Android仿华为天气实现旋转风车动画效果
龙旋
共 1886字,需浏览 4分钟
·
2021-11-18 02:23
旋转风车实现效果:
实现方案
对于风车上面旋转部分,采用一张图,通过安卓属性动画进行旋转。
注意点:因为是采用两张图叠加而形成的效果,所以需要注意调整两张图的相对位置,使之刚好形成风车旋转效果。
主要代码
abstract class BaseWindmillView constructor(context: Context, attrs: AttributeSet? = null) :
LinearLayout(context, attrs) {
private fun getRotateAnimation(@IntRange(from = 1, to = 10) speed: Int): RotateAnimation {
val animateTime = getAnimateTimeFromSpeed(speed)
val animation = RotateAnimation(
0f, 360f,
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f
)
animation.fillAfter = true
animation.repeatCount = Animation.INFINITE
animation.duration = animateTime
animation.interpolator = LinearInterpolator()
return animation
}
private fun getAnimateTimeFromSpeed(speed: Int): Long {
return (10 * 1000 / speed).toLong()
}
fun startRotate(@IntRange(from = 1, to = 10) speed: Int) {
getToRotateViews().forEach {
it.clearAnimation()
it.startAnimation(getRotateAnimation(speed)) }
}
abstract fun getToRotateViews(): List
}
2、DoubleWindmillView.kt
class DoubleWindmillView constructor(context: Context, attrs: AttributeSet? = null) :
BaseWindmillView(context, attrs) {
init {
LayoutInflater.from(context).inflate(R.layout.view_double_windmill, this, true)
}
override fun getToRotateViews()= listOf(windmillBladeIv,smallWindmillBladeIv)
}
3、view_double_windmill.xml
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical"
tools:background="#1E90FF">
android:id="@+id/windmillBladeIv"
android:layout_width="80dp"
android:layout_height="80dp"
android:src="@mipmap/windmill_blade" />
android:layout_width="24dp"
android:layout_height="80dp"
android:layout_marginStart="29dp"
android:layout_marginTop="32dp"
android:src="@mipmap/windmill" />
android:id="@+id/smallWindmillBladeIv"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_marginStart="50dp"
android:layout_marginTop="30dp"
android:src="@mipmap/windmill_blade" />
android:layout_width="14dp"
android:layout_height="48dp"
android:layout_marginStart="67dp"
android:layout_marginTop="50dp"
android:src="@mipmap/windmill" />
lib库集成方法
1、在工程根目录下build.gradle文件中增加jitpack仓库地址:
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
2、在app工程下build.gradle文件中增加依赖:
dependencies {
implementation 'com.github.cxyzy1:windmill:1.0.0'
}
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