Method init

app/src/main/java/eu/faircode/email/ContactInfo.java:1031–1077

(final Context context)

    }

    static void init(final Context context) {
        if (Helper.hasPermission(context, Manifest.permission.READ_CONTACTS)) {
            ContentObserver observer = new ContentObserver(ApplicationEx.getMainHandler()) {
                @Override
                public void onChange(boolean selfChange, Uri uri) {
                    EntityLog.log(context, EntityLog.Type.Notification, "Contact changed uri=" + uri);
                    Helper.getSerialExecutor().submit(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                emailLookup = getEmailLookup(context);
                            } catch (Throwable ex) {
                                Log.e(ex);
                            }
                        }
                    });
                }
            };

            Helper.getSerialExecutor().submit(new Runnable() {
                @Override
                public void run() {
                    try {
                        emailLookup = getEmailLookup(context);
                    } catch (Throwable ex) {
                        Log.e(ex);
                    }
                }
            });

            try {
                Uri uri = ContactsContract.CommonDataKinds.Email.CONTENT_URI;
                EntityLog.log(context, EntityLog.Type.Notification, "Observing uri=" + uri);
                context.getContentResolver().registerContentObserver(uri, true, observer);
            } catch (SecurityException ex) {
                Log.w(ex);
                /*
                    Should never happen, but:
                    Caused by: android.os.RemoteException:
                      at com.android.server.content.ContentService.registerContentObserver (ContentService.java:340)
                      at android.content.IContentService$Stub.onTransact (IContentService.java:76)
                      at com.android.server.content.ContentService.onTransact (ContentService.java:262)
                      at android.os.Binder.execTransact (Binder.java:731)
                 */
            }
        }
    }

    static String getKey(String email) {
        // Maximum file name length: 255