Set fragment title and [un]register callbacks in onStart/onStop

onStart() is called when the fragment is made visible, whereas onPause()
is called when the fragment looses focus e.g. if a dialog is shown.
Thus:
- there is no need to set the activity's title everytime the fragment
regains focus,
- it is better to listen to event tasks and refresh the state of the UI
while the fragment is actually visible, listening to events until the
fragment is destroyed is useless: if an event is received between
onStop() and onDestroy(), there will be some processing but nothing will
be shown because the fragment is no longer visible.

app/src/main/java/com/topjohnwu/magisk/InstallFragment.java

@@ -98,15 +98,15 @@ public class InstallFragment extends Fragment implements CallbackHandler.EventLi
     }
 
     @Override
-    public void onResume() {
-        super.onResume();
+    public void onStart() {
+        super.onStart();
         getActivity().setTitle(R.string.install);
         CallbackHandler.register(blockDetectionDone, this);
     }
 
     @Override
-    public void onDestroy() {
-        super.onDestroy();
+    public void onStop() {
         CallbackHandler.unRegister(blockDetectionDone, this);
+        super.onStop();
     }
 }

app/src/main/java/com/topjohnwu/magisk/LogFragment.java

@@ -70,11 +70,16 @@ public class LogFragment extends Fragment {
         return view;
     }
 
+    @Override
+    public void onStart() {
+        super.onStart();
+        getActivity().setTitle(R.string.log);
+    }
+
     @Override
     public void onResume() {
         super.onResume();
         new LogManager().read();
-        getActivity().setTitle(R.string.log);
     }
 
     @Override

app/src/main/java/com/topjohnwu/magisk/MagiskHideFragment.java

@@ -93,8 +93,8 @@ public class MagiskHideFragment extends Fragment implements CallbackHandler.Even
     }
 
     @Override
-    public void onResume() {
-        super.onResume();
+    public void onStart() {
+        super.onStart();
         getActivity().setTitle(R.string.magiskhide);
         CallbackHandler.register(packageLoadDone, this);
         if (packageLoadDone.isTriggered) {
@@ -103,9 +103,9 @@ public class MagiskHideFragment extends Fragment implements CallbackHandler.Even
     }
 
     @Override
-    public void onPause() {
-        super.onPause();
+    public void onStop() {
         CallbackHandler.unRegister(packageLoadDone, this);
+        super.onStop();
     }
 
     @Override

app/src/main/java/com/topjohnwu/magisk/ModulesFragment.java

@@ -93,16 +93,16 @@ public class ModulesFragment extends Fragment implements CallbackHandler.EventLi
     }
 
     @Override
-    public void onResume() {
-        super.onResume();
+    public void onStart() {
+        super.onStart();
         CallbackHandler.register(moduleLoadDone, this);
         getActivity().setTitle(R.string.modules);
     }
 
     @Override
-    public void onDestroy() {
-        super.onDestroy();
+    public void onStop() {
         CallbackHandler.unRegister(moduleLoadDone, this);
+        super.onStop();
     }
 
     private void updateUI() {

app/src/main/java/com/topjohnwu/magisk/ReposFragment.java

@@ -109,16 +109,16 @@ public class ReposFragment extends Fragment implements CallbackHandler.EventList
     }
 
     @Override
-    public void onResume() {
-        super.onResume();
+    public void onStart() {
+        super.onStart();
         CallbackHandler.register(repoLoadDone, this);
         getActivity().setTitle(R.string.downloads);
     }
 
     @Override
-    public void onDestroy() {
-        super.onDestroy();
+    public void onStop() {
         CallbackHandler.unRegister(repoLoadDone, this);
+        super.onStop();
     }
 
     private void reloadRepos() {

app/src/main/java/com/topjohnwu/magisk/StatusFragment.java

@@ -141,8 +141,8 @@ public class StatusFragment extends Fragment implements CallbackHandler.EventLis
     }
 
     @Override
-    public void onResume() {
-        super.onResume();
+    public void onStart() {
+        super.onStart();
         CallbackHandler.register(updateCheckDone, this);
         CallbackHandler.register(safetyNetDone, this);
         if (updateCheckDone.isTriggered) {
@@ -155,10 +155,10 @@ public class StatusFragment extends Fragment implements CallbackHandler.EventLis
     }
 
     @Override
-    public void onPause() {
-        super.onPause();
+    public void onStop() {
         CallbackHandler.unRegister(updateCheckDone, this);
         CallbackHandler.unRegister(safetyNetDone, this);
+        super.onStop();
     }
 
     private static void checkMagiskInfo() {