Trình chỉnh sửa Bố cục mới trong Android Studio 2.2 tiếp tục hiển thị lỗi này trên các chế độ xem như EditText và Buttons. Vui lòng giúp đỡ. Ngoài ra, bất kỳ liên kết nào giúp tham gia với bố cục ràng buộc mới sẽ được đánh giá cao.
mã:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
android:id="@+id/activity_main"
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="com.set.email.MainActivity"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="81dp">
<TextView
android:text="To:"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:layout_editor_absoluteX="7dp"
tools:layout_editor_absoluteY="4dp"
android:id="@+id/textTo"/>
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="24dp"
android:id="@+id/editTo"
android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium"/>
<EditText
android:layout_width="384dp"
android:layout_height="42dp"
android:inputType="textPersonName"
android:ems="10"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="94dp"
android:id="@+id/editSubject"
android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium"/>
<EditText
android:layout_width="384dp"
android:layout_height="273dp"
android:inputType="textPersonName"
android:ems="10"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="179dp"
android:id="@+id/editMessage"
app:layout_constraintLeft_toLeftOf="@+id/activity_main"
tools:layout_constraintLeft_creator="50"
android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium"/>
<Button
android:text="Send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:layout_editor_absoluteX="140dp"
tools:layout_editor_absoluteY="454dp"
android:id="@+id/btnSend"
app:layout_constraintLeft_toLeftOf="@+id/editMessage"
tools:layout_constraintLeft_creator="0"
app:layout_constraintRight_toRightOf="@+id/activity_main"
android:layout_marginEnd="16dp"
tools:layout_constraintRight_creator="0"
android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium"/>
</android.support.constraint.ConstraintLayout>