如何获取Android的SharedPreferences的价值 [英] How to get value of SharedPreferences android

问题描述

我正在尝试使用 SharedPreferences 这是我的工作

I'm trying to use SharedPreferences here is what i do

public void StoreToshared(Object userData){
    SharedPreferences mPrefs = getPreferences(MODE_PRIVATE);
    SharedPreferences.Editor prefsEditor = mPrefs.edit();

    Gson gson = new Gson();
    String json = gson.toJson(userData);
    Log.d("data", " Setup --> "+json);
    prefsEditor.putString("userinfo", json);
    prefsEditor.commit();

}

Log.d 结果是这样的

 Setup --> {"nameValuePairs":{"userData":{"nameValuePairs":{"phone":"089688xxxxxxx",
  "username":"username of User","flag":1,"Email":"[e-mail]",
  "tipe":"TP001","Deskripsi":"Ini tentang gua","user_id":"USER001",
 "password":"c83e4046a7c5d3c4bf4c292e1e6ec681","fullname":My fullname"}},"status":"true"}}

然后我要检索它，这是我在做的其他活动

then i'm trying to retrieve it, in other activity here is what i do

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        SharedPreferences mPrefs = getPreferences(MODE_PRIVATE);
        SharedPreferences.Editor prefsEditor = mPrefs.edit();

        String data = mPrefs.getString("userinfo", null);
        Log.i("Text", "Here is the retrieve");
        Log.i("data", " retrieve --> "+data);

    }

以及我如何打开其他活动

and here how i open my other activity

Intent intent = new Intent(Login.this, MainActivity.class);
startActivity(intent);

使用上面的脚本，我的 logcat 的结果，我只会看到上面的 Log.d .所以我的问题是，我该如何找回它?

With my script above, the result from my logcat , i only see like Log.d above. So my question is, how can i retrieve it ?

推荐答案

尝试在您的 SharedPreferences 上添加密钥:

Try to add a key on your SharedPreferences:

public void StoreToshared(Object userData){
    SharedPreferences mPrefs = getSharedPreferences("your_sp_key", MODE_PRIVATE); //add key
    SharedPreferences.Editor prefsEditor = mPrefs.edit();

    Gson gson = new Gson();
    String json = gson.toJson(userData);
    Log.d("data", " Setup --> "+json);
    prefsEditor.putString("userinfo", json);
    prefsEditor.commit();

}

检索:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    SharedPreferences mPrefs = getSharedPreferences("your_sp_key", MODE_PRIVATE); //add key
    SharedPreferences.Editor prefsEditor = mPrefs.edit();

    String data = mPrefs.getString("userinfo", null);
    Log.i("Text", "Here is the retrieve");
    Log.i("data", " retrieve --> "+data);

}

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