blocks|key|295667|text|所以从Data+Storage上的android开发者站点|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|295668|295669|用户首选项|blockquote|295670|295671|共享首选项并不是严格意义上的保存“用户首选项”的，比如用户选择了什么铃声。如果您对为应用程序创建用户首选项感兴趣，请参阅PreferenceActivity，它为您提供了一个创建用户首选项的活动框架，该框架将自动持久化(使用共享首选项)。|style|BOLD|295672|295673|所以我认为这是可以的，因为它仅仅是持久化的键-值对。|295674|对于最初的海报来说，这并不是那么难。您只需迭代数组列表并添加项即可。在本例中，为了简单起见，我使用了一个map，但是您可以使用一个数组列表并适当地更改它：|295675|//+my+list+of+names,+icon+locations
Map<String,+String>+nameIcons+=+new+HashMap<String,+String>();
nameIcons.put("Noel",+"/location/to/noel/icon.png");
nameIcons.put("Bob",+"another/location/to/bob/icon.png");
nameIcons.put("another+name",+"last/location/icon.png");

SharedPreferences+keyValues+=+getContext().getSharedPreferences("name_icons_list",+Context.MODE_PRIVATE);
SharedPreferences.Editor+keyValuesEditor+=+keyValues.edit();

for+(String+s+:+nameIcons.keySet())+{
++++//+use+the+name+as+the+key,+and+the+icon+as+the+value
++++keyValuesEditor.putString(s,+nameIcons.get(s));
}
keyValuesEditor.commit()|code-block|syntax|javascript|295676|您可以执行类似的操作来再次读取键-值对。如果有效，请让我知道。|295677|更新：如果您使用的是API11或更高版本，有一个method可以写出字符串集|295678|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/guide/topics/data/data-storage.html|1|http://developer.android.com/reference/android/content/SharedPreferences.Editor.html#putStringSet%2528java.lang.String,%2520java.util.Set%253Cjava.lang.String%253E%2529^0|3|C|0|0|0|0|0|5|J|0|0|0|0|0|0|0|3|O|6|1|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]]|C|$]]|$1|D|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|1F|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|1G|8|@]|9|@]|C|$]]|$1|I|3|J|5|6|7|1H|8|@$A|1I|B|1J|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|1K|8|@]|9|@]|C|$]]|$1|N|3|O|5|6|7|1L|8|@]|9|@]|C|$]]|$1|P|3|Q|5|6|7|1M|8|@]|9|@]|C|$]]|$1|R|3|S|5|T|7|1N|8|@]|9|@]|C|$U|V]]|$1|W|3|X|5|6|7|1O|8|@]|9|@]|C|$]]|$1|Y|3|Z|5|6|7|1P|8|@$A|1Q|B|1R|K|L]]|9|@$A|1S|B|1T|1|1U]]|C|$]]|$1|10|3|-4|5|6|7|1V|8|@]|9|@]|C|$]]]|11|$12|$5|13|14|15|C|$16|17]]|18|$5|13|14|15|C|$16|19]]]]

So from the android developer site on <a href="http://developer.android.com/guide/topics/data/data-storage.html" rel="noreferrer">Data Storage</a>:

<blockquote>
 User Preferences
 
 Shared preferences are not strictly for saving "user preferences," such as what ringtone a user has chosen. If you're interested in creating user preferences for your application, see PreferenceActivity, which provides an Activity framework for you to create user preferences, which will be automatically persisted (using shared preferences).
</blockquote>

So I think it is okay since it is simply just key-value pairs which are persisted.

To the original poster, this is not that hard. You simply just iterate through your array list and add the items. In this example I use a map for simplicity but you can use an array list and change it appropriately:

<pre><code>// my list of names, icon locations
Map&lt;String, String&gt; nameIcons = new HashMap&lt;String, String&gt;();
nameIcons.put("Noel", "/location/to/noel/icon.png");
nameIcons.put("Bob", "another/location/to/bob/icon.png");
nameIcons.put("another name", "last/location/icon.png");

SharedPreferences keyValues = getContext().getSharedPreferences("name_icons_list", Context.MODE_PRIVATE);
SharedPreferences.Editor keyValuesEditor = keyValues.edit();

for (String s : nameIcons.keySet()) {
 // use the name as the key, and the icon as the value
 keyValuesEditor.putString(s, nameIcons.get(s));
}
keyValuesEditor.commit()
</code></pre>

You would do something similar to read the key-value pairs again. Let me know if this works.

