android 保存配置文档

public class Test extends Activity implements OnClickListener {

    private EditText etName;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        etName = (EditText) findViewById(R.id.etName);
        Button btnLoad = (Button) findViewById(R.id.btnLoad);
        Button btnSave = (Button) findViewById(R.id.btnSave);
        btnLoad.setOnClickListener(this);
        btnSave.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        SharedPreferences pre = Test.this.getSharedPreferences("hfgis",
                Context.MODE_PRIVATE);
        switch (v.getId()) {
        case R.id.btnLoad:
            etName.setText(pre.getString("account", "加载失败!"));
            break;
        case R.id.btnSave:
            Editor ed = pre.edit();
            String str = etName.getText().toString().trim();
            ed.putString("account", str);
            ed.commit();
            break;
        default:
            break;
        }
    }
}