糖果机器人_0006_day2_账号密码的保存_调用

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同比上篇增加

zhuce_layout.xml对button添加了点击事件


        <Button            android:id="@+id/btn_tiaozhuang"            android:layout_width="50dp"            android:layout_height="50dp"            android:layout_alignParentRight="true"            android:background="@drawable/baocun"             android:onClick="Start_baocun"            />


zhuce_Activity.java增加了控件ID的获取,数据判断,数据储存等功能,代码整篇copy


package com.example.app_login;import android.app.Activity;import android.content.SharedPreferences;import android.os.Bundle;import android.view.View;import android.view.Window;import android.widget.EditText;import android.widget.ShareActionProvider;import android.widget.Toast;public class zhuce_Activity extends Activity {private SharedPreferences.Editor editor;EditText ed_zhanghao=null;EditText ed_mima01=null;EditText ed_mima02=null;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);// 去掉页面的标题栏this.requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.zhuce_layout);//实例化SharePreferences对象SharedPreferences sh=this.getSharedPreferences("TT", Activity.MODE_PRIVATE);//实例化存储对象editor =sh.edit();FindView();}private void FindView(){ed_zhanghao=(EditText)findViewById(R.id.ed_zhanghao);ed_mima01=(EditText)findViewById(R.id.ed_mima01);ed_mima02=(EditText)findViewById(R.id.ed_mima02);}//点击保存按钮的方法public void Start_baocun(View v){String stg_zhanghao=ed_zhanghao.getText().toString().trim();String stg_mima01=ed_mima01.getText().toString().trim();String stg_mima02=ed_mima02.getText().toString().trim();//如果不一样if(!stg_mima01.equals(stg_mima02)){Toast.makeText(this, "密码不一致", 1).show();ed_mima01.setText("");ed_mima02.setText("");return ;}editor.putString("zhanghao",stg_zhanghao);editor.putString("mima",stg_mima01);editor.commit();//数据提交Toast.makeText(this, "保存的账号"+stg_zhanghao+",密码"+stg_mima01, 1).show();//关闭当前界面this.finish();}}


MainActivity.java 

增加了实例化SharePreferences对象

同时判断账号是否存在


下列存在于onCreate方法中

//实例化SharePreferences对象final SharedPreferences sh=this.getSharedPreferences("TT", Activity.MODE_PRIVATE);

下列代码存在于按钮的点击事件监听中

btn_01.setOnClickListener(new OnClickListener(){

})

String stg_zhanghao=sh.getString("zhanghao", "");String stg_mima=sh.getString("mima","");// 给定一个默认的账号密码if (stg_01.equals(stg_zhanghao) && stg_02.equals(stg_mima)) {Toast.makeText(MainActivity.this, "登录成功", 1).show();} else {Toast.makeText(MainActivity.this, "登录失败,清空数据", 1).show();// 清空输入框内容ed_01.setText("");ed_02.setText("");}



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