathSegment}")
117-
118-
//start and add listeners
119-
uploadTask = fileRef.putFile(file)
120-
uploadTask.addOnProgressListener { taskSnapshot ->
121-
//save session URI in persistent storage in case of process die
122-
val sessionUri = taskSnapshot.uploadSessionUri
123-
//show some progress
124-
}.addOnFailureListener {
125-
//action on error like show message
126-
}.addOnSuccessListener {
127-
//action on success like show file in UI
109+
private fun startUploadFileWithListeners() {
110+
val file = Uri.fromFile(File("path/file.jpg"))
111+
val fileRef = storageRef.child("images/${file.lastPathSegment}")
112+
113+
//start and add listeners
114+
uploadTask = fileRef.putFile(file)
115+
uploadTask.addOnProgressListener { taskSnapshot ->
116+
//save session URI in persistent storage in case of process die
117+
val sessionUri = taskSnapshot.uploadSessionUri
118+
//show some progress
119+
}.addOnFailureListener {
120+
//action on error like show message
121+
}.addOnSuccessListener {
122+
//action on success like show file in UI
123+
}
128124
}
129-
}
130125

131-
private fun restartUploadFile {
132-
val storageRef = FirebaseStorage.getInstance().reference
133-
val file = Uri.fromFile(File("path/file.jpg"))
134-
val sessionUri = Uri.EMPTY //mock value, get from persistent storage
135-
uploadTask = storageRef.putFile(file, StorageMetadata.Builder().build(), sessionUri)
136-
}
126+
private fun restartUploadFile {
127+
val file = Uri.fromFile(File("path/file.jpg"))
128+
val sessionUri = Uri.EMPTY //mock value, get from persistent storage
129+
uploadTask = storageRef.putFile(file, StorageMetadata.Builder().build(), sessionUri)
130+
}
137131

138-
//do in the similar way for other operations
132+
//do in the similar way for other operations
133+
}
139134
{% endhighlight %}
140135

141136
## Cykl życia
142137
Przesyłanie kontynuowane jest w tle niezależnie od zmian cyklu życia `Aktywności` co pomimo niewątpliwej zalety może prowadzić do wycieku pamięci dla dodanych wcześniej obserwatorów. Aby temu zapobiec należy we właściwym miejscu cyklu życia wyrejestrować obiekty słuchaczy, a następnie zarejestrować ponownie pobierając instancje bieżącego zadania za pomocą metody `getActiveUploadTask` lub `getActiveDownloadTask`.
143138

144139
{% highlight kotlin %}
145-
override fun onSaveInstanceState(outState: Bundle) {
146-
super.onSaveInstanceState(outState)
147-
//save the reference to upload task if is in progress
148-
fileRef?.let { outState.putString("reference", it.toString()) }
149-
//remove passed listeners
150-
}
140+
class LifecycleActivity : AppCompatActivity() {
141+
142+
private var fileRef: StorageReference?
143+
144+
override fun onCreate(savedInstanceState: Bundle?) {
145+
super.onCreate(savedInstanceState)
146+
setContentView(R.layout.activity_lifecycle)
147+
148+
//start some upload task on fileRef
149+
}
150+
151+
override fun onSaveInstanceState(outState: Bundle) {
152+
super.onSaveInstanceState(outState)
153+
//save the reference to upload task if is in progress
154+
fileRef?.let { outState.putString("reference", it.toString()) }
155+
//remove passed listeners
156+
}
151157

152-
override fun onRestoreInstanceState(savedInstanceState: Bundle) {
153-
super.onRestoreInstanceState(savedInstanceState)
158+
override fun onRestoreInstanceState(savedInstanceState: Bundle) {
159+
super.onRestoreInstanceState(savedInstanceState)
154160

155-
//get reference to upload task if was in progress
156-
val reference = savedInstanceState.getString("reference")
157-
if(reference != null) {
158-
fileRef = FirebaseStorage.getInstance().getReferenceFromUrl(reference)
161+
//get reference to upload task if was in progress
162+
val reference = savedInstanceState.getString("reference")
163+
if(reference != null) {
164+
fileRef = FirebaseStorage.getInstance().getReferenceFromUrl(reference)
159165

160-
//get all UploadTask - in this case there should be one
161-
fileRef?.activeUploadTasks?.let { it ->
162-
if (it.size > 0) {
163-
val task = it[0]
164-
//set listeners to task here
166+
//get all UploadTask - in this case there should be one
167+
fileRef?.activeUploadTasks?.let { it ->
168+
if (it.size > 0) {
169+
val task = it[0]
170+
//set listeners to task here
171+
}
165172
}
166173
}
167174
}

‎_drafts/2019-04-15-remote_config.md‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -37,7 +37,7 @@ Aby wykorzystać Remote Config w aplikacji należy dodać parametry i warunki w
3737
{% endhighlight %}
3838

3939
{% highlight kotlin %}
40-
fun startRemoteConfig() {
40+
private fun startRemoteConfig() {
4141
//get instance
4242
val remoteConfig = FirebaseRemoteConfig.getInstance()
4343

‎_drafts/2019-04-22-cloud_messaging.md‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -172,7 +172,7 @@ class LauncherActivity : AppCompatActivity() {
172172
setContentView(R.layout.activity_launcher)
173173

174174
//check are some keys from notification exists
175-
if(intent.extras.containsKey("key1")) {
175+
if(intent?.extras.containsKey("key1")) {
176176
//do some action depends on keys value like launch another activity
177177
}
178178
}

‎_drafts/2019-05-06-dynamic_links.md‎

Lines changed: 22 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -67,6 +67,7 @@ Aby odebrać i przetworzyć otrzymany `DynamicLink` należy dodać w `AndroidMan
6767

6868
{% highlight xml %}
6969
<!-- autoVerify flags is responsible for handling Dynamic Links using App Links -->
70+
<!-- add filter to MainActivity -->
7071
<intent-filter android:autoVerify="true">
7172
<action android:name="android.intent.action.VIEW"/>
7273
<category android:name="android.intent.category.DEFAULT"/>
@@ -76,18 +77,28 @@ Aby odebrać i przetworzyć otrzymany `DynamicLink` należy dodać w `AndroidMan
7677
{% endhighlight %}
7778

7879
{% highlight kotlin %}
79-
private fun receiveDynamicLink() {
80-
FirebaseDynamicLinks.getInstance()
81-
.getDynamicLink(intent)
82-
.addOnSuccessListener(this) { pendingDynamicLinkData ->
83-
// Get deep link from result (may be null if no link is found)
84-
var deepLink: Uri? = null
85-
if (pendingDynamicLinkData != null) {
86-
deepLink = pendingDynamicLinkData.link
80+
class MainActivity : AppCompatActivity() {
81+
82+
override fun onCreate(savedInstanceState: Bundle?) {
83+
super.onCreate(savedInstanceState)
84+
setContentView(R.layout.activity_main)
85+
86+
receiveDynamicLink()
87+
}
88+
89+
private fun receiveDynamicLink() {
90+
FirebaseDynamicLinks.getInstance()
91+
.getDynamicLink(intent)
92+
.addOnSuccessListener(this) { pendingDynamicLinkData ->
93+
// Get deep link from result (may be null if no link is found)
94+
var deepLink: Uri? = null
95+
if (pendingDynamicLinkData != null) {
96+
deepLink = pendingDynamicLinkData.link
97+
}
98+
}.addOnFailureListener {
99+
//some action
87100
}
88-
}.addOnFailureListener {
89-
//some action
90-
}
101+
}
91102
}
92103
{% endhighlight %}
93104

0 commit comments

Comments
 (0)