Update: If you're using API level 11 or later, there is a <a href="http://developer.android.com/reference/android/content/SharedPreferences.Editor.html#putStringSet%28java.lang.String,%20java.util.Set%3Cjava.lang.String%3E%29" rel="noreferrer">method</a> to write out a String Set

blocks|key|294976|text|我使用下面的代码将腰围大小数组(已在array.xml中创建)加载到preferences.xml文件中。@+array+/pant_inch_size是整个数组的id。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|294977|+<ListPreference+
+android:title="choosepantsize"
+android:summary="Choose+Pant+Size"
+android:key="pantSizePref"+
+android:defaultValue="34"+
+android:entries="@array/pant_inch_size"
+android:entryValues="@array/pant_inch_size"+/>+|code-block|syntax|javascript|294978|这将用数组中的选项填充菜单。我将默认大小设置为34，因此当菜单弹出时，他们会看到已预先选择了34大小。|294979|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I loaded an array of waist sizes (already created in my array.xml) into my preferences.xml file with the code below. @array/pant_inch_size is the id of the entire array. 

<pre><code> &lt;ListPreference 
 android:title="choosepantsize"
 android:summary="Choose Pant Size"
 android:key="pantSizePref" 
 android:defaultValue="34" 
 android:entries="@array/pant_inch_size"
 android:entryValues="@array/pant_inch_size" /&gt; 
</code></pre>

This populated the menu with choices from the array. I set the default size as 34, so when the menu pops up, they see size 34 is pre-selected.

blocks|key|3018340|text|共享首选项在API11中引入了getStringSet和putStringSet方法，但这与旧版本的安卓(仍然很流行)不兼容，而且仅限于字符串集。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3018341|Android没有提供更好的方法，并且循环映射和数组来保存和加载它们并不是很容易和干净，特别是对于数组。但是一个更好的实现并不那么难：|3018342|package+com.example.utils;

import+org.json.JSONObject;
import+org.json.JSONArray;
import+org.json.JSONException;

import+android.content.Context;
import+android.content.SharedPreferences;

public+class+JSONSharedPreferences+{
++++private+static+final+String+PREFIX+=+"json";

++++public+static+void+saveJSONObject(Context+c,+String+prefName,+String+key,+JSONObject+object)+{
++++++++SharedPreferences+settings+=+c.getSharedPreferences(prefName,+0);
++++++++SharedPreferences.Editor+editor+=+settings.edit();
++++++++editor.putString(JSONSharedPreferences.PREFIX%2Bkey,+object.toString());
++++++++editor.commit();
++++}

++++public+static+void+saveJSONArray(Context+c,+String+prefName,+String+key,+JSONArray+array)+{
++++++++SharedPreferences+settings+=+c.getSharedPreferences(prefName,+0);
++++++++SharedPreferences.Editor+editor+=+settings.edit();
++++++++editor.putString(JSONSharedPreferences.PREFIX%2Bkey,+array.toString());
++++++++editor.commit();
++++}

++++public+static+JSONObject+loadJSONObject(Context+c,+String+prefName,+String+key)+throws+JSONException+{
++++++++SharedPreferences+settings+=+c.getSharedPreferences(prefName,+0);
++++++++return+new+JSONObject(settings.getString(JSONSharedPreferences.PREFIX%2Bkey,+"{}"));
++++}

++++public+static+JSONArray+loadJSONArray(Context+c,+String+prefName,+String+key)+throws+JSONException+{
++++++++SharedPreferences+settings+=+c.getSharedPreferences(prefName,+0);
++++++++return+new+JSONArray(settings.getString(JSONSharedPreferences.PREFIX%2Bkey,+"[]"));
++++}

++++public+static+void+remove(Context+c,+String+prefName,+String+key)+{
++++++++SharedPreferences+settings+=+c.getSharedPreferences(prefName,+0);
++++++++if+(settings.contains(JSONSharedPreferences.PREFIX%2Bkey))+{
++++++++++++SharedPreferences.Editor+editor+=+settings.edit();
++++++++++++editor.remove(JSONSharedPreferences.PREFIX%2Bkey);
++++++++++++editor.commit();
++++++++}
++++}
}|code-block|syntax|javascript|3018343|现在，您可以使用这五种方法在共享首选项中保存任何集合。使用JSONObject和JSONArray非常容易。您可以使用JSONArray+(Collection+copyFrom)公共构造函数从任何JSONArray集合中创建一个JSONArray，并使用JSONArray的get方法访问这些元素。|3018344|共享首选项没有大小限制(除了设备的存储限制)，所以这些方法可以在大多数常见的情况下工作，你想要在你的应用程序中快速而轻松地存储一些集合。但是JSON解析在这里进行，并且Android中的首选项在内部存储为XML，所以我建议您在处理兆字节数据时使用其他持久数据存储机制。|3018345|entityMap^0|F|C|S|C|0|0|0|T|A|14|9|1N|V|2R|9|37|9|3K|9|3U|3|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|1E|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|R|$]]

Shared preferences introduced a <code>getStringSet</code> and <code>putStringSet</code> methods in API Level 11, but that's not compatible with older versions of Android (which are still popular), and also is limited to sets of strings.

