Merge "Swap param order in registerSoftApCallback"
diff --git a/api/system-current.txt b/api/system-current.txt
index 9a81ea9..b92462d 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -4719,7 +4719,7 @@
     method public boolean isPortableHotspotSupported();
     method @RequiresPermission(android.Manifest.permission.ACCESS_WIFI_STATE) public boolean isWifiApEnabled();
     method public boolean isWifiScannerSupported();
-    method @RequiresPermission("android.permission.NETWORK_SETTINGS") public void registerSoftApCallback(@NonNull android.net.wifi.WifiManager.SoftApCallback, @Nullable java.util.concurrent.Executor);
+    method @RequiresPermission("android.permission.NETWORK_SETTINGS") public void registerSoftApCallback(@Nullable java.util.concurrent.Executor, @NonNull android.net.wifi.WifiManager.SoftApCallback);
     method @RequiresPermission("android.permission.WIFI_UPDATE_USABILITY_STATS_SCORE") public void removeOnWifiUsabilityStatsListener(@NonNull android.net.wifi.WifiManager.OnWifiUsabilityStatsListener);
     method @RequiresPermission(anyOf={"android.permission.NETWORK_SETTINGS", android.Manifest.permission.NETWORK_SETUP_WIZARD, "android.permission.NETWORK_STACK"}) public void save(@NonNull android.net.wifi.WifiConfiguration, @Nullable android.net.wifi.WifiManager.ActionListener);
     method @RequiresPermission("android.permission.WIFI_SET_DEVICE_MOBILITY_STATE") public void setDeviceMobilityState(int);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/HotspotControllerImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/HotspotControllerImpl.java
index f73ca1c..236f17e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/HotspotControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/HotspotControllerImpl.java
@@ -110,8 +110,7 @@
             mCallbacks.add(callback);
             if (mWifiManager != null) {
                 if (mCallbacks.size() == 1) {
-                    mWifiManager.registerSoftApCallback(this,
-                            new HandlerExecutor(mMainHandler));
+                    mWifiManager.registerSoftApCallback(new HandlerExecutor(mMainHandler), this);
                 } else {
                     // mWifiManager#registerSoftApCallback triggers a call to
                     // onConnectedClientsChanged on the Main Handler. In order to always update
@@ -120,6 +119,7 @@
                     mMainHandler.post(() ->
                             callback.onHotspotChanged(isHotspotEnabled(),
                                     mNumConnectedDevices));
+
                 }
             }
         }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/HotspotControllerImplTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/HotspotControllerImplTest.java
index 7496e3a..631c580 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/HotspotControllerImplTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/HotspotControllerImplTest.java
@@ -70,11 +70,11 @@
         mContext.addMockSystemService(WifiManager.class, mWifiManager);
 
         doAnswer((InvocationOnMock invocation) -> {
-            ((WifiManager.SoftApCallback) invocation.getArgument(0))
+            ((WifiManager.SoftApCallback) invocation.getArgument(1))
                     .onConnectedClientsChanged(new ArrayList<>());
             return null;
-        }).when(mWifiManager).registerSoftApCallback(any(WifiManager.SoftApCallback.class),
-                any(Executor.class));
+        }).when(mWifiManager).registerSoftApCallback(any(Executor.class),
+                any(WifiManager.SoftApCallback.class));
 
         mController = new HotspotControllerImpl(mContext, new Handler(mLooper.getLooper()));
     }
@@ -84,7 +84,7 @@
         mController.addCallback(mCallback1);
         mController.addCallback(mCallback2);
 
-        verify(mWifiManager, times(1)).registerSoftApCallback(eq(mController), any());
+        verify(mWifiManager, times(1)).registerSoftApCallback(any(), eq(mController));
     }
 
     @Test
diff --git a/wifi/java/android/net/wifi/WifiManager.java b/wifi/java/android/net/wifi/WifiManager.java
index 68355c6..2f963ef 100644
--- a/wifi/java/android/net/wifi/WifiManager.java
+++ b/wifi/java/android/net/wifi/WifiManager.java
@@ -3117,7 +3117,7 @@
 
     /**
      * Base class for soft AP callback. Should be extended by applications and set when calling
-     * {@link WifiManager#registerSoftApCallback(SoftApCallback, Handler)}.
+     * {@link WifiManager#registerSoftApCallback(Executor, SoftApCallback)}.
      *
      * @hide
      */
@@ -3197,16 +3197,16 @@
      * without the permission will trigger a {@link java.lang.SecurityException}.
      * <p>
      *
-     * @param callback Callback for soft AP events
      * @param executor The executor to execute the callbacks of the {@code executor}
      *                 object. If null, then the application's main executor will be used.
+     * @param callback Callback for soft AP events
      *
      * @hide
      */
     @SystemApi
     @RequiresPermission(android.Manifest.permission.NETWORK_SETTINGS)
-    public void registerSoftApCallback(@NonNull SoftApCallback callback,
-                                       @Nullable @CallbackExecutor Executor executor) {
+    public void registerSoftApCallback(@Nullable @CallbackExecutor Executor executor,
+                                       @NonNull SoftApCallback callback) {
         if (callback == null) throw new IllegalArgumentException("callback cannot be null");
         Log.v(TAG, "registerSoftApCallback: callback=" + callback + ", executor=" + executor);
 
