/
UploadActivity.java
95 lines (79 loc) · 3.46 KB
/
UploadActivity.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
package com.google.firebase.referencecode.storage;
import android.net.Uri;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.OnProgressListener;
import com.google.firebase.storage.StorageMetadata;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import java.util.List;
public class UploadActivity extends AppCompatActivity {
private StorageReference mStorageRef; //mStorageRef was previously used to transfer data.
private boolean mSaved;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_upload);
}
// [START storage_upload_lifecycle]
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
// If there's an upload in progress, save the reference so you can query it later
if (mStorageRef != null) {
outState.putString("reference", mStorageRef.toString());
}
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
// If there was an upload in progress, get its reference and create a new StorageReference
final String stringRef = savedInstanceState.getString("reference");
if (stringRef == null) {
return;
}
mStorageRef = FirebaseStorage.getInstance().getReferenceFromUrl(stringRef);
// Find all UploadTasks under this StorageReference (in this example, there should be one)
List<UploadTask> tasks = mStorageRef.getActiveUploadTasks();
if (tasks.size() > 0) {
// Get the task monitoring the upload
UploadTask task = tasks.get(0);
// Add new listeners to the task using an Activity scope
task.addOnSuccessListener(this, new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot state) {
// Success!
// ...
}
});
}
}
// [END storage_upload_lifecycle]
public void continueAcrossRestarts() {
Uri localFile = null;
Uri sessionUri = null;
UploadTask uploadTask;
// [START save_before_restart]
uploadTask = mStorageRef.putFile(localFile);
uploadTask.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
@Override
public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
Uri sessionUri = taskSnapshot.getUploadSessionUri();
if (sessionUri != null && !mSaved) {
mSaved = true;
// A persisted session has begun with the server.
// Save this to persistent storage in case the process dies.
}
}
});
// [END save_before_restart]
// [START restore_after_restart]
//resume the upload task from where it left off when the process died.
//to do this, pass the sessionUri as the last parameter
uploadTask = mStorageRef.putFile(localFile,
new StorageMetadata.Builder().build(), sessionUri);
// [END restore_after_restart]
}
}