Android does not provide better methods, and looping over maps and arrays for saving and loading them is not very easy and clean, specially for arrays. But a better implementation isn't that hard:

<pre><code>package com.example.utils;

import org.json.JSONObject;
import org.json.JSONArray;
import org.json.JSONException;

import android.content.Context;
import android.content.SharedPreferences;

public class JSONSharedPreferences {
 private static final String PREFIX = "json";

 public static void saveJSONObject(Context c, String prefName, String key, JSONObject object) {
 SharedPreferences settings = c.getSharedPreferences(prefName, 0);
 SharedPreferences.Editor editor = settings.edit();
 editor.putString(JSONSharedPreferences.PREFIX+key, object.toString());
 editor.commit();
 }

 public static void saveJSONArray(Context c, String prefName, String key, JSONArray array) {
 SharedPreferences settings = c.getSharedPreferences(prefName, 0);
 SharedPreferences.Editor editor = settings.edit();
 editor.putString(JSONSharedPreferences.PREFIX+key, array.toString());
 editor.commit();
 }

 public static JSONObject loadJSONObject(Context c, String prefName, String key) throws JSONException {
 SharedPreferences settings = c.getSharedPreferences(prefName, 0);
 return new JSONObject(settings.getString(JSONSharedPreferences.PREFIX+key, "{}"));
 }

 public static JSONArray loadJSONArray(Context c, String prefName, String key) throws JSONException {
 SharedPreferences settings = c.getSharedPreferences(prefName, 0);
 return new JSONArray(settings.getString(JSONSharedPreferences.PREFIX+key, "[]"));
 }

 public static void remove(Context c, String prefName, String key) {
 SharedPreferences settings = c.getSharedPreferences(prefName, 0);
 if (settings.contains(JSONSharedPreferences.PREFIX+key)) {
 SharedPreferences.Editor editor = settings.edit();
 editor.remove(JSONSharedPreferences.PREFIX+key);
 editor.commit();
 }
 }
}
</code></pre>

Now you can save any collection in shared preferences with this five methods. Working with <code>JSONObject</code> and <code>JSONArray</code> is very easy. You can use <code>JSONArray (Collection copyFrom)</code> public constructor to make a <code>JSONArray</code> out of any Java collection and use <code>JSONArray</code>'s <code>get</code> methods to access the elements.

There is no size limit for shared preferences (besides device's storage limits), so these methods can work for most of usual cases where you want a quick and easy storage for some collection in your app. But JSON parsing happens here, and preferences in Android are stored as XMLs internally, so I recommend using other persistent data store mechanisms when you're dealing with megabytes of data.

blocks|key|3232605|text|无论API级别如何，请检查String+arrays+and+Object+arrays+in+SharedPreferences|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3232606|3232607|保存阵列|style|BOLD|3232608|public+boolean+saveArray(String[]+array,+String+arrayName,+Context+mContext)+{+++
++++SharedPreferences+prefs+=+mContext.getSharedPreferences("preferencename",+0);++
++++SharedPreferences.Editor+editor+=+prefs.edit();++
++++editor.putInt(arrayName+%2B"_size",+array.length);++
++++for(int+i=0;i<array.length;i%2B%2B)++
++++++++editor.putString(arrayName+%2B+"_"+%2B+i,+array[i]);++
++++return+editor.commit();++
}+|code-block|syntax|javascript|3232609|3232610|加载数组|3232611|public+String[]+loadArray(String+arrayName,+Context+mContext)+{++
++++SharedPreferences+prefs+=+mContext.getSharedPreferences("preferencename",+0);++
++++int+size+=+prefs.getInt(arrayName+%2B+"_size",+0);++
++++String+array[]+=+new+String[size];++
++++for(int+i=0;i<size;i%2B%2B)++
++++++++array[i]+=+prefs.getString(arrayName+%2B+"_"+%2B+i,+null);++
++++return+array;++
}++|3232612|entityMap|0|LINK|mutability|MUTABLE|url|http://sherifandroid.blogspot.com/2012/05/string-arrays-and-object-arrays-in.html^0|D|1G|0|0|0|0|4|0|0|0|0|4|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|-4|5|6|7|14|8|@]|9|@]|C|$]]|$1|E|3|F|5|6|7|15|8|@$A|16|B|17|G|H]]|9|@]|C|$]]|$1|I|3|J|5|K|7|18|8|@]|9|@]|C|$L|M]]|$1|N|3|-4|5|6|7|19|8|@]|9|@]|C|$]]|$1|O|3|P|5|6|7|1A|8|@$A|1B|B|1C|G|H]]|9|@]|C|$]]|$1|Q|3|R|5|K|7|1D|8|@]|9|@]|C|$L|M]]|$1|S|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

