From 0858d4120df242196570f5394f8ae4e623533493 Mon Sep 17 00:00:00 2001
From: fabriziobertoglio1987 <fabrizio.bertoglio@gmail.com>
Date: Tue, 21 Jul 2020 11:12:20 +0200
Subject: [PATCH] Fix Drawable Runtime - More Info in Description

The AppCompat Theme Theme.AppCompat.Light.NoActionBar provides a default
Drawable resource for AppCompatEditText. The resource is located in
@drawable/abc_edit_text_material.xml

https://chromium.googlesource.com/android_tools/+/7200281446186c7192cb02f54dc2b38e02d705e5/sdk/extras/android/support/v7/appcompat/res/drawable/abc_edit_text_material.xml

A Runtime Error is triggered in a scenario with the following conditions:

1) Rendering a large number of TextInputs in the screen with a key prop
2) Triggering re-render with setInterval

The scenario is also experienced with FlatList and ONLY using TextInput
component.

The following Runtime Error is triggered:

NullPointerException:tempt to invoke virtual method 'android.graphics.drawable.Drawable android.graphics.drawable.Drawable$ConstantState.newDrawable(android.content.res.Resources)

It is caused from the following line from abc_edit_text_material.xml

<item android:state_pressed="false" android:state_focused="false" android:drawable="@drawable/abc_textfield_default_mtrl_alpha"/>

I posted a Minimal Reproducible Example at https://github.com/facebook/react-native/issues/17530#issuecomment-660017858

This commit simply changes RNTester to use a custom drawable resource
for TextInput named @drawable/edit_text.
---
 .../android/app/src/main/AndroidManifest.xml  |  2 +-
 .../app/src/main/res/drawable/edit_text.xml   | 28 +++++++++++++++++++
 .../app/src/main/res/values/styles.xml        |  4 +--
 3 files changed, 31 insertions(+), 3 deletions(-)
 create mode 100644 RNTester/android/app/src/main/res/drawable/edit_text.xml

diff --git a/RNTester/android/app/src/main/AndroidManifest.xml b/RNTester/android/app/src/main/AndroidManifest.xml
index d47ee519ae3180..83b69d1f4ad42d 100644
--- a/RNTester/android/app/src/main/AndroidManifest.xml
+++ b/RNTester/android/app/src/main/AndroidManifest.xml
@@ -30,7 +30,7 @@
       android:banner="@drawable/tv_banner"
       android:icon="@drawable/launcher_icon"
       android:label="@string/app_name"
-      android:theme="@style/Theme.ReactNative.AppCompat.Light" >
+      android:theme="@style/AppTheme">
     <activity
         android:name=".RNTesterActivity"
         android:label="@string/app_name"
diff --git a/RNTester/android/app/src/main/res/drawable/edit_text.xml b/RNTester/android/app/src/main/res/drawable/edit_text.xml
new file mode 100644
index 00000000000000..87038a91bbc483
--- /dev/null
+++ b/RNTester/android/app/src/main/res/drawable/edit_text.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+       android:insetLeft="@dimen/abc_edit_text_inset_horizontal_material"
+       android:insetRight="@dimen/abc_edit_text_inset_horizontal_material"
+       android:insetTop="@dimen/abc_edit_text_inset_top_material"
+       android:insetBottom="@dimen/abc_edit_text_inset_bottom_material">
+
+    <selector>
+        <item android:state_enabled="false" android:drawable="@drawable/abc_textfield_default_mtrl_alpha"/>
+        <item android:drawable="@drawable/abc_textfield_activated_mtrl_alpha"/>
+    </selector>
+
+</inset>
+
diff --git a/RNTester/android/app/src/main/res/values/styles.xml b/RNTester/android/app/src/main/res/values/styles.xml
index 62fe59fa485459..e0800ee36e0c58 100644
--- a/RNTester/android/app/src/main/res/values/styles.xml
+++ b/RNTester/android/app/src/main/res/values/styles.xml
@@ -1,9 +1,9 @@
 <resources>
-
     <!-- Base application theme. -->
     <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
         <!-- Customize your theme here. -->
         <item name="android:textColor">#000000</item>
+        <item name="android:editTextBackground">@drawable/edit_text</item>
     </style>
-
 </resources>
+