From 07a597ad185c8c31ac38bdd4d022b0b880d02859 Mon Sep 17 00:00:00 2001
From: Lulu Wu <luluwu@fb.com>
Date: Fri, 28 Aug 2020 01:42:18 -0700
Subject: [PATCH] Fix Xiaomi TextInput crash in native

Summary:
Long term fix in native for Error: android_crash:java.lang.NullPointerException:android.widget.Editor$SelectionModifierCursorController.access$300

For more detail please see T68183343 D23301714

Changelog:
[Android][Changed] - Fix Xiaomi TextInput crash in native

Reviewed By: mdvacca

Differential Revision: D23331828

fbshipit-source-id: 914f2d431772f49711b940d47a2b3ef57ab82cdc
---
 Libraries/Components/TextInput/TextInput.js   |  3 +++
 .../react/views/textinput/ReactEditText.java  | 20 ++++++++++++++++---
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/Libraries/Components/TextInput/TextInput.js b/Libraries/Components/TextInput/TextInput.js
index 654765e7c79..b510773d822 100644
--- a/Libraries/Components/TextInput/TextInput.js
+++ b/Libraries/Components/TextInput/TextInput.js
@@ -486,6 +486,9 @@ export type Props = $ReadOnly<{|
    * The following values work on Android only:
    *
    * - `visible-password`
+   *
+   * On Android devices manufactured by Xiaomi with Android Q, 'email-address'
+   * type will be replaced in native by 'default' to prevent a system related crash.
    */
   keyboardType?: ?KeyboardType,
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java
index cbda60c185b..c0cb0df07b8 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java
@@ -389,11 +389,25 @@ public class ReactEditText extends AppCompatEditText
   @Override
   public void setInputType(int type) {
     Typeface tf = super.getTypeface();
-    super.setInputType(type);
-    mStagedInputType = type;
     // Input type password defaults to monospace font, so we need to re-apply the font
     super.setTypeface(tf);
 
+    int inputType = type;
+
+    // Set InputType to TYPE_CLASS_TEXT (the default one for Android) to fix a crash on Xiaomi
+    // devices with Android Q. This crash happens when focusing on a email EditText within a
+    // ScrollView, a prompt will be triggered but the system fail to locate it properly.
+    // Here is an example post discussing about this issue:
+    // https://github.com/facebook/react-native/issues/27204
+    if (inputType == InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS
+        && Build.VERSION.SDK_INT == Build.VERSION_CODES.Q
+        && Build.MANUFACTURER.startsWith("Xiaomi")) {
+      inputType = InputType.TYPE_CLASS_TEXT;
+    }
+
+    super.setInputType(inputType);
+    mStagedInputType = inputType;
+
     /**
      * If set forces multiline on input, because of a restriction on Android source that enables
      * multiline only for inputs of type Text and Multiline on method {@link
@@ -407,7 +421,7 @@ public class ReactEditText extends AppCompatEditText
     // We override the KeyListener so that all keys on the soft input keyboard as well as hardware
     // keyboards work. Some KeyListeners like DigitsKeyListener will display the keyboard but not
     // accept all input from it
-    mKeyListener.setInputType(type);
+    mKeyListener.setInputType(inputType);
     setKeyListener(mKeyListener);
   }