Ensure loading all apps once in ManageApplications

Some pages that extend ManageApplications always display a loading
spinner when entering them. This is caused by that it takes over
100 ms to load all apps and to sort the apps. In addition, the task of
loading all apps might be invoked twice, which caused loading time
increasing.

This CL is to make sure the task of loading all apps execute only once
in those pages that extend ManageApplications.

Bug: 222985623
Test: manual test
Change-Id: I3b15bf2eee2a4c220f42da39a29f0014cc620898

src/com/android/settings/applications/AppStateBaseBridge.java

@@ -36,6 +36,8 @@ public abstract class AppStateBaseBridge implements ApplicationsState.Callbacks
     protected final BackgroundHandler mHandler;
     protected final MainHandler mMainHandler;
 
+    private boolean mForceLoadAllApps;
+
     public AppStateBaseBridge(ApplicationsState appState, Callback callback) {
         mAppState = appState;
         mAppSession = mAppState != null ? mAppState.newSession(this) : null;
@@ -48,13 +50,22 @@ public abstract class AppStateBaseBridge implements ApplicationsState.Callbacks
         mMainHandler = new MainHandler(Looper.getMainLooper());
     }
 
-    public void resume() {
+    public void resume(boolean forceLoadAllApps) {
+        mForceLoadAllApps = forceLoadAllApps;
         mHandler.sendEmptyMessage(BackgroundHandler.MSG_LOAD_ALL);
+        if (mForceLoadAllApps) {
             mAppSession.onResume();
+        } else {
+            mAppSession.activateSession();
+        }
     }
 
     public void pause() {
+        if (mForceLoadAllApps) {
             mAppSession.onPause();
+        } else {
+            mAppSession.deactivateSession();
+        }
     }
 
     public void release() {

src/com/android/settings/applications/SpecialAppAccessPreferenceController.java

@@ -74,7 +74,7 @@ public class SpecialAppAccessPreferenceController extends BasePreferenceControll
 
     @Override
     public void onStart() {
-        mDataUsageBridge.resume();
+        mDataUsageBridge.resume(true /* forceLoadAllApps */);
     }
 
     @Override

src/com/android/settings/applications/manageapplications/ManageApplications.java

@@ -1176,7 +1176,7 @@ public class ManageApplications extends InstrumentedFragment
                 mSession.onResume();
                 mLastSortMode = sort;
                 if (mExtraInfoBridge != null) {
-                    mExtraInfoBridge.resume();
+                    mExtraInfoBridge.resume(false /* forceLoadAllApps */);
                 }
                 rebuild();
             } else {

src/com/android/settings/applications/specialaccess/premiumsms/PremiumSmsAccess.java

@@ -74,7 +74,7 @@ public class PremiumSmsAccess extends EmptyTextSettings
     @Override
     public void onResume() {
         super.onResume();
-        mSmsBackend.resume();
+        mSmsBackend.resume(true /* forceLoadAllApps */);
     }
 
     @Override

src/com/android/settings/datausage/DataSaverSummary.java

@@ -83,7 +83,7 @@ public class DataSaverSummary extends SettingsPreferenceFragment
         mDataSaverBackend.refreshAllowlist();
         mDataSaverBackend.refreshDenylist();
         mDataSaverBackend.addListener(this);
-        mDataUsageBridge.resume();
+        mDataUsageBridge.resume(true /* forceLoadAllApps */);
     }
 
     @Override

src/com/android/settings/datausage/UnrestrictedDataAccessPreferenceController.java

@@ -91,7 +91,7 @@ public class UnrestrictedDataAccessPreferenceController extends BasePreferenceCo
 
     @Override
     public void onStart() {
-        mDataUsageBridge.resume();
+        mDataUsageBridge.resume(true /* forceLoadAllApps */);
     }
 
     @Override