作业9

  1 ?xml version="1.0" encoding="utf-8"?>
  2 <RelativeLayout
  3     xmlns:android="http://schemas.android.com/apk/res/android"
  4     xmlns:app="http://schemas.android.com/apk/res-auto"
  5     xmlns:tools="http://schemas.android.com/tools"
  6     android:layout_width="match_parent"
  7     android:layout_height="match_parent"
  8     tools:context=".MainActivity"
  9     android:background="#ECE4E4"
 10 
 11 
 12     >
 13 
 14     <ImageView
 15         android:id="@+id/imageView"
 16         android:layout_width="80sp"
 17         android:layout_height="80sp"
 18         app:srcCompat="@drawable/1"
 19         android:layout_centerHorizontal="true"
 20         android:layout_marginTop="100sp"
 21         />
 22 <LinearLayout
 23         android:id="@+id/lzh"
 24         android:layout_width="match_parent"
 25         android:layout_height="wrap_content"
 26         android:layout_below="@+id/imageView"
 27         android:layout_marginTop="50dp"
 28         android:background="#FFFFFF"
 29         android:layout_marginLeft="20sp"
 30         android:layout_marginRight="20sp"
 31         android:orientation="horizontal">
 32 
 33         <TextView
 34             android:id="@+id/id"
 35             android:layout_width="wrap_content"
 36             android:layout_height="wrap_content"
 37             android:padding="15dp"
 38             android:text="账号:"
 39             android:textStyle="bold"
 40             android:textSize="20sp" />
 41 
 42         <EditText
 43             android:id="@+id/et1"
 44             android:layout_width="match_parent"
 45             android:layout_height="match_parent"
 46             android:background="#FFFFFF"
 47             android:padding="10dp">
 48 
 49         </EditText>
 50     </LinearLayout>
 51 
 52     <LinearLayout
 53         android:id="@+id/mm"
 54         android:layout_width="match_parent"
 55         android:layout_height="wrap_content"
 56         android:layout_below="@+id/lzh"
 57         android:layout_marginTop="50dp"
 58         android:background="#FFFFFF"
 59         android:layout_marginLeft="20sp"
 60         android:layout_marginRight="20sp"
 61         android:orientation="horizontal">
 62 
 63         <TextView
 64             android:id="@+id/pw"
 65             android:layout_width="wrap_content"
 66             android:layout_height="wrap_content"
 67             android:padding="15dp"
 68             android:text="密码:"
 69             android:textStyle="bold"
 70             android:textSize="20sp" />
 71         <EditText
 72             android:layout_width="match_parent"
 73             android:layout_height="match_parent"
 74             android:password="true"
 75             android:id="@+id/et2"
 76             android:padding="10dp"
 77             android:background="#FFFFFF">
 78 
 79         </EditText>
 80     </LinearLayout>
 81 
 82     <Button
 83         android:id="@+id/qr"
 84         android:layout_width="match_parent"
 85         android:layout_height="wrap_content"
 86         android:text="登录"
 87         android:textStyle="bold"
 88         android:textColor="#FFFFFF"
 89         android:textSize="30sp"
 90         android:background="#2196F3"
 91         android:layout_below="@+id/mm"
 92         android:layout_marginTop="60dp"
 93         android:layout_marginLeft="40dp"
 94         android:layout_marginRight="40dp"
 95 
 96         />
 97     <Button
 98         android:id="@+id/jz"
 99         android:layout_centerHorizontal="true"
100         android:layout_below="@+id/qr"
101         android:layout_marginTop="20sp"
102         android:layout_width="wrap_content"
103         android:layout_height="wrap_content"
104         android:text="记住账号密码"
105         android:onClick="jz"
106         >
107 
108     </Button>
109 
110     <TextView
111         android:id="@+id/tv"
112         android:layout_width="wrap_content"
113         android:layout_height="wrap_content"
114         android:layout_below="@+id/qr"
115         android:layout_centerHorizontal="true"
116         android:layout_marginTop="50dp"
117         android:text=""
118         android:textColor="#59D683"
119         android:textSize="20sp"
120         android:textStyle="bold" />
121 </RelativeLayout>

package com.example.a9;

import androidx.appcompat.app.AppCompatActivity;
import android.content.SharedPreferences;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        EditText zh=findViewById(R.id.et1);
        EditText mm=findViewById(R.id.et2);
        SharedPreferences s=getSharedPreferences("data",MODE_PRIVATE);
        String d_zh=s.getString("zh","");
        String d_mm=s.getString("mm","");
        Toast.makeText(this,d_zh+"密码"+d_mm,Toast.LENGTH_SHORT).show();
        zh.setText(d_zh);
        mm.setText(d_mm);
    }

    public void jz(View view) {
        EditText zh=findViewById(R.id.et1);
        EditText mm=findViewById(R.id.et2);
        String z=zh.getText().toString();
        String m=mm.getText().toString();

        SharedPreferences s=getSharedPreferences("data",MODE_PRIVATE);
        SharedPreferences.Editor editor=s.edit();
        editor.putString("zh",z);
        editor.putString("mm",m);
        editor.commit();
        Toast.makeText(this,"已经记住账号信息",Toast.LENGTH_SHORT).show();

    }
}