Fix bug where the app crashes if the orientation changes during the download

Author: burgyl

README.md

@@ -53,11 +53,19 @@ And add this provider in the application tag :
 Add the entirety of the package `selfupdate`.
 
 In the onCreate of your activity, add this to check if there is an update at the start of the application :
+
 ```java
 if (savedInstanceState == null)
     SelfUpdate.checkUpdate(this, "https://api.github.com/repos/burgyl/SelfUpdatingApp/releases/latest");
 ```
 
+or this if you support API before 21 :
+
+```java
+if (savedInstanceState == null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
+    SelfUpdate.checkUpdate(this, "https://api.github.com/repos/burgyl/SelfUpdatingApp/releases/latest");
+```
+
 You have to adapt the above URL to match your repository.
 
 ### Resources

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "ch.lburgy.selfupdatingapp"
         minSdkVersion 21
         targetSdkVersion 29
-        versionCode 12
-        versionName "1.0.11"
+        versionCode 13
+        versionName "1.0.12"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/java/ch/lburgy/selfupdatingapp/selfupdate/SelfUpdate.java

@@ -121,10 +121,11 @@ public void update(long bytesRead, long contentLength, boolean done) {
                 activity.runOnUiThread(new Runnable() {
                     @Override
                     public void run() {
-                        progressBar.setProgress(progress);
+                        if (!activity.isDestroyed())
+                            progressBar.setProgress(progress);
                     }
                 });
-                if (done) alertDialog.dismiss();
+                if (done && !activity.isDestroyed()) alertDialog.dismiss();
             }
         };
 

app/src/main/res/values/strings.xml

@@ -1,5 +1,6 @@
 <resources>
     <string name="app_name">Self Updating App</string>
+    <!-- selfupdate  -->
     <string name="dialog_update_title">Do you want to update the app ?</string>
-    <string name="dialog_downloading_title">Downloading the update</string>
+    <string name="dialog_downloading_title">Downloading the update …</string>
 </resources>