diff --git a/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.java b/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.java
index b0fb232c2..30b6e1e90 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.java
@@ -28,6 +28,8 @@ import com.hippo.ehviewer.widget.SearchBar;
 import com.hippo.ehviewer.widget.SearchDatabase;
 import com.hippo.ehviewer.widget.SearchLayout;
 import com.hippo.scene.Scene;
+import com.hippo.scene.SimpleDialog;
+import com.hippo.util.AppHandler;
 import com.hippo.util.Log;
 import com.hippo.util.ViewUtils;
 
@@ -77,6 +79,13 @@ class GalleryListScene extends Scene implements SearchBar.Helper {
 
         // TEST
         mContentLayout.showText("四姑拉斯基");
+
+        AppHandler.getInstance().postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                new SimpleDialog.Builder().setTitle("NIhao").show();
+            }
+        }, 2000);
     }
 
     @Override
diff --git a/app/src/main/java/com/hippo/ehviewer/widget/SearchLayout.java b/app/src/main/java/com/hippo/ehviewer/widget/SearchLayout.java
index 00c24134e..1918df294 100644
--- a/app/src/main/java/com/hippo/ehviewer/widget/SearchLayout.java
+++ b/app/src/main/java/com/hippo/ehviewer/widget/SearchLayout.java
@@ -25,7 +25,6 @@ import android.support.annotation.Nullable;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.SwitchCompat;
-import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.SparseArray;
 import android.view.LayoutInflater;
@@ -83,7 +82,6 @@ public class SearchLayout extends FrameLayout implements CompoundButton.OnChecke
     private View mNormalView;
     private CategoryTable mTableCategory;
     private CheckBox mCheckSpecifyAuthor;
-    private FloatLabelEditText mTextSearch;
     private SwitchCompat mSwitchEnableAdvance;
 
     private View mAdvanceView;
@@ -224,7 +222,7 @@ public class SearchLayout extends FrameLayout implements CompoundButton.OnChecke
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         if (buttonView == mCheckSpecifyAuthor) {
-            mTextSearch.setPrefix(isChecked ? "uploader:" : null);
+            // TODO
 
         } else if (buttonView == mSwitchEnableAdvance) {
             mEnableAdvance = isChecked;
@@ -288,10 +286,7 @@ public class SearchLayout extends FrameLayout implements CompoundButton.OnChecke
                 if (mTableCategory != null) {
                     lub.setCategory(mTableCategory.getCategory());
                 }
-                if (mTextSearch != null) {
-                    String searchKey = mTextSearch.getText().toString();
-                    lub.setSearchKey(TextUtils.isEmpty(searchKey) ? null : searchKey);
-                }
+                // TODO
                 if (mSwitchEnableAdvance.isChecked() && mTableAdvanceSearch != null) {
                     lub.setAdvanceSearch(mTableAdvanceSearch.getAdvanceSearch());
                     lub.setMinRating(mTableAdvanceSearch.getMinRating());
@@ -377,7 +372,6 @@ public class SearchLayout extends FrameLayout implements CompoundButton.OnChecke
                 bindActionView((ActionHolder) holder);
             } else {
                 View view = mInflater.inflate(R.layout.search_category, parent, false);
-                // ViewCompat.setElevation(view, UiUtils.dp2pix(4)); // TODO
                 holder = new SearchHolder(view);
                 switch (viewType) {
                     case ITEM_TYPE_NORMAL:{
@@ -410,7 +404,6 @@ public class SearchLayout extends FrameLayout implements CompoundButton.OnChecke
                 mNormalView = holder.content.getChildAt(0);
                 mTableCategory = (CategoryTable) mNormalView.findViewById(R.id.search_category_table);
                 mCheckSpecifyAuthor = (CheckBox) mNormalView.findViewById(R.id.search_specify_author);
-                mTextSearch = (FloatLabelEditText) mNormalView.findViewById(R.id.search_text);
                 mSwitchEnableAdvance = (SwitchCompat) mNormalView.findViewById(R.id.search_enable_advance);
 
                 // Restore state
diff --git a/app/src/main/java/com/hippo/scene/Scene.java b/app/src/main/java/com/hippo/scene/Scene.java
index e1b8b777d..6a0aa4d4b 100644
--- a/app/src/main/java/com/hippo/scene/Scene.java
+++ b/app/src/main/java/com/hippo/scene/Scene.java
@@ -15,6 +15,7 @@
 
 package com.hippo.scene;
 