diff --git a/wifi/tests/src/android/net/wifi/WifiManagerTest.java b/wifi/tests/src/android/net/wifi/WifiManagerTest.java
index cfdb6f1..4260c20 100644
--- a/wifi/tests/src/android/net/wifi/WifiManagerTest.java
+++ b/wifi/tests/src/android/net/wifi/WifiManagerTest.java
@@ -686,7 +686,7 @@
     @Test
     public void registerSoftApCallbackThrowsIllegalArgumentExceptionOnNullArgumentForCallback() {
         try {
-            mWifiManager.registerSoftApCallback(null, new HandlerExecutor(mHandler));
+            mWifiManager.registerSoftApCallback(new HandlerExecutor(mHandler), null);
             fail("expected IllegalArgumentException");
         } catch (IllegalArgumentException expected) {
         }
@@ -710,7 +710,7 @@
     @Test
     public void registerSoftApCallbackUsesMainLooperOnNullArgumentForHandler() {
         when(mContext.getMainLooper()).thenReturn(mLooper.getLooper());
-        mWifiManager.registerSoftApCallback(mSoftApCallback, null);
+        mWifiManager.registerSoftApCallback(null, mSoftApCallback);
         verify(mContext).getMainExecutor();
     }
 
@@ -719,7 +719,7 @@
      */
     @Test
     public void registerSoftApCallbackCallGoesToWifiServiceImpl() throws Exception {
-        mWifiManager.registerSoftApCallback(mSoftApCallback, new HandlerExecutor(mHandler));
+        mWifiManager.registerSoftApCallback(new HandlerExecutor(mHandler), mSoftApCallback);
         verify(mWifiService).registerSoftApCallback(any(IBinder.class),
                 any(ISoftApCallback.Stub.class), anyInt());
     }
@@ -730,7 +730,7 @@
     @Test
     public void unregisterSoftApCallbackCallGoesToWifiServiceImpl() throws Exception {
         ArgumentCaptor<Integer> callbackIdentifier = ArgumentCaptor.forClass(Integer.class);
-        mWifiManager.registerSoftApCallback(mSoftApCallback, new HandlerExecutor(mHandler));
+        mWifiManager.registerSoftApCallback(new HandlerExecutor(mHandler), mSoftApCallback);
         verify(mWifiService).registerSoftApCallback(any(IBinder.class),
                 any(ISoftApCallback.Stub.class), callbackIdentifier.capture());
 
@@ -745,7 +745,7 @@
     public void softApCallbackProxyCallsOnStateChanged() throws Exception {
         ArgumentCaptor<ISoftApCallback.Stub> callbackCaptor =
                 ArgumentCaptor.forClass(ISoftApCallback.Stub.class);
-        mWifiManager.registerSoftApCallback(mSoftApCallback, new HandlerExecutor(mHandler));
+        mWifiManager.registerSoftApCallback(new HandlerExecutor(mHandler), mSoftApCallback);
         verify(mWifiService).registerSoftApCallback(any(IBinder.class), callbackCaptor.capture(),
                 anyInt());
 
@@ -761,7 +761,7 @@
     public void softApCallbackProxyCallsOnConnectedClientsChanged() throws Exception {
         ArgumentCaptor<ISoftApCallback.Stub> callbackCaptor =
                 ArgumentCaptor.forClass(ISoftApCallback.Stub.class);
-        mWifiManager.registerSoftApCallback(mSoftApCallback, new HandlerExecutor(mHandler));
+        mWifiManager.registerSoftApCallback(new HandlerExecutor(mHandler), mSoftApCallback);
         verify(mWifiService).registerSoftApCallback(any(IBinder.class), callbackCaptor.capture(),
                 anyInt());
 
@@ -778,7 +778,7 @@
     public void softApCallbackProxyCallsOnMultipleUpdates() throws Exception {
         ArgumentCaptor<ISoftApCallback.Stub> callbackCaptor =
                 ArgumentCaptor.forClass(ISoftApCallback.Stub.class);
-        mWifiManager.registerSoftApCallback(mSoftApCallback, new HandlerExecutor(mHandler));
+        mWifiManager.registerSoftApCallback(new HandlerExecutor(mHandler), mSoftApCallback);
         verify(mWifiService).registerSoftApCallback(any(IBinder.class), callbackCaptor.capture(),
                 anyInt());
 
@@ -802,7 +802,7 @@
                 ArgumentCaptor.forClass(ISoftApCallback.Stub.class);
         TestLooper altLooper = new TestLooper();
         Handler altHandler = new Handler(altLooper.getLooper());
-        mWifiManager.registerSoftApCallback(mSoftApCallback, new HandlerExecutor(altHandler));
+        mWifiManager.registerSoftApCallback(new HandlerExecutor(altHandler), mSoftApCallback);
         verify(mWifiService).registerSoftApCallback(any(IBinder.class), callbackCaptor.capture(),
                 anyInt());
 
@@ -816,7 +816,7 @@
      */
     @Test
     public void testCorrectLooperIsUsedForSoftApCallbackHandler() throws Exception {
-        mWifiManager.registerSoftApCallback(mSoftApCallback, new HandlerExecutor(mHandler));
+        mWifiManager.registerSoftApCallback(new HandlerExecutor(mHandler), mSoftApCallback);
         mLooper.dispatchAll();
         verify(mWifiService).registerSoftApCallback(any(IBinder.class),
                 any(ISoftApCallback.Stub.class), anyInt());