应用启动时列
子项的布局文件如下:
<?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="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/tx_DeviceName"
android:layout_width="0dp"
android:layout_height="20dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/tx_Time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="@+id/tx_DeviceName"
app:layout_constraintTop_toBottomOf="@+id/tx_DeviceName" />
<TextView
android:id="@+id/tx_Pm2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:hint="0"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="@+id/tx_Time"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="@+id/tx_Time" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:text="PM2.5:"
app:layout_constraintBottom_toBottomOf="@+id/tx_Pm2"
app:layout_constraintEnd_toStartOf="@+id/tx_Pm2"
app:layout_constraintTop_toTopOf="@+id/tx_Pm2" />
</android.support.constraint.ConstraintLayout>