SharedPreferences.Editor(示例,出错代码)

From:http://www.apihome.cn/api/android/SharedPreferences.Editor.html

android.content
接口 SharedPreferences.Editor

正在封闭接口：

SharedPreferences

---

public static interface SharedPreferences.Editor

Interface used for modifying values in a SharedPreferences object. All changes you make in an editor are batched, and not copied back to the original SharedPreferences or persistent storage until you call commit().

---

方法摘要 SharedPreferences.Editorclear() 
          Mark in the editor to remove all values from the preferences. booleancommit() 
          Commit your preferences changes back from this Editor to the SharedPreferences object it is editing. SharedPreferences.EditorputBoolean(String key, boolean value) 
          Set a boolean value in the preferences editor, to be written back once commit() is called. SharedPreferences.EditorputFloat(String key, float value) 
          Set a float value in the preferences editor, to be written back once commit() is called. SharedPreferences.EditorputInt(String key, int value) 
          Set an int value in the preferences editor, to be written back once commit() is called. SharedPreferences.EditorputLong(String key, long value) 
          Set a long value in the preferences editor, to be written back once commit() is called. SharedPreferences.EditorputString(String key, String value) 
          Set a String value in the preferences editor, to be written back once commit() is called. SharedPreferences.Editorremove(String key) 
          Mark in the editor that a preference value should be removed, which will be done in the actual preferences once commit() is called. 

方法详细信息

putString

SharedPreferences.Editor putString(String key,                                   String value)

Set a String value in the preferences editor, to be written back once commit() is called.

参数：

key - The name of the preference to modify.

value - The new value for the preference.

返回：

Returns a reference to the same Editor object, so you can chain put calls together.

---

putInt

SharedPreferences.Editor putInt(String key,                                int value)

Set an int value in the preferences editor, to be written back once commit() is called.

参数：

key - The name of the preference to modify.

value - The new value for the preference.

返回：

Returns a reference to the same Editor object, so you can chain put calls together.

---

putLong

SharedPreferences.Editor putLong(String key,                                 long value)

Set a long value in the preferences editor, to be written back once commit() is called.

参数：

key - The name of the preference to modify.

value - The new value for the preference.

返回：

Returns a reference to the same Editor object, so you can chain put calls together.

---

putFloat

SharedPreferences.Editor putFloat(String key,                                  float value)

Set a float value in the preferences editor, to be written back once commit() is called.

参数：

key - The name of the preference to modify.

value - The new value for the preference.

返回：

Returns a reference to the same Editor object, so you can chain put calls together.

---

putBoolean

SharedPreferences.Editor putBoolean(String key,                                    boolean value)

Set a boolean value in the preferences editor, to be written back once commit() is called.

参数：

key - The name of the preference to modify.

value - The new value for the preference.

返回：

Returns a reference to the same Editor object, so you can chain put calls together.

---

remove

SharedPreferences.Editor remove(String key)

Mark in the editor that a preference value should be removed, which will be done in the actual preferences once commit() is called.

Note that when committing back to the preferences, all removals are done first, regardless of whether you called remove before or after put methods on this editor.

参数：

key - The name of the preference to remove.

返回：

Returns a reference to the same Editor object, so you can chain put calls together.

---

clear

SharedPreferences.Editor clear()

Mark in the editor to remove all values from the preferences. Once commit is called, the only remaining preferences will be any that you have defined in this editor.

Note that when committing back to the preferences, the clear is done first, regardless of whether you called clear before or after put methods on this editor.

返回：

Returns a reference to the same Editor object, so you can chain put calls together.

---

commit

boolean commit()

Commit your preferences changes back from this Editor to theSharedPreferences object it is editing. This atomicallyperforms the requested modifications, replacing whatever is currentlyin the SharedPreferences.

Note that when two editors are modifying preferences at the sametime, the last one to call commit wins.

返回：

Returns true if the new values were successfully writtento persistent storage.