Make IMEI editable (fix #22)

res/xml-v14/preferences.xml

@@ -3,8 +3,7 @@
 
 	<EditTextPreference
         android:key="id"
-        android:title="@string/settings_id_title"
-        android:enabled="false" />
+        android:title="@string/settings_id_title" />
     
 	<EditTextPreference
         android:key="address"

res/xml/preferences.xml

@@ -3,8 +3,7 @@
 
 	<EditTextPreference
         android:key="id"
-        android:title="@string/settings_id_title"
-        android:enabled="false" />
+        android:title="@string/settings_id_title" />
     
 	<EditTextPreference
         android:key="address"

src/org/traccar/client/TraccarActivity.java

@@ -74,6 +74,8 @@ public class TraccarActivity extends PreferenceActivity {
                 } else {
                     stopService(new Intent(TraccarActivity.this, TraccarService.class));
                 }
+            } else if (key.equals(KEY_ID)) {
+                findPreference(KEY_ID).setSummary(sharedPreferences.getString(KEY_ID, null));
             }
         }
     };
@@ -108,14 +110,15 @@ public class TraccarActivity extends PreferenceActivity {
     }
 
     private void initPreferences() {
-
         TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
         String id = telephonyManager.getDeviceId();
 
         SharedPreferences sharedPreferences = getPreferenceScreen().getSharedPreferences();
 
+        if (!sharedPreferences.contains(KEY_ID)) {
             sharedPreferences.edit().putString(KEY_ID, id).commit();
-        findPreference(KEY_ID).setSummary(id);
+        }
+        findPreference(KEY_ID).setSummary(sharedPreferences.getString(KEY_ID, id));
 
         sharedPreferences.edit().putBoolean(KEY_STATUS, isServiceRunning()).commit();
     }