第三次作业

<?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="#009688"
    tools:context=".MainActivity">
    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:text="登录"
        android:textSize="30dp"
        android:textColor="#FCF8F7"
        android:background="#2196F3"
        tools:layout_editor_absoluteX="165dp"
        tools:layout_editor_absoluteY="224dp"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:onClick="qq"
        />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/imageView"
        android:layout_marginTop="90dp"
        android:background="#FFFFFF"
        android:orientation="horizontal">

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

        <EditText
            android:id="@+id/mima"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="输入密码"
            android:textColorHint="#1CB9B3"


            android:layout_marginLeft="20dp" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/imageView"
        android:layout_marginTop="30dp"
        android:background="#FFFFFF"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="账号：" />

        <EditText
            android:id="@+id/zh"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="输入账号"
            android:textColorHint="#358691"

            android:layout_marginLeft="20dp" />
    </LinearLayout>
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_marginTop="50dp"
        android:layout_centerHorizontal="true"
        app:srcCompat="@drawable/ty" />

</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;

public class MainActivity extends AppCompatActivity {
    EditText zh;
    EditText mima;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        zh=findViewById(R.id.zh);
        mima=findViewById(R.id.mima);
    }

    public void qq(View view) {
        String z=zh.getText().toString();
        String m=mima.getText().toString();
        if (z.equals("1234")){
            if (m.equals("1234")){

                Toast.makeText(MainActivity.this,"登陆成功",Toast.LENGTH_SHORT).show();
            }else {

                Toast.makeText(MainActivity.this,"密码错误",Toast.LENGTH_SHORT).show();

            }

        }else{

            Toast.makeText(MainActivity.this,"登陆失败",Toast.LENGTH_SHORT).show();
        }


    }
}