android imageview垂直方向移动
时间: 2023-07-22 17:25:52 浏览: 124
要在Android中实现ImageView垂直方向移动,可以使用帧布局(FrameLayout)和属性动画(ObjectAnimator)来实现。
首先,在布局文件中将ImageView放置在FrameLayout中,如下所示:
```xml
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/image" />
</FrameLayout>
```
接着,在代码中使用ObjectAnimator来实现垂直方向的移动。例如,将ImageView向下移动100像素的代码如下所示:
```java
ImageView imageView = findViewById(R.id.image_view);
ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "translationY", 0f, 100f);
animator.setDuration(1000); // 设置动画时长为1秒
animator.start(); // 开始动画
```
这里的ObjectAnimator对象会对ImageView对象的translationY属性进行动画操作,从初始值0f到目标值100f。通过设置动画时长和调用start()方法,就可以让ImageView在垂直方向上向下移动了。
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