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.os.Parcelable;
@@ -48,6 +49,8 @@ public abstract class Scene {
 
     private @Nullable Curtain mCurtain;
 
+    private @Nullable Announcer mAnnouncer;
+
     @SuppressWarnings("deprecation")
     private @Nullable AbsoluteLayout mSceneView;
 
@@ -55,7 +58,7 @@ public abstract class Scene {
 
     private int mState;
 
-    private static SceneManager sSceneManager;
+    protected static SceneManager sSceneManager;
 
     private int mFitPaddingBottom = -1;
 
@@ -67,10 +70,18 @@ public abstract class Scene {
         mCurtain = curtain;
     }
 
+    void setAnnouncer(@Nullable Announcer announcer) {
+        mAnnouncer = announcer;
+    }
+
     @Nullable Curtain getCurtain() {
         return mCurtain;
     }
 
+    @Nullable Announcer getAnnouncer() {
+        return mAnnouncer;
+    }
+
     // If there is no StageActivity for SceneManager, yout will get AssertError
     public @NonNull StageActivity getStageActivity() {
         StageActivity stageActivity = sSceneManager.getStageActivity();
@@ -108,6 +119,11 @@ public abstract class Scene {
         mState = state;
     }
 
+    @SuppressWarnings("deprecation")
+    protected AbsoluteLayout createSceneView(Context context) {
+        return new AbsoluteLayout(context);
+    }
+
     public final void finish() {
         sSceneManager.finishScene(this);
     }
@@ -116,8 +132,7 @@ public abstract class Scene {
         onCreate(savedInstanceState);
 
         if (mSceneView == null) {
-            //noinspection deprecation
-            mSceneView = new AbsoluteLayout(getStageActivity());
+            mSceneView = createSceneView(getStageActivity());
             initBackground(mSceneView);
         }
 
@@ -190,8 +205,7 @@ public abstract class Scene {
 
     protected void setContentView(int resId) {
         StageActivity sa = getStageActivity();
-        //noinspection deprecation
-        mSceneView = new AbsoluteLayout(sa);
+        mSceneView = createSceneView(sa);
         initBackground(mSceneView);
         mSceneView.setBackgroundColor(mBackgroundColor);
         sa.getLayoutInflater().inflate(resId, mSceneView);
@@ -199,15 +213,18 @@ public abstract class Scene {
 
     protected void setContentView(View view) {
         StageActivity sa = getStageActivity();
-        //noinspection deprecation
-        mSceneView = new AbsoluteLayout(sa);
+        mSceneView = createSceneView(sa);
         initBackground(mSceneView);
-        mSceneView.addView(view, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
+        mSceneView.addView(view, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.MATCH_PARENT));
     }
 
     private void initBackground(@NonNull View bg) {
         bg.setBackgroundColor(mBackgroundColor);
         bg.setClickable(true);
+        bg.setFocusable(true);
+        bg.setFocusableInTouchMode(true);
+        bg.requestFocus();
     }
 
     protected void onCreate(@Nullable Bundle savedInstanceState) {
diff --git a/app/src/main/java/com/hippo/scene/SceneDialog.java b/app/src/main/java/com/hippo/scene/SceneDialog.java
new file mode 100644
index 000000000..11d91d912
--- /dev/null
+++ b/app/src/main/java/com/hippo/scene/SceneDialog.java
@@ -0,0 +1,29 @@
+/*
+ * 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
+ * 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.scene;
+
+import android.support.annotation.Nullable;
+
+public abstract class SceneDialog extends Scene {
+
+    public void show() {
+        sSceneManager.showDialog(this, null);
+    }
+
+    public void show(@Nullable Curtain curtain) {
+        sSceneManager.showDialog(this, curtain);
+    }
+}
diff --git a/app/src/main/java/com/hippo/scene/SceneManager.java b/app/src/main/java/com/hippo/scene/SceneManager.java
index b7ff81dd1..88e6eae52 100644
--- a/app/src/main/java/com/hippo/scene/SceneManager.java
+++ b/app/src/main/java/com/hippo/scene/SceneManager.java
@@ -44,9 +44,18 @@ class SceneManager {
         return mStageActivity;
     }
 
