SharedPreferences 使用

1，获取到SharedPreferences

2，编辑SharedPreferences SharedPreferences.Editor

3，提交 commit（）

4,获取get****

package com.example.listactivity;

import android.app.Activity;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;
public class Sharepreferencesc extends Activity {
private SharedPreferences _preferences;

    private SharedPreferences.Editor _edit;

    private EditText _username;

    private EditText _password;

    private Button _submit;
@Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.login);
initView();

    }

    public void initView() {

        _preferences = this.getSharedPreferences("haoju", MODE_PRIVATE);

        _edit = _preferences.edit();
_username = (EditText)this.findViewById(R.id.username);

        _password = (EditText)this.findViewById(R.id.password);

        _submit   = (Button)this.findViewById(R.id.submit);
_username.setText(_preferences.getString("username", null));

        _password.setText(_preferences.getString("password", null));
_submit.setOnClickListener(new onclick());
}
class onclick implements OnClickListener{
@Override

        public void onClick(View v) {

            _edit.putString("username", _username.getText().toString().trim());

            _edit.putString("password", _password.getText().toString().trim());
_edit.commit();
}
}

}

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