1、创建Activity
package com.wsy.knowledge.ui.splash
import android.animation.Animator
import android.animation.AnimatorListenerAdapter
import android.annotation.SuppressLint
import android.os.Build
import android.os.Looper
import android.util.Log
import androidx.annotation.RequiresApi
import com.alibaba.android.arouter.facade.annotation.Route
import com.wsy.knowledge.common.arouter.ArouterUrl
import com.wsy.knowledge.common.ui.component.BaseActivity
import com.wsy.knowledge.databinding.ActivityNativeSplashBinding
import com.wsy.knowledge.ui.homepage.HomePageActivity
@SuppressLint("CustomSplashScreen")
@Route(path = ArouterUrl.native_splash)
class NativeSplashActivity : BaseActivity() {
private lateinit var binding: ActivityNativeSplashBinding
override fun getLayoutId() {
binding = ActivityNativeSplashBinding.inflate(layoutInflater)
setContentView(binding.root)
}
override fun initData() {
}
@RequiresApi(Build.VERSION_CODES.O)
override fun init() {
setFAFStatusBar()
binding.animLogo.apply {
addOffsetAnimListener(object : AnimatorListenerAdapter() {
override fun onAnimationEnd(animation: Animator) {
Log.d("AnimLogoView", "Offset anim end")
}
})
addGradientAnimListener(object : AnimatorListenerAdapter() {
override fun onAnimationEnd(animation: Animator) {
Log.d("AnimLogoView", "Gradient anim end")
startActivity(HomePageActivity::class.java, true)
}
})
}
Looper.myQueue().addIdleHandler {
binding.animLogo.startAnimation()
false
}
}
}
2、XML文件
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="https://schemas.android.com/apk/res/android"
xmlns:app="https://schemas.android.com/apk/res-auto"
xmlns:tools="https://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.splash.NativeSplashActivity"
android:background="@color/blue_2A6FAF"
tools:ignore="MissingDefaultResource">
<com.wsy.knowledge.common.ui.view.AnimationLogoView
android:id="@+id/anim_logo"
android:layout_width="match_parent"
android:layout_height="@dimen/sp_200"
app:layout_constraintTop_toBottomOf="@+id/splashImg"
app:autoPlay="false"
app:gradientAnimDuration="2000"
app:gradientColor="@color/blue_2A6FAF"
app:logoName="@string/app_name"
app:offsetAnimDuration="2000"
app:showGradient="true"
app:textColor="@color/white"
app:textPadding="3dp"
app:textSize="@dimen/sp_40"
/>
<ImageView
android:id="@+id/splashImg"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginBottom="@dimen/sp_200"
android:src="@drawable/launch_second"
android:layout_marginTop="@dimen/sp_200"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="@dimen/sp_20"
android:text="@string/search_service"
android:textSize="@dimen/sp_14"
android:textColor="@color/color_999"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
3、AnimationLogoView
package com.wsy.knowledge.common.ui.view
import android.animation.Animator
import android.animation.AnimatorListenerAdapter
import android.animation.PointFEvaluator
import android.animation.ValueAnimator
import android.animation.ValueAnimator.AnimatorUpdateListener
import android.annotation.SuppressLint
import android.content.Context
import android.graphics.*
import android.text.TextUtils
import android.util.AttributeSet
import android.util.Log
import android.util.SparseArray
import android.view.View
import android.view.animation.AccelerateDecelerateInterpolator
import com.wsy.knowledge.R
class AnimationLogoView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : View(context, attrs, defStyleAttr) {
private val mLogoTexts = SparseArray<String>()
private val mQuietPoints = SparseArray<PointF>()
private val mRandomPoints = SparseArray<PointF>()
private var mOffsetAnimator: ValueAnimator? = null
private var mGradientAnimator: ValueAnimator? = null
private var mPaint: Paint? = null
private var mTextPadding: Int
private var mTextColor: Int
private var mTextSize: Float
private var mOffsetAnimProgress = 0f
private var mOffsetDuration: Int