+    private boolean isStageAlive() {
+        return mStageActivity != null;
+    }
+
     // TODO check previousState state
     void startScene(@NonNull Class sceneClass, @Nullable Announcer announcer,
             @Nullable Curtain curtain) {
+        if (!isStageAlive()) {
+            Log.w(TAG, "Stage is not alive, but attemp to create " + sceneClass.getSimpleName());
+            return;
+        }
+
         Scene scene;
         try {
             scene = (Scene) sceneClass.newInstance();
@@ -58,8 +67,24 @@ class SceneManager {
         } catch (ClassCastException e) {
             throw new IllegalStateException(sceneClass.getName() + " can not cast to scene");
         }
+        scene.setAnnouncer(announcer);
         scene.setCurtain(curtain);
 
+        startScene(scene, curtain);
+    }
+
+    void showDialog(@NonNull SceneDialog dialog, @Nullable Curtain curtain) {
+        if (!isStageAlive()) {
+            Log.w(TAG, "Stage is not alive, but attemp to show dialog " + dialog.toString());
+            return;
+        }
+
+        dialog.setCurtain(curtain);
+
+        startScene(dialog, curtain);
+    }
+
+    private void startScene(Scene scene, Curtain curtain) {
         Scene previousState = getTopState();
         mSceneStack.push(scene);
 
