fixes for #890 (deadlock on pause/resume with pyjnius/pygame)

pythonforandroid/bootstraps/pygame/build/src/org/renpy/android/PythonActivity.java

@@ -8,10 +8,12 @@
 import android.view.KeyEvent;
 import android.view.Window;
 import android.view.WindowManager;
+import android.view.ViewTreeObserver;
 import android.widget.Toast;
 import android.util.Log;
 import android.content.pm.PackageManager;
 import android.content.pm.ApplicationInfo;
+import android.graphics.Rect;
 
 import java.io.InputStream;
 import java.io.FileInputStream;
@@ -150,6 +152,9 @@ protected void onCreate(Bundle savedInstanceState) {
             getWindow().getDecorView().setBackgroundColor(
                 this.mInfo.metaData.getInt("android.background_color"));
         }
+
+        this._layout_listener = new PythonLayoutListener(this);
+        this.mView.getViewTreeObserver().addOnGlobalLayoutListener(this._layout_listener);
     }
 
     /**
@@ -623,5 +628,45 @@ static String billingGetPendingMessage() {
         return mActivity.mBillingQueue.remove(0);
     }
 
+
+    //Layout Listener for kivy
+    //replaces use of pyjnius in "android" package which can result in deadlock
+    //on app pause
+    public class PythonLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener {
+
+        private int height = 0;
+        private PythonActivity mActivity = null;
+
+        public PythonLayoutListener(PythonActivity _mActivity) {
+            this.mActivity = _mActivity;
+        }
+
+        @Override
+        public void onGlobalLayout() {
+            Rect rctx = new Rect();
+            // print('rctx_bottom: {0}, top: {1}'.format(rctx.bottom, rctx.top))
+            this.mActivity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rctx);
+            // print('rctx_bottom: {0}, top: {1}'.format(rctx.bottom, rctx.top))
+            // print('activity height: {0}'.format(mActivity.getWindowManager().getDefaultDisplay().getHeight())) 
+            // NOTE top should always be zero
+            rctx.top = 0;
+            this.height = this.mActivity.getWindowManager().getDefaultDisplay().getHeight() - (rctx.bottom - rctx.top);
+            // print('final height: {0}'.format(self.height))
+
+        }
+
+        public int getHeight() {
+            return this.height;
+        }
+
+    }
+
+    private PythonLayoutListener _layout_listener = null;
+
+    public int getLayoutListenerHeight() {
+        return this._layout_listener.getHeight();
+    }
+
 }
 
+

pythonforandroid/recipes/android/src/android/_android.pyx

@@ -196,14 +196,17 @@ if mActivity:
             self.height = mActivity.getWindowManager().getDefaultDisplay().getHeight() - (rctx.bottom - rctx.top)
             # print('final height: {0}'.format(self.height))
 
-    ll = LayoutListener()
     IF BOOTSTRAP == 'sdl2':
+        ll = LayoutListener()
         python_act.getLayout().getViewTreeObserver().addOnGlobalLayoutListener(ll)
-    ELSE:
-        python_act.mView.getViewTreeObserver().addOnGlobalLayoutListener(ll)
 
-    def get_keyboard_height():
-        return ll.height
+        def get_keyboard_height():
+            return ll.height
+
+    ELSE:
+        def get_keyboard_height():
+            return python_act.getLayoutListenerHeight()
+
 else:
     def get_keyboard_height():
         return 0