Add about settings

app/src/main/java/com/hippo/ehviewer/ui/LicenseActivity.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2016 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.ui;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.view.MenuItem;
+import android.webkit.WebView;
+
+import com.hippo.ehviewer.R;
+
+public class LicenseActivity extends ToolbarActivity {
+
+    @Nullable
+    private WebView mWebView;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mWebView = new WebView(this);
+        mWebView.loadUrl("file:///android_asset/NOTICE");
+        setContentView(mWebView);
+
+        setNavigationIcon(R.drawable.v_arrow_left_dark_x24);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+
+        if (null != mWebView) {
+            mWebView.destroy();
+            mWebView = null;
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                finish();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+}