diff --git a/app/src/main/java/com/ik/mboxlauncher/ui/Launcher.java b/app/src/main/java/com/ik/mboxlauncher/ui/Launcher.java
index 33c0f03..aa114eb 100644
--- a/app/src/main/java/com/ik/mboxlauncher/ui/Launcher.java
+++ b/app/src/main/java/com/ik/mboxlauncher/ui/Launcher.java
@@ -44,6 +44,7 @@ import com.android.nebulasdk.bean.FavNaviBean;
 import com.android.util.GsonUtil;
 import com.android.util.IntentUtil;
 import com.android.util.LogUtils;
+import com.android.util.NetUtil;
 import com.android.util.PakageInstallUtil;
 import com.ik.mboxlauncher.R;
 import com.ik.mboxlauncher.ui.adapter.CustomAppAdapter;
@@ -322,7 +323,12 @@ public class Launcher extends FragmentActivity  implements SplashView.SplashAdLi
 
 
     }
-
+    private boolean isNetworkAvailable() {
+        int netState = NetUtil.getNetWorkState(this);
+        return netState == NetUtil.NETWORK_MOBILE
+                || netState == NetUtil.NETWORK_WIFI
+                || netState == NetUtil.NETWORK_ETHERNET;
+    }
     @Override
     protected int getFramlayoutId() {
         return R.layout.main;
@@ -949,7 +955,10 @@ public boolean onGenericMotionEvent(MotionEvent event) {
             if(isSplashEnd) {
                 ADSWindowManager.getInstance().startVideo();
             }
-            ADManager.getInstance().clearTaskInteruptQueueAndRestart();
+            if(isNetworkAvailable()){
+                ADManager.getInstance().clearApkFileByPowerDown();
+                ADManager.getInstance().clearTaskInteruptQueueAndRestart();
+            }
             setImageViewData();
             loadShortAppList();
         }
diff --git a/mylibrary/src/main/java/com/android/download/DownLoadManeger.java b/mylibrary/src/main/java/com/android/download/DownLoadManeger.java
index 6736546..d29f9ec 100644
--- a/mylibrary/src/main/java/com/android/download/DownLoadManeger.java
+++ b/mylibrary/src/main/java/com/android/download/DownLoadManeger.java
@@ -143,7 +143,9 @@ public class DownLoadManeger {
                         TaskQueue.getInstance().add(new DownLoadTaskThread(downLoadTaskBean, observer));
                     }
                 }
-
+                if(!file.exists()&&downLoadTaskBean.getCurrentProgress()==0){
+                    LogUtils.loge("power down but downloadstaskbean table remain task");
+                }
             }
         }
     }
@@ -156,13 +158,6 @@ public class DownLoadManeger {
                 if(file.exists()&&file.length()>0&&file.length()<=downLoadTaskBean.getTotal()){
                     downLoadTaskBean.setCurrentProgress(file.length());
                     DaoManager.getInstance().update(DownLoadTaskBean.class,downLoadTaskBean);
-                }else if(!file.exists()){
-                    try {
-                        boolean createFileSuccess=file.createNewFile();
-                        LogUtils.loge("下载任务但文件丢失创建文件="+createFileSuccess);
-                    } catch (IOException e) {
-                        throw new RuntimeException(e);
-                    }
                 }
             }else if(downLoadTaskBean.getCurrentProgress()!=0&&!TextUtils.isEmpty(downLoadTaskBean.getUrl())&&!TextUtils.isEmpty(downLoadTaskBean.getFileName())&&!TextUtils.isEmpty(downLoadTaskBean.getPath())){
                 File file = new File(downLoadTaskBean.getPath()+downLoadTaskBean.getFileName()+"-tmp");
diff --git a/mylibrary/src/main/java/com/android/download/DownLoadTaskThread.java b/mylibrary/src/main/java/com/android/download/DownLoadTaskThread.java
index 90510c2..6b57ec5 100644
--- a/mylibrary/src/main/java/com/android/download/DownLoadTaskThread.java
+++ b/mylibrary/src/main/java/com/android/download/DownLoadTaskThread.java
@@ -64,9 +64,9 @@ public class DownLoadTaskThread implements Runnable {
             if(currentTotal==bean.getTotal()){
                 File targFile = new File(bean.getPath(), bean.getFileName());
                 file.renameTo(targFile);//重命名
-                Thread.sleep(5000);
-                file.delete();//删除临时文件
+                Thread.sleep(3000);
                 observer.onFinish(bean, bean.getTaskId(), currentTotal);
+                file.delete();//删除临时文件
                 return;
             }
             //设置下载位置
@@ -115,10 +115,10 @@ public class DownLoadTaskThread implements Runnable {
                     LogUtils.loge("download Exception===>sleeping before");
                     File targFile = new File(bean.getPath(), bean.getFileName());
                     file.renameTo(targFile);//重命名
-                    Thread.sleep(5000);
-                    file.delete();//删除临时文件
+                    Thread.sleep(3000);
                     LogUtils.loge("download Exception===>sleeping after");
                     observer.onFinish(bean, bean.getTaskId(), currentTotal);
+                    file.delete();//删除临时文件
                 }else {
                     LogUtils.loge("下载失败");
                     if (observer != null) {
diff --git a/mylibrary/src/main/java/com/android/nebulasdk/ADManager.java b/mylibrary/src/main/java/com/android/nebulasdk/ADManager.java
index a343ce4..5de1e9a 100644
--- a/mylibrary/src/main/java/com/android/nebulasdk/ADManager.java
+++ b/mylibrary/src/main/java/com/android/nebulasdk/ADManager.java
@@ -454,7 +454,44 @@ public class ADManager implements DownLoadManeger.DownloadListener {
         DownLoadManeger.getInstance().updateDownloadTaskBeanTable();
     }
 
