Android 以编程方式创建视图的ConstraintSet中的setHorizontalBias
我有一个Android 以编程方式创建视图的ConstraintSet中的setHorizontalBias,android,imageview,android-constraintlayout,Android,Imageview,Android Constraintlayout,我有一个ConstraintLayout: <android.support.constraint.ConstraintLayout android:id="@+id/fragment_live_icons_layout" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent"
ConstraintLayout
:
<android.support.constraint.ConstraintLayout
android:id="@+id/fragment_live_icons_layout"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/fragment_live_clock"
app:layout_constraintBottom_toTopOf="@+id/fragment_live_progress_bar_time"
android:background="@color/futbolinAzul"
android:layout_width="match_parent"
android:layout_marginLeft="@dimen/margin_n"
android:layout_marginRight="@dimen/margin_n"
android:layout_height="@dimen/height_sm"/>
iconsImages.addView(imageView);
ConstraintSet constraintSet = new ConstraintSet();
constraintSet.clone(iconImages);
之后,我将imageView
添加到ConstraintLayout
:
<android.support.constraint.ConstraintLayout
android:id="@+id/fragment_live_icons_layout"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/fragment_live_clock"
app:layout_constraintBottom_toTopOf="@+id/fragment_live_progress_bar_time"
android:background="@color/futbolinAzul"
android:layout_width="match_parent"
android:layout_marginLeft="@dimen/margin_n"
android:layout_marginRight="@dimen/margin_n"
android:layout_height="@dimen/height_sm"/>
iconsImages.addView(imageView);
ConstraintSet constraintSet = new ConstraintSet();
constraintSet.clone(iconImages);
然后我创建了一个ConstraintSet
,并克隆了ConstraintLayout
:
<android.support.constraint.ConstraintLayout
android:id="@+id/fragment_live_icons_layout"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/fragment_live_clock"
app:layout_constraintBottom_toTopOf="@+id/fragment_live_progress_bar_time"
android:background="@color/futbolinAzul"
android:layout_width="match_parent"
android:layout_marginLeft="@dimen/margin_n"
android:layout_marginRight="@dimen/margin_n"
android:layout_height="@dimen/height_sm"/>
iconsImages.addView(imageView);
ConstraintSet constraintSet = new ConstraintSet();
constraintSet.clone(iconImages);
最后,我使用变量minutes
设置水平偏差:
constraintSet.connect(imageView.getId(), ConstraintSet.TOP, iconsImages.getId(), ConstraintSet.TOP, 0);
constraintSet.connect(imageView.getId(), ConstraintSet.LEFT, iconsImages.getId(), ConstraintSet.LEFT, 0);
// constraintSet.setVerticalBias(imageView.getId(), 0.5f);
constraintSet.setHorizontalBias(imageView.getId(), (float)minutes/90);
constraintSet.applyTo(iconsImages);
TransitionManager.beginDelayedTransition(iconsImages);
其中minutes
变量中的值通常在15到80之间。问题是所有的imageView
都是在ConstraintLayout
的开始处设置的
像这样:
似乎缺少正确的约束。“偏移”必须应用两侧约束
constraintSet.connect(imageView.getId(), ConstraintSet.RIGHT, iconsImages.getId(), ConstraintSet.RIGHT, 0);