<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:stretchColumns="1"
  >
  <TableRow
    android:id="@+id/tableRow1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
    <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Account:" />
    <EditText
      android:id="@+id/account"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:hint="Input your account here"
      android:ems="10" >
    </EditText>
  </TableRow>
  <TableRow
    android:id="@+id/tableRow2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
    <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Password:"
       />
    <EditText
      android:id="@+id/password"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:ems="10"
      android:inputType="textPassword"
      >
    </EditText>
  </TableRow>
  <TableRow
    android:id="@+id/tableRow3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
    <Button
    android:id="@+id/login"
    android:layout_span="2"
    android:layout_height="wrap_content"
    android:text="save data" />
  </TableRow>
  <TextView
    android:layout_width="wrap_content"
    android:layout_height="20dp"
    android:background="#ff0000"
    android:text="我是萬(wàn)惡的分割線(xiàn)"
    android:textSize="20sp"
    android:gravity="center"
    />
   <TableRow
    android:id="@+id/tableRow4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
    <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Account:" />
    <EditText
      android:id="@+id/account2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:ems="10" >
    </EditText>
  </TableRow>
  <TableRow
    android:id="@+id/tableRow5"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
    <TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Password:"
       />
    <EditText
      android:id="@+id/password2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:ems="10"
      android:inputType="textPassword"
      >
    </EditText>
  </TableRow>
  <TableRow
    android:id="@+id/tableRow6"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >
    <Button
    android:id="@+id/login2"
    android:layout_span="2"
    android:layout_height="wrap_content"
    android:text="restore data" />
  </TableRow>
</TableLayout>

package com.example.testsharedpreferences;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
/**
 * Android 持久化技術(shù)-----SharedPreferences存儲(chǔ)
 * @author yy
 *
 */
public class MainActivity extends Activity {
  private EditText accountEdit;
  private EditText passwordEdit;
  private Button saveButton;
  private Button restoreButton;
  private SharedPreferences pref;
  private SharedPreferences.Editor editor;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //存儲(chǔ)按鈕
    saveButton = (Button) findViewById(R.id.login);
    //為存儲(chǔ)按鈕添加點(diǎn)擊事件
    saveButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View arg0) {
        //獲取SharedPreferences對(duì)象
        //第一個(gè)參數(shù)：文件名，沒(méi)有則新建。第二個(gè)參數(shù)：寫(xiě)入模式-覆蓋
        pref = getSharedPreferences("second", MODE_PRIVATE);
        //獲取SharedPreferences.Editor對(duì)象
        editor = pref.edit();
        //獲取輸入的賬號(hào)內(nèi)容
        accountEdit = (EditText) findViewById(R.id.account);
        String account = accountEdit.getText().toString();
        //獲取輸入的密碼內(nèi)容
        passwordEdit = (EditText) findViewById(R.id.password);
        String password = passwordEdit.getText().toString();
        //存儲(chǔ)用戶(hù)名和密碼
        editor.putString("account", account);
        editor.putString("password", password);
        //提交
        editor.commit();
        Toast.makeText(getApplicationContext(), "保存成功", Toast.LENGTH_SHORT).show();
      }
    });
    //獲取恢復(fù)按鈕對(duì)象
    restoreButton = (Button) findViewById(R.id.login2);
    //添加事件
    restoreButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View arg0) {
        //獲取SharedPreference對(duì)象
        pref = getSharedPreferences("second", MODE_PRIVATE);
        //讀取內(nèi)容
        String account = pref.getString("account", "this is default value");
        String password = pref.getString("password", "this is default value");
        //設(shè)置到響應(yīng)位置
        EditText editText2 = (EditText)findViewById(R.id.account2);
        editText2.setText(account);
        EditText passwordText2 = (EditText) findViewById(R.id.password2);
        passwordText2.setText(password);
        Toast.makeText(getApplicationContext(), "恢復(fù)成功", Toast.LENGTH_SHORT).show();
      }
    });
  }
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }
}