<?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"
tools:context=".MainActivity">
<Button
android:id="@+id/button"
android:background="#000000"
android:layout_width="80dp"
android:layout_height="80dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_marginStart="86dp"
android:layout_marginLeft="86dp"
android:background="#000FF0"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.499" />
<Button
android:id="@+id/button3"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#00DA00"
android:text="Button"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent" />
<Button
android:id="@+id/button4"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#000000"
android:text="Button"
app:layout_constraintBottom_toTopOf="@+id/button2"
app:layout_constraintEnd_toStartOf="@+id/button3" />
<Button
android:id="@+id/button5"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#000000"
android:text="Button"
app:layout_constraintBottom_toTopOf="@+id/button6"
app:layout_constraintStart_toEndOf="@+id/button3" />
<Button
android:id="@+id/button6"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#00DA00"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="@+id/button"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button7"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_marginStart="86dp"
android:layout_marginLeft="86dp"
android:background="#00DA00"
android:text="Button"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button2" />
<Button
android:id="@+id/button8"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#00FFF0"
android:text="Button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button" />
<Button
android:id="@+id/button9"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#000000"
android:text="Button"
app:layout_constraintStart_toEndOf="@+id/button8"
app:layout_constraintTop_toBottomOf="@+id/button6" />
</androidx.constraintlayout.widget.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="match_parent">
<ImageView
android:id="@+id/photo"
android:layout_width="80dp"
android:layout_height="80dp"
android:src="@drawable/ic_launcher_background"
android:layout_centerHorizontal="true"
android:layout_marginTop="200dp"
android:layout_marginBottom="30dp"></ImageView>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/photo"
android:maxLength="15"
android:layout_marginTop="13dp"
android:text="账号："/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/photo"
android:layout_toRightOf="@id/textView1"
android:hint="请输入您的账号"></EditText>
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/textView1"
android:maxLength="20"
android:layout_marginTop="25dp"
android:text="密码：" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/textView1"
android:layout_toRightOf="@id/textView2"
android:layout_marginTop="10dp"
android:hint="请输入您的密码"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button"
android:text="登录"
android:textColor="#478595"
android:layout_below="@id/textView2"
android:layout_marginTop="20dp"
android:layout_marginLeft="120dp"
android:onClick="click"
android:layout_centerHorizontal="true">
</Button>
</RelativeLayout>
