From 0d4157357a047bbd323a2068edbcd64cf72c8a28 Mon Sep 17 00:00:00 2001
From: Romain Vimont <rom@rom1v.com>
Date: Fri, 16 Jun 2023 23:59:52 +0200
Subject: [PATCH] Use system context as base context

DONOTMERGE: it causes #994 on Xiaomi devices

This allows to make Context.getPackageManager() work.

Fixes #4015 <https://github.com/Genymobile/scrcpy/issues/4015>
Refs <https://github.com/Genymobile/scrcpy/issues/4015#issuecomment-1594262721>

Co-authored-by: Simon Chan <1330321+yume-chan@users.noreply.github.com>
---
 .../com/genymobile/scrcpy/FakeContext.java    | 20 ++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/server/src/main/java/com/genymobile/scrcpy/FakeContext.java b/server/src/main/java/com/genymobile/scrcpy/FakeContext.java
index 738203dedc..ea34857ac1 100644
--- a/server/src/main/java/com/genymobile/scrcpy/FakeContext.java
+++ b/server/src/main/java/com/genymobile/scrcpy/FakeContext.java
@@ -1,11 +1,16 @@
 package com.genymobile.scrcpy;
 
+import com.genymobile.scrcpy.wrappers.ActivityThread;
+
 import android.annotation.TargetApi;
 import android.content.AttributionSource;
+import android.content.Context;
 import android.content.ContextWrapper;
 import android.os.Build;
 import android.os.Process;
 
+import java.lang.reflect.Method;
+
 public final class FakeContext extends ContextWrapper {
 
     public static final String PACKAGE_NAME = "com.android.shell";
@@ -13,12 +18,25 @@ public final class FakeContext extends ContextWrapper {
 
     private static final FakeContext INSTANCE = new FakeContext();
 
+    private static Context retrieveSystemContext() {
+        try {
+            Class<?> activityThreadClass = ActivityThread.getActivityThreadClass();
+            Object activityThread = ActivityThread.getActivityThread();
+
+            Method getSystemContextMethod = activityThreadClass.getDeclaredMethod("getSystemContext");
+            return (Context) getSystemContextMethod.invoke(activityThread);
+        } catch (Exception e) {
+            Ln.e("Cannot retrieve system context", e);
+            return null;
+        }
+    }
+
     public static FakeContext get() {
         return INSTANCE;
     }
 
     private FakeContext() {
-        super(null);
+        super(retrieveSystemContext());
     }
 
     @Override