Regardless of the API level, Check <a href="http://sherifandroid.blogspot.com/2012/05/string-arrays-and-object-arrays-in.html">String arrays and Object arrays in SharedPreferences</a>

<hr>

SAVE ARRAY

<pre><code>public boolean saveArray(String[] array, String arrayName, Context mContext) { 
 SharedPreferences prefs = mContext.getSharedPreferences("preferencename", 0); 
 SharedPreferences.Editor editor = prefs.edit(); 
 editor.putInt(arrayName +"_size", array.length); 
 for(int i=0;i&lt;array.length;i++) 
 editor.putString(arrayName + "_" + i, array[i]); 
 return editor.commit(); 
} 
</code></pre>

<hr>

LOAD ARRAY

<pre><code>public String[] loadArray(String arrayName, Context mContext) { 
 SharedPreferences prefs = mContext.getSharedPreferences("preferencename", 0); 
 int size = prefs.getInt(arrayName + "_size", 0); 
 String array[] = new String[size]; 
 for(int i=0;i&lt;size;i++) 
 array[i] = prefs.getString(arrayName + "_" + i, null); 
 return array; 
} 
</code></pre>

blocks|key|292461|text|为了写作，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|292462|SharedPreferences+prefs+=+PreferenceManager
++++++++.getDefaultSharedPreferences(this);
JSONArray+jsonArray+=+new+JSONArray();
jsonArray.put(1);
jsonArray.put(2);
Editor+editor+=+prefs.edit();
editor.putString("key",+jsonArray.toString());
System.out.println(jsonArray.toString());
editor.commit();|code-block|syntax|javascript|292463|为了阅读，|292464|try+{
++++JSONArray+jsonArray2+=+new+JSONArray(prefs.getString("key",+"[]"));
++++for+(int+i+=+0;+i+<+jsonArray2.length();+i%2B%2B)+{
+++++++++Log.d("your+JSON+Array",+jsonArray2.getInt(i)%2B"");
++++}
}+catch+(Exception+e)+{
++++e.printStackTrace();
}|292465|做同样事情的另一种方式：|292466|//Retrieve+the+values
Gson+gson+=+new+Gson();
String+jsonText+=+Prefs.getString("key",+null);
String[]+text+=+gson.fromJson(jsonText,+String[].class);++//EDIT:+gso+to+gson


//Set+the+values
Gson+gson+=+new+Gson();
List<String>+textList+=+new+ArrayList<String>(data);
String+jsonText+=+gson.toJson(textList);
prefsEditor.putString("key",+jsonText);
prefsEditor.apply();|292467|在Java中使用GSON：|292468|public+void+saveArrayList(ArrayList<String>+list,+String+key){
++++SharedPreferences+prefs+=+PreferenceManager.getDefaultSharedPreferences(activity);
++++SharedPreferences.Editor+editor+=+prefs.edit();
++++Gson+gson+=+new+Gson();
++++String+json+=+gson.toJson(list);
++++editor.putString(key,+json);
++++editor.apply();++++

}

public+ArrayList<String>+getArrayList(String+key){
++++SharedPreferences+prefs+=+PreferenceManager.getDefaultSharedPreferences(activity);
++++Gson+gson+=+new+Gson();
++++String+json+=+prefs.getString(key,+null);
++++Type+type+=+new+TypeToken<ArrayList<String>>()+{}.getType();
++++return+gson.fromJson(json,+type);
}|292469|在Kotlin中使用GSON|292470|fun+saveArrayList(list:+java.util.ArrayList<String?>?,+key:+String?)+{
++++val+prefs:+SharedPreferences+=+PreferenceManager.getDefaultSharedPreferences(activity)
++++val+editor:+Editor+=+prefs.edit()
++++val+gson+=+Gson()
++++val+json:+String+=+gson.toJson(list)
++++editor.putString(key,+json)
++++editor.apply()
}

fun+getArrayList(key:+String?):+java.util.ArrayList<String?>?+{
++++val+prefs:+SharedPreferences+=+PreferenceManager.getDefaultSharedPreferences(activity)
++++val+gson+=+Gson()
++++val+json:+String+=+prefs.getString(key,+null)
++++val+type:+Type+=+object+:+TypeToken<java.util.ArrayList<String?>?>()+{}.getType()
++++return+gson.fromJson(json,+type)
}|292471|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

