这是我做的一个简陋的登录界面:
它没有任何其他的功能,只是一个界面
它的代码如下:
<?xml version="1.0" encoding="utf-8"?><android.support.constraint.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:background="@drawable/p1"
tools:context=“net.hw.helloworld.MainActivity”>
<TextView
android:layout_width="112dp"
android:layout_height="36dp"
android:text="用户登录"
android:textSize="26sp"
android:textColor="#ffff0000"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.577"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.335" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="用户:"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.462"
app:layout_constraintHorizontal_bias="0.401" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="密码:"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.545"
app:layout_constraintHorizontal_bias="0.401" />
<EditText
android:id="@+id/editText"
android:layout_width="79dp"
android:layout_height="23dp"
android:ems="10"
android:inputType="textPersonName"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintHorizontal_bias="0.655"
app:layout_constraintVertical_bias="0.455" />
<EditText
android:id="@+id/editText2"
android:layout_width="79dp"
android:layout_height="23dp"
android:ems="10"
android:inputType="textPersonName"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintHorizontal_bias="0.655"
app:layout_constraintVertical_bias="0.54" />
<Button
android:layout_width="81dp"
android:layout_height="39dp"
android:text="登录"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.407"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.668" />
<Button
android:layout_width="81dp"
android:layout_height="39dp"
android:text="取消"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.756"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.668" />
</android.support.constraint.ConstraintLayout>