修改回退按键偶尔会出现回退页面出错的bug

app/src/main/java/com/wiipu/peopleheart/cases/CaseFragment.java

@@ -160,6 +160,7 @@ public class CaseFragment extends BaseMvpFragment {
                 }
                 if (needClearHistory) {
                     mWebView.clearHistory();
+                    needClearHistory = false;
                 }
             }
         });

app/src/main/java/com/wiipu/peopleheart/home/HomeNewFragment.java

@@ -139,6 +139,7 @@ public class HomeNewFragment extends BaseMvpFragment{
                 }
                 if (needClearHistory) {
                     mWebView.clearHistory();
+                    needClearHistory = false;
                 }
             }
         });

app/src/main/java/com/wiipu/peopleheart/info/InfoFragment.java

@@ -129,6 +129,7 @@ public class InfoFragment extends BaseMvpFragment {
                 }
                 if (needClearHistory) {
                     mWebView.clearHistory();
+                    needClearHistory = false;
                 }
             }
         });