共享偏好？ （非常简单的问题!?） [英] Shared preferences? (Extremely simple issue!?)

问题描述

我只是试图在共享偏好设置中存储来自editText的用户输入，但不起作用：

editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
    @Override
    public boolean onEditorAction(TextView v, int keycode, KeyEvent event) {

        Log.v(TAG, keyword.getString("keyword", "mDefault")); //IT LOGS OUT THE DEFAULT STRING EVEN **AFTER** STORING THE PREFERENCES BEFORE

        if (keycode == EditorInfo.IME_ACTION_SEND) {
            editText.setText(editText.getText().toString());

            keywordEditor.putString("keyword", editText.getText().toString());
            keywordEditor.commit();

            Log.v(TAG, keyword.getString("keyword", "default")); //CORRECT! THIS LINE WORKS
            }
        }
    return true;
});

当我第一次编辑文本时，我会先获取一个日志 mDefault 这是正常的，因为没有存储在共享首选项中。

When I first edit the text, I will first get a log of "mDefault" which is normal, since nothing is stored in the shared preference.

然后，我在共享首选项中存储一些东西，肯定它存储，我日志，我得到一个日志，我打字。 这意味着存储了共享的首选项数据。

Then, I store something in the shared preference, and to make sure it stored, I log and I get a log of what I typed. Which means the shared preference data WAS stored.

遇到问题：喜欢，我去一个不同的活动，我回来，共享偏好中存储的所有数据 GONE！

Heres the problem: After I have stored something in the shared preference, I go to a different activity, and I come back, and all the data stored in the shared preference is GONE!

通过活动导航后，第一本日志仍然显示 mDefault 。

The very first log still says mDefault after navigating through activities.

？

编辑：

以下是我的实例化：

onCreate ：

 keyword = PreferenceManager.getDefaultSharedPreferences(this); //Making a shared preferences
        keywordEditor = keyword.edit();

推荐答案

非常重要：需要偏好设置名称（例如：MY_PREFS_NAME）设置和检索值：

Very important: you need a Preference name (for example: "MY_PREFS_NAME") to set and retrieve the values:

SharedPreferences.Editor keywordEditor = context.getSharedPreferences("MY_PREFS_NAME", MODE_PRIVATE).edit();

使用相同的常数首选项名称，它会在应用程序的任何一点给予相同的首选项。

Use the same constant Preference name and it will give you the same preferences in any point of your app.

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