SharedPreferences mPref;
SharedPreferences.Editor editor;

public SharedPrefrences(Context mContext) {
    mPref = mContext.getSharedPreferences(Constant.SharedPreferences, Context.MODE_PRIVATE);
    editor=mPref.edit();
}

public void setLocation(String latitude, String longitude) {
    SharedPreferences.Editor editor = mPref.edit();
    editor.putString("latitude", latitude);
    editor.putString("longitude", longitude);
    editor.apply();
}

public String getLatitude() {
    return mPref.getString("latitude", "");
}

public String getLongitude() {
    return mPref.getString("longitude", "");
}

public void setGCM(String gcm_id, String device_id) {
     editor.putString("gcm_id", gcm_id);
    editor.putString("device_id", device_id);
    editor.apply();
}

public String getGCMId() {
    return mPref.getString("gcm_id", "");
}

public String getDeviceId() {
    return mPref.getString("device_id", "");
}


public void setUserData(User user){

    Gson gson = new Gson();
    String json = gson.toJson(user);
    editor.putString("user", json);
    editor.apply();
}
public User getUserData(){
    Gson gson = new Gson();
    String json = mPref.getString("user", "");
    User user = gson.fromJson(json, User.class);
    return user;
}

public void setSocialMediaStatus(SocialMedialStatus status){

    Gson gson = new Gson();
    String json = gson.toJson(status);
    editor.putString("status", json);
    editor.apply();
}
public SocialMedialStatus getSocialMediaStatus(){
    Gson gson = new Gson();
    String json = mPref.getString("status", "");
    SocialMedialStatus status = gson.fromJson(json, SocialMedialStatus.class);
    return status;
}

在“偏好”中设置值:

// MY_PREFS_NAME - a static String variable like: 
//public static final String MY_PREFS_NAME = "MyPrefsFile";
SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();
 editor.putString("name", "Elena");
 editor.putInt("idName", 12);
 editor.apply();

从首选项检索数据:

SharedPreferences prefs = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE); 
String name = prefs.getString("name", "No name defined");//"No name defined" is the default value.
int idName = prefs.getInt("idName", 0); //0 is the default value.

更多信息:

使用共享首选项

共同的喜好

        // Create object of SharedPreferences.
        SharedPreferences sharedPref = getSharedPreferences("mypref", 0);

        //now get Editor
        SharedPreferences.Editor editor = sharedPref.edit();

        //put your value
        editor.putString("name", required_Text);

        //commits your edits
        editor.commit();

       // Its used to retrieve data
       SharedPreferences sharedPref = getSharedPreferences("mypref", 0);
       String name = sharedPref.getString("name", "");

       if (name.equalsIgnoreCase("required_Text")) {
          Log.v("Matched","Required Text Matched");
          } else {
               Log.v("Not Matched","Required Text Not Matched"); 
                 }

共享首选项是XML文件，用于以键-值对存储私有原始数据。数据类型包括布尔型、浮点型、整型、长型和字符串。

当我们想要保存一些在整个应用程序中都可以访问的数据时，一种方法是将其保存在全局变量中。但是一旦应用程序关闭，它就会消失。另一种推荐的方法是保存在SharedPreference中。保存在SharedPreferences文件中的数据在整个应用程序中都可以访问，即使在应用程序关闭或重新启动之后也可以继续保存。

SharedPreferences以键值对的方式保存数据，可以以相同的方式访问。

你可以使用两个方法创建SharedPreferences对象，

1). getsharedpreferences():使用这个方法你可以创建多个SharedPreferences。它的第一个参数名为SharedPreferences。

2). getpreferences():使用这个方法你可以创建Single SharedPreferences。

存储数据

添加变量声明/创建首选项文件

public static final String PREFERENCES_FILE_NAME = "MyAppPreferences";

检索文件名的句柄(使用getSharedPreferences)

SharedPreferences settingsfile= getSharedPreferences(PREFERENCES_FILE_NAME,0);

打开编辑器和添加键值对

SharedPreferences.Editor myeditor = settingsfile.edit(); 
myeditor.putBoolean("IITAMIYO", true); 
myeditor.putFloat("VOLUME", 0.7)
myeditor.putInt("BORDER", 2)
myeditor.putLong("SIZE", 12345678910L)
myeditor.putString("Name", "Amiyo")
myeditor.apply(); 

不要忘记如上所示使用meditor .apply()来应用/保存。

检索数据

 SharedPreferences mysettings= getSharedPreferences(PREFERENCES_FILE_NAME, 0);
IITAMIYO = mysettings.getBoolean("IITAMIYO", false); 
//returns value for the given key. 
//second parameter gives the default value if no user preference found
// (set to false in above case)
VOLUME = mysettings.getFloat("VOLUME", 0.5) 
//0.5 being the default value if no volume preferences found
// and similarly there are get methods for other data types

共享偏好是如此容易学习，所以看看这个 关于共享偏好的简单教程

import android.os.Bundle;
import android.preference.PreferenceActivity;

    public class UserSettingActivity extends PreferenceActivity {

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

      addPreferencesFromResource(R.xml.settings);

    }
}

SharedPreferences mPref;
SharedPreferences.Editor editor;

public SharedPrefrences(Context mContext) {
    mPref = mContext.getSharedPreferences(Constant.SharedPreferences, Context.MODE_PRIVATE);
    editor=mPref.edit();
}

public void setLocation(String latitude, String longitude) {
    SharedPreferences.Editor editor = mPref.edit();
    editor.putString("latitude", latitude);
    editor.putString("longitude", longitude);
    editor.apply();
}

public String getLatitude() {
    return mPref.getString("latitude", "");
}

public String getLongitude() {
    return mPref.getString("longitude", "");
}

public void setGCM(String gcm_id, String device_id) {
     editor.putString("gcm_id", gcm_id);
    editor.putString("device_id", device_id);
    editor.apply();
}

public String getGCMId() {
    return mPref.getString("gcm_id", "");
}

public String getDeviceId() {
    return mPref.getString("device_id", "");
}


public void setUserData(User user){

    Gson gson = new Gson();
    String json = gson.toJson(user);
    editor.putString("user", json);
    editor.apply();
}
public User getUserData(){
    Gson gson = new Gson();
    String json = mPref.getString("user", "");
    User user = gson.fromJson(json, User.class);
    return user;
}

public void setSocialMediaStatus(SocialMedialStatus status){

    Gson gson = new Gson();
    String json = gson.toJson(status);
    editor.putString("status", json);
    editor.apply();
}
public SocialMedialStatus getSocialMediaStatus(){
    Gson gson = new Gson();
    String json = mPref.getString("status", "");
    SocialMedialStatus status = gson.fromJson(json, SocialMedialStatus.class);
    return status;
}