Handle more config changes and handle onDestroy

- The PrintActivity has to handle all config changes to not loose track
  close the connection to the printing app
- In the case where onDestroy is called we need to make sure to
  - not do any more UI operation
  - on async calls after destroy is already called, handle failure to
    unbind services.

Change-Id: If21335543fbfa16ecfe77d1965b2e8a13dfa14b8

packages/PrintSpooler/AndroidManifest.xml

@@ -57,7 +57,7 @@
 
         <activity
             android:name=".ui.PrintActivity"
-            android:configChanges="screenSize|smallestScreenSize|orientation|locale|keyboard|keyboardHidden|fontScale|uiMode|layoutDirection"
+            android:configChanges="mnc|mnc|touchscreen|navigation|screenLayout|screenSize|smallestScreenSize|orientation|locale|keyboard|keyboardHidden|fontScale|uiMode|layoutDirection|density"
             android:permission="android.permission.BIND_PRINT_SPOOLER_SERVICE"
             android:theme="@style/Theme.PrintActivity">
             <intent-filter>

packages/PrintSpooler/src/com/android/printspooler/model/PageContentRepository.java

@@ -510,7 +510,12 @@ public final class PageContentRepository {
         public void destroy() {
             if (mBoundToService) {
                 mBoundToService = false;
-                mContext.unbindService(AsyncRenderer.this);
+                try {
+                    mContext.unbindService(AsyncRenderer.this);
+                } catch (IllegalArgumentException e) {
+                    // Service might have been forcefully unbound in onDestroy()
+                    Log.e(LOG_TAG, "Cannot unbind service", e);
+                }
             }
 
             mPageContentCache.invalidate();

packages/PrintSpooler/src/com/android/printspooler/ui/PrintActivity.java

@@ -268,7 +268,7 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
                 new Runnable() {
             @Override
             public void run() {
-                if (isFinishing()) {
+                if (isFinishing() || isDestroyed()) {
                     // onPause might have not been able to cancel the job, see PrintActivity#onPause
                     // To be sure, cancel the job again. Double canceling does no harm.
                     mSpoolerProvider.getSpooler().setPrintJobState(mPrintJob.getId(),
@@ -324,7 +324,8 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
 
                 // If we are finishing or we are in a state that we do not need any
                 // data from the printing app, then no need to finish.
-                if (isFinishing() || (isFinalState(mState) && !mPrintedDocument.isUpdating())) {
+                if (isFinishing() || isDestroyed() ||
+                        (isFinalState(mState) && !mPrintedDocument.isUpdating())) {
                     return;
                 }
                 setState(STATE_PRINT_CANCELED);
@@ -621,6 +622,17 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
         }
     }
 
+    @Override
+    protected void onDestroy() {
+        if (mPrintedDocument != null) {
+            mPrintedDocument.cancel(true);
+        }
+
+        doFinish();
+
+        super.onDestroy();
+    }
+
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         switch (requestCode) {
@@ -964,7 +976,7 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
     }
 
     private void ensureProgressUiShown() {
-        if (isFinishing()) {
+        if (isFinishing() || isDestroyed()) {
             return;
         }
         if (mUiState != UI_STATE_PROGRESS) {
@@ -976,7 +988,7 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
     }
 
     private void ensurePreviewUiShown() {
-        if (isFinishing()) {
+        if (isFinishing() || isDestroyed()) {
             return;
         }
         if (mUiState != UI_STATE_PREVIEW) {
@@ -987,7 +999,7 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
     }
 
     private void ensureErrorUiShown(CharSequence message, int action) {
-        if (isFinishing()) {
+        if (isFinishing() || isDestroyed()) {
             return;
         }
         if (mUiState != UI_STATE_ERROR) {
@@ -1353,7 +1365,7 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
 
     @Override
     public void onLoaderReset(Loader<List<PrintServiceInfo>> loader) {
-        if (!isFinishing()) {
+        if (!(isFinishing() || isDestroyed())) {
             onLoadFinished(loader, null);
         }
     }
@@ -2036,7 +2048,9 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
             mSpoolerProvider.destroy();
         }
 
-        setState(mProgressMessageController.cancel());
+        if (mProgressMessageController != null) {
+            setState(mProgressMessageController.cancel());
+        }
 
         if (mState != STATE_INITIALIZING) {
             mPrintedDocument.finish();