Merge "BT device picker: don't rescan after rotating the device"

src/com/android/settings/ProgressCategory.java

@@ -45,13 +45,13 @@ public class ProgressCategory extends ProgressCategoryBase {
         textView.setVisibility(noDeviceFound ? View.INVISIBLE : View.VISIBLE);
         progressBar.setVisibility(mProgress ? View.VISIBLE : View.INVISIBLE);
 
-        if (mProgress) {
+        if (mProgress || !noDeviceFound) {
             if (mNoDeviceFoundAdded) {
                 removePreference(mNoDeviceFoundPreference);
                 mNoDeviceFoundAdded = false;
             }
         } else {
-            if (noDeviceFound && !mNoDeviceFoundAdded) {
+            if (!mNoDeviceFoundAdded) {
                 if (mNoDeviceFoundPreference == null) {
                     mNoDeviceFoundPreference = new Preference(getContext());
                     mNoDeviceFoundPreference.setLayoutResource(R.layout.preference_empty_list);
@@ -70,4 +70,3 @@ public class ProgressCategory extends ProgressCategoryBase {
         notifyChanged();
     }
 }
-

src/com/android/settings/bluetooth/DevicePickerFragment.java

@@ -33,6 +33,7 @@ public final class DevicePickerFragment extends DeviceListPreferenceFragment {
     private boolean mNeedAuth;
     private String mLaunchPackage;
     private String mLaunchClass;
+    private boolean mStartScanOnResume;
 
     @Override
     void addPreferencesForActivity() {
@@ -50,13 +51,17 @@ public final class DevicePickerFragment extends DeviceListPreferenceFragment {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         getActivity().setTitle(getString(R.string.device_picker));
+        mStartScanOnResume = (savedInstanceState == null);  // don't start scan after rotation
     }
 
     @Override
     public void onResume() {
         super.onResume();
         addCachedDevices();
-        mLocalAdapter.startScanning(true);
+        if (mStartScanOnResume) {
+            mLocalAdapter.startScanning(true);
+            mStartScanOnResume = false;
+        }
     }
 
     @Override