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