Question

I have problem understanding shared preferences. I have activity where user will insert password, start price, waiting price etc. My plan was to set starting value, and than user would change that value if he wants. My question is: If I create prefs in onCreate() method, how change would apply (using SharedPreferences.Editor) when every time i run application it should create new values in prefs.

Answer 1

<强> 获得共享偏好,使用以下方法在您的活动中 :

 SharedPreferences prefs = this.getSharedPreferences(
          "com.example.app", Context.MODE_PRIVATE);

读取首选项:

String dateTimeKey = "com.example.app.datetime";

// use a default value using new Date()
long l = prefs.getLong(dateTimeKey, new Date().getTime());

< 强 > 编辑和保存首选项

 Date dt = getSomeDate();
    prefs.edit().putLong(dateTimeKey, dt.getTime()).commit();

Answer 2

不,它会改变上一个一个按键......

http://mobile.tutsplus.com/tutorics/android/android/android-application-preferences/"rel="nofollow" >http://mobile.tutsplus.com/tutorics/android/android/android-application-preferences/

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