Android炫酷登录界面

来看一波图片吧

CoverEyeLogin.gif

动画效果介绍

1.当用户输入用户名时，小猫头鹰的眼睛是没有被捂住的
2.当用户输入密码时，小猫头鹰会用手捂住眼睛
3.如果用户名和密码都已经输入完毕，登录按钮会变成蓝色
4.调用第三方包来进行背景的虚化

目录结构

![%YFLX]{}7HIR$Y_QHQU7~3G.png](https://upload-images.jianshu.io/upload_images/18945157-9d12adb776ad62e9.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
这个工程会在很多XML文件里进行页面的配置，这样子才能很大程度上抽离出程序的共同部分

代码部分

MainActivity

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AnimationUtils;
import android.view.animation.RotateAnimation;
import android.view.animation.TranslateAnimation;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

import static android.content.Context.INPUT_METHOD_SERVICE;

public class MainActivity extends AppCompatActivity implements TextWatcher {

    private EditText user;
    private EditText password;
    private Button loginBtn;
    private ImageView leftArm;
    private ImageView rightArm;
    private ImageView leftHand;
    private ImageView rightHand;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initViews();
    }

    public void initViews(){
        user = findViewById(R.id.et_user);
        password = findViewById(R.id.et_password);
        loginBtn = findViewById(R.id.bt_login);
        leftArm = findViewById(R.id.iv_left_arm);
        rightArm = findViewById(R.id.iv_right_arm);
        leftHand = findViewById(R.id.iv_left_hand);
        rightHand = findViewById(R.id.iv_right_hand);

        //监听内容改变 -> 控制按钮的点击状态
        user.addTextChangedListener(this);
        password.addTextChangedListener(this);

        //监听EidtText的焦点变化 -> 控制是否需要捂住眼睛
        password.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus == true){
                    //捂住眼睛
                    close();
                }else{
                    //打开
                    open();
                }
            }
        });

    }

    /**
     * 当有控件获得焦点focus 自动弹出键盘
     * 1. 点击软键盘的enter键 自动收回键盘
     * 2. 代码控制 InputMethodManager
     *    requestFocus
     *    showSoftInput:显示键盘 必须先让这个view成为焦点requestFocus
     *
     *    hideSoftInputFromWindow 隐藏键盘
     */
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN){
            //隐藏键盘
            //1.获取系统输入的管理器
            InputMethodManager inputManager =
                    (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);

            //2.隐藏键盘
            inputManager.hideSoftInputFromWindow(user.getWindowToken(),0);

            //3.取消焦点
            View focusView = getCurrentFocus();
            if (focusView != null) {
                focusView.clearFocus(); //取消焦点
            }

            //getCurrentFocus().clearFocus();

            //focusView.requestFocus();//请求焦点
        }
        return true;
    }

    @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) {
        //判断两个输入框是否有内容
        if (user.getText().toString().length() > 0 &&
        password.getText().toString().length() > 0){
            //按钮可以点击
            loginBtn.setEnabled(true);
        }else{
            //按钮不能点击
            loginBtn.setEnabled(false);
        }
    }

    public void close(){
        //左边
        RotateAnimation lAnim = new RotateAnimation(0,170,leftArm.getWidth(),0f);
        lAnim.setDuration(500);
        lAnim.setFillAfter(true);

        leftArm.startAnimation(lAnim);

        RotateAnimation rAnim = new RotateAnimation(0, -170,0f,0f);
        rAnim.setDuration(500);
        rAnim.setFillAfter(true);

        rightArm.startAnimation(rAnim);

        TranslateAnimation down = (TranslateAnimation) AnimationUtils.loadAnimation(this,R.anim.hand_down_anim);
        leftHand.startAnimation(down);
        rightHand.startAnimation(down);
    }

    public void open(){
        //左边
        RotateAnimation lAnim = new RotateAnimation(170,0,leftArm.getWidth(),0f);
        lAnim.setDuration(500);
        lAnim.setFillAfter(true);

        leftArm.startAnimation(lAnim);

        RotateAnimation rAnim = new RotateAnimation(-170,0,0f,0f);
        rAnim.setDuration(500);
        rAnim.setFillAfter(true);

        rightArm.startAnimation(rAnim);

        TranslateAnimation up = (TranslateAnimation) AnimationUtils.loadAnimation(this,R.anim.hand_up_anim);
        leftHand.startAnimation(up);
        rightHand.startAnimation(up);
    }
}

anim--hand_down_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:toYDelta="100"
android:fromYDelta="0"
android:fillAfter="true"
android:duration="500">
</translate>

anim--hand_up_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:toYDelta="0"
    android:fromYDelta="100"
    android:fillAfter="true"
    android:duration="500">
</translate>

drawable--editview_shape.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="5dp"/>
    <stroke android:width="1dp"
        android:color="#44000000"/>
</shape>

drawable--ic_launcher_background.xml

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="108"
    android:viewportHeight="108">
    <path
        android:fillColor="#008577"
        android:pathData="M0,0h108v108h-108z" />
    <path
        android:fillColor="#00000000"
        android:pathData="M9,0L9,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,0L19,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M29,0L29,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M39,0L39,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M49,0L49,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M59,0L59,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M69,0L69,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M79,0L79,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M89,0L89,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M99,0L99,108"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,9L108,9"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,19L108,19"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,29L108,29"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,39L108,39"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,49L108,49"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,59L108,59"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,69L108,69"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,79L108,79"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,89L108,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M0,99L108,99"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,29L89,29"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,39L89,39"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,49L89,49"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,59L89,59"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,69L89,69"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M19,79L89,79"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M29,19L29,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M39,19L39,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M49,19L49,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M59,19L59,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M69,19L69,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
    <path
        android:fillColor="#00000000"
        android:pathData="M79,19L79,89"
        android:strokeWidth="0.8"
        android:strokeColor="#33FFFFFF" />
</vector>

