disable emoji fonts on Android 5 (#698)

app/build.gradle

@@ -77,7 +77,7 @@ dependencies {
     // EmojiCompat
     implementation "com.android.support:support-emoji:$supportLibraryVersion"
     implementation "com.android.support:support-emoji-appcompat:$supportLibraryVersion"
-    implementation "de.c1710:filemojicompat:1.0.5"
+    implementation "de.c1710:filemojicompat:1.0.9"
     // architecture components
     implementation 'android.arch.lifecycle:extensions:1.1.1'
     //room

app/src/main/java/com/keylesspalace/tusky/AccountActivity.kt

@@ -299,7 +299,12 @@ class AccountActivity : BottomSheetActivity(), ActionButtonActivity, HasSupportF
             accountUsernameTextView.text = usernameFormatted
             accountDisplayNameTextView.text = CustomEmojiHelper.emojifyString(account.name, account.emojis, accountDisplayNameTextView)
             if (supportActionBar != null) {
-                supportActionBar?.title = EmojiCompat.get().process(account.name)
+                try {
+                    supportActionBar?.title = EmojiCompat.get().process(account.name)
+                } catch (e: IllegalStateException) {
+                    // some Android versions seem to have problems with custom emoji fonts
+                    supportActionBar?.title = account.name
+                }
 
                 val subtitle = String.format(getString(R.string.status_username_format),
                         account.username)

app/src/main/java/com/keylesspalace/tusky/fragment/PreferencesFragment.java

@@ -23,6 +23,7 @@ import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.EditTextPreference;
 import android.preference.Preference;
+import android.preference.PreferenceCategory;
 import android.preference.PreferenceFragment;
 import android.support.annotation.XmlRes;
 import android.text.Editable;
@@ -67,6 +68,12 @@ public class PreferencesFragment extends PreferenceFragment implements SharedPre
 
         addPreferencesFromResource(preference);
 
+        Preference emojiPreference = findPreference("emojiCompat");
+        if(emojiPreference != null && Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            //disable emoji fonts on Android 5 because they cause problems
+            ((PreferenceCategory)findPreference("categoryAppearance")).removePreference(emojiPreference);
+        }
+
         Preference regexPref = findPreference("tabFilterRegex");
         if (regexPref != null) regexPref.setOnPreferenceClickListener(pref -> {
             // Reset the error dialog when shown; if the dialog was closed with the cancel button

app/src/main/res/xml/preferences.xml

@@ -2,7 +2,8 @@
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
     android:key="@string/preferences_file_key">
 
-    <PreferenceCategory android:title="@string/pref_title_appearance_settings">
+    <PreferenceCategory android:title="@string/pref_title_appearance_settings"
+        android:key="categoryAppearance">
 
         <ListPreference
             android:defaultValue="night"