diff --git a/.idea/misc.xml b/.idea/misc.xml
index cca2cda..7158618 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -37,7 +37,7 @@
     <ConfirmationsSetting value="0" id="Add" />
     <ConfirmationsSetting value="0" id="Remove" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/main/java/com/wuxiaolong/androidmvpsample/model/MainModel.java b/app/src/main/java/com/wuxiaolong/androidmvpsample/model/MainModel.java
index 914ec52..82841cd 100644
--- a/app/src/main/java/com/wuxiaolong/androidmvpsample/model/MainModel.java
+++ b/app/src/main/java/com/wuxiaolong/androidmvpsample/model/MainModel.java
@@ -14,7 +14,7 @@ import cz.msebera.android.httpclient.Header;
  * 业务具体处理，包括负责存储、检索、操纵数据等
  */
 public class MainModel {
-    IMainPresenter mIMainPresenter;
+    private IMainPresenter mIMainPresenter;
 
     public MainModel(IMainPresenter iMainPresenter) {
         this.mIMainPresenter = iMainPresenter;
diff --git a/app/src/main/java/com/wuxiaolong/androidmvpsample/ui/MainActivity.java b/app/src/main/java/com/wuxiaolong/androidmvpsample/ui/MainActivity.java
index 35ccdcb..d841caa 100644
--- a/app/src/main/java/com/wuxiaolong/androidmvpsample/ui/MainActivity.java
+++ b/app/src/main/java/com/wuxiaolong/androidmvpsample/ui/MainActivity.java
@@ -20,6 +20,7 @@ public class MainActivity extends AppCompatActivity implements MainView {
     private ProgressBar mProgressBar;
     private TextView text;
     private MainPresenter mMainPresenter;
+    private Handler mHandler = new Handler();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -29,24 +30,26 @@ public class MainActivity extends AppCompatActivity implements MainView {
 
     }
 
+
     private void initView() {
         text = (TextView) findViewById(R.id.text);
         mProgressBar = (ProgressBar) findViewById(R.id.mProgressBar);
         mMainPresenter = new MainPresenter(this);
         //制造延迟效果
-        new Handler().postDelayed(new Runnable() {
+        mHandler.postDelayed(new Runnable() {
             @Override
             public void run() {
                 mMainPresenter.loadData();
             }
-        }, 2000);
+        }, 5000);
 
     }
 
     @Override
     protected void onDestroy() {
-        mMainPresenter.detachView();
         super.onDestroy();
+        mHandler.removeCallbacksAndMessages(null);
+        mMainPresenter.detachView();
     }
 
     @Override