一、题目

Android SharedPreferences存储电话号码

二、环境

Win10 AndroidStudio

三、代码实现

package com.example.children;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class StoryPhoneActivity extends AppCompatActivity implements View.OnClickListener {
    private TextView text1;
    private TextView text2;
    private EditText PhoneNumber1;
    private EditText PhoneNumber2;
    private Button mBtnOk;

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


    @Override
    public void onClick(View v) {
        String phone1 = PhoneNumber1.getText().toString().trim();
        String phone2 = PhoneNumber2.getText().toString().trim();
        if ("".equalsIgnoreCase(phone1) || "".equalsIgnoreCase(phone2)) {
            Toast.makeText(this, "爸爸妈妈的电话都不能为空！", Toast.LENGTH_LONG).show();
        }
        else {
            SharedPreferences phone_info = getSharedPreferences("phone_info", MODE_PRIVATE);
            SharedPreferences.Editor editor = phone_info.edit();
            editor.putString("PhoneNumber1",phone1);
            editor.putString("PhoneNumber2",phone2);
            editor.apply();//---应用操作
            editor.commit();
            Toast.makeText(this, "电话信息保存成功！", Toast.LENGTH_LONG).show();
        }
    }

    private void initViews() {
        text1 = (TextView) findViewById(R.id.text1);
        text2 = (TextView) findViewById(R.id.text2);
        PhoneNumber1 = (EditText)findViewById(R.id.PhoneNumber1);
        PhoneNumber2 = (EditText)findViewById(R.id.PhoneNumber2);
        mBtnOk = (Button)findViewById(R.id.btnOk);

        mBtnOk.setOnClickListener(this);
    }
}

四、实验结果

后一篇博客为一键拨号的demo

有问题，欢迎留言交流！