To write,
<pre><code>SharedPreferences prefs = PreferenceManager
 .getDefaultSharedPreferences(this);
JSONArray jsonArray = new JSONArray();
jsonArray.put(1);
jsonArray.put(2);
Editor editor = prefs.edit();
editor.putString(&quot;key&quot;, jsonArray.toString());
System.out.println(jsonArray.toString());
editor.commit();
</code></pre>
To Read,
<pre><code>try {
 JSONArray jsonArray2 = new JSONArray(prefs.getString(&quot;key&quot;, &quot;[]&quot;));
 for (int i = 0; i &lt; jsonArray2.length(); i++) {
 Log.d(&quot;your JSON Array&quot;, jsonArray2.getInt(i)+&quot;&quot;);
 }
} catch (Exception e) {
 e.printStackTrace();
}
</code></pre>
Other way to do same:
<pre><code>//Retrieve the values
Gson gson = new Gson();
String jsonText = Prefs.getString(&quot;key&quot;, null);
String[] text = gson.fromJson(jsonText, String[].class); //EDIT: gso to gson


//Set the values
Gson gson = new Gson();
List&lt;String&gt; textList = new ArrayList&lt;String&gt;(data);
String jsonText = gson.toJson(textList);
prefsEditor.putString(&quot;key&quot;, jsonText);
prefsEditor.apply();
</code></pre>
Using GSON in Java:
<pre><code>public void saveArrayList(ArrayList&lt;String&gt; list, String key){
 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
 SharedPreferences.Editor editor = prefs.edit();
 Gson gson = new Gson();
 String json = gson.toJson(list);
 editor.putString(key, json);
 editor.apply(); 

}

public ArrayList&lt;String&gt; getArrayList(String key){
 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
 Gson gson = new Gson();
 String json = prefs.getString(key, null);
 Type type = new TypeToken&lt;ArrayList&lt;String&gt;&gt;() {}.getType();
 return gson.fromJson(json, type);
}
</code></pre>
Using GSON in Kotlin
<pre><code>fun saveArrayList(list: java.util.ArrayList&lt;String?&gt;?, key: String?) {
 val prefs: SharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity)
 val editor: Editor = prefs.edit()
 val gson = Gson()
 val json: String = gson.toJson(list)
 editor.putString(key, json)
 editor.apply()
}

fun getArrayList(key: String?): java.util.ArrayList&lt;String?&gt;? {
 val prefs: SharedPreferences = PreferenceManager.getDefaultSharedPreferences(activity)
 val gson = Gson()
 val json: String = prefs.getString(key, null)
 val type: Type = object : TypeToken&lt;java.util.ArrayList&lt;String?&gt;?&gt;() {}.getType()
 return gson.fromJson(json, type)
}
</code></pre>

blocks|key|295751|text|使用Gson+google库1实现复杂对象存储的简单模式|type|unstyled|depth|inlineStyleRanges|entityRanges|data|295752|public+static+void+setComplexObject(Context+ctx,+ComplexObject+obj){
++++SharedPreferences+preferences+=+PreferenceManager.getDefaultSharedPreferences(ctx);
++++SharedPreferences.Editor+editor+=+preferences.edit();
++++editor.putString("COMPLEX_OBJECT",new+Gson().toJson(obj));+
++++editor.commit();
}

public+static+ComplexObject+getComplexObject+(Context+ctx){
++++SharedPreferences+preferences+=+PreferenceManager.getDefaultSharedPreferences(ctx);
++++String+sobj+=+preferences.getString("COMPLEX_OBJECT",+"");
++++if(sobj.equals(""))return+null;
++++else+return+new+Gson().fromJson(sobj,+ComplexObject.class);
}|code-block|syntax|javascript|295753|1|offset|length|295754|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/google-gson/^0|0|0|0|1|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Easy mode for complex object storage with using Gson google library [1]

