第二天 登录界面

activity_edit.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="30dp"
    android:gravity="center"

    >
    <View
        android:id="@+id/view_7"
        android:layout_width="200dp"
        android:layout_marginLeft="50dp"
        android:layout_height="200dp"
        android:background="@drawable/icon_xcg2"/>
    <EditText android:id="@+id/edit_1"
        android:layout_marginTop="30dp"
        android:layout_height="50dp"
        android:layout_width="300dp"
        android:textSize="20dp"
        android:textColor="#848484"
        android:inputType="text"
        android:paddingLeft="5dp"
        android:background="@drawable/edit"
        android:drawableLeft="@drawable/icon_uesr"
        android:layout_below="@id/view_7"
        android:drawablePadding="3dp"
        android:hint="学号/职工号"
        />
    <EditText android:id="@+id/edit_2"
        android:layout_height="50dp"
        android:layout_width="300dp"
        android:textSize="20dp"
        android:layout_below="@+id/edit_1"
        android:textColor="#848484"
        android:inputType="textPassword"
        android:layout_marginTop="20dp"
        android:paddingLeft="5dp"
        android:background="@drawable/edit"
        android:drawableLeft="@drawable/icon_pw"
        android:drawablePadding="3dp"
        android:hint="密码"
        />
    <RadioGroup android:id="@+id/radio_1"
        android:layout_marginTop="20dp"
        android:layout_below="@id/edit_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <RadioButton
            android:id="@+id/rb_1"
            android:layout_width="60dp"
            android:layout_height="30dp"
            android:text="学生"
            android:gravity="center"
            android:button="@null"
            android:checked="true"
            android:background="@drawable/radio"
            android:layout_marginLeft="50dp"
            android:textSize="20dp"
            android:textColor="#585858"
            />
        <RadioButton
            android:id="@+id/rb_2"
            android:layout_width="60dp"
            android:layout_height="30dp"
            android:text="老师"
            android:gravity="center"
            android:button="@null"
            android:checked="true"
            android:background="@drawable/radio"
            android:layout_marginLeft="50dp"
            android:textSize="20dp"
            android:textColor="#585858"
            />
    </RadioGroup>
    <Button

        android:id="@+id/btn_3"
        android:layout_width="200dp"
        android:layout_height="50dp"
        android:layout_below="@+id/radio_1"
        android:layout_marginLeft="50dp"
        android:layout_marginTop="30dp"
        android:background="@drawable/bg_btn"
        android:drawableLeft="@drawable/icon_login2"
        android:text="登录"
        android:textSize="20dp"
        />

    <Button
        android:id="@+id/btn_4"
        android:layout_height="50dp"
        android:layout_marginTop="20dp"
        android:layout_marginLeft="50dp"
        android:layout_width="200dp"
        android:layout_below="@+id/btn_3"
        android:text="注册"
        android:textSize="20dp"
        android:drawableLeft="@drawable/icon_zhuce"
        android:background="@drawable/bg_btn"
        />

</RelativeLayout>

bg_btn.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_pressed="true">
    <shape>
        <solid android:color="#04B4AE"/>
        <corners android:radius="60dp"/>
    </shape>

    </item>
    <item android:state_pressed="false">
        <shape>
            <solid android:color="#81F7F3"/>
            <corners android:radius="60dp"/>
        </shape>

    </item>

</selector>

radio.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:state_checked="true">
            <shape>
                <solid android:color="#DF7401"/>
                <corners android:radius="5dp"/>
            </shape>
        </item>
        <item android:state_checked="false">
            <shape>
                <stroke
                    android:width="1dp"
                    android:color="#DF7401"/>
                <corners android:radius="5dp"/>
            </shape>
        </item>

</selector>

edit.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <stroke
        android:width="1dp"
        android:color="#04B4AE"/>
    <corners
        android:radius="5dp"/>

</shape>

监听事件

package com.example.homework;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class EditActivity extends AppCompatActivity {
    private Button mbtnEdit;
    private EditText mEdit;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_edit);
        mbtnEdit=findViewById(R.id.btn_3);
        mbtnEdit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(EditActivity.this,"登录成功！",Toast.LENGTH_SHORT).show();
                Intent intent=new Intent(EditActivity.this,TextViewActivity.class);
                startActivity(intent);
            }
        });
        mEdit=findViewById(R.id.edit_1);
        mEdit.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });
    }
}