Bug fix: keyboard doesn't appear when detecting volume hardware buttons

- issue: flutter-moum#13
giantsol · Oct 2, 2019 · 3cc3737 · 3cc3737
1 parent 2e98611
commit 3cc3737
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Showing 2 changed files with 23 additions and 3 deletions.
diff --git a/android/src/main/kotlin/flutter/moum/hardware_buttons/HardwareButtonsWatcherManager.kt b/android/src/main/kotlin/flutter/moum/hardware_buttons/HardwareButtonsWatcherManager.kt
@@ -125,7 +125,7 @@ object HardwareButtonsWatcherManager {
             keyWatcher = KeyWatcher(application.applicationContext, callback = {
                 dispatchVolumeButtonEvent(it)
                 currentActivity?.dispatchKeyEvent(it)
-            })
+            }, findFocusCallback = { currentActivity?.window?.decorView?.rootView })
             addOverlayWindowView(application, keyWatcher!!)
         }
     }
@@ -200,12 +200,19 @@ private class KeyWatcher @JvmOverloads constructor(
     context: Context,
     attrs: AttributeSet? = null,
     defStyleAttr: Int = 0,
-    private val callback: ((event: KeyEvent) -> Unit)? = null
+    private val callback: ((event: KeyEvent) -> Unit)? = null,
+    private val findFocusCallback: (() -> View?)? = null
 ) : View(context, attrs, defStyleAttr) {
     override fun dispatchKeyEvent(event: KeyEvent): Boolean {
         callback?.invoke(event)
         return false
     }
+
+    // without this, flutter app will not be able to show keyboard
+    // because KeyWatcher view window takes all the focus..
+    override fun findFocus(): View? {
+        return findFocusCallback?.invoke()
+    }
 }
 
 private class HomeButtonWatcher(private val callback: () -> Unit): BroadcastReceiver() {

diff --git a/example/lib/main.dart b/example/lib/main.dart
@@ -47,7 +47,20 @@ class _MyAppState extends State<MyApp> {
           title: const Text('Plugin example app'),
         ),
         body: Center(
-          child: Text('Value: $_latestHardwareButtonEvent\n'),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: <Widget>[
+              Text('Value: $_latestHardwareButtonEvent\n'),
+              SizedBox(
+                width: 300,
+                child: TextField(
+                  decoration: InputDecoration(
+                    hintText: '안드 테스트 용도입니다 ㅠ.ㅠ',
+                  ),
+                ),
+              )
+            ],
+          ),
         ),
       ),
     );