[A11Y][Wi-Fi] Fix multiple Spinner selected speak out at once.

When users select edit a Wi-Fi and select enterprise security,
there are multiple spinner shows with a default value.
This change does not allow TalkBack to speak out for multiple
Spinner text at one user selection.

Bug: 153272108
Test: manual
      Wi-Fi Settings -> Add network -> Security spinner
      -> WPA/WPA2/WPA3-Enterprise
      TalkBack should only speak out for the Security spinner.
Change-Id: Id9ab44e4da6d7abb5168e0ab7441ee1e226f5f68

src/com/android/settings/wifi/WifiConfigController.java

@@ -48,6 +48,7 @@ import android.view.KeyEvent;
 import android.view.View;
 import android.view.View.AccessibilityDelegate;
 import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
 import android.view.inputmethod.EditorInfo;
@@ -1020,6 +1021,8 @@ public class WifiConfigController implements TextWatcher,
             mEapUserCertSpinner.setOnItemSelectedListener(this);
             mEapIdentityView = (TextView) mView.findViewById(R.id.identity);
             mEapAnonymousView = (TextView) mView.findViewById(R.id.anonymous);
+
+            setAccessibilityDelegateForSecuritySpinners();
         }
 
         if (refreshEapMethods) {
@@ -1148,6 +1151,26 @@ public class WifiConfigController implements TextWatcher,
         }
     }
 
+    private void setAccessibilityDelegateForSecuritySpinners() {
+        final AccessibilityDelegate selectedEventBlocker = new AccessibilityDelegate() {
+            @Override
+            public void sendAccessibilityEvent(View host, int eventType) {
+                if (eventType == AccessibilityEvent.TYPE_VIEW_SELECTED) {
+                    // Ignore TYPE_VIEW_SELECTED or there will be multiple Spinner selected
+                    // information for WifiController#showSecurityFields.
+                    return;
+                }
+                super.sendAccessibilityEvent(host, eventType);
+            }
+        };
+
+        mEapMethodSpinner.setAccessibilityDelegate(selectedEventBlocker);
+        mPhase2Spinner.setAccessibilityDelegate(selectedEventBlocker);
+        mEapCaCertSpinner.setAccessibilityDelegate(selectedEventBlocker);
+        mEapOcspSpinner.setAccessibilityDelegate(selectedEventBlocker);
+        mEapUserCertSpinner.setAccessibilityDelegate(selectedEventBlocker);
+    }
+
     /**
      * EAP-PWD valid fields include
      *   identity

src/com/android/settings/wifi/WifiConfigController2.java

@@ -46,6 +46,7 @@ import android.view.KeyEvent;
 import android.view.View;
 import android.view.View.AccessibilityDelegate;
 import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
 import android.view.inputmethod.EditorInfo;
@@ -1014,6 +1015,8 @@ public class WifiConfigController2 implements TextWatcher,
             mEapUserCertSpinner.setOnItemSelectedListener(this);
             mEapIdentityView = (TextView) mView.findViewById(R.id.identity);
             mEapAnonymousView = (TextView) mView.findViewById(R.id.anonymous);
+
+            setAccessibilityDelegateForSecuritySpinners();
         }
 
         if (refreshEapMethods) {
@@ -1144,6 +1147,26 @@ public class WifiConfigController2 implements TextWatcher,
         }
     }
 
+    private void setAccessibilityDelegateForSecuritySpinners() {
+        final AccessibilityDelegate selectedEventBlocker = new AccessibilityDelegate() {
+            @Override
+            public void sendAccessibilityEvent(View host, int eventType) {
+                if (eventType == AccessibilityEvent.TYPE_VIEW_SELECTED) {
+                    // Ignore TYPE_VIEW_SELECTED or there will be multiple Spinner selected
+                    // information for WifiController2#showSecurityFields.
+                    return;
+                }
+                super.sendAccessibilityEvent(host, eventType);
+            }
+        };
+
+        mEapMethodSpinner.setAccessibilityDelegate(selectedEventBlocker);
+        mPhase2Spinner.setAccessibilityDelegate(selectedEventBlocker);
+        mEapCaCertSpinner.setAccessibilityDelegate(selectedEventBlocker);
+        mEapOcspSpinner.setAccessibilityDelegate(selectedEventBlocker);
+        mEapUserCertSpinner.setAccessibilityDelegate(selectedEventBlocker);
+    }
+
     /**
      * EAP-PWD valid fields include
      *   identity