ConstraintSet：Listview將無法正常移動

Question

不管我在Constraintset.connect中寫入來改變位置，它總是停留在原來的位置（我希望它從屏幕外部移動到屏幕左側），此時視圖完全位於屏幕內部，只剩下左邊的約束）。 謝謝。

的ListViewItem：

<?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="#202020"> 

    <ImageView 
     android:id="@+id/listItemImageView" 
     android:layout_width="60dp" 
     android:layout_height="60dp" 
     android:layout_alignParentEnd="true" 
     android:layout_alignParentRight="true" 
     android:layout_alignParentTop="true" 
     android:layout_marginEnd="40dp" 
     android:layout_marginRight="16dp" 
     android:layout_marginTop="16dp" 
     android:paddingBottom="16dp" 
     app:layout_constraintRight_toRightOf="parent" 
     app:layout_constraintTop_toTopOf="parent" 
     app:srcCompat="@mipmap/ic_launcher" /> 

    <TextView 
     android:id="@+id/listItemTextView" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignBottom="@+id/listItemImageView" 
     android:layout_centerHorizontal="true" 
     android:layout_marginBottom="8dp" 
     android:layout_marginEnd="17dp" 
     android:layout_marginRight="17dp" 
     android:layout_marginTop="8dp" 
     android:layout_toLeftOf="@+id/listItemImageView" 
     android:layout_toStartOf="@+id/listItemImageView" 
     android:fontFamily="casual" 
     android:text="This Text will change" 
     android:textAlignment="viewStart" 
     android:textColor="@android:color/holo_green_dark" 
     android:textSize="18sp" 
     android:textStyle="bold" 
     app:layout_constraintBottom_toBottomOf="@+id/listItemImageView" 
     app:layout_constraintRight_toLeftOf="@+id/listItemImageView" 
     app:layout_constraintTop_toTopOf="parent" 
     app:layout_constraintVertical_bias="0.5" /> 
</android.support.constraint.ConstraintLayout> 

主要activity.xml

<?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="@android:color/black" 
    android:id="@+id/urlayout" 
    tools:context="com.example.me.gesturelaunchertest.MainActivity"> 
    <!-- Ab fadeduration sachen für I usw. --> 
    <android.gesture.GestureOverlayView 
     android:id="@+id/gesOverlay" 
     android:layout_width="0dp" 
     android:layout_height="0dp" 
     android:layout_gravity="center_horizontal" 

     android:eventsInterceptionEnabled="true" 
     android:fadeDuration="300" 
     android:gestureStrokeAngleThreshold="0" 
     android:gestureStrokeLengthThreshold="300.0" 
     android:gestureStrokeSquarenessThreshold="0" 
     android:gestureColor="@android:color/white" 
     android:gestureStrokeWidth="40.0" 
     android:uncertainGestureColor="@android:color/darker_gray" 
     app:layout_constraintBottom_toBottomOf="parent" 
     app:layout_constraintLeft_toLeftOf="parent" 
     app:layout_constraintRight_toRightOf="parent" 
     app:layout_constraintTop_toTopOf="parent"> 

    </android.gesture.GestureOverlayView> 

    <ListView 
     android:id="@+id/applistview" 
     android:layout_width="240dp" 
     android:layout_height="match_parent" 
     android:layout_gravity="right" 
     android:layout_marginBottom="8dp" 
     android:layout_marginTop="8dp" 
     android:background="@android:color/transparent" 
     android:choiceMode="singleChoice" 
     android:divider="@android:color/transparent" 
     android:dividerHeight="20dp" 
     app:layout_constraintBottom_toBottomOf="parent" 
     app:layout_constraintTop_toTopOf="parent" 
     app:layout_constraintVertical_bias="0.0" 
     android:layout_marginRight="113dp" 
     app:layout_constraintRight_toRightOf="parent" /> 


</android.support.constraint.ConstraintLayout> 

MainActivity：

  TransitionManager.beginDelayedTransition(constraintLayout); 
      constraintSet=new ConstraintSet(); 

      constraintSet.clone(constraintLayout); 

      constraintSet.connect(applistview.getId(), ConstraintSet.LEFT, constraintLayout.getId(), ConstraintSet.RIGHT, 110); 

      constraintSet.applyTo(constraintLayout); 

Answer 1

似乎是一個問題與ConstraintSet.LEFT和ConstraintSet.RIGHT不工作。請參閱錯誤跟蹤器上的this issue。

嘗試使用ConstraintSet.START和ConstraintSet.END代替：

constraintSet.connect(applistview.getId(), ConstraintSet.START, 
     constraintLayout.getId(), ConstraintSet.END, 110); 

我希望這有助於。