Renaming APG to OpenPGP Keychain

OpenPGP-Keychain/src/org/sufficientlysecure/keychain/compatibility/DialogFragmentWorkaround.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.sufficientlysecure.keychain.compatibility;
+
+import android.os.Build;
+import android.os.Handler;
+
+/**
+ * Bug on Android >= 4.2
+ * 
+ * http://code.google.com/p/android/issues/detail?id=41901
+ * 
+ * DialogFragment disappears on pressing home and comming back. This also happens especially in
+ * FileDialogFragment after launching a file manager and coming back.
+ * 
+ * Usage: <code>
+ * DialogFragmentWorkaround.INTERFACE.runnableRunDelayed(new Runnable() {
+ *          public void run() {
+ *              // show dialog...
+ *          }
+ *      });
+ * </code>
+ */
+public class DialogFragmentWorkaround {
+    public static final SDKLevel17Interface INTERFACE = ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) ? new SDKLevel17Impl()
+            : new SDKLevelPriorLevel17Impl());
+
+    private static final int RUNNABLE_DELAY = 300;
+
+    public interface SDKLevel17Interface {
+        // Workaround for http://code.google.com/p/android/issues/detail?id=41901
+        void runnableRunDelayed(Runnable runnable);
+    }
+
+    private static class SDKLevelPriorLevel17Impl implements SDKLevel17Interface {
+        @Override
+        public void runnableRunDelayed(Runnable runnable) {
+            runnable.run();
+        }
+    }
+
+    private static class SDKLevel17Impl implements SDKLevel17Interface {
+        @Override
+        public void runnableRunDelayed(Runnable runnable) {
+            new Handler().postDelayed(runnable, RUNNABLE_DELAY);
+        }
+    }
+
+    // Can't instantiate this class
+    private DialogFragmentWorkaround() {
+    }
+}