android sharePreference的使用

1.创建SharePreferenceUtil  工具类

public class SharePreferenceUtil {
private SharedPreferences sp;
private SharedPreferences.Editor editor;



private int userid;
private String username;


public SharePreferenceUtil(Context context, String file) {
sp = context.getSharedPreferences(file, Context.MODE_PRIVATE);
editor = sp.edit();
}

/**
* 当前所在地址
* 
* @param location
*/
public void setAddress(String location) {
editor.putString("myLocation", location);
editor.commit();
}


public String getAddress() {
return sp.getString("myLocation", "");
}

}

2.在Application中使用

public class MApplication extends FrontiaApplication {

public static final String SP_FILE_NAME = "haha";
private SharePreferenceUtil mSpUtil;

@Override
public void onCreate() {
super.onCreate();
mApplication = this;
initData();
}

private void initData() {
mSpUtil = new SharePreferenceUtil(this, SP_FILE_NAME);
}
public SharePreferenceUtil getmSpUtil() {
if (mSpUtil == null)
mSpUtil = new SharePreferenceUtil(this, SP_FILE_NAME);
return mSpUtil;
}

}

3.在activity中的使用

public class LocationService extends Activity

{

private SharePreferenceUtil spUtil;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shi_zu);
spUtil = app.getmSpUtil();

addr=“石家庄市”；

spUtil.setAddress(addr)
}

}

这样使用起来是不是很方便那！