Fixing issue where screenshot notification remains non-dismissible.

am: 44dbe294fb

* commit '44dbe294fbf06a1def61c48e758621e61ce23b08':
  Fixing issue where screenshot notification remains non-dismissible.

packages/SystemUI/AndroidManifest.xml

@@ -187,6 +187,15 @@
             android:process=":screenshot"
             android:exported="false" />
 
+        <!-- Called from PhoneWindowManager -->
+        <receiver android:name=".screenshot.ScreenshotServiceErrorReceiver"
+            android:process=":screenshot"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.android.systemui.screenshot.SHOW_ERROR" />
+            </intent-filter>
+        </receiver>
+
         <service android:name=".LoadAverageService"
                 android:exported="true" />
 

packages/SystemUI/res/values/strings.xml

@@ -185,7 +185,9 @@
     <string name="screenshot_saved_text">Touch to view your screenshot.</string>
     <!-- Notification title displayed when we fail to take a screenshot. [CHAR LIMIT=50] -->
     <string name="screenshot_failed_title">Couldn\'t capture screenshot.</string>
-    <!-- Notification text displayed when we fail to take a screenshot. [CHAR LIMIT=100] -->
+    <!-- Notification text displayed when we fail to save a screenshot for unknown reasons. [CHAR LIMIT=100] -->
+    <string name="screenshot_failed_to_save_unknown_text">Problem encountered while saving screenshot.</string>
+    <!-- Notification text displayed when we fail to save a screenshot. [CHAR LIMIT=100] -->
     <string name="screenshot_failed_to_save_text">Can\'t save screenshot due to limited storage space.</string>
     <!-- Notification text displayed when we fail to take a screenshot. [CHAR LIMIT=100] -->
     <string name="screenshot_failed_to_capture_text">Taking screenshots is not allowed by the app or your organization.</string>

packages/SystemUI/src/com/android/systemui/screenshot/ScreenshotServiceErrorReceiver.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.screenshot;
+
+import android.app.NotificationManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+import com.android.systemui.R;
+
+/**
+ * Performs a number of miscellaneous, non-system-critical actions
+ * after the system has finished booting.
+ */
+public class ScreenshotServiceErrorReceiver extends BroadcastReceiver {
+
+    @Override
+    public void onReceive(final Context context, Intent intent) {
+        // Show a message that we've failed to save the image to disk
+        NotificationManager nm = (NotificationManager)
+                context.getSystemService(Context.NOTIFICATION_SERVICE);
+        GlobalScreenshot.notifyScreenshotError(context, nm,
+                R.string.screenshot_failed_to_save_unknown_text);
+    }
+}

services/core/java/com/android/server/policy/PhoneWindowManager.java

@@ -251,6 +251,12 @@ public class PhoneWindowManager implements WindowManagerPolicy {
     // app shows again. If that doesn't happen for 30s we drop the gesture.
     private static final long PANIC_GESTURE_EXPIRATION = 30000;
 
+    private static final String SYSUI_PACKAGE = "com.android.systemui";
+    private static final String SYSUI_SCREENSHOT_SERVICE =
+            "com.android.systemui.screenshot.TakeScreenshotService";
+    private static final String SYSUI_SCREENSHOT_ERROR_RECEIVER =
+            "com.android.systemui.screenshot.ScreenshotServiceErrorReceiver";
+
     /**
      * Keyguard stuff
      */
@@ -5186,6 +5192,7 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                 if (mScreenshotConnection != null) {
                     mContext.unbindService(mScreenshotConnection);
                     mScreenshotConnection = null;
+                    notifyScreenshotError();
                 }
             }
         }
@@ -5197,10 +5204,10 @@ public class PhoneWindowManager implements WindowManagerPolicy {
             if (mScreenshotConnection != null) {
                 return;
             }
-            ComponentName cn = new ComponentName("com.android.systemui",
-                    "com.android.systemui.screenshot.TakeScreenshotService");
-            Intent intent = new Intent();
-            intent.setComponent(cn);
+            final ComponentName serviceComponent = new ComponentName(SYSUI_PACKAGE,
+                    SYSUI_SCREENSHOT_SERVICE);
+            final Intent serviceIntent = new Intent();
+            serviceIntent.setComponent(serviceComponent);
             ServiceConnection conn = new ServiceConnection() {
                 @Override
                 public void onServiceConnected(ComponentName name, IBinder service) {
@@ -5235,17 +5242,35 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                         }
                     }
                 }
+
                 @Override
-                public void onServiceDisconnected(ComponentName name) {}
+                public void onServiceDisconnected(ComponentName name) {
+                    notifyScreenshotError();
+                }
             };
-            if (mContext.bindServiceAsUser(
-                    intent, conn, Context.BIND_AUTO_CREATE, UserHandle.CURRENT)) {
+            if (mContext.bindServiceAsUser(serviceIntent, conn,
+                    Context.BIND_AUTO_CREATE | Context.BIND_FOREGROUND_SERVICE_WHILE_AWAKE,
+                    UserHandle.CURRENT)) {
                 mScreenshotConnection = conn;
                 mHandler.postDelayed(mScreenshotTimeout, 10000);
             }
         }
     }
 
+    /**
+     * Notifies the screenshot service to show an error.
+     */
+    private void notifyScreenshotError() {
+        // If the service process is killed, then ask it to clean up after itself
+        final ComponentName errorComponent = new ComponentName(SYSUI_PACKAGE,
+                SYSUI_SCREENSHOT_ERROR_RECEIVER);
+        Intent errorIntent = new Intent();
+        errorIntent.setComponent(errorComponent);
+        errorIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT |
+                Intent.FLAG_RECEIVER_FOREGROUND);
+        mContext.sendBroadcastAsUser(errorIntent, UserHandle.ALL);
+    }
+
     /** {@inheritDoc} */
     @Override
     public int interceptKeyBeforeQueueing(KeyEvent event, int policyFlags) {