Fix: Don't display the lock clock preference if its not installed

Removed duplicated codes

Change-Id: Ib7d54dfc33c6a66711799bbdf44212d287221ae9

1 files changed, 22 insertions, 0 deletions

diff --git a/src/com/android/settings/SettingsPreferenceFragment.java b/src/com/android/settings/SettingsPreferenceFragment.java
index b418826..b961bbc 100644
--- a/src/com/android/settings/SettingsPreferenceFragment.java
+++ b/src/com/android/settings/SettingsPreferenceFragment.java
@@ -23,11 +23,13 @@ import android.content.ContentResolver;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
 import android.net.Uri;
 import android.os.Bundle;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceFragment;
+import android.preference.PreferenceScreen;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.Menu;
@@ -35,6 +37,9 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.widget.Button;
 
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 /**
  * Base class for Settings fragments, with some helper functions and dialog management.
  */
@@ -307,4 +312,21 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di
         }
     }
 
+    public boolean removePreferenceIfPackageNotInstalled(Preference preference) {
+        String intentUri = ((PreferenceScreen) preference).getIntent().toUri(1);
+        Pattern pattern = Pattern.compile("component=([^/]+)/");
+        Matcher matcher = pattern.matcher(intentUri);
+
+        String packageName = matcher.find() ? matcher.group(1) : null;
+        if (packageName != null) {
+            try {
+                getPackageManager().getPackageInfo(packageName, 0);
+            } catch (NameNotFoundException e) {
+                Log.e(TAG, "package " + packageName + " not installed, hiding preference.");
+                getPreferenceScreen().removePreference(preference);
+                return true;
+            }
+        }
+        return false;
+    }
 }