package com.example.youngwind.helloworld.FileStorage;import android.app.Activity;import android.content.SharedPreferences;import android.os.Bundle;import android.view.View;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;import com.example.youngwind.helloworld.R;public class SharedPreferencesTest extends Activity {    private EditText accountEdit;    private EditText passwordEdit;    private CheckBox rememberPass;    private SharedPreferences pref;    private SharedPreferences.Editor editor;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_shared_preferences_test);        accountEdit = (EditText) findViewById(R.id.account);        passwordEdit = (EditText) findViewById(R.id.password);        rememberPass = (CheckBox) findViewById(R.id.remember_pass);        pref = getSharedPreferences("data", MODE_PRIVATE);        Boolean isRemember = pref.getBoolean("remember_password", false);        if (isRemember) {            accountEdit.setText(pref.getString("account", ""));            passwordEdit.setText(pref.getString("password", ""));            rememberPass.setChecked(true);        }        findViewById(R.id.login).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                String account = accountEdit.getText().toString();                String password = passwordEdit.getText().toString();                if (account.equals("") && password.equals("")) {                    Toast.makeText(view.getContext(), "账户密码不能为空", Toast.LENGTH_SHORT).show();                    return;                }                editor = pref.edit();                // 是否"勾选记住密码"判断                if (rememberPass.isChecked()) {                    editor.putBoolean("remember_password", true);                    editor.putString("account", account);                    editor.putString("password", password);                } else {                    editor.clear();                }                editor.commit();                Toast.makeText(view.getContext(), "请从主页重新进入登录", Toast.LENGTH_SHORT).show();                finish();            }        });    }}