From 9d6d92b33ebf1c91aed47bd759ce78a3e06afff5 Mon Sep 17 00:00:00 2001
From: Mike Lockwood <lockwood@android.com>
Date: Sun, 27 Feb 2011 09:05:10 -0800
Subject: [PATCH] InstalledAppDetails: "Clear defaults" button now clears USB
 service settings

The USB service caches the preferred activity preferences for USB devices
and accessories and allows permission to access the hardware based on the
user's selection.  The "Clear defaults" button can now be used to clear
these settings.

Change-Id: I307c118cb0ce06362e289e35bca93a47ce4631a5
Signed-off-by: Mike Lockwood <lockwood@android.com>
---
 AndroidManifest.xml                           |  1 +
 .../applications/InstalledAppDetails.java     | 21 +++++++++++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index e092bc90489..a8f978774b8 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -48,6 +48,7 @@
     <uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
     <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
     <uses-permission android:name="android.permission.STATUS_BAR" />
+    <uses-permission android:name="android.permission.MANAGE_USB" />
 
     <application android:label="@string/settings_label"
             android:icon="@mipmap/ic_launcher_settings"
diff --git a/src/com/android/settings/applications/InstalledAppDetails.java b/src/com/android/settings/applications/InstalledAppDetails.java
index 06d97fc8713..8edf2064ec8 100644
--- a/src/com/android/settings/applications/InstalledAppDetails.java
+++ b/src/com/android/settings/applications/InstalledAppDetails.java
@@ -37,13 +37,16 @@ import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.pm.PackageManager.NameNotFoundException;
+import android.hardware.usb.IUsbManager;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.Environment;
 import android.os.Handler;
+import android.os.IBinder;
 import android.os.Message;
 import android.os.RemoteException;
+import android.os.ServiceManager;
 import android.preference.PreferenceActivity;
 import android.text.format.Formatter;
 import android.util.Log;
@@ -79,6 +82,7 @@ public class InstalledAppDetails extends Fragment
     public static final String ARG_PACKAGE_NAME = "package";
 
     private PackageManager mPm;
+    private IUsbManager mUsbManager;
     private ApplicationsState mState;
     private ApplicationsState.AppEntry mAppEntry;
     private PackageInfo mPackageInfo;
@@ -305,7 +309,9 @@ public class InstalledAppDetails extends Fragment
         
         mState = ApplicationsState.getInstance(getActivity().getApplication());
         mPm = getActivity().getPackageManager();
-        
+        IBinder b = ServiceManager.getService(Context.USB_SERVICE);
+        mUsbManager = IUsbManager.Stub.asInterface(b);
+
         mCanBeOnSdCardChecker = new CanBeOnSdCardChecker();
     }
 
@@ -444,8 +450,14 @@ public class InstalledAppDetails extends Fragment
         List<IntentFilter> intentList = new ArrayList<IntentFilter>();
         mPm.getPreferredActivities(intentList, prefActList, packageName);
         if(localLOGV) Log.i(TAG, "Have "+prefActList.size()+" number of activities in prefered list");
+        boolean hasUsbDefaults = false;
+        try {
+            hasUsbDefaults = mUsbManager.hasDefaults(packageName, mAppEntry.info.uid);
+        } catch (RemoteException e) {
+            Log.e(TAG, "mUsbManager.hasDefaults", e);
+        }
         TextView autoLaunchView = (TextView)mRootView.findViewById(R.id.auto_launch);
-        if (prefActList.size() <= 0) {
+        if (prefActList.size() <= 0 && !hasUsbDefaults) {
             // Disable clear activities button
             autoLaunchView.setText(R.string.auto_launch_disable_text);
             mActivitiesButton.setEnabled(false);
@@ -784,6 +796,11 @@ public class InstalledAppDetails extends Fragment
             }
         } else if(v == mActivitiesButton) {
             mPm.clearPackagePreferredActivities(packageName);
+            try {
+                mUsbManager.clearDefaults(packageName, mAppEntry.info.uid);
+            } catch (RemoteException e) {
+                Log.e(TAG, "mUsbManager.clearDefaults", e);
+            }
             mActivitiesButton.setEnabled(false);
         } else if(v == mClearDataButton) {
             if (mAppEntry.info.manageSpaceActivityName != null) {