Add the Allow Rotation setting to Launcher3.

This CL adds a Settings activity along with the code needed to provide
a "Allow Rotation" setting to all phones and tablets. This setting is
set to false for phones and true for tablets. On changing the setting
from unlocked to locked, the launcher (and the Settings activity)
will get locked to the orientation the user was in when he disabled
"Allow Rotation". This is consistent with how the natural rotation
feature of Android works.

Change-Id: I8a1c59d1fa0bb9262530cad96e0a9bdbab0d9344

1 files changed, 13 insertions, 4 deletions

diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index 256eba020..a9cbf6970 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -25,6 +25,7 @@ import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
@@ -67,6 +68,7 @@ import java.util.regex.Pattern;
  * Various utilities shared amongst the Launcher's classes.
  */
 public final class Utilities {
+
     private static final String TAG = "Launcher.Utilities";
 
     private static int sIconWidth = -1;
@@ -93,6 +95,8 @@ public final class Utilities {
     static final String FORCE_ENABLE_ROTATION_PROPERTY = "launcher_force_rotate";
     public static boolean sForceEnableRotation = isPropertyEnabled(FORCE_ENABLE_ROTATION_PROPERTY);
 
+    public static final String ALLOW_ROTATION_PREFERENCE_KEY = "pref_allowRotation";
+
     /**
      * Returns a FastBitmapDrawable with the icon, accurately sized.
      */
@@ -114,10 +118,15 @@ public final class Utilities {
         return Log.isLoggable(propertyName, Log.VERBOSE);
     }
 
-    public static boolean isRotationEnabled(Context c) {
-        boolean enableRotation = sForceEnableRotation ||
-                c.getResources().getBoolean(R.bool.allow_rotation);
-        return enableRotation;
+    public static boolean isAllowRotationPrefEnabled(Context context) {
+        SharedPreferences sharedPrefs = context.getSharedPreferences(LauncherFiles.ROTATION_PREF_FILE,
+                Context.MODE_MULTI_PROCESS);
+        boolean allowRotationPref = sharedPrefs.getBoolean(ALLOW_ROTATION_PREFERENCE_KEY, false);
+        return sForceEnableRotation || allowRotationPref;
+    }
+
+    public static boolean isRotationAllowedForDevice(Context context) {
+        return sForceEnableRotation || context.getResources().getBoolean(R.bool.allow_rotation);
     }
 
     /**