diff --git a/app/src/main/java/com/hippo/scene/SimpleDialog.java b/app/src/main/java/com/hippo/scene/SimpleDialog.java
new file mode 100644
index 000000000..4fa102270
--- /dev/null
+++ b/app/src/main/java/com/hippo/scene/SimpleDialog.java
@@ -0,0 +1,85 @@
+/*
+ * 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
+ * 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.scene;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.widget.TextView;
+
+import com.hippo.ehviewer.R;
+
+public class SimpleDialog extends SceneDialog {
+
+    private static final int BACKGROUND_COLOR = 0x61000000;
+
+    private Builder mBuilder;
+
+    private StageActivity mActivity;
+
+    private SimpleDialogFrame mFrame;
+    private TextView mTitle;
+
+    private SimpleDialog(Builder builder) {
+        mBuilder = builder;
+    }
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        // TODO
+        setBackgroundColor(BACKGROUND_COLOR);
+
+        mActivity = getStageActivity();
+
+        mFrame = new SimpleDialogFrame(mActivity);
+        setContentView(mFrame);
+
+        mActivity.getLayoutInflater().inflate(R.layout.simple_dialog, mFrame);
+
+        mTitle = (TextView) findViewById(R.id.title);
+
+        bindDialog();
+    }
+
+    private void bindDialog() {
+        mTitle.setText(mBuilder.mTitle);
+    }
+
+    @Override
+    protected void onGetFitPaddingBottom(int b) {
+        mFrame.setFitPaddingBottom(b);
+    }
+
+    public static class Builder {
+
+        private String mTitle;
+
+        public Builder setTitle(String title) {
+            mTitle = title;
+            return this;
+        }
+
+        public @NonNull SceneDialog build() {
+            return new SimpleDialog(this);
+        }
+
+        public void show() {
+            new SimpleDialog(this).show();
+        }
+    }
+}
diff --git a/app/src/main/java/com/hippo/scene/SimpleDialogFrame.java b/app/src/main/java/com/hippo/scene/SimpleDialogFrame.java
new file mode 100644
index 000000000..c04463e77
--- /dev/null
+++ b/app/src/main/java/com/hippo/scene/SimpleDialogFrame.java
@@ -0,0 +1,91 @@
+/*
+ * 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
+ * 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.scene;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.support.v7.widget.CardView;
+import android.util.AttributeSet;
+import android.widget.AbsoluteLayout;
+
+import com.hippo.ehviewer.R;
+import com.hippo.util.ResourcesUtils;
+
+public class SimpleDialogFrame extends CardView {
+
+    private int mPadding;
+    private int mFixedWidth;
+    private float mFixedWidthPercent;
+    private float mFixedHeightPercent;
+    private int mFitPaddingBottom;
+
+    public SimpleDialogFrame(Context context) {
+        super(context);
+        init(context);
+    }
+
+    public SimpleDialogFrame(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context);
+    }
+
+    public SimpleDialogFrame(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        init(context);
+    }
+
+    private void init(Context context) {
+        Resources resources = context.getResources();
+        mPadding = resources.getDimensionPixelOffset(R.dimen.simple_dialog_padding);
+        mFixedWidth = resources.getDimensionPixelOffset(R.dimen.simple_dialog_fixed_width);
+        mFixedWidthPercent =  ResourcesUtils.getFloat(resources, R.dimen.simple_dialog_fixed_width_percent);
+        mFixedHeightPercent =  ResourcesUtils.getFloat(resources, R.dimen.simple_dialog_fixed_height_percent);
+    }
+
+    public void setFitPaddingBottom(int fitPaddingBottom) {
+        if (mFitPaddingBottom != fitPaddingBottom) {
+            mFitPaddingBottom = fitPaddingBottom;
+            requestLayout();
+        }
+    }
+
+    @SuppressWarnings("deprecation")
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        // Width
+        int originalWidth = MeasureSpec.getSize(widthMeasureSpec);
+        if (MeasureSpec.getMode(widthMeasureSpec) != MeasureSpec.UNSPECIFIED) {
+            int fixedWidth = Math.min((int) (originalWidth * mFixedWidthPercent), mFixedWidth) -
+                    (2 * mPadding);
+            widthMeasureSpec = MeasureSpec.makeMeasureSpec(fixedWidth, MeasureSpec.EXACTLY);
+        }
+        // Height
+        int originalHeight = MeasureSpec.getSize(heightMeasureSpec);
+        if (MeasureSpec.getMode(heightMeasureSpec) != MeasureSpec.UNSPECIFIED) {
+            int fixedHeight = (int) ((originalHeight - mFitPaddingBottom) * mFixedHeightPercent) -
+                    (2 * mPadding);
+            heightMeasureSpec = MeasureSpec.makeMeasureSpec(fixedHeight, MeasureSpec.AT_MOST);
+        }
+        // Measure
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        // Update x, y
+        int width = getMeasuredWidth();
+        int height = getMeasuredHeight();
+        AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) getLayoutParams();
+        lp.x = (originalWidth - width) / 2;
+        lp.y = (originalHeight - mFitPaddingBottom - height) / 2;
+    }
+}
diff --git a/app/src/main/java/com/hippo/util/ResourcesUtils.java b/app/src/main/java/com/hippo/util/ResourcesUtils.java
new file mode 100644
index 000000000..8c0925aa9
--- /dev/null
+++ b/app/src/main/java/com/hippo/util/ResourcesUtils.java
@@ -0,0 +1,28 @@
+/*
+ * 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
+ * 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.util;
+
+import android.content.res.Resources;
+import android.util.TypedValue;
+
+public final class ResourcesUtils {
+
+    public static float getFloat(Resources resources, int resId) {
+        TypedValue outValue = new TypedValue();
+        resources.getValue(resId, outValue, true);
+        return outValue.getFloat();
+    }
+}
diff --git a/app/src/main/res/color/text_button_text.xml b/app/src/main/res/color/text_button_text.xml
new file mode 100644
index 000000000..5af7942d6
--- /dev/null
+++ b/app/src/main/res/color/text_button_text.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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
+  ~ 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.
+  -->
+<selector
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_enabled="false" android:color="@color/secondary_text_light"/>
+    <item android:color="@color/theme_primary"/>
+
+</selector>
diff --git a/app/src/main/res/drawable/ic_help_circle.xml b/app/src/main/res/drawable/ic_help_circle.xml
new file mode 100644
index 000000000..5ee7d43a0
--- /dev/null
+++ b/app/src/main/res/drawable/ic_help_circle.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ 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
+  ~ 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.
+  -->
+<vector
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:auto="http://schemas.android.com/apk/res-auto"
+    tools:targetApi="21"
+
+    auto:width="24dp"
+    auto:height="24dp"
+    auto:viewportWidth="24"
+    auto:viewportHeight="24"
+
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        auto:pathData="@string/pd_help_circle"
+        auto:fillColor="@color/primary_drawable_light"
+
+        android:pathData="@string/pd_help_circle"
+        android:fillColor="@color/primary_drawable_light"/>
+
+</vector>
diff --git a/app/src/main/res/layout/search_normal.xml b/app/src/main/res/layout/search_normal.xml
index c5e9e7c74..be59b2244 100644
--- a/app/src/main/res/layout/search_normal.xml
+++ b/app/src/main/res/layout/search_normal.xml
@@ -15,6 +15,7 @@
   -->
 <LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
@@ -32,22 +33,34 @@
         android:layout_marginBottom="@dimen/search_item_interval"
         android:text="@string/search_specify_author"/>
 
