Android: file upload background service

docs-android/app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <application
         android:name=".MainApplication"
@@ -45,6 +46,14 @@
         <provider android:name=".provider.RecentSuggestionsProvider"
             android:exported="false"
             android:authorities="com.sismics.docs.provider.RecentSuggestionsProvider" />
+        <service
+            android:name=".service.FileUploadService"
+            android:enabled="true"
+            android:exported="false" >
+            <intent-filter>
+                <action android:name="com.sismics.docs.file.upload"/>
+            </intent-filter>
+        </service>
     </application>
 
 </manifest>

docs-android/app/src/main/java/com/sismics/docs/activity/DocumentViewActivity.java

@@ -33,7 +33,7 @@ import com.sismics.docs.listener.JsonHttpResponseHandler;
 import com.sismics.docs.model.application.ApplicationContext;
 import com.sismics.docs.resource.DocumentResource;
 import com.sismics.docs.resource.FileResource;
-import com.sismics.docs.util.DialogUtil;
+import com.sismics.docs.service.FileUploadService;
 import com.sismics.docs.util.PreferenceUtil;
 import com.sismics.docs.util.TagUtil;
 
@@ -224,7 +224,8 @@ public class DocumentViewActivity extends ActionBarActivity {
             case R.id.upload_file:
                 Intent intent = new Intent(Intent.ACTION_GET_CONTENT)
                         .setType("*/*")
-                    .putExtra("android.intent.extra.ALLOW_MULTIPLE", true);
+                        .putExtra("android.intent.extra.ALLOW_MULTIPLE", true)
+                        .addCategory(Intent.CATEGORY_OPENABLE);
                 startActivityForResult(Intent.createChooser(intent, getText(R.string.upload_from)), REQUEST_CODE_ADD_FILE);
                 return true;
 
@@ -317,7 +318,7 @@ public class DocumentViewActivity extends ActionBarActivity {
                         // Show a progress dialog while deleting
                         final ProgressDialog progressDialog = ProgressDialog.show(DocumentViewActivity.this,
                                 getString(R.string.document_editing_title),
-                                getString(R.string.document_editing_message), true, true,
+                                getString(R.string.document_deleting_message), true, true,
                                 new DialogInterface.OnCancelListener() {
                                     @Override
                                     public void onCancel(DialogInterface dialog) {
@@ -389,6 +390,15 @@ public class DocumentViewActivity extends ActionBarActivity {
         }
     }
 
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (requestCode == REQUEST_CODE_ADD_FILE && resultCode == RESULT_OK) {
+            Intent intent = new Intent(this, FileUploadService.class)
+                    .putExtra(FileUploadService.PARAM_URI, data.getData());
+            startService(intent);
+        }
+    }
+
     @Override
     protected void onDestroy() {
         EventBus.getDefault().unregister(this);

docs-android/app/src/main/java/com/sismics/docs/service/FileUploadService.java

@@ -0,0 +1,139 @@
+package com.sismics.docs.service;
+
+import android.app.IntentService;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.PowerManager;
+import android.support.v4.app.NotificationCompat;
+import android.support.v4.app.NotificationCompat.Builder;
+import android.util.Log;
+
+import com.sismics.docs.R;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Service to upload a file to a document in the background.
+ *
+ * @author bgamard
+ */
+public class FileUploadService extends IntentService {
+    private static final String TAG = "FileUploadService";
+
+    private static final int UPLOAD_NOTIFICATION_ID = 1;
+    private static final int UPLOAD_NOTIFICATION_ID_DONE = 2;
+    public static final String PARAM_URI = "uri";
+
+    private NotificationManager notificationManager;
+    private Builder notification;
+    private PowerManager.WakeLock wakeLock;
+
+    public FileUploadService() {
+        super(FileUploadService.class.getName());
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
+        notification = new NotificationCompat.Builder(this);
+        PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
+        wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
+    }
+
+    @Override
+    protected void onHandleIntent(Intent intent) {
+        if (intent == null) {
+            return;
+        }
+
+        wakeLock.acquire();
+        try {
+            onStart();
+            handleFileUpload((Uri) intent.getParcelableExtra(PARAM_URI));
+        } catch (Exception e) {
+            Log.e(TAG, "Error uploading the file", e);
+            onError();
+        } finally {
+            wakeLock.release();
+        }
+    }
+
+    /**
+     * Actually uploading the file.
+     *
+     * @param uri Data URI
+     * @throws IOException
+     */
+    private void handleFileUpload(final Uri uri) throws IOException {
+        InputStream is = null;
+        try {
+            is = getContentResolver().openInputStream(uri);
+        } finally {
+            if (is != null) {
+                try {
+                    is.close();
+                } catch (IOException e) {
+                    // Ignore
+                }
+            }
+        }
+
+        onComplete();
+    }
+
+    /**
+     * On upload start.
+     */
+    private void onStart() {
+        notification.setContentTitle(getString(R.string.upload_notification_title))
+                .setContentText(getString(R.string.upload_notification_message))
+                .setContentIntent(PendingIntent.getBroadcast(this, 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT))
+                .setSmallIcon(R.drawable.ic_launcher)
+                .setProgress(100, 0, true)
+                .setOngoing(true);
+
+        startForeground(UPLOAD_NOTIFICATION_ID, notification.build());
+    }
+
+    /**
+     * On upload progress.
+     *
+     * @param progress Progression (100 based)
+     */
+    private void onProgress(final int progress) {
+        notification.setContentTitle(getString(R.string.upload_notification_title))
+                .setContentText(getString(R.string.upload_notification_message))
+                .setSmallIcon(R.drawable.ic_launcher)
+                .setProgress(100, progress, false)
+                .setOngoing(true);
+
+        startForeground(UPLOAD_NOTIFICATION_ID, notification.build());
+    }
+
+    /**
+     * On upload complete.
+     */
+    private void onComplete() {
+        stopForeground(true);
+    }
+
+    /**
+     * On upload error.
+     */
+    private void onError() {
+        stopForeground(false);
+
+        notification.setContentTitle(getString(R.string.upload_notification_title))
+                .setContentText(getString(R.string.upload_notification_error))
+                .setSmallIcon(R.drawable.ic_launcher)
+                .setProgress(0, 0, false)
+                .setOngoing(false);
+
+        notificationManager.notify(UPLOAD_NOTIFICATION_ID_DONE, notification.build());
+    }
+}

docs-android/app/src/main/res/values/strings.xml

@@ -83,6 +83,12 @@
     <string name="delete_document_title">Delete document</string>
     <string name="delete_document_message">Really delete this document and all associated files?</string>
     <string name="document_delete_failure">Network error while deleting this document</string>
+    <string name="document_deleting_message">Deleting document</string>
+    <string name="error_reading_file">Error while reading the file</string>
+    <string name="upload_notification_title">Adding a file</string>
+    <string name="upload_notification_message">Uploading the new file to the document</string>
+    <string name="upload_notification_completed">File upload completed</string>
+    <string name="upload_notification_error">Error uploading the new file</string>
 
 
 </resources>