<pre><code>public static void setComplexObject(Context ctx, ComplexObject obj){
 SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ctx);
 SharedPreferences.Editor editor = preferences.edit();
 editor.putString("COMPLEX_OBJECT",new Gson().toJson(obj)); 
 editor.commit();
}

public static ComplexObject getComplexObject (Context ctx){
 SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ctx);
 String sobj = preferences.getString("COMPLEX_OBJECT", "");
 if(sobj.equals(""))return null;
 else return new Gson().fromJson(sobj, ComplexObject.class);
}
</code></pre>

[1] <a href="http://code.google.com/p/google-gson/" rel="noreferrer">http://code.google.com/p/google-gson/</a>

blocks|key|3232697|text|简单的方法是，将其转换为JSON字符串，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3232698|Gson+gson+=+new+Gson();
String+json+=+gson.toJson(myObj);|code-block|syntax|javascript|3232699|然后将该字符串存储在共享首选项中。一旦你需要它，只需从共享首选项中获取字符串，并将其转换回JSONArray或JSONObject(根据您的要求)。|3232700|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

The Simple way is, to convert it to JSON String as below example:

<pre><code>Gson gson = new Gson();
String json = gson.toJson(myObj);
</code></pre>

Then store the string in the shared preferences.
Once you need it just get string from shared preferences and convert back to JSONArray or JSONObject(as per your requirement.)

blocks|key|3232715|text|对于写作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3232716|+private+<T>+void+storeData(String+key,+T+data)+{
++++ByteArrayOutputStream+serializedData+=+new+ByteArrayOutputStream();

++++try+{
++++++++ObjectOutputStream+serializer+=+new+ObjectOutputStream(serializedData);
++++++++serializer.writeObject(data);
++++}+catch+(IOException+e)+{
++++++++e.printStackTrace();
++++}

++++SharedPreferences+sharedPreferences+=+getSharedPreferences(TAG,+0);
++++SharedPreferences.Editor+edit+=+sharedPreferences.edit();

++++edit.putString(key,+Base64.encodeToString(serializedData.toByteArray(),+Base64.DEFAULT));
++++edit.commit();
}|code-block|syntax|javascript|3232717|阅读：|3232718|private+<T>+T+getStoredData(String+key)+{
++++SharedPreferences+sharedPreferences+=+getSharedPreferences(TAG,+0);
++++String+serializedData+=+sharedPreferences.getString(key,+null);
++++T+storedData+=+null;
++++try+{
++++++++ByteArrayInputStream+input+=+new+ByteArrayInputStream(Base64.decode(serializedData,+Base64.DEFAULT));
++++++++ObjectInputStream+inputStream+=+new+ObjectInputStream(input);
++++++++storedData+=+(T)inputStream.readObject();
++++}+catch+(IOException%7CClassNotFoundException%7Cjava.lang.IllegalArgumentException+e)+{
++++++++e.printStackTrace();
++++}

++++return+storedData;
}|3232719|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

For writing:

<pre><code> private &lt;T&gt; void storeData(String key, T data) {
 ByteArrayOutputStream serializedData = new ByteArrayOutputStream();

 try {
 ObjectOutputStream serializer = new ObjectOutputStream(serializedData);
 serializer.writeObject(data);
 } catch (IOException e) {
 e.printStackTrace();
 }

 SharedPreferences sharedPreferences = getSharedPreferences(TAG, 0);
 SharedPreferences.Editor edit = sharedPreferences.edit();

 edit.putString(key, Base64.encodeToString(serializedData.toByteArray(), Base64.DEFAULT));
 edit.commit();
}
</code></pre>

For reading:

<pre><code>private &lt;T&gt; T getStoredData(String key) {
 SharedPreferences sharedPreferences = getSharedPreferences(TAG, 0);
 String serializedData = sharedPreferences.getString(key, null);
 T storedData = null;
 try {
 ByteArrayInputStream input = new ByteArrayInputStream(Base64.decode(serializedData, Base64.DEFAULT));
 ObjectInputStream inputStream = new ObjectInputStream(input);
 storedData = (T)inputStream.readObject();
 } catch (IOException|ClassNotFoundException|java.lang.IllegalArgumentException e) {
 e.printStackTrace();
 }

 return storedData;
}
</code></pre>

blocks|key|3018484|text|这是我成功使用的共享首选项代码，请参阅此link|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3018485|++public+class+MainActivity+extends+Activity+{

private+static+final+int+RESULT_SETTINGS+=+1;
Button+button;
public+String+a="dd";

@Override
public+void+onCreate(Bundle+savedInstanceState)+{
super.onCreate(savedInstanceState);

+button+=+(Button)+findViewById(R.id.btnoptions);


setContentView(R.layout.activity_main);

