细节调整

.idea/misc.xml

@@ -44,7 +44,7 @@
     <ConfirmationsSetting value="0" id="Add" />
     <ConfirmationsSetting value="0" id="Remove" />
   </component>
-  <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">
+  <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">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/src/main/java/com/example/arial/downloaddemo/MainActivity.java

@@ -117,6 +117,21 @@ public class MainActivity extends AppCompatActivity {
                         mUpdateHandler.obtainMessage(DOWNLOAD_PRE, fileSize).sendToTarget();
                     }
 
+                    @Override
+                    public void onStart(long startLocation) {
+                        super.onStart(startLocation);
+                    }
+
+                    @Override
+                    public void onChildResume(long resumeLocation) {
+                        super.onChildResume(resumeLocation);
+                    }
+
+                    @Override
+                    public void onChildComplete(long finishLocation) {
+                        super.onChildComplete(finishLocation);
+                    }
+
                     @Override
                     public void onProgress(long currentLocation) {
                         super.onProgress(currentLocation);