Loading...

Android Fragment及Activity 中使用sharedpreferences

Temperature: 0 °C

Mark ChangMark Chang
author_tools

在Android下想要儲存執行資料的方式有好幾種,例如存在手機空間或者是資料庫空間。

這裡紀錄一下使用sharedpreferences的方式。

若是使用Activity方式如下:

儲存

String msg = "test";
SharedPreferences sharedPreferences = getSharedPreferences("data" , MODE_PRIVATE);
//取得SharedPreferences , 丟入的參數為("名稱" , 存取權限)
sharedPreferences.edit().putString("MSG" , msg).apply();

取回
SharedPreferences sharedPreferences = getSharedPreferences("data" , MODE_PRIVATE);
//取出資料, 丟入的參數為(key , 若是沒值,預設為多少)
showBMI.setText("上回儲存結果:" + "\r\n\n" + sharedPreferences.getString("MSG" , "..."));

若是使用Fragment方式如下:

儲存
String msg = "test";
SharedPreferences pref = getActivity().getPreferences(Context.MODE_PRIVATE);
SharedPreferences.Editor edt = pref.edit();
edt.putString("MSG" , msg);
edt.commit();

取回
SharedPreferences pref = getActivity().getPreferences(Context.MODE_PRIVATE);
showBMI.setText("上回儲存結果:" + "\r\n\n" + pref.getString("MSG", "..."));

以上紀錄~

https://innstory.com/story-Android_Fragment及Activity_中使用sharedpreferences-1867
Android

Prev
 利用_htaccess_限制可瀏覽ip來源

Next
使用jquery判斷上傳檔案大小 

About the Author

Mark Chang

離不開電腦的宅男

Visitor message

Leave some footprints to prove that you visited me

Recommended reading

Author's other related stories

javascript change css class

javascript cha...

javascript 使用classList是一個方便的替代方法,可以將元素的類列表作為空格分隔的字...

讓文字左右對齊

讓文字左右對齊

讓文字左右對齊這類的設計案,通常都會出現在平面設計居多。 網頁上很少會遇到客戶會執著於這方面,但不能...

JavaScript 取得今天日期

JavaScript 取得今...

JavaScript 使用 Date() 來取得時間的資訊。 再使用指令如 getDate()、ge...

Please select an option

error

Hi, thank you for your participation, but you cannot vote repeatedly~

Join innstory now and start recording your story.

"Innstory" is a place to store stories. We are committed to becoming a warm platform. Deepening the bonds between people is our direction.
We are convinced that the blockchain between people is not just a cold calculation. Join us now.

Wrong format