diff --git a/src/main/res/layout/layout_main.xml b/src/main/res/layout/layout_main.xml
index 7cbd6231..4909e222 100644
--- a/src/main/res/layout/layout_main.xml
+++ b/src/main/res/layout/layout_main.xml
@@ -1,15 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-                xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools"
-                android:layout_width="match_parent" android:layout_height="match_parent"
-                tools:ignore="UnknownIdInLayout" android:clipChildren="false">
+<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                                                 xmlns:app="http://schemas.android.com/apk/res-auto"
+                                                 android:layout_width="match_parent"
+                                                 android:layout_height="match_parent"
+                                                 android:clipChildren="false">
     <FrameLayout android:id="@+id/content"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
-                 android:layout_above="@+id/stat"/>
+                 app:layout_anchor="@+id/stat"
+                 app:layout_behavior="com.github.shadowsocks.widget.BottomAwareBehavior"/>
     <LinearLayout android:id="@+id/stat"
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
+                  android:layout_gravity="bottom"
                   android:elevation="4dp"
                   android:paddingStart="16dip"
                   android:paddingEnd="16dip"
@@ -19,7 +22,7 @@
                   android:background="@drawable/background_stat"
                   android:orientation="vertical"
                   android:nextFocusRight="@+id/fab"
-                  android:layout_alignParentBottom="true">
+                  app:layout_behavior="com.github.shadowsocks.widget.BottomBehavior">
         <TextView android:id="@+id/status"
                   android:textSize="16sp"
                   android:textColor="?android:attr/textColorPrimary"
@@ -71,14 +74,15 @@
                                                    android:layout_width="wrap_content"
                                                    android:layout_height="wrap_content"
                                                    android:elevation="6dp"
-                                                   android:layout_alignTop="@+id/stat"
-                                                   android:layout_alignParentEnd="true"
+                                                   app:layout_anchorGravity="end"
                                                    android:layout_marginEnd="16dp"
-                                                   android:layout_marginTop="@dimen/fab_margin_top">
+                                                   android:layout_marginBottom="@dimen/fab_margin_bottom"
+                                                   app:layout_behavior="com.github.shadowsocks.widget.BottomBehavior"
+                                                   app:layout_anchor="@+id/stat">
         <android.support.design.widget.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content"
                                                             android:layout_height="wrap_content"
                                                             app:backgroundTint="@color/material_blue_grey_700"
                                                             app:srcCompat="@drawable/ic_start_idle"
                                                             app:pressedTranslationZ="6dp" app:borderWidth="0dp" />
     </com.github.jorgecastilloprz.FABProgressCircle>
-</RelativeLayout>
+</android.support.design.widget.CoordinatorLayout>
diff --git a/src/main/res/values-v21/dimen.xml b/src/main/res/values-v21/dimen.xml
index 605379c3..4c95daeb 100644
--- a/src/main/res/values-v21/dimen.xml
+++ b/src/main/res/values-v21/dimen.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <dimen name="fab_margin_top">-28dp</dimen>
+    <dimen name="fab_margin_bottom">-28dp</dimen>
 </resources>
diff --git a/src/main/res/values/dimen.xml b/src/main/res/values/dimen.xml
index c11d2a7a..f8e782e7 100644
--- a/src/main/res/values/dimen.xml
+++ b/src/main/res/values/dimen.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <!-- TODO: Remove when this issue is fixed: https://github.com/JorgeCastilloPrz/FABProgressCircle/issues/19 -->
-    <dimen name="fab_margin_top">-44dp</dimen>
+    <dimen name="fab_margin_bottom">-44dp</dimen>
 </resources>
diff --git a/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala b/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
index c9ba1f65..11706269 100644
--- a/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
+++ b/src/main/scala/com/github/shadowsocks/GlobalConfigFragment.scala
@@ -26,7 +26,7 @@ class GlobalConfigFragment extends PreferenceFragment {
       val value = v.asInstanceOf[Boolean]
       val result = TcpFastOpen.enabled(value)
       if (result != null && result != "Success.")
-        Snackbar.make(getActivity.findViewById(android.R.id.content), result, Snackbar.LENGTH_LONG).show()
+        Snackbar.make(getActivity.findViewById(R.id.content), result, Snackbar.LENGTH_LONG).show()
       value == TcpFastOpen.sendEnabled
     })
     if (!TcpFastOpen.supported) {
diff --git a/src/main/scala/com/github/shadowsocks/MainActivity.scala b/src/main/scala/com/github/shadowsocks/MainActivity.scala
index fae18f81..921af8f5 100644
--- a/src/main/scala/com/github/shadowsocks/MainActivity.scala
+++ b/src/main/scala/com/github/shadowsocks/MainActivity.scala
@@ -105,7 +105,7 @@ class MainActivity extends Activity with ServiceBoundContext with Drawer.OnDrawe
             fab.setEnabled(true)
             changeSwitch(checked = false)
             if (m != null) {
-              val snackbar = Snackbar.make(findViewById(android.R.id.content),
+              val snackbar = Snackbar.make(findViewById(R.id.content),
                 getString(R.string.vpn_error).formatLocal(Locale.ENGLISH, m), Snackbar.LENGTH_LONG)
               if (m == getString(R.string.nat_no_root)) addDisableNatToSnackbar(snackbar)
               snackbar.show()
@@ -276,7 +276,7 @@ class MainActivity extends Activity with ServiceBoundContext with Drawer.OnDrawe
             synchronized(if (serviceStarted && testCount == id && app.isVpnEnabled) handler.post(() =>
               if (success) statusText.setText(result) else {
                 statusText.setText(R.string.connection_test_fail)
-                Snackbar.make(findViewById(android.R.id.content), result, Snackbar.LENGTH_LONG).show()
+                Snackbar.make(findViewById(R.id.content), result, Snackbar.LENGTH_LONG).show()
               }))
           }
         }
diff --git a/src/main/scala/com/github/shadowsocks/widget/BottomAwareBehavior.scala b/src/main/scala/com/github/shadowsocks/widget/BottomAwareBehavior.scala
new file mode 100644
index 00000000..1b82f7cf
--- /dev/null
+++ b/src/main/scala/com/github/shadowsocks/widget/BottomAwareBehavior.scala
@@ -0,0 +1,23 @@
+package com.github.shadowsocks.widget
+
+import android.content.Context
+import android.support.design.widget.CoordinatorLayout
+import android.util.AttributeSet
+import android.view.View
+
+/**
+  * Behavior for content area that's aware of bottom bars.
