<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:orientation="vertical"
tools:context=".MainActivity"
android:background="@drawable/这边自己加图片,图片放左侧drawable"
android:alpha="0.9"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="254dp"
android:orientation="vertical"
android:gravity="center"
>
<EditText
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:hint="用户名"
android:inputType="textPersonName" />
<EditText
android:id="@+id/pass"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:hint="密码"
android:inputType="textPersonName" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:gravity="center"
>
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="登录"
/>
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="忘记密码" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
</LinearLayout>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
//登录验证代码
@Override
public void onClick(View v) {
// 通过AlertDialog.Builder这个类来实例化我们的一个AlertDialog的对象
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
// 设置Title的图标
builder.setIcon(R.drawable.这边自己加图片,图片放左侧drawable);
// 设置Title的内容
String mname = "账号";
String mpass = "密码";
String user = name.getText().toString().trim();
String pwd = pass.getText().toString().trim();
if (user.equals(mname) && pwd.equals(mpass)) {
Toast.makeText(this, "登录成功", Toast.LENGTH_SHORT).show();
builder.setTitle("登录成功");
builder.show(); // 显示出该对话框
} else {
Toast.makeText(this, "您的输入有误,请重试", Toast.LENGTH_SHORT).show();
builder.setTitle("您的输入有误,请重试");
builder.show(); // 显示出该对话框
}
}