Initialise here..
 SharedPreferences msharedpref = getSharedPreferences("msh",
                    MODE_PRIVATE);
            Editor editor = msharedpref.edit();

store data...
editor.putString("id",uida); //uida is your string to be stored
editor.commit();
finish();


fetch...
SharedPreferences prefs = this.getSharedPreferences("msh", Context.MODE_PRIVATE);
        uida = prefs.getString("id", "");

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,
                    "");

Initialise here..
 SharedPreferences msharedpref = getSharedPreferences("msh",
                    MODE_PRIVATE);
            Editor editor = msharedpref.edit();

store data...
editor.putString("id",uida); //uida is your string to be stored
editor.commit();
finish();


fetch...
SharedPreferences prefs = this.getSharedPreferences("msh", Context.MODE_PRIVATE);
        uida = prefs.getString("id", "");

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();
    }

}

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);

    }
}

写入共享首选项

SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putInt(getString(R.string.saved_high_score), newHighScore);
 editor.commit(); 

从共享首选项读取

SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
int defaultValue = getResources().getInteger(R.string.saved_high_score_default);
long highScore = sharedPref.getInt(getString(R.string.saved_high_score), defaultValue);