Android 共享参数 SharedPreferences

完成共享参数的读写

public class sharedpreference {

    private context context;

    public sharedpreference(context context) {
        // todo auto-generated constructor stub

        this.context = context;
    }

    public boolean savemessage(string name, string passwd) {

        boolean flag = false;

        // 自动保存成 userinfo.xml
        sharedpreferences sharedpreferences = context.getsharedpreferences("userinfo", context.mode_private);

        // 对数据进行编辑
        sharedpreferences.editor editor = sharedpreferences.edit();
        editor.putstring("name", name);
        editor.putstring("passwd", passwd);
        // 将数据持久化到存储介质中
        flag = editor.commit();
        return flag;
    }

    public map<string, object> getmessage() {
        map<string, object> map = new hashmap<string, object>();
        sharedpreferences sharedpreferences = context.getsharedpreferences("userinfo", context.mode_private);

        string name = sharedpreferences.getstring("name", "");
        string passwd = sharedpreferences.getstring("passwd", "");

        map.put("name", name);
        map.put("passwd", passwd);

        return map;
    }
}

编写测试函数

    private button button1;
    private button button2;

    @override
    protected void oncreate(bundle savedinstancestate) {
        super.oncreate(savedinstancestate);
        setcontentview(r.layout.activity_main);

        button1 = (button) findviewbyid(r.id.button1);

        button1.setonclicklistener(new view.onclicklistener() {

            @override
            public void onclick(view v) {
                // todo auto-generated method stub

                sharedpreference sharedpreference = new sharedpreference(mainactivity.this);
                boolean flag = sharedpreference.savemessage("furong", "123456");

                toast.maketext(mainactivity.this, "---->" + flag, 1).show();
            }
        });

        button2 = (button) findviewbyid(r.id.button2);
        button2.setonclicklistener(new view.onclicklistener() {

            @override
            public void onclick(view v) {
                // todo auto-generated method stub
                map<string, object> map;

                sharedpreference sharedpreference = new sharedpreference(mainactivity.this);
                map = sharedpreference.getmessage();

                toast.maketext(mainactivity.this, map.tostring(), 1).show();
            }
        });
    }

写测试

读测试