private var isOffsetAnimEnd = false
private var mGradientDuration: Int
private var mLinearGradient: LinearGradient? = null
private var mGradientColor: Int
private var mGradientMatrix: Matrix? = null
private var mMatrixTranslate = 0
private val isAutoPlay: Boolean
private var mWidth = 0
private var mHeight = 0
private var isShowGradient: Boolean
private val mLogoOffset: Int
private var mGradientListener: Animator.AnimatorListener? = null
companion object {
private const val DEFAULT_LOGO = "Animation"
private const val DEFAULT_TEXT_PADDING = 10
private const val ANIM_LOGO_DURATION = 1500
private const val ANIM_LOGO_GRADIENT_DURATION = 1500
private const val ANIM_LOGO_TEXT_SIZE = 30f
private const val ANIM_LOGO_TEXT_COLOR = Color.BLACK
private const val ANIM_LOGO_GRADIENT_COLOR = Color.YELLOW
}
init {
val ta = context.obtainStyledAttributes(attrs, R.styleable.AnimationLogoView)
var logoName = ta.getString(R.styleable.AnimationLogoView_logoName)
isAutoPlay = ta.getBoolean(R.styleable.AnimationLogoView_autoPlay, true)
isShowGradient = ta.getBoolean(R.styleable.AnimationLogoView_showGradient, false)
mOffsetDuration = ta.getInt(R.styleable.AnimationLogoView_offsetAnimDuration, ANIM_LOGO_DURATION)
mGradientDuration = ta.getInt(R.styleable.AnimationLogoView_gradientAnimDuration, ANIM_LOGO_GRADIENT_DURATION)
mTextColor = ta.getColor(R.styleable.AnimationLogoView_textColor, ANIM_LOGO_TEXT_COLOR)
mGradientColor = ta.getColor(R.styleable.AnimationLogoView_gradientColor, ANIM_LOGO_GRADIENT_COLOR)
mTextPadding = ta.getDimensionPixelSize(R.styleable.AnimationLogoView_textPadding, DEFAULT_TEXT_PADDING)
mTextSize = ta.getDimension(R.styleable.AnimationLogoView_textSize, ANIM_LOGO_TEXT_SIZE)
mLogoOffset = ta.getDimensionPixelOffset(R.styleable.AnimationLogoView_verticalOffset, 0)
ta.recycle()
if (TextUtils.isEmpty(logoName)) {
logoName = DEFAULT_LOGO
}
fillLogoTextArray(logoName)
initPaint()
initOffsetAnimation()
}
private fun fillLogoTextArray(logoName: String?) {
if (TextUtils.isEmpty(logoName)) {
return
}
if (mLogoTexts.size() > 0) {
mLogoTexts.clear()
}
for (i in logoName!!.indices) {
mLogoTexts.put(i, logoName[i].toString())
}
}
private fun initPaint() {
mPaint=Paint().apply {
isAntiAlias = true
style = Paint.Style.FILL
textSize = mTextSize
color = mTextColor
}
}
private fun initOffsetAnimation() {
if (mOffsetAnimator == null) {
mOffsetAnimator = ValueAnimator.ofFloat(0f, 1f).apply {
interpolator = AccelerateDecelerateInterpolator()
addUpdateListener(AnimatorUpdateListener { animation ->
if (mQuietPoints.size() <= 0 || mRandomPoints.size() <= 0) {
return@AnimatorUpdateListener
}
mOffsetAnimProgress = animation.animatedValue as Float
invalidate()
})
addListener(object : AnimatorListenerAdapter() {
override fun onAnimationEnd(animation: Animator) {
if (mGradientAnimator != null && isShowGradient) {
isOffsetAnimEnd = true
mPaint?.shader = mLinearGradient
mGradientAnimator!!.start()
}
}
})
duration = mOffsetDuration.toLong()
}
}
}
override fun onAttachedToWindow() {
super.onAttachedToWindow()
if (visibility == VISIBLE && isAutoPlay) {
mOffsetAnimator?.start()
}
}
override fun onDetachedFromWindow() {
if (mOffsetAnimator != null && mOffsetAnimator!!.isRunning) {
mOffsetAnimator!!.cancel()
}
if (mGradientAnimator != null && mGradientAnimator!!.isRunning) {
mGradientAnimator!!.cancel()
}
super.onDetachedFromWindow()
}
fun addOffsetAnimListener(listener: Animator.AnimatorListener?) {
mOffsetAnimator!!.addListener(listener)
}
fun addGradientAnimListener(listener: Animator.AnimatorListener?) {
mGradientListener = listener
}
/**
* 开启动画
*/
fun startAnimation() {
if (visibility == VISIBLE) {
if (mOffsetAnimator!!.isRunning) {
mOffsetAnimator!!.cancel()
}
isOffsetAnimEnd = false
mOffsetAnimator!!.start()
} else {
Log.w("AnimLogoView", "The view is not visible, not to play the animation .")
