使用SharedPreferences保存多个EditText值 [英] Save multiple EditText values using SharedPreferences

问题描述

我正在尝试构建一个应用程序，以便有人可以填写其个人数据，例如姓名，电话号码，电子邮件...

I'm trying to build an app where someone can fill in their personal data like their name, telephone number, Email...

对于上述每个字段，我创建了一个EditText.现在，我的目标是使用SharedPreferences保存用户的输入，以便他/她不必在每次重新打开应用程序时都填写该输入.

For each field mentioned above, I created an EditText. Now my goal is to save the user's input using SharedPreferences so that he/she don't have to fill it up every time they reopen the app.

我找到的代码仅用于保存一个EditText的数据(

The codes I've found take care of saving the data for one EditText only (Save entered text in editText via button). How can I achieve that on multiple EditText fields?

这是我下面的XML文件:

This is my XML file below:

    <?xml version="1.0" encoding="utf-8"?>

<ScrollView 
    xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

<LinearLayout 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Vul dit compleet in"
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:textStyle="bold"/>

  <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Naam: "
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:textStyle="bold"/>


    <EditText 
        android:id="@+id/edit_Naam"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:hint="Vul uw naam in"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Functie: "
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:textStyle="bold"/>


    <EditText 
        android:id="@+id/edit_Functie"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:hint="Vul uw functie in"/>

        <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Personeelsnummer "
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:textStyle="bold"/>


    <EditText 
        android:id="@+id/edit_Plnr"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:hint="Vul uw plnr in"/>

    <TextView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Email: " 
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:textStyle="bold"/>

    <EditText 
        android:id="@+id/edit_Email"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textEmailAddress" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:hint="NS mail"/>

    <TextView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Telefoon: "  
        android:textAppearance="?android:attr/textAppearanceMedium" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:textStyle="bold"/>

     <EditText
         android:id="@+id/edit_Telefoon"  
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="number" 
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:textColor="#000066"
        android:hint="zonder +31"/>





    <Button
        android:id="@+id/button_Opslaan"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_below="@+id/edit_Bericht"
            android:layout_centerHorizontal="true"
            android:layout_marginBottom="48dp"
            android:layout_weight="0.03"
            android:background="#009CDE"
            android:drawableLeft="@drawable/ic_launcher"
            android:text="Opslaan"
            android:textColor="#FFFFFF"/>


</LinearLayout>
</ScrollView>

推荐答案

您只需保存每个EditText值，并在下次重新加载Activity时检索它们.以下代码改编自您在问题中提到的链接:

You just have to save each EditText value and retrieve them next time your Activity reloads. The code below is adapted from the link you mentioned in your question:

public class PersonalInformation extends Activity{

private SharedPreferences savedFields;
private Button saveButton;
private EditText editText1;
private EditText editText2;
// Add all your EditTexts...

// Upon creating your Activity, reload all the saved values.
protected void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_layout);

    saveButton = (Button) findViewById(R.id.your_save_button_id);
    editText1 = (EditText) findViewById(R.id.your_edit_text_1_id);
    editText2 = (EditText) findViewById(R.id.your_edit_text_2_id);
    // Keep adding all your EditTexts the same way...

    // "info" is just a tag name, use anything you like
    savedFields = getSharedPreferences("info", MODE_PRIVATE);

    // In case no value is already saved, use a Default Value
    editText1.setText(savednotes.getString("editText1", "Default Value 1"));
    editText2.setText(savednotes.getString("editText2", "Default Value 2"));

    // Save the changes upon button click
    saveButton.setOnClickListener(saveButtonListener);
}

public OnClickListener saveButtonListener = new OnClickListener() {
    @Override
    public void onClick(View v) {
        SharedPreferences.Editor preferencesEditor = savedFields.edit();
        if(editText1.getText().length() > 0) // Not empty
             preferencesEditor.putString("editText1", editText1.getText());
        if(editText2.getText().length() > 0) // Not empty
             preferencesEditor.putString("editText2", editText2.getText());
        // You can make a function so you woudn't have to repeat the same code for each EditText

        // At the end, save (commit) all the changes
        preferencesEditor.commit();
        }
    }
};
}

这篇关于使用SharedPreferences保存多个EditText值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！