作业三

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#00BCD4"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="80dp"
        android:layout_height="80dp"
        app:srcCompat="@drawable/ic_launcher_background"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="50dp"
        tools:ignore="VectorDrawableCompat" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_below="@id/imageView"
        android:layout_marginTop="40dp"
        >
        <TextView

            android:layout_height="match_parent"
            android:layout_width="wrap_content"
            android:text="账号："
            android:background="#FFEB3B"
            />
        <EditText
            android:id="@+id/zh"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#2196F3"
            />
    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_below="@id/imageView"
        android:layout_marginTop="70dp">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="密码："
        android:background="#FFEB3B"/>

    <EditText
        android:id="@+id/mm"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#2196F3"


        />
    </LinearLayout>

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="登录"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="270dp"
        android:onClick="we"/>

</RelativeLayout>

package com.example.m;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

import java.util.regex.Pattern;

public class MainActivity extends AppCompatActivity {
    EditText zh;
    EditText mm;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        zh=(EditText) findViewById(R.id.zh);
        mm=(EditText) findViewById(R.id.mm);

    }

    public void we(View view) {
        String z=zh.getText().toString();
        String m=mm.getText().toString();
        if (z.equals("123456")){
            if(m.equals("abc123")){
                Toast.makeText(MainActivity.this,"登录成功",Toast.LENGTH_SHORT).show();
            } else{
                Toast.makeText(MainActivity.this,"登录失败",Toast.LENGTH_SHORT).show();
            }

        }else{
            Toast.makeText(MainActivity.this,"账号错误",Toast.LENGTH_SHORT).show();
        }

    }
}