fix: pause before teardown

src/android/app/src/main/java/org/yuzu/yuzu_emu/activities/EmulationActivity.kt

@@ -204,9 +204,9 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener, InputManager
     }
 
     override fun onPause() {
-        super.onPause()
         nfcReader.stopScanning()
         stopMotionSensorListener()
+        super.onPause()
     }
 
     override fun onDestroy() {
@@ -339,6 +339,10 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener, InputManager
     }
 
     override fun onSensorChanged(event: SensorEvent) {
+        if (!NativeLibrary.isRunning() || NativeLibrary.isPaused()) {
+            return
+        }
+
         val rotation = this.display?.rotation
         if (rotation == Surface.ROTATION_90) {
             flipMotionOrientation = true

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/EmulationFragment.kt

@@ -2217,14 +2217,13 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
             if (surface == null) {
                 Log.debug("[EmulationFragment] clearSurface called, but surface already null.")
             } else {
+                if (state == State.RUNNING) {
+                    pause()
+                }
                 NativeLibrary.surfaceDestroyed()
                 surface = null
                 Log.debug("[EmulationFragment] Surface destroyed.")
                 when (state) {
-                    State.RUNNING -> {
-                        state = State.PAUSED
-                    }
-
                     State.PAUSED -> Log.debug(
                         "[EmulationFragment] Surface cleared while emulation paused."
                     )

src/android/app/src/main/jni/emu_window/emu_window.cpp

@@ -14,6 +14,14 @@
 #include "jni/native.h"
 
 void EmuWindow_Android::OnSurfaceChanged(ANativeWindow* surface) {
+    if (!surface) {
+        LOG_INFO(Frontend, "EmuWindow_Android::OnSurfaceChanged received null surface");
+        m_window_width = 0;
+        m_window_height = 0;
+        window_info.render_surface = nullptr;
+        return;
+    }
+
     m_window_width = ANativeWindow_getWidth(surface);
     m_window_height = ANativeWindow_getHeight(surface);