Android:无法从String转换为Editable

Question

一个简单的问题:

我收到错误:无法从String转换为可编辑.这是代码:

Credential.getInstance().UserName = preferences.getString("UserName", "invalid value");
Credential.getInstance().Password = preferences.getString("UserName", "invalid value");

我也尝试过像下面那样:

Credential.getInstance().UserName = (Editable) preferences.getString("UserName", "invalid value");
Credential.getInstance().Password = (Editable) preferences.getString("UserName", "invalid value");

这次我收到错误:无法从String转换为Editable.

该怎么办？

Answer 1

对于有兴趣将String转换为可编辑的人

Editable.Factory.getInstance().newEditable("myString");

从文档中,追加是

附加的便利性(String.valueOf(text)).

Answer 2

一定:

Credential.getInstance().UserName.append(preferences.getString("UserName", "invalid value"));

带答案的API:

http://developer.android.com/reference/android/text/Editable.html