-    <com.hippo.widget.FloatLabelEditText
-        xmlns:auto="http://schemas.android.com/apk/res-auto"
-        android:id="@+id/search_text"
+    <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginBottom="@dimen/search_item_interval"
-        android:hint="@string/search_hint_no_keyword"
-        android:singleLine="true"
-        auto:labelHint="@string/keyword"
-        auto:labelAppearance="@style/TextAppearance.FloatLabelEditText.Lable"/>
+        android:orientation="horizontal">
+
+        <CheckBox
+            android:id="@+id/search_specify_tag"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/search_specify_tag"/>
+
+        <com.hippo.widget.SimpleImageView
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:layout_gravity="center_vertical"
+            android:layout_marginLeft="12dp"
+            android:src="@drawable/ic_help_circle"
+            tools:ignore="RtlHardcoded"/>
+
+    </LinearLayout>
 
     <android.support.v7.widget.SwitchCompat
         android:id="@+id/search_enable_advance"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="right"
-        android:text="@string/search_enable_advance"/>
+        android:text="@string/search_enable_advance"
+        tools:ignore="RtlHardcoded"/>
 
 </LinearLayout>
diff --git a/app/src/main/res/layout/simple_dialog.xml b/app/src/main/res/layout/simple_dialog.xml
new file mode 100644
index 000000000..19288d477
--- /dev/null
+++ b/app/src/main/res/layout/simple_dialog.xml
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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
+  ~ 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.
+  -->
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="24dp"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/title"
+            style="@style/Text.Title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+        <Space
+            android:id="@+id/space_title_message"
+            android:layout_width="match_parent"
+            android:layout_height="20dp"/>
+
+        <TextView
+            android:id="@+id/message"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+    </LinearLayout>
+
+    <!-- Single Line Button -->
+    <LinearLayout
+        android:id="@+id/buttons_single_line"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:padding="8dp"
+        android:visibility="gone">
+
+        <Space
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"/>
+
+        <TextView
+            android:id="@+id/negative"
+            style="@style/Text.Button.SingleLine"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"/>
+
+        <Space
+            android:id="@+id/space_positive_negative"
+            android:layout_width="4dp"
+            android:layout_height="wrap_content"/>
+
+        <TextView
+            android:id="@+id/positive"
+            style="@style/Text.Button.SingleLine"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"/>
+
+    </LinearLayout>
+
+</LinearLayout>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 612d702a0..3bdd398f6 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -24,6 +24,7 @@
     <string name="search_tag">标签搜索</string>
     <string name="search_image">图片搜索</string>
     <string name="search_specify_author">指定上传者</string>
+    <string name="search_specify_tag">指定标签</string>
     <string name="search_hint_no_keyword">没关键字也行</string>
     <string name="search_enable_advance">启用高级选项</string>
 
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index fb163d163..38b69f1cc 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -24,6 +24,7 @@
  -->
 <resources>
 
+    <!-- Drawable -->
     <color name="primary_drawable_light">#8a000000</color>
     <color name="secondary_drawable_light">#42000000</color>
     <color name="primary_drawable_dark">#ffffffff</color>
@@ -66,6 +67,8 @@
     <color name="primary_text_dark">#deffffff</color>
     <color name="secondary_text_dark">#61ffffff</color>
 
+    <!-- -->
+
     <color name="background_dark">#ff303030</color>
     <color name="background_light">#ffeeeeee</color>
     <color name="background_light_card">#ffe1e1e0</color>
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index cc9c74418..62b3a5c7b 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -15,6 +15,9 @@
   -->
 <resources>
 
