Android 将 Edittext 内容保存到 SharedPreferences 并读回

发布于 2024-09-10 08:44:46 字数 850 浏览 1 评论 0原文

在我的 xml 中，我的配置类中有一个像这样的 edittext 元素，

<EditText
android:id="@+id/hrvalue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="64"
android:textSize="18sp">
</EditText>

我想读取 edittext 的值并将其保存到变量中。在编辑文本框中，用户将输入一个整数。我编写了以下代码

SharedPreferences prefs = self.getSharedPreferences("prefs", 0);
SharedPreferences.Editor edit = prefs.edit();
EditText hrvalue = (EditText)findViewById(R.id.hrvalue);
edit.putString("hrvalue"+appWidgetId,hrvalue.getText().toString());
edit.commit();

我可以将编辑文本框中的值读取为整数吗？

现在我想在其他类中读取该值作为整数，但我不知道该怎么做。共享首选项键、值对对我来说有点令人困惑。我写的

int hrvalue=prefs.getInt("hrvalue"+appWidgetId,1);

是这样正确吗？这是从编辑文本中读取并将其添加到共享首选项的正确方法吗？编辑文本框的值存储在哪里？我在复选框方面取得了成功，但在编辑文本方面尚未取得成功。

谢谢。

原文

In my xml i have an edittext element like this

<EditText
android:id="@+id/hrvalue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="64"
android:textSize="18sp">
</EditText>

in my configuration class i want to read the value of the edittext and save it to a variable.
In the edittext box the user will be inputting a number integer.
I have wrote the following code

SharedPreferences prefs = self.getSharedPreferences("prefs", 0);
SharedPreferences.Editor edit = prefs.edit();
EditText hrvalue = (EditText)findViewById(R.id.hrvalue);
edit.putString("hrvalue"+appWidgetId,hrvalue.getText().toString());
edit.commit();

Could i read the value in the edittext box as integer?

Now I want to read the value as integer in my other class but i don't know how to do it.
The sharedpreferences key,value pairs is a bit confusing for me.
I wrote

int hrvalue=prefs.getInt("hrvalue"+appWidgetId,1);

Is this correct? Is that the correct way of reading from an edittext and adding it to sharedpreferences?Where is the value of an edittextbox stored?
I had success with checkbox but not yet with edittext.

Thanks.

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