删除共享的首选项键/值对 [英] Remove Shared preferences key/value pairs

问题描述

我将一些付款值存储在一个活动中

I store some payment values in one Activity

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

现在我以另一种方式检索它们

Now I retrieve them in another one as

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

我的问题是检索它们后在第二个活动中将其删除.谢谢.

My question is to delete them in the second Activity after retrieving them.Thanks.

推荐答案

使用

在编辑器中标记首选项值应为删除，一旦commit()被执行，将在实际的首选项中完成叫.

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

请注意，当返回到首选项时，所有删除项都是无论您是在调用之前还是之后调用remove，都首先完成在此编辑器上放置方法.

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.

---

因此，在您的情况下，您可以像

---

So in your case you can use it like

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

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