diff --git a/app.lua b/app.lua
index b35d959..93fa057 100644
--- a/app.lua
+++ b/app.lua
@@ -1,9 +1,12 @@
 nativefs = require 'nativefs'
 
+local Keys_down = {}
+
 -- main entrypoint for LÖVE
 --
 -- Most apps can just use the default shown in https://love2d.org/wiki/love.run,
 -- but we need to override it to:
+--   * recover from errors (by sending them to the driver and waiting for a command)
 --   * run all tests (functions starting with 'test_') on startup, and
 --   * save some state that makes it possible to switch between the main app
 --     and a source editor, while giving each the illusion of complete
@@ -14,7 +17,21 @@ function love.run()
   -- have LÖVE delegate all handlers to App if they exist
   for name in pairs(love.handlers) do
     if App[name] then
-      love.handlers[name] = App[name]
+      -- love.keyboard.isDown doesn't work on Android, so emulate it using
+      -- keypressed and keyreleased events
+      if name == 'keypressed' then
+        love.handlers[name] = function(key, scancode, isrepeat)
+                                Keys_down[key] = true
+                                return App.keypressed(key, scancode, isrepeat)
+                              end
+      elseif name == 'keyreleased' then
+        love.handlers[name] = function(key, scancode)
+                                Keys_down[key] = nil
+                                return App.keyreleased(key, scancode)
+                              end
+      else
+        love.handlers[name] = App[name]
+      end
     end
   end
 
@@ -46,7 +63,7 @@ function love.run()
   App.fake_mouse_state = nil
   App.fake_mouse_press = nil
   App.fake_mouse_release = nil
-  -- dispatch some methods to real hardware
+  -- other methods dispatch to real hardware
   App.screen.resize = love.window.setMode
   App.screen.size = love.window.getMode
   App.screen.move = love.window.setPosition
@@ -79,7 +96,7 @@ function love.run()
   App.get_time = love.timer.getTime
   App.get_clipboard = love.system.getClipboardText
   App.set_clipboard = love.system.setClipboardText
-  App.key_down = love.keyboard.isDown
+  App.key_down = function(key) return Keys_down[key] end
   App.mouse_move = love.mouse.setPosition
   App.mouse_down = love.mouse.isDown
   App.mouse_x = love.mouse.getX