[framework] Expose enable()/disable() as public api.

Bug: 319934052
Test: compile
Merged-In: I15b7179fc228e455f9bfc6efecccd7264926d63a
Change-Id: I15b7179fc228e455f9bfc6efecccd7264926d63a
diff --git a/nfc/api/current.txt b/nfc/api/current.txt
index 6d4cc3a..cf7aea4 100644
--- a/nfc/api/current.txt
+++ b/nfc/api/current.txt
@@ -64,8 +64,10 @@
   }
 
   public final class NfcAdapter {
+    method @FlaggedApi("android.nfc.nfc_state_change") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean disable();
     method public void disableForegroundDispatch(android.app.Activity);
     method public void disableReaderMode(android.app.Activity);
+    method @FlaggedApi("android.nfc.nfc_state_change") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enable();
     method public void enableForegroundDispatch(android.app.Activity, android.app.PendingIntent, android.content.IntentFilter[], String[][]);
     method public void enableReaderMode(android.app.Activity, android.nfc.NfcAdapter.ReaderCallback, int, android.os.Bundle);
     method public static android.nfc.NfcAdapter getDefaultAdapter(android.content.Context);
diff --git a/nfc/api/system-current.txt b/nfc/api/system-current.txt
index 310130e..a33e225 100644
--- a/nfc/api/system-current.txt
+++ b/nfc/api/system-current.txt
@@ -3,9 +3,7 @@
 
   public final class NfcAdapter {
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean addNfcUnlockHandler(android.nfc.NfcAdapter.NfcUnlockHandler, String[]);
-    method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean disable();
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean disable(boolean);
-    method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enable();
     method @FlaggedApi("android.nfc.enable_nfc_reader_option") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enableReaderOption(boolean);
     method @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public boolean enableSecureNfc(boolean);
     method @FlaggedApi("android.nfc.enable_nfc_mainline") public int getAdapterState();
diff --git a/nfc/java/android/nfc/NfcAdapter.java b/nfc/java/android/nfc/NfcAdapter.java
index e43d104..06098de 100644
--- a/nfc/java/android/nfc/NfcAdapter.java
+++ b/nfc/java/android/nfc/NfcAdapter.java
@@ -1106,6 +1106,9 @@
      * {@link #ACTION_ADAPTER_STATE_CHANGED} broadcasts to find out when the
      * operation is complete.
      *
+     * <p>This API is only allowed to be called by system apps
+     * or apps which are Device Owner or Profile Owner.
+     *
      * <p>If this returns true, then either NFC is already on, or
      * a {@link #ACTION_ADAPTER_STATE_CHANGED} broadcast will be sent
      * to indicate a state transition. If this returns false, then
@@ -1113,9 +1116,8 @@
      * NFC on (for example we are in airplane mode and NFC is not
      * toggleable in airplane mode on this platform).
      *
-     * @hide
      */
-    @SystemApi
+    @FlaggedApi(Flags.FLAG_NFC_STATE_CHANGE)
     @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS)
     public boolean enable() {
         try {
@@ -1146,15 +1148,17 @@
      * {@link #ACTION_ADAPTER_STATE_CHANGED} broadcasts to find out when the
      * operation is complete.
      *
+     * <p>This API is only allowed to be called by system apps
+     * or apps which are Device Owner or Profile Owner.
+     *
      * <p>If this returns true, then either NFC is already off, or
      * a {@link #ACTION_ADAPTER_STATE_CHANGED} broadcast will be sent
      * to indicate a state transition. If this returns false, then
      * there is some problem that prevents an attempt to turn
      * NFC off.
      *
-     * @hide
      */
-    @SystemApi
+    @FlaggedApi(Flags.FLAG_NFC_STATE_CHANGE)
     @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS)
     public boolean disable() {
         try {
diff --git a/nfc/java/android/nfc/flags.aconfig b/nfc/java/android/nfc/flags.aconfig
index 6841d2b..5209caa 100644
--- a/nfc/java/android/nfc/flags.aconfig
+++ b/nfc/java/android/nfc/flags.aconfig
@@ -92,3 +92,11 @@
     description: "Enable NFC OEM extension support"
     bug: "331206243"
 }
+
+flag {
+    name: "nfc_state_change"
+    is_exported: true
+    namespace: "nfc"
+    description: "Enable nfc state change API"
+    bug: "319934052"
+}