++//+showUserSettings();
++}

@Override
public+boolean+onCreateOptionsMenu(Menu+menu)+{
getMenuInflater().inflate(R.menu.settings,+menu);
return+true;
+}

@Override
public+boolean+onOptionsItemSelected(MenuItem+item)+{
switch+(item.getItemId())+{

case+R.id.menu_settings:
+Intent+i+=+new+Intent(this,+UserSettingActivity.class);
+startActivityForResult(i,+RESULT_SETTINGS);
+break;

+}

return+true;
}

@Override
+protected+void+onActivityResult(int+requestCode,+int+resultCode,+Intent+data)+++++{
++super.onActivityResult(requestCode,+resultCode,+data);

+switch+(requestCode)+{
+case+RESULT_SETTINGS:
+showUserSettings();
+break;

+}+

++}

++private+void+showUserSettings()+{
+SharedPreferences+sharedPrefs+=+PreferenceManager
.getDefaultSharedPreferences(this);

+StringBuilder+builder+=+new+StringBuilder();

+builder.append("\n+Pet:+"
++%2B+sharedPrefs.getString("prefpetname",+"NULL"));

+builder.append("\n+Address:"
+%2B+sharedPrefs.getString("prefaddress","NULL"+));

+builder.append("\n+Your+name:+"
+%2B+sharedPrefs.getString("prefname",+"NULL"));

+TextView+settingsTextView+=+(TextView)+findViewById(R.id.textUserSettings);


++settingsTextView.setText(builder.toString());


++++}

+++}|code-block|syntax|javascript|3018486|祝你编码愉快！|3018487|entityMap|0|LINK|mutability|MUTABLE|url|http://programondaspot.blogspot.com/2015/08/android-sharedpreferences-example.html^0|K|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

This is the shared preferences code i use successfully, Refer this <a href="http://programondaspot.blogspot.com/2015/08/android-sharedpreferences-example.html" rel="nofollow">link</a>:

<pre><code> public class MainActivity extends Activity {

private static final int RESULT_SETTINGS = 1;
Button button;
public String a="dd";

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

 button = (Button) findViewById(R.id.btnoptions);


setContentView(R.layout.activity_main);

 // showUserSettings();
 }

@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.settings, menu);
return true;
 }

@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {

case R.id.menu_settings:
 Intent i = new Intent(this, UserSettingActivity.class);
 startActivityForResult(i, RESULT_SETTINGS);
 break;

 }

return true;
}

@Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 super.onActivityResult(requestCode, resultCode, data);

 switch (requestCode) {
 case RESULT_SETTINGS:
 showUserSettings();
 break;

 } 

 }

 private void showUserSettings() {
 SharedPreferences sharedPrefs = PreferenceManager
.getDefaultSharedPreferences(this);

 StringBuilder builder = new StringBuilder();

 builder.append("\n Pet: "
 + sharedPrefs.getString("prefpetname", "NULL"));

 builder.append("\n Address:"
 + sharedPrefs.getString("prefaddress","NULL" ));

 builder.append("\n Your name: "
 + sharedPrefs.getString("prefname", "NULL"));

 TextView settingsTextView = (TextView) findViewById(R.id.textUserSettings);


 settingsTextView.setText(builder.toString());


 }

 }
</code></pre>

HAPPY CODING!

blocks|key|3018514|text|您可以使用putStringSet|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3018515|这允许您将HashSet保存在您的首选项中，就像这样：|3018516|保存|3018517|Set<String>+values;

SharedPreferences+sharedPref+=+
++++mContext.getSharedPreferences(PREF_KEY,+Context.MODE_PRIVATE);

Editor+editor+=+sharedPref.edit();

editor.putStringSet("YOUR_KEY",+values);
editor.apply();|code-block|syntax|javascript|3018518|检索|3018519|SharedPreferences+sharedPref+=+
++++mContext.getSharedPreferences(PREF_KEY,+Context.MODE_PRIVATE);

Editor+editor+=+sharedPref.edit();

Set<String>+newList+=+editor.getStringSet("YOUR_KEY",+null);|3018520|putStringSet只允许一个集合，这是一个无序列表。|3018521|entityMap^0|5|C|0|0|0|2|0|0|0|2|0|0|O|2|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|J|3|K|5|L|7|13|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|L|7|17|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|V|$]]

You can use putStringSet

This allow you to save a HashSet in your preferences, just like this:

Save

<pre><code>Set&lt;String&gt; values;

SharedPreferences sharedPref = 
 mContext.getSharedPreferences(PREF_KEY, Context.MODE_PRIVATE);

