在特定的框架位置使用MotionLayout旋转文本视图,可以通过以下步骤实现:
<androidx.constraintlayout.motion.widget.MotionLayout
android:id="@+id/motionLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello, MotionLayout!"
android:textSize="24sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.motion.widget.MotionLayout>
<?xml version="1.0" encoding="utf-8"?>
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:motion="http://schemas.android.com/apk/res-auto">
<Transition
motion:constraintSetEnd="@+id/end"
motion:constraintSetStart="@+id/start"
motion:duration="1000">
<KeyFrameSet>
<KeyAttribute
motion:framePosition="0"
motion:target="@id/textView"
motion:rotationZ="0" />
<KeyAttribute
motion:framePosition="100"
motion:target="@id/textView"
motion:rotationZ="360" />
</KeyFrameSet>
</Transition>
<ConstraintSet android:id="@+id/start">
<!-- Define the initial state of the text view -->
</ConstraintSet>
<ConstraintSet android:id="@+id/end">
<!-- Define the final state of the text view -->
</ConstraintSet>
</MotionScene>
MotionLayout motionLayout = findViewById(R.id.motionLayout);
motionLayout.setTransitionListener(new MotionLayout.TransitionListener() {
@Override
public void onTransitionStarted(MotionLayout motionLayout, int i, int i1) {
// Transition started
}
@Override
public void onTransitionChange(MotionLayout motionLayout, int i, int i1, float v) {
// Transition in progress
}
@Override
public void onTransitionCompleted(MotionLayout motionLayout, int i) {
// Transition completed
}
@Override
public void onTransitionTrigger(MotionLayout motionLayout, int i, boolean b, float v) {
// Transition trigger
}
});
motionLayout.loadLayoutDescription(R.xml.scene);
这样,当MotionLayout启动时,文本视图将按照MotionScene文件中定义的动画行为进行旋转。
腾讯云相关产品和产品介绍链接地址:
领取专属 10元无门槛券
手把手带您无忧上云