Add APIs to getDefaultDialerPackage and getSystemDialerPackage

getDefaultDialerPackage is a public API and will be used by
apps to determine if they are the default dialer.

getSystemDialerPackage is a hidden API and is only used by
system components.

Also add new public string constants to allow apps to show
a dialog requesting that the user change the current default
dialer.

Bug: 20304458
Change-Id: I121d36741474c1fe171c372fb766a6c128228c9c

3 files changed, 72 insertions, 3 deletions

diff --git a/telecomm/java/android/telecom/DefaultDialerManager.java b/telecomm/java/android/telecom/DefaultDialerManager.java
index eef72fb..bf8fac6 100644
--- a/telecomm/java/android/telecom/DefaultDialerManager.java
+++ b/telecomm/java/android/telecom/DefaultDialerManager.java
@@ -87,15 +87,15 @@ public class DefaultDialerManager {
         }
 
         // No user-set dialer found, fallback to system dialer
-        ComponentName systemDialer = getTelecomManager(context).getDefaultPhoneApp();
+        String systemDialer = getTelecomManager(context).getSystemDialerPackage();
 
-        if (systemDialer == null) {
+        if (TextUtils.isEmpty(systemDialer)) {
             // No system dialer configured at build time
             return null;
         }
 
         // Verify that the system dialer has not been disabled.
-        return getComponentName(componentNames, systemDialer.getPackageName());
+        return getComponentName(componentNames, systemDialer);
     }
 
     /**
diff --git a/telecomm/java/android/telecom/TelecomManager.java b/telecomm/java/android/telecom/TelecomManager.java
index fd95327..8d6bda8 100644
--- a/telecomm/java/android/telecom/TelecomManager.java
+++ b/telecomm/java/android/telecom/TelecomManager.java
@@ -110,6 +110,28 @@ public class TelecomManager {
             "android.telecom.action.PHONE_ACCOUNT_REGISTERED";
 
     /**
+     * Activity action: Shows a dialog asking the user whether or not they want to replace the
+     * current default Dialer with the one specified in
+     * {@link #EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME}.
+     *
+     * Usage example:
+     * <pre>
+     * Intent intent = new Intent(TelecomManager.ACTION_CHANGE_DEFAULT_DIALER);
+     * intent.putExtra(TelecomManager.EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME,
+     *         getActivity().getPackageName());
+     * startActivity(intent);
+     * </pre>
+     */
+    public static final String ACTION_CHANGE_DEFAULT_DIALER =
+            "android.telecom.action.CHANGE_DEFAULT_DIALER";
+
+    /**
+     * Extra value used to provide the package name for {@link #ACTION_CHANGE_DEFAULT_DIALER}.
+     */
+    public static final String EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME =
+            "android.telecom.extra.CHANGE_DEFAULT_DIALER_PACKAGE_NAME";
+
+    /**
      * Optional extra for {@link android.content.Intent#ACTION_CALL} containing a boolean that
      * determines whether the speakerphone should be automatically turned on for an outgoing call.
      */
@@ -689,7 +711,10 @@ public class TelecomManager {
         }
     }
 
+
     /**
+     * @deprecated - Use {@link TelecomManager#getDefaultDialerPackage} to directly access
+     *         the default dialer's package name instead.
      * @hide
      */
     @SystemApi
@@ -705,6 +730,40 @@ public class TelecomManager {
     }
 
     /**
+     * Used to determine the currently selected default dialer package.
+     *
+     * @return package name for the default dialer package or null if no package has been
+     *         selected as the default dialer.
+     */
+    public String getDefaultDialerPackage() {
+        try {
+            if (isServiceConnected()) {
+                return getTelecomService().getDefaultDialerPackage();
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "RemoteException attempting to get the default dialer package name.", e);
+        }
+        return null;
+    }
+
+    /**
+     * Used to determine the dialer package that is preloaded on the system partition.
+     *
+     * @return package name for the system dialer package or null if no system dialer is preloaded.
+     * @hide
+     */
+    public String getSystemDialerPackage() {
+        try {
+            if (isServiceConnected()) {
+                return getTelecomService().getSystemDialerPackage();
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "RemoteException attempting to get the system dialer package name.", e);
+        }
+        return null;
+    }
+
+    /**
      * Return whether a given phone number is the configured voicemail number for a
      * particular phone account.
      *
diff --git a/telecomm/java/com/android/internal/telecom/ITelecomService.aidl b/telecomm/java/com/android/internal/telecom/ITelecomService.aidl
index 45b2482..49f2aad 100644
--- a/telecomm/java/com/android/internal/telecom/ITelecomService.aidl
+++ b/telecomm/java/com/android/internal/telecom/ITelecomService.aidl
@@ -137,6 +137,16 @@ interface ITelecomService {
      */
     ComponentName getDefaultPhoneApp();
 
+    /**
+     * @see TelecomServiceImpl#getDefaultDialerPackage
+     */
+    String getDefaultDialerPackage();
+
+    /**
+     * @see TelecomServiceImpl#getSystemDialerPackage
+     */
+    String getSystemDialerPackage();
+
     //
     // Internal system apis relating to call management.
     //