Editor editor = sharedPref.edit();

editor.putStringSet("YOUR_KEY", values);
editor.apply();
</code></pre>

Retrive

<pre><code>SharedPreferences sharedPref = 
 mContext.getSharedPreferences(PREF_KEY, Context.MODE_PRIVATE);

Editor editor = sharedPref.edit();

Set&lt;String&gt; newList = editor.getStringSet("YOUR_KEY", null);
</code></pre>

The putStringSet allow just a Set and this is an unordered list.

blocks|key|297766|text|当我被这个问题困扰的时候，我得到了序列化的解决方案，你可以序列化你的字符串，但我也想出了一个办法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|297767|只有在你还没有读过序列化的时候才读这篇文章，否则就去看看我的hack吧|offset|length|style|BOLD|297768|为了按顺序存储数组项，我们可以将数组序列化为单个字符串(通过创建一个新的类ObjectSerializer+(从-+www.androiddevcourse.com/objectserializer.html复制代码，替换除包名以外的所有内容))|297769|在共享首选项中输入数据：|297770|📷|atomic|297771|​|297772|第38行的其余代码-|297773|297774|297775|将下一个参数放在这里，这样如果没有检索到数据，它将返回空数组(我们不能放入空字符串，因为容器/变量是一个数组而不是字符串)|297776|来到我的黑客:-|297777|通过在每一项之间使用一些符号将数组的内容合并为一个字符串，然后在检索时使用该符号对其进行拆分。因为使用共享首选项，添加和检索字符串很容易。如果你担心拆分，只需查看“在java中拆分字符串”。|297778|注意:如果你的数组的内容是像字符串，整型，浮点数等这样的原始类型，它就能很好地工作。它将适用于有它自己的结构的复杂数组，假设是一个电话簿，但是合并和拆分会变得有点复杂。|297779|PS:我是android的新手，所以不知道这是不是一个好的技巧，所以让我知道如果你找到更好的技巧。|297780|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/a4a1be6a61ddbd3fc7321fe50242325c.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/c3b1c995a70d81651a20f78b2048bd8c.png^0|0|0|Y|0|0|0|0|1|0|0|0|0|0|1|1|0|0|0|0|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1G|8|@$D|1H|E|1I|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|1J|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|1K|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1L|8|@]|9|@$D|1M|E|1N|1|1O]]|A|$]]|$1|O|3|P|5|6|7|1P|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|S|3|M|5|N|7|1R|8|@]|9|@$D|1S|E|1T|1|1U]]|A|$]]|$1|T|3|P|5|6|7|1V|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1W|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1X|8|@$D|1Y|E|1Z|F|G]]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|20|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|21|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|22|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|23|8|@]|9|@]|A|$]]]|15|$16|$5|17|18|19|A|$1A|1B|1C|-4]]|1D|$5|17|18|19|A|$1A|1E|1C|-4]]]]

When I was bugged with this, I got the serializing solution where, you can serialize your string, But I came up with a hack as well.

Read this only if you haven't read about serializing, else go down and read my hack

In order to store array items in order, we can serialize the array into a single string (by making a new class ObjectSerializer (copy the code from – www.androiddevcourse.com/objectserializer.html , replace everything except the package name))

Entering data in Shared preference :
<a href="https://i.stack.imgur.com/njySo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/njySo.png" alt="enter image description here"></a>

the rest of the code on line 38 - <a href="https://i.stack.imgur.com/xlGjb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xlGjb.png" alt="enter image description here"></a>

Put the next arg as this, so that if data is not retrieved it will return empty array(we cant put empty string coz the container/variable is an array not string)

Coming to my Hack :-

Merge contents of array into a single string by having some symbol in between each item and then split it using that symbol when retrieving it. Coz adding and retrieving String is easy with shared preferences.
If you are worried about splitting just look up "splitting a string in java".

[Note: This works fine if the contents of your array is of primitive kind like string, int, float, etc. It will work for complex arrays which have its own structure, suppose a phone book, but the merging and splitting would become a bit complex. ]

PS: I am new to android, so don't know if it is a good hack, so lemme know if you find better hacks.

I have an <code>ArrayList</code> of objects that have a name and an icon pointer and I want to save it in <code>SharedPreferences</code>. How can I do?

NOTE: I don't want to use Database

Is it possible to add an array or object to SharedPreferences on Android

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个对象的ArrayList，它有一个名称和一个图标指针，我想把它保存在SharedPreferences中。我该怎么做呢？备注:我不想使用数据库

问是否可以将数组或对象添加到Android上的SharedPreferences
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问是否可以将数组或对象添加到Android上的SharedPreferencesEN