+    <dimen name="simple_dialog_padding">16dp</dimen>
+    <dimen name="simple_dialog_fixed_width">320dp</dimen>
+
     <!-- Search Bar -->
     <dimen name="search_bar_padding_horizontal">8dp</dimen>
     <dimen name="search_bar_padding_vertical">8dp</dimen>
diff --git a/app/src/main/res/values/floats.xml b/app/src/main/res/values/floats.xml
new file mode 100644
index 000000000..12fc8c07f
--- /dev/null
+++ b/app/src/main/res/values/floats.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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
+  ~ 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.
+  -->
+<resources>
+    <item name="simple_dialog_fixed_width_percent" format="float" type="dimen">1.0</item>
+    <item name="simple_dialog_fixed_height_percent" format="float" type="dimen">0.8</item>
+</resources>
diff --git a/app/src/main/res/values/pathdata.xml b/app/src/main/res/values/pathdata.xml
index 803770212..f1942c3f7 100644
--- a/app/src/main/res/values/pathdata.xml
+++ b/app/src/main/res/values/pathdata.xml
@@ -20,5 +20,6 @@
     <string name="pd_search" translatable="false">M9.5,3A6.5,6.5 0 0,1 16,9.5C16,11.11 15.41,12.59 14.44,13.73L14.71,14H15.5L20.5,19L19,20.5L14,15.5V14.71L13.73,14.44C12.59,15.41 11.11,16 9.5,16A6.5,6.5 0 0,1 3,9.5A6.5,6.5 0 0,1 9.5,3M9.5,5C7,5 5,7 5,9.5C5,12 7,14 9.5,14C12,14 14,12 14,9.5C14,7 12,5 9.5,5Z</string>
     <string name="pd_menu" translatable="false">M3,6H21V8H3V6M3,11H21V13H3V11M3,16H21V18H3V16Z</string>
     <string name="pd_android_debug_bridge" translatable="false">M15,9A1,1 0 0,1 14,8A1,1 0 0,1 15,7A1,1 0 0,1 16,8A1,1 0 0,1 15,9M9,9A1,1 0 0,1 8,8A1,1 0 0,1 9,7A1,1 0 0,1 10,8A1,1 0 0,1 9,9M16.12,4.37L18.22,2.27L17.4,1.44L15.09,3.75C14.16,3.28 13.11,3 12,3C10.88,3 9.84,3.28 8.91,3.75L6.6,1.44L5.78,2.27L7.88,4.37C6.14,5.64 5,7.68 5,10V11H19V10C19,7.68 17.86,5.64 16.12,4.37M5,16C5,19.86 8.13,23 12,23A7,7 0 0,0 19,16V12H5V16Z</string>
+    <string name="pd_help_circle" translatable="false">M15.07,11.25L14.17,12.17C13.45,12.89 13,13.5 13,15H11V14.5C11,13.39 11.45,12.39 12.17,11.67L13.41,10.41C13.78,10.05 14,9.55 14,9C14,7.89 13.1,7 12,7A2,2 0 0,0 10,9H8A4,4 0 0,1 12,5A4,4 0 0,1 16,9C16,9.88 15.64,10.67 15.07,11.25M13,19H11V17H13M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12C22,6.47 17.5,2 12,2Z</string>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index fce917c85..49c75a52d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -41,7 +41,8 @@
     <string name="search_advance">Advance Options</string>
     <string name="search_tag">Tag Search</string>
     <string name="search_image">Image Search</string>
-    <string name="search_specify_author">Specify Uploader</string>
+    <string name="search_specify_author">Specify uploader</string>
+    <string name="search_specify_tag">Specify tag</string>
     <string name="search_hint_no_keyword">No keyword is OK</string>
     <string name="search_enable_advance">Enable advance options</string>
 
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index ee85af3ff..ef42157f7 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -83,4 +83,18 @@
         <item name="android:indeterminateDrawable">@drawable/progress_large_material</item>
     </style>
 
+    <style name="Text.Title" parent="TextAppearance.AppCompat">
+        <item name="android:textColor">@color/primary_text_light</item>
+        <item name="android:textSize">@dimen/text_large</item>
+    </style>
+
+    <style name="Text.Button.SingleLine" parent="TextAppearance.AppCompat.Medium">
+        <item name="android:textColor">@color/text_button_text</item>
+        <item name="android:minWidth">64dp</item>
+        <item name="android:minHeight">36dp</item>
+        <item name="android:paddingLeft">8dp</item>
+        <item name="android:paddingRight">8dp</item>
+        <item name="android:gravity">center</item>
+    </style>
+
 </resources>