}
}
override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
super.onSizeChanged(w, h, oldw, oldh)
mWidth = w
mHeight = h
initLogoCoordinate()
initGradientAnimation()
}
private fun initLogoCoordinate() {
if (mWidth == 0 || mHeight == 0) {
return
}
val fontMetrics = mPaint!!.fontMetrics
val baseY = mHeight / 2 - fontMetrics.top / 2 - fontMetrics.bottom / 2
val centerY = baseY + mLogoOffset
var totalLength = 0f
for (i in 0 until mLogoTexts.size()) {
val str = mLogoTexts[i]
val currentLength = mPaint!!.measureText(str)
totalLength += if (i != mLogoTexts.size() - 1) {
currentLength + mTextPadding
} else {
currentLength
}
}
check(totalLength <= mWidth) { "The text of logoName is too large that this view can not display all text" }
var startX = (mWidth - totalLength) / 2
if (mQuietPoints.size() > 0) {
mQuietPoints.clear()
}
for (i in 0 until mLogoTexts.size()) {
val str = mLogoTexts[i]
val currentLength = mPaint!!.measureText(str)
mQuietPoints.put(i, PointF(startX, centerY))
startX += currentLength + mTextPadding
}
if (mRandomPoints.size() > 0) {
mRandomPoints.clear()
}
for (i in 0 until mLogoTexts.size()) {
mRandomPoints.put(i, PointF(Math.random().toFloat() * mWidth, Math.random().toFloat() * mHeight))
}
}
private fun initGradientAnimation() {
if (mWidth == 0 || mHeight == 0) {
return
}
if (mGradientAnimator == null) {
mGradientAnimator = ValueAnimator.ofInt(0, 2 * mWidth).apply {
if (mGradientListener != null) {
addListener(mGradientListener)
}
addUpdateListener { animation ->
mMatrixTranslate = animation.animatedValue as Int
invalidate()
}
mLinearGradient = LinearGradient(-mWidth.toFloat(), 0f, 0f, 0f, intArrayOf(mTextColor, mGradientColor, mTextColor), floatArrayOf(0f, 0.5f, 1f), Shader.TileMode.CLAMP)
mGradientMatrix = Matrix()
duration = mGradientDuration.toLong()
}
}
}
@SuppressLint("DrawAllocation")
override fun onDraw(canvas: Canvas) {
if (!isOffsetAnimEnd) {
mPaint!!.alpha = 255f.coerceAtMost(255 * mOffsetAnimProgress + 100).toInt()
for (i in 0 until mQuietPoints.size()) {
val point=PointFEvaluator().evaluate(mOffsetAnimProgress,mRandomPoints[i],mQuietPoints[i])
canvas.drawText(mLogoTexts[i],point.x, point.y, mPaint!!)
}
} else {
for (i in 0 until mQuietPoints.size()) {
val quietP = mQuietPoints[i]
canvas.drawText(mLogoTexts[i], quietP.x, quietP.y, mPaint!!)
}
mGradientMatrix!!.setTranslate(mMatrixTranslate.toFloat(), 0f)
mLinearGradient!!.setLocalMatrix(mGradientMatrix)
}
}
}
1、创建Activity
package com.wsy.knowledge.ui.splash
阅读背景：
Android Splash实现
来源：互联网
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