作业9

package com.example.fg;



import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
    private EditText et1;
     private EditText et2;
     private CheckBox cb;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
      et1=(EditText) findViewById(R.id.et1);
      et2=(EditText)findViewById(R.id.et2);
      cb=(CheckBox)findViewById(R.id.cb);
         SharedPreferences sp = getSharedPreferences("date", MODE_PRIVATE);
         et1.setText(sp.getString("name", ""));
            et2.setText(sp.getString("password", ""));

    }
    public void CCC(View view) {
        
        if ("gsf".equals(et1.getText().toString()) && "666".equals(et2.getText().toString())) {
            if (cb.isChecked()) {
                SharedPreferences sp = getSharedPreferences("date", MODE_PRIVATE);
                SharedPreferences.Editor editor = sp.edit();
                editor.putString("name", et1.getText().toString());
                editor.putString("password", et2.getText().toString());
                editor.commit();
                Toast.makeText(this, "登陆成功，已保存", Toast.LENGTH_SHORT).show();
            } else {
                SharedPreferences sp = getSharedPreferences("date", MODE_PRIVATE);
                SharedPreferences.Editor editor = sp.edit();
                editor.putString("name", "");
                editor.putString("password", "");
                editor.commit();
                Toast.makeText(this, "登陆成功，未保存", Toast.LENGTH_SHORT).show();
            }
        } else {
            Toast.makeText(this, "密码错误，请重试", Toast.LENGTH_SHORT).show();
            et1.setText("");
            et2.setText("");
        }
    }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.fg.MainActivity" >

   <ImageView
    android:id="@+id/iv_head"
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="40dp"
    android:src="@drawable/dddss" />
   <TextView
    android:id="@+id/tv1"
    android:layout_width="60dp"
    android:layout_height="20dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginTop="104dp"
    android:text="账号" />
   <TextView
    android:id="@+id/tv2"
    android:layout_width="60dp"
    android:layout_height="20dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
 android:layout_marginTop="154dp"
    android:text="密码" />
   

 <EditText
    android:id="@+id/et1"
    android:layout_width="90dp"
    android:layout_height="40dp"
   android:layout_alignParentLeft="true"
   android:layout_alignParentTop="true"
    android:layout_marginTop="104dp"
    android:layout_marginLeft="95dp"
    android:ems="10" />
 <EditText
    android:id="@+id/et2"
    android:layout_width="90dp"
    android:layout_height="40dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginLeft="95dp"
    android:layout_marginTop="154dp"
    android:inputType="textPassword" />
 
 <CheckBox
      android:id="@+id/cb"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentLeft="true"
      android:layout_alignParentTop="true"
      android:layout_marginTop="204dp"
      android:text="记住密码"
      android:textSize="20sp" />

<Button
     android:id="@+id/button1"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_alignParentLeft="true"
     android:layout_alignParentTop="true"
    android:layout_marginTop="284dp"
    android:onClick="CCC"
    android:text="登录" />




<Button
    android:id="@+id/button2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginTop="284dp"
    android:layout_marginLeft="95dp"
    android:text="取消" />






</RelativeLayout>