diff --git a/alertview/build.gradle b/alertview/build.gradle
index 6349e71..e5fe5ef 100644
--- a/alertview/build.gradle
+++ b/alertview/build.gradle
@@ -6,13 +6,13 @@ version = "1.0.0"
 
 android {
     compileSdkVersion 21
-    buildToolsVersion "20.0.0"
+    buildToolsVersion "21.1.2"
 
     defaultConfig {
         minSdkVersion 14
         targetSdkVersion 21
-        versionCode 1
-        versionName "1.0"
+        versionCode 2
+        versionName "1.0.1"
     }
     buildTypes {
         release {
diff --git a/alertview/src/main/java/com/bigkoo/alertview/AlertView.java b/alertview/src/main/java/com/bigkoo/alertview/AlertView.java
index bf1dc99..c63895d 100644
--- a/alertview/src/main/java/com/bigkoo/alertview/AlertView.java
+++ b/alertview/src/main/java/com/bigkoo/alertview/AlertView.java
@@ -2,6 +2,7 @@
 
 import android.app.Activity;
 import android.content.Context;
+import android.content.res.Resources;
 import android.graphics.Typeface;
 import android.view.Gravity;
 import android.view.LayoutInflater;
@@ -132,16 +133,29 @@ protected void initHeaderView(ViewGroup viewGroup){
         //标题和消息
         TextView tvAlertTitle = (TextView) viewGroup.findViewById(R.id.tvAlertTitle);
         TextView tvAlertMsg = (TextView) viewGroup.findViewById(R.id.tvAlertMsg);
+
+        //获取msg部分的bottom margin
+        int dimenMsgBottomMargin = 0;
+
         if(title != null) {
             tvAlertTitle.setText(title);
         }else{
             tvAlertTitle.setVisibility(View.GONE);
+            try {
+                //标题不可见时顶部增加padding与底部margin相同保证消息垂直居中
+                dimenMsgBottomMargin = context.getResources().getDimensionPixelSize(R.dimen.marginBottom_alert_msg);
+            }
+            catch (Resources.NotFoundException e) {
+                dimenMsgBottomMargin = 0;
+            }
         }
         if(msg != null) {
             tvAlertMsg.setText(msg);
         }else{
             tvAlertMsg.setVisibility(View.GONE);
         }
+
+        tvAlertMsg.setPadding(0, dimenMsgBottomMargin, 0, 0);
     }
     protected void initListView(){
         ListView alertButtonListView = (ListView) contentContainer.findViewById(R.id.alertButtonListView);
diff --git a/app/build.gradle b/app/build.gradle
index f78b296..2b7b372 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,14 +2,14 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 21
-    buildToolsVersion "20.0.0"
+    buildToolsVersion "21.1.2"
 
     defaultConfig {
         applicationId "com.bigkoo.alertviewdemo"
         minSdkVersion 14
         targetSdkVersion 21
-        versionCode 1
-        versionName "1.0"
+        versionCode 2
+        versionName "1.0.1"
     }
     buildTypes {
         release {
diff --git a/app/src/main/java/com/bigkoo/alertviewdemo/MainActivity.java b/app/src/main/java/com/bigkoo/alertviewdemo/MainActivity.java
index 66585c8..ac3e567 100644
--- a/app/src/main/java/com/bigkoo/alertviewdemo/MainActivity.java
+++ b/app/src/main/java/com/bigkoo/alertviewdemo/MainActivity.java
@@ -75,6 +75,10 @@ public void alertShow6(View view) {
                 this, AlertView.Style.ActionSheet, this).show();
     }
 
+    public void alertShow7(View view) {
+        new AlertView(null, "内容", null, null, new String[]{"确定"}, this, AlertView.Style.Alert, this).show();
+    }
+
     public void alertShowExt(View view) {
         mAlertViewExt.show();
     }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 3baf8f5..fde3854 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -18,6 +18,10 @@
         android:layout_marginTop="5dp"
         android:layout_height="50dp"
         android:onClick="alertShow3"/>
+    <Button android:text="hey,alert no title !!!click here~~~" android:layout_width="match_parent"
+        android:layout_marginTop="5dp"
+        android:layout_height="50dp"
+        android:onClick="alertShow7"/>
     <Button android:text="hey,actionsheet !!!click here~~~" android:layout_width="match_parent"
         android:layout_marginTop="5dp"
         android:layout_height="50dp"