+  *
+  * @author Mygod
+  */
+class BottomAwareBehavior(context: Context, attrs: AttributeSet)
+  extends CoordinatorLayout.Behavior[View](context, attrs) {
+  override def onDependentViewChanged(parent: CoordinatorLayout, child: View, dependency: View): Boolean = {
+    val params = child.getLayoutParams.asInstanceOf[CoordinatorLayout.LayoutParams]
+    val margin = parent.getHeight - dependency.getTop - dependency.getTranslationY.toInt
+    if (params.bottomMargin != margin) {
+      params.bottomMargin = margin
+      true
+    } else false
+  }
+}
diff --git a/src/main/scala/com/github/shadowsocks/widget/BottomBehavior.scala b/src/main/scala/com/github/shadowsocks/widget/BottomBehavior.scala
new file mode 100644
index 00000000..a3a24d86
--- /dev/null
+++ b/src/main/scala/com/github/shadowsocks/widget/BottomBehavior.scala
@@ -0,0 +1,78 @@
+package com.github.shadowsocks.widget
+
+import android.animation.ValueAnimator
+import android.content.Context
+import android.support.design.widget.CoordinatorLayout
+import android.support.design.widget.Snackbar.SnackbarLayout
+import android.support.v4.view.animation.FastOutSlowInInterpolator
+import android.util.AttributeSet
+import android.view.View
+
+import scala.collection.JavaConverters._
+
+/**
+  * A SnackbarLayout-aware behavior.
+  *
+  * TODO: What happened to the animations?
+  *
+  * @author Mygod
+  */
+class BottomBehavior(context: Context, attrs: AttributeSet) extends CoordinatorLayout.Behavior[View](context, attrs) {
+  private var translationYAnimator: ValueAnimator = _
+  private var translationY: Float = _
+
+  override def layoutDependsOn(parent: CoordinatorLayout, child: View, dependency: View): Boolean = dependency match {
+    case _: SnackbarLayout => true
+    case _ => super.layoutDependsOn(parent, child, dependency)
+  }
+
+  override def onDependentViewChanged(parent: CoordinatorLayout, child: View, dependency: View): Boolean = {
+    dependency match {
+      case _: SnackbarLayout =>
+        var targetTransY = parent.getDependencies(child).asScala
+          .filter(view => view.isInstanceOf[SnackbarLayout] && parent.doViewsOverlap(child, view))
+          .map(view => view.getTranslationY - view.getHeight).reduceOption(_ min _).getOrElse(0F)
+        if (targetTransY > 0) targetTransY = 0
+        if (translationY != targetTransY) {
+          val currentTransY = child.getTranslationY
+          if (translationYAnimator != null && translationYAnimator.isRunning) translationYAnimator.cancel()
+          if (child.isShown && Math.abs(currentTransY - targetTransY) > child.getHeight * 0.667F) {
+            if (translationYAnimator == null) {
+              translationYAnimator = new ValueAnimator
+              translationYAnimator.setInterpolator(new FastOutSlowInInterpolator())
+              translationYAnimator.addUpdateListener(animation =>
+                child.setTranslationY(animation.getAnimatedValue.asInstanceOf[Float]))
+            }
+            translationYAnimator.setFloatValues(currentTransY, targetTransY)
+            translationYAnimator.start()
+          } else child.setTranslationY(targetTransY)
+          translationY = targetTransY
+        }
+        true
+      case _ => super.onDependentViewChanged(parent, child, dependency)
+    }
+  }
+
+  override def onDependentViewRemoved(parent: CoordinatorLayout, child: View, dependency: View): Unit = {
+    dependency match {
+      case _: SnackbarLayout =>
+        if (translationY != 0) {
+          val currentTransY = child.getTranslationY
+          if (translationYAnimator != null && translationYAnimator.isRunning) translationYAnimator.cancel()
+          if (child.isShown && Math.abs(currentTransY) > child.getHeight * 0.667F) {
+            if (translationYAnimator == null) {
+              translationYAnimator = new ValueAnimator
+              translationYAnimator.setInterpolator(new FastOutSlowInInterpolator())
+              translationYAnimator.addUpdateListener(animation =>
+                child.setTranslationY(animation.getAnimatedValue.asInstanceOf[Float]))
+            }
+            translationYAnimator.setFloatValues(currentTransY, 0)
+            translationYAnimator.start()
+          } else child.setTranslationY(0)
+          translationY = 0
+        }
+        parent.dispatchDependentViewsChanged(child)
+    }
+    super.onDependentViewRemoved(parent, child, dependency)
+  }
+}