drawable--ic_launcher_foreground.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:aapt="http://schemas.android.com/aapt"
    android:width="108dp"
    android:height="108dp"
    android:viewportWidth="108"
    android:viewportHeight="108">
    <path
        android:fillType="evenOdd"
        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
        android:strokeWidth="1"
        android:strokeColor="#00000000">
        <aapt:attr name="android:fillColor">
            <gradient
                android:endX="78.5885"
                android:endY="90.9159"
                android:startX="48.7653"
                android:startY="61.0927"
                android:type="linear">
                <item
                    android:color="#44000000"
                    android:offset="0.0" />
                <item
                    android:color="#00000000"
                    android:offset="1.0" />
            </gradient>
        </aapt:attr>
    </path>
    <path
        android:fillColor="#FFFFFF"
        android:fillType="nonZero"
        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
        android:strokeWidth="1"
        android:strokeColor="#00000000" />
</vector>

drawable--input_bg_shape.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="10dp"/>
</shape>

drawable--login_btn_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!--无法点击状态 灰色背景 圆角矩形-->
    <item android:state_enabled="false">
        <shape android:shape="rectangle">
            <corners android:radius="5dp"/>
            <solid android:color="#666666"/>
        </shape>
    </item>

    <!--正常状态 蓝色背景 圆角矩形-->
    <item >
        <shape android:shape="rectangle">
            <corners android:radius="5dp"/>
            <solid android:color="#39A4F9"/>
        </shape>
    </item>
</selector>

layout--activity_main.xml

<?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"
    tools:context=".MainActivity">

    <!--背景图片-->
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/bg"
        android:scaleType="fitXY"/>

    <!--添加虚化层-->
    <io.alterac.blurkit.BlurLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:blk_fps="0"
        app:blk_blurRadius="25"/>

    <!--猫头鹰-->
    <RelativeLayout
        android:layout_width="300dp"
        android:layout_height="200dp"
        android:layout_centerHorizontal="true"
        android:layout_alignTop="@id/bg"
        android:layout_marginTop="-100dp"
        >

        <!--头像-->
        <ImageView
            android:id="@+id/iv_head"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/owl_head"
            android:layout_centerHorizontal="true"/>

        <!--手掌-->
        <ImageView
            android:id="@+id/iv_left_hand"
            android:layout_width="50dp"
            android:layout_height="60dp"
            android:src="@drawable/icon_hand"
            android:layout_alignParentLeft="true"
            android:layout_alignBottom="@id/iv_head"
            android:layout_marginBottom="-20dp"
            android:layout_marginLeft="10dp"/>

        <ImageView
            android:id="@+id/iv_right_hand"
            android:layout_width="50dp"
            android:layout_height="60dp"
            android:src="@drawable/icon_hand"
            android:layout_alignParentRight="true"
            android:layout_alignBottom="@id/iv_head"
            android:layout_marginBottom="-20dp"
            android:layout_marginRight="10dp"/>

        <!--翅膀-->
        <ImageView
            android:id="@+id/iv_left_arm"
            android:layout_width="65dp"
            android:layout_height="40dp"
            android:src="@drawable/arm_left"
            android:layout_below="@id/iv_head"
            android:layout_alignParentLeft="true"
            android:layout_marginLeft="20dp"/>

        <ImageView
            android:id="@+id/iv_right_arm"
            android:layout_width="65dp"
            android:layout_height="40dp"
            android:src="@drawable/arm_right"
            android:layout_below="@id/iv_head"
            android:layout_alignParentRight="true"
            android:layout_marginRight="20dp"/>
    </RelativeLayout>

    <!--输入框背景-->
    <io.alterac.blurkit.BlurLayout
        android:id="@+id/bg"
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:background="@drawable/input_bg_shape"
        android:layout_centerInParent="true"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        app:blk_fps="0"
        app:blk_blurRadius="20"/>


    <!--添加标题和输入框视图-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:layout_centerInParent="true"
        android:orientation="vertical"
        android:padding="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginLeft="20dp">

        <!--标题-->
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="炫酷登录"
            android:textColor="#999999"
            android:textSize="20dp"
            android:textAlignment="center"/>

        <!--添加输入框-->
        <EditText
            android:id="@+id/et_user"
            style="@style/EditTextStyle"
            android:inputType="text"
            android:hint="请输入用户名"/>

        <EditText
            android:id="@+id/et_password"
            style="@style/EditTextStyle"
            android:inputType="textPassword"
            android:hint="请输入密码"/>

        <!--添加按钮-->
        <Button
            android:id="@+id/bt_login"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:text="登录"
            android:textColor="#ffffff"
            android:layout_marginTop="20dp"
            android:enabled="false"
            android:background="@drawable/login_btn_selector"/>
    </LinearLayout>

</RelativeLayout>

values--editview_style.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!--app中的标题：字体 字号 颜色 -->
    <!--共同拥有的东西-->
    <style name="EditTextStyle">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">50dp</item>
        <item name="android:background">@drawable/editview_shape</item>
        <item name="android:layout_marginTop">20dp</item>
        <item name="android:drawableLeft">@drawable/iconfont_user</item>
        <item name="android:paddingLeft">7dp</item>
        <item name="android:drawablePadding">7dp</item>
        <item name="android:textSize">20sp</item>
        <item name="android:maxLines">1</item>
    </style>
</resources>

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