Fix android.content.ActivityNotFoundException when sending email

app/src/main/java/com/hippo/ehviewer/util/AppUtils.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Hippo Seven
+ *
+ * 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 com.hippo.ehviewer.util;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
+public final class AppUtils {
+
+    // TODO add common error tip
+    public static void sendEmail(@NonNull Activity from, @NonNull String email,
+            @Nullable String subject, @Nullable String text) {
+        Intent i = new Intent(Intent.ACTION_SENDTO);
+        i.setData(Uri.parse("mailto:" + email));
+        if (subject != null) {
+            i.putExtra(Intent.EXTRA_SUBJECT, subject);
+        }
+        if (text != null) {
+            i.putExtra(Intent.EXTRA_TEXT, text);
+        }
+
+        try {
+            from.startActivity(i);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}