• Android Splash实现

    1、创建Activity

    1. package com.wsy.knowledge.ui.splash
    2.  
    3.  
    4. import android.animation.Animator
    5. import android.animation.AnimatorListenerAdapter
    6. import android.annotation.SuppressLint
    7. import android.os.Build
    8. import android.os.Looper
    9. import android.util.Log
    10. import androidx.annotation.RequiresApi
    11. import com.alibaba.android.arouter.facade.annotation.Route
    12. import com.wsy.knowledge.common.arouter.ArouterUrl
    13. import com.wsy.knowledge.common.ui.component.BaseActivity
    14. import com.wsy.knowledge.databinding.ActivityNativeSplashBinding
    15. import com.wsy.knowledge.ui.homepage.HomePageActivity
    16.  
    17.  
    18. @SuppressLint("CustomSplashScreen")
    19. @Route(path = ArouterUrl.native_splash)
    20. class NativeSplashActivity : BaseActivity() {
    21.     private lateinit var binding: ActivityNativeSplashBinding
    22.  
    23.     override fun getLayoutId() {
    24.         binding = ActivityNativeSplashBinding.inflate(layoutInflater)
    25.         setContentView(binding.root)
    26.     }
    27.  
    28.     override fun initData() {
    29.     }
    30.  
    31.     @RequiresApi(Build.VERSION_CODES.O)
    32.     override fun init() {
    33.         setFAFStatusBar()
    34.         binding.animLogo.apply {
    35.             addOffsetAnimListener(object : AnimatorListenerAdapter() {
    36.                 override fun onAnimationEnd(animation: Animator) {
    37.                     Log.d("AnimLogoView", "Offset anim end")
    38.                 }
    39.             })
    40.             addGradientAnimListener(object : AnimatorListenerAdapter() {
    41.                 override fun onAnimationEnd(animation: Animator) {
    42.                     Log.d("AnimLogoView", "Gradient anim end")
    43.                     startActivity(HomePageActivity::class.java, true)
    44.                 }
    45.             })
    46.         }
    47.         Looper.myQueue().addIdleHandler {
    48.             binding.animLogo.startAnimation()
    49.             false
    50.         }
    51.     }
    52.  
    53.  
    54.  
    55. }

     2、XML文件

    1. "1.0" encoding="utf-8"?>
    2. "http://schemas.android.com/apk/res/android"
    3.     xmlns:app="http://schemas.android.com/apk/res-auto"
    4.     xmlns:tools="http://schemas.android.com/tools"
    5.     android:layout_width="match_parent"
    6.     android:layout_height="match_parent"
    7.     tools:context=".ui.splash.NativeSplashActivity"
    8.     android:background="@color/blue_2A6FAF"
    9.     tools:ignore="MissingDefaultResource">
    10.     
    11.         android:id="@+id/anim_logo"
    12.         android:layout_width="match_parent"
    13.         android:layout_height="@dimen/sp_200"
    14.         app:layout_constraintTop_toBottomOf="@+id/splashImg"
    15.         app:autoPlay="false"
    16.         app:gradientAnimDuration="2000"
    17.         app:gradientColor="@color/blue_2A6FAF"
    18.         app:logoName="@string/app_name"
    19.         app:offsetAnimDuration="2000"
    20.         app:showGradient="true"
    21.         app:textColor="@color/white"
    22.         app:textPadding="3dp"
    23.         app:textSize="@dimen/sp_40"
    24.         />
    25.     
    26.         android:id="@+id/splashImg"
    27.         app:layout_constraintLeft_toLeftOf="parent"
    28.         app:layout_constraintRight_toRightOf="parent"
    29.         app:layout_constraintTop_toTopOf="parent"
    30.         android:layout_marginBottom="@dimen/sp_200"
    31.         android:src="@drawable/launch_second"
    32.         android:layout_marginTop="@dimen/sp_200"
    33.         android:layout_width="wrap_content"
    34.         android:layout_height="wrap_content"/>
    35.     
    36.         app:layout_constraintLeft_toLeftOf="parent"
    37.         app:layout_constraintRight_toRightOf="parent"
    38.         app:layout_constraintBottom_toBottomOf="parent"
    39.         android:layout_marginBottom="@dimen/sp_20"
    40.         android:text="@string/search_service"
    41.         android:textSize="@dimen/sp_14"
    42.         android:textColor="@color/color_999"
    43.         android:gravity="center"
    44.         android:layout_width="match_parent"
    45.         android:layout_height="wrap_content"
    46.         />

     3、AnimationLogoView

    1. package com.wsy.knowledge.common.ui.view
    2.  
    3. import android.animation.Animator
    4. import android.animation.AnimatorListenerAdapter
    5. import android.animation.PointFEvaluator
    6. import android.animation.ValueAnimator
    7. import android.animation.ValueAnimator.AnimatorUpdateListener
    8. import android.annotation.SuppressLint
    9. import android.content.Context
    10. import android.graphics.*
    11. import android.text.TextUtils
    12. import android.util.AttributeSet
    13. import android.util.Log
    14. import android.util.SparseArray
    15. import android.view.View
    16. import android.view.animation.AccelerateDecelerateInterpolator
    17. import com.wsy.knowledge.R
    18.  
    19. class AnimationLogoView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : View(context, attrs, defStyleAttr) {
    20.  
    21.     private val mLogoTexts = SparseArray()
    22.     private val mQuietPoints = SparseArray()
    23.     private val mRandomPoints = SparseArray()
    24.     private var mOffsetAnimator: ValueAnimator? = null
    25.     private var mGradientAnimator: ValueAnimator? = null
    26.     private var mPaint: Paint? = null
    27.     private var mTextPadding: Int
    28.     private var mTextColor: Int
    29.     private var mTextSize: Float
    30.     private var mOffsetAnimProgress = 0f
    31.     private var mOffsetDuration: Int
    32.     private var isOffsetAnimEnd = false
    33.     private var mGradientDuration: Int
    34.     private var mLinearGradient: LinearGradient? = null
    35.     private var mGradientColor: Int
    36.     private var mGradientMatrix: Matrix? = null
    37.     private var mMatrixTranslate = 0
    38.     private val isAutoPlay: Boolean
    39.     private var mWidth = 0
    40.     private var mHeight = 0
    41.     private var isShowGradient: Boolean
    42.     private val mLogoOffset: Int
    43.     private var mGradientListener: Animator.AnimatorListener? = null
    44.  
    45.     companion object {
    46.         private const val DEFAULT_LOGO = "Animation"
    47.         private const val DEFAULT_TEXT_PADDING = 10
    48.         private const val ANIM_LOGO_DURATION = 1500
    49.         private const val ANIM_LOGO_GRADIENT_DURATION = 1500
    50.         private const val ANIM_LOGO_TEXT_SIZE = 30f
    51.         private