您可以创建自定义的SharedPreference类

public class YourPreference {   
    private static YourPreference yourPreference;
    private SharedPreferences sharedPreferences;

    public static YourPreference getInstance(Context context) {
        if (yourPreference == null) {
            yourPreference = new YourPreference(context);
        }
        return yourPreference;
    }

    private YourPreference(Context context) {
        sharedPreferences = context.getSharedPreferences("YourCustomNamedPreference",Context.MODE_PRIVATE);
    }

    public void saveData(String key,String value) {
        SharedPreferences.Editor prefsEditor = sharedPreferences.edit();
        prefsEditor .putString(key, value);
        prefsEditor.commit();           
    }

    public String getData(String key) {
        if (sharedPreferences!= null) {
           return sharedPreferences.getString(key, "");
        }
        return "";         
    }
}

你可以像这样获得你的偏好实例:

YourPreference yourPrefrence = YourPreference.getInstance(context);
yourPreference.saveData(YOUR_KEY,YOUR_VALUE);

String value = yourPreference.getData(YOUR_KEY);

创建SharedPreference和全局使用的最佳方法，你需要创建一个类，如下所示:

public class PreferenceHelperDemo {
    private final SharedPreferences mPrefs;

    public PreferenceHelperDemo(Context context) {
        mPrefs = PreferenceManager.getDefaultSharedPreferences(context);
    }

    private String PREF_Key= "Key";

    public String getKey() {
        String str = mPrefs.getString(PREF_Key, "");
        return str;
    }

    public void setKey(String pREF_Key) {
        Editor mEditor = mPrefs.edit();
        mEditor.putString(PREF_Key, pREF_Key);
        mEditor.apply();
    }

}

您还可以看看我过去为这个目的编写的示例项目。我在本地保存一个名称，并在用户请求或应用程序启动时检索它。

但是，此时最好使用commit(而不是apply)来持久化数据。更多信息请点击这里。

我只是发现上面所有的例子都太混乱了，所以我自己写了一个。如果您知道自己在做什么，那么代码片段是很好的，但是像我这样不知道的人呢?

想要一个剪切-粘贴的解决方案?好了，就是这里!

创建一个新的java文件并将其称为Keystore。然后粘贴以下代码:

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.util.Log;

public class Keystore { //Did you remember to vote up my example?
    private static Keystore store;
    private SharedPreferences SP;
    private static String filename="Keys";

private Keystore(Context context) {
    SP = context.getApplicationContext().getSharedPreferences(filename,0);
}

public static Keystore getInstance(Context context) {
    if (store == null) {
        Log.v("Keystore","NEW STORE");
        store = new Keystore(context);
    }
    return store;
}

public void put(String key, String value) {//Log.v("Keystore","PUT "+key+" "+value);
    Editor editor = SP.edit();
    editor.putString(key, value);
    editor.commit(); // Stop everything and do an immediate save!
    // editor.apply();//Keep going and save when you are not busy - Available only in APIs 9 and above.  This is the preferred way of saving.
}

public String get(String key) {//Log.v("Keystore","GET from "+key);
    return SP.getString(key, null);

}

public int getInt(String key) {//Log.v("Keystore","GET INT from "+key);
    return SP.getInt(key, 0);
}

public void putInt(String key, int num) {//Log.v("Keystore","PUT INT "+key+" "+String.valueOf(num));
    Editor editor = SP.edit();

    editor.putInt(key, num);
    editor.commit();
}


public void clear(){ // Delete all shared preferences
    Editor editor = SP.edit();

    editor.clear();
    editor.commit();
}

public void remove(){ // Delete only the shared preference that you want
    Editor editor = SP.edit();

    editor.remove(filename);
    editor.commit();
}
}

现在保存那个文件，忘了它吧。你受够了。现在回到你的活动，像这样使用它:

public class YourClass extends Activity{

private Keystore store;//Holds our key pairs

public YourSub(Context context){
    store = Keystore.getInstance(context);//Creates or Gets our key pairs.  You MUST have access to current context!

    int= store.getInt("key name to get int value");
    string = store.get("key name to get string value");

    store.putInt("key name to store int value",int_var);
    store.put("key name to store string value",string_var);
    }
}

public class Preferences {

public static final String PREF_NAME = "your preferences name";

@SuppressWarnings("deprecation")
public static final int MODE = Context.MODE_WORLD_WRITEABLE;

public static final String USER_ID = "USER_ID_NEW";
public static final String USER_NAME = "USER_NAME";

public static final String NAME = "NAME";
public static final String EMAIL = "EMAIL";
public static final String PHONE = "PHONE";
public static final String address = "address";

public static void writeBoolean(Context context, String key, boolean value) {
    getEditor(context).putBoolean(key, value).commit();
}

public static boolean readBoolean(Context context, String key,
        boolean defValue) {
    return getPreferences(context).getBoolean(key, defValue);
}

public static void writeInteger(Context context, String key, int value) {
    getEditor(context).putInt(key, value).commit();

}

public static int readInteger(Context context, String key, int defValue) {
    return getPreferences(context).getInt(key, defValue);
}

public static void writeString(Context context, String key, String value) {
    getEditor(context).putString(key, value).commit();

}

public static String readString(Context context, String key, String defValue) {
    return getPreferences(context).getString(key, defValue);
}

public static void writeFloat(Context context, String key, float value) {
    getEditor(context).putFloat(key, value).commit();
}

public static float readFloat(Context context, String key, float defValue) {
    return getPreferences(context).getFloat(key, defValue);
}

public static void writeLong(Context context, String key, long value) {
    getEditor(context).putLong(key, value).commit();
}

public static long readLong(Context context, String key, long defValue) {
    return getPreferences(context).getLong(key, defValue);
}

public static SharedPreferences getPreferences(Context context) {
    return context.getSharedPreferences(PREF_NAME, MODE);
}

public static Editor getEditor(Context context) {
    return getPreferences(context).edit();
}

}

****使用Preferences写入值使用:-****

Preferences.writeString(getApplicationContext(),
                    Preferences.NAME, "dev");

****使用Preferences读取值使用:-****

Preferences.readString(getApplicationContext(), Preferences.NAME,
                    "");

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);

    }
}