Question

我想使用SharedPreferences保存在spinner

中选择的所选项目

这是我的编码

package com.mulder.jip.schoolroosterbeta2;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;

public class CustumMaandag extends Activity {

    Context Context = this;
    private Spinner les1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_custum_maandag);
        {

            les1 = (Spinner) findViewById(R.id.les1);
            List<String> list = new ArrayList<String>();
            list.add("Test1");
            list.add("Test2");
            list.add("Test3");

            ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>
                    (this, android.R.layout.simple_spinner_dropdown_item,list);

            dataAdapter.setDropDownViewResource
                    (android.R.layout.simple_spinner_dropdown_item);
            les1.setAdapter(dataAdapter);

            les1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {


                public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
                    Object obj = parent.getItemAtPosition(pos);
                    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(Context);
                    SharedPreferences.Editor prefsEditor = prefs.edit();
                    prefsEditor.putString("object", obj.toString());
                    prefsEditor.commit();
                }
                public void onNothingSelected(AdapterView<?> parent) { }
            });
        }
    }
}

我做错了什么？

Answer 1

试试这个。

String selecteditem = les1 .getSelectedItem().toString();

并保存在像这样的共享pref中

 prefsEditor.putString("object", selecteditem );

Answer 2

尝试在onItemSelected(...){ *here }

中使用此功能

String selectedText = les1.getSelectedItem().toString();
SharedPreferences.Editor editor = getSharedPreferences("your_prefs_name", MODE_PRIVATE).edit();
editor.putString("your_key", selectedText);
editor.commit();

如何使用带有微调器的SharedPreferences

2 个答案: