高版本访问http网络和本地存储特殊文件夹

app/src/main/AndroidManifest.xml

@@ -11,7 +11,9 @@
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
-        tools:ignore="GoogleAppIndexingWarning">
+        tools:ignore="GoogleAppIndexingWarning"
+        android:requestLegacyExternalStorage="true"
+        android:networkSecurityConfig="@xml/network">
         <activity
             android:name=".ui.TabActivity"
             android:label="@string/app_name"

app/src/main/res/xml/network.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <!--解决9.0版本上无法访问http服务器的问题-->
+    <base-config cleartextTrafficPermitted="true" />
+</network-security-config>