Question

我将一些付款值存储在一个活动

中

SharedPreferences spreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
productId = spreferences.getString("productId", "");
purchaseToken = spreferences.getString("purchaseToken", "");
orderId = spreferences.getString("orderId", "");

现在我在另一个中检索它们

SharedPreferences spreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
productId = spreferences.getString("productId", "");
purchaseToken = spreferences.getString("purchaseToken", "");
orderId = spreferences.getString("orderId", "");

我的问题是在检索它们后在第二个Activity中删除它们。谢谢。

Answer 1

使用SharedPreferences.Editor remove (String key)执行相同的操作。

在编辑器中标记偏好值应该是   删除，这将在commit（）之后在实际首选项中完成   调用。

请注意，在提交回首选项时，所有删除都是   首先完成，无论你是否在之前或之后调用删除   把方法放在这个编辑器上。

因此，在您的情况下，您可以像

一样使用它

SharedPreferences.Editor editor = spreferences.edit();
editor.remove("productId");
editor.remove("purchaseToken");
editor.remove("orderId");
editor.commit();

Answer 2

要在SharedPreference中存储值，请使用以下代码：

SharedPreferences spreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
Editor spreferencesEditor = spreferences.edit();
spreferencesEditor.putString("productId", "value of prodId");
spreferencesEditor.putString("purchaseToken", "value of purchaseToken");
spreferencesEditor.putString("orderId", "value of orderId");
spreferencesEditor.commit();

要从SharedPreference中删除特定值，请使用以下代码：

SharedPreferences spreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
Editor spreferencesEditor = spreferences.edit();
spreferencesEditor.remove("productId"); //we are removing prodId by key
spreferencesEditor.commit();

要从SharedPreference中删除所有值，请使用以下代码：

SharedPreferences spreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
Editor spreferencesEditor = spreferences.edit();
spreferencesEditor.clear();
spreferencesEditor.commit();

Answer 3

您可以使用此

删除与特定键关联的任何值

SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
SharedPreferences.Editor editor = prefs.edit();
editor.remove("your_key");
editor.commit();

或

SharedPreferences prefs = context.getSharedPreferences(name, mode);
SharedPreferences.Editor editor = prefs.edit();
editor.remove(your_key) 
editor.commit();

Answer 4

你需要像删除我的偏好一样。

    SharedPreferences preferences = contextAct.getSharedPreferences("PREF_KEY", 0);
                    preferences.edit().remove("productId").commit();
                    preferences.edit().remove("purchaseToken").commit();
                    preferences.edit().remove("orderId").commit();


    Format : preferences.edit().remove("Your Key").commit();

这将清除您的偏好。

Answer 5

SharedPreferences spreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
SharedPreferences.Editor editor=spreferences.edit();
 editor.remove("productId");
 editor.remove("purchaseToken");
 editor.remove("orderId");
 editor.commit();
 // you can also use editor.apply(); instead of editor.commit(); using apply will handle the removing in the background

Answer 6

要清除SharedPreferences，请使用SharedPreferences Editor 在你的情况下：

SharedPreferences spreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
SharedPreferences.Editor editor = spreferences.edit();
editor.clear(); 
editor.commit();

删除共享首选项键/值对

6 个答案: