Fix CursorDrawable Color Tint for Android 10+

Summary:
Accessing this field via reflection is explicitly blacklisted by Google in Android 10 and higher. They have provided a new API to change the color, which I have implemented here. [The old setColorFilter is deprecated](https://developer.android.com/reference/android/graphics/drawable/Drawable#setColorFilter(int,%20android.graphics.PorterDuff.Mode)) so I also updated that method call as well.

Changelog: [General] [Fixed] Use new setTextCursorDrawable API for Android 10

Reviewed By: JoshuaGross

Differential Revision: D20656068

fbshipit-source-id: 58a92b57c0a892c7c87fc5d735e4ceaa4e987ec7

ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java

@@ -11,6 +11,8 @@
 
 import android.content.Context;
 import android.content.res.ColorStateList;
+import android.graphics.BlendMode;
+import android.graphics.BlendModeColorFilter;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
@@ -433,8 +435,24 @@ public void setSelectionColor(ReactEditText view, @Nullable Integer color) {
 
   @ReactProp(name = "cursorColor", customType = "Color")
   public void setCursorColor(ReactEditText view, @Nullable Integer color) {
-    // Evil method that uses reflection because there is no public API to changes
-    // the cursor color programmatically.
+
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+      Drawable cursorDrawable = view.getTextCursorDrawable();
+      if (cursorDrawable != null) {
+        cursorDrawable.setColorFilter(new BlendModeColorFilter(color, BlendMode.SRC_IN));
+        view.setTextCursorDrawable(cursorDrawable);
+      }
+      return;
+    }
+
+    if (Build.VERSION.SDK_INT == Build.VERSION_CODES.P) {
+      // Pre-Android 10, there was no supported API to change the cursor color programmatically.
+      // In Android 9.0, they changed the underlying implementation,
+      // but also "dark greylisted" the new field, rendering it unusable.
+      return;
+    }
+
+    // The evil code that follows uses reflection to achieve this on Android 8.1 and below.
     // Based on
     // http://stackoverflow.com/questions/25996032/how-to-change-programatically-edittext-cursor-color-in-android.
     try {