diff --git a/README.md b/README.md
index f119fc7..0003d53 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ allprojects {
 **Step 2. 添加项目依赖**
 ``` gradle
 dependencies {
-        compile 'com.github.Othershe:NiceDialog:1.1.2'
+        compile 'com.github.Othershe:NiceDialog:1.1.3'
 }
 ```
 **Step 3. 配置、展示dialog**
@@ -39,7 +39,7 @@ NiceDialog.init()
           .setDimAmount(0.3f)     //调节灰色背景透明度[0-1]，默认0.5f
           .setShowBottom(true)     //是否在底部显示dialog，默认flase
           .setMargin()     //dialog左右两边到屏幕边缘的距离（单位：dp），默认0dp
-          .setWidth()     //dialog宽度（单位：dp），默认为屏幕宽度
+          .setWidth()     //dialog宽度（单位：dp），默认为屏幕宽度，-1代表WRAP_CONTENT
           .setHeight()     //dialog高度（单位：dp），默认为WRAP_CONTENT
           .setOutCancel(false)     //点击dialog外是否可取消，默认true
           .setAnimStyle(R.style.EnterExitAnimation)     //设置dialog进入、退出的动画style(底部显示的dialog有默认动画)
diff --git a/app/build.gradle b/app/build.gradle
index 34e78e8..5dfd910 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -23,4 +23,5 @@ dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile project(':nicedialog')
     compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
 }
diff --git a/nicedialog/src/main/java/com/othershe/nicedialog/BaseNiceDialog.java b/nicedialog/src/main/java/com/othershe/nicedialog/BaseNiceDialog.java
index 9ac390e..610c327 100644
--- a/nicedialog/src/main/java/com/othershe/nicedialog/BaseNiceDialog.java
+++ b/nicedialog/src/main/java/com/othershe/nicedialog/BaseNiceDialog.java
@@ -106,9 +106,12 @@ private void initParams() {
             //设置dialog宽度
             if (width == 0) {
                 lp.width = Utils.getScreenWidth(getContext()) - 2 * Utils.dp2px(getContext(), margin);
+            } else if (width == -1) {
+                lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
             } else {
                 lp.width = Utils.dp2px(getContext(), width);
             }
+
             //设置dialog高度
             if (height == 0) {
                 lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
diff --git a/nicedialog/src/main/java/com/othershe/nicedialog/NiceDialog.java b/nicedialog/src/main/java/com/othershe/nicedialog/NiceDialog.java
index 69025dc..8b8125e 100644
--- a/nicedialog/src/main/java/com/othershe/nicedialog/NiceDialog.java
+++ b/nicedialog/src/main/java/com/othershe/nicedialog/NiceDialog.java
@@ -52,4 +52,10 @@ public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putParcelable("listener", convertListener);
     }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        convertListener = null;
+    }
 }