Init PhoneNumberFormattingTextWatcher on background thread.

A strict violation was being caused by calling this on the main thread:

android.telephony.PhoneNumberFormattingTextWatcher.<init>(PhoneNumberFormattingTextWatcher.java:71)

We now initialize the watcher on a background thread and pass it back to the main thread to be attached to the textview.

Behavior before: Dialpad fragment would fail to appear until libphonenumber finished (verified by adding sleep and observing)

Behavior after: Dialpad fragment loads immediately, but formatting is not enabled until libphonenumber finishes reading metadata. When adding sleeps, I could type "4084" before init finished and it would remain unformatted. When init finished I could type another character like "6" and the text view would be correctly updated to "408-46".

Bug: 64716944
Test: manual
PiperOrigin-RevId: 165480191
Change-Id: Ie1136a5a0e0b7ed66d4882e96c5830ca1e7523f0

1 files changed, 33 insertions, 3 deletions

diff --git a/java/com/android/dialer/app/dialpad/DialpadFragment.java b/java/com/android/dialer/app/dialpad/DialpadFragment.java
index 3cd3ac27c..d58caa50a 100644
--- a/java/com/android/dialer/app/dialpad/DialpadFragment.java
+++ b/java/com/android/dialer/app/dialpad/DialpadFragment.java
@@ -42,6 +42,7 @@ import android.provider.Contacts.People;
 import android.provider.Contacts.Phones;
 import android.provider.Contacts.PhonesColumns;
 import android.provider.Settings;
+import android.support.annotation.Nullable;
 import android.support.annotation.VisibleForTesting;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v4.content.ContextCompat;
@@ -82,6 +83,9 @@ import com.android.dialer.callintent.CallInitiationType;
 import com.android.dialer.callintent.CallIntentBuilder;
 import com.android.dialer.calllogutils.PhoneAccountUtils;
 import com.android.dialer.common.LogUtil;
+import com.android.dialer.common.concurrent.DialerExecutor;
+import com.android.dialer.common.concurrent.DialerExecutor.Worker;
+import com.android.dialer.common.concurrent.DialerExecutors;
 import com.android.dialer.dialpadview.DialpadKeyButton;
 import com.android.dialer.dialpadview.DialpadView;
 import com.android.dialer.location.GeoUtil;
@@ -178,6 +182,8 @@ public class DialpadFragment extends Fragment
   private boolean mFirstLaunch = false;
   private boolean mAnimate = false;
 
+  private DialerExecutor<String> initPhoneNumberFormattingTextWatcherExecutor;
+
   /**
    * Determines whether an add call operation is requested.
    *
@@ -346,6 +352,14 @@ public class DialpadFragment extends Fragment
       mCallStateReceiver = new CallStateReceiver();
       getActivity().registerReceiver(mCallStateReceiver, callStateIntentFilter);
     }
+
+    initPhoneNumberFormattingTextWatcherExecutor =
+        DialerExecutors.createUiTaskBuilder(
+                getFragmentManager(),
+                "DialpadFragment.initPhoneNumberFormattingTextWatcher",
+                new InitPhoneNumberFormattingTextWatcherWorker())
+            .onSuccess(watcher -> mDialpadView.getDigits().addTextChangedListener(watcher))
+            .build();
     Trace.endSection();
   }
 
@@ -371,9 +385,8 @@ public class DialpadFragment extends Fragment
     mDigits.addTextChangedListener(this);
     mDigits.setElegantTextHeight(false);
 
-    PhoneNumberFormattingTextWatcher watcher =
-        new PhoneNumberFormattingTextWatcher(GeoUtil.getCurrentCountryIso(getActivity()));
-    mDigits.addTextChangedListener(watcher);
+    initPhoneNumberFormattingTextWatcherExecutor.executeSerial(
+        GeoUtil.getCurrentCountryIso(getActivity()));
 
     // Check for the presence of the keypad
     View oneButton = fragmentView.findViewById(R.id.one);
@@ -1707,4 +1720,21 @@ public class DialpadFragment extends Fragment
       }
     }
   }
+
+  /**
+   * Input: the ISO 3166-1 two letters country code of the country the user is in
+   *
+   * <p>Output: PhoneNumberFormattingTextWatcher. Note: It is unusual to return a non-data value
+   * from a worker, but it is a limitation in libphonenumber API that the watcher cannot be
+   * initialized on the main thread.
+   */
+  private static class InitPhoneNumberFormattingTextWatcherWorker
+      implements Worker<String, PhoneNumberFormattingTextWatcher> {
+
+    @Nullable
+    @Override
+    public PhoneNumberFormattingTextWatcher doInBackground(@Nullable String countryCode) {
+      return new PhoneNumberFormattingTextWatcher(countryCode);
+    }
+  }
 }