Update MultiSelectPreference.

app/src/main/AndroidManifest.xml

@@ -8,14 +8,15 @@
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity
-            android:name=".SettingsActivity">
+        <activity android:name=".SettingsActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity android:name=".OriginalActivity" />
     </application>
 
 </manifest>

app/src/main/java/xhinliang/github/io/mdpreference/OriginalActivity.java

@@ -0,0 +1,17 @@
+package xhinliang.github.io.mdpreference;
+
+
+import android.app.Fragment;
+
+/**
+ * Created by xhinliang on 16-3-11.
+ * original
+ */
+public class OriginalActivity extends SingleFragmentActivity {
+
+
+    @Override
+    protected Fragment createFragment() {
+        return new OriginalFragment();
+    }
+}

app/src/main/java/xhinliang/github/io/mdpreference/OriginalFragment.java

@@ -0,0 +1,17 @@
+package xhinliang.github.io.mdpreference;
+
+import android.os.Bundle;
+import android.preference.PreferenceFragment;
+
+/**
+ * Created by xhinliang on 16-3-11.
+ * original
+ */
+public class OriginalFragment extends PreferenceFragment {
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        getPreferenceManager().setSharedPreferencesName(getString(R.string.app_name));
+        addPreferencesFromResource(R.xml.preference_original);
+    }
+}

app/src/main/java/xhinliang/github/io/mdpreference/SettingsActivity.java

@@ -1,13 +1,26 @@
 package xhinliang.github.io.mdpreference;
 
 import android.app.Fragment;
+import android.content.SharedPreferences;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 
+import java.util.Set;
+
+import io.github.xhinliang.mdpreference.MultiSelectListPreference;
+
 public class SettingsActivity extends SingleFragmentActivity {
 
     @Override
     protected Fragment createFragment() {
         return new SettingsFragment();
     }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        SharedPreferences preferences = getSharedPreferences(getString(R.string.app_name), MODE_PRIVATE);
+        preferences.getString("key_fff", "");
+
+    }
 }

app/src/main/res/xml/preference_original.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <PreferenceCategory android:title="Alert Settings">
+        <CheckBoxPreference
+            android:key="preference_key_remind_the_same_day11"
+            android:summary="Alert in the birthday"
+            android:title="Alert first" />
+        <SwitchPreference
+            android:key="preference_key_remind_the_same_day31"
+            android:summary="Alert in three day before birthday"
+            android:title="Alert second" />
+        <EditTextPreference
+            android:key="preference_key_remind_the_same_daywwwd21"
+            android:summary="Alert in a week before the birthday"
+            android:title="Alert third" />
+        <SwitchPreference
+            android:key="preference_key_remind_the_same_day341"
+            android:summary="Alert in two weeks before the birthday"
+            android:title="Alert fourth" />
+        <ListPreference
+            android:entries="@array/alert_time_entry"
+            android:entryValues="@array/alert_time_value"
+            android:key="preference_key_alert_timess1"
+            android:summary="Select alert time"
+            android:title="Alert time"/>
+        <MultiSelectListPreference
+            android:entries="@array/alert_time_entry"
+            android:entryValues="@array/alert_time_value"
+            android:key="preference_key_alert_timeddwexss1"
+            android:summary="Select alert time"
+            android:title="Alert time" />
+    </PreferenceCategory>
+
+</PreferenceScreen>

mdpreference/src/main/java/io/github/xhinliang/mdpreference/MultiSelectListPreference.java

@@ -111,7 +111,7 @@ private int getBit(int[] indexes) {
         return selected;
     }
 
-    private Set<Integer> getSet(int bit) {
+    private static Set<Integer> getSet(int bit) {
         Set<Integer> set = new HashSet<>();
         int temp = 1;
         for (int i = 0; i < 32; ++i) {
@@ -123,7 +123,7 @@ private Set<Integer> getSet(int bit) {
         return set;
     }
 
-    public Set<Integer> getSetByBit(int bit) {
+    public static Set<Integer> getSetByBit(int bit) {
         return getSet(bit);
     }