+    public void clearApkFileByPowerDown(){
+        List<DownLoadTaskBean> list = DaoManager.getInstance().queryList(DownLoadTaskBean.class);
+        if(list==null||list.size()==0){
+            String apkDir = FileUtil.getBakPath(mContext, 1);
+            File apkFile = new File(apkDir);
+            if(apkFile.exists()){
+                File[] files = apkFile.listFiles();
+                for (int i = 0; i < files.length; i++) {
+                    boolean isApk = files[i].getAbsolutePath().endsWith("apk");
+                    if(isApk){
+                        String apkFileName = files[i].getName();
+                        int apkFileContainIndex=-1;
+                        List<AdsInfoBean> adsInfoBeanList = DaoManager.getInstance().queryList(AdsInfoBean.class);
+                        for (int j = 0; j < adsInfoBeanList.size(); j++) {
+                            if(!TextUtils.isEmpty(adsInfoBeanList.get(j).getAppUrl())&&adsInfoBeanList.get(j).getAppUrl().contains(apkFileName)){
+                                apkFileContainIndex=j;
+                                break;
+                            }
+                        }
+                        if(apkFileContainIndex==-1){
+                            files[i].delete();
+                            LogUtils.loge("apk data rm need delete app");
+                        }else {
+                            AdsInfoBean adsInfoBean = adsInfoBeanList.get(apkFileContainIndex);
+                            if(!(PakageInstallUtil.checkAppInstall(mContext,adsInfoBean.getInfo()))||PakageInstallUtil.checkAppUpdate(mContext,adsInfoBean.getInfo(),(int) adsInfoBean.getAppVersion())){  //需要跟新app
+                                LogUtils.loge("need reinstall app");
+                                addDownloadTask(adsInfoBean,adsInfoBean.getAppUrl(),1,adsInfoBean.getAppSize());
+                            }else {
+                                LogUtils.loge("need delete app");
+                                files[i].delete();
+                            }
+                        }
 
+                    }
+                }
+            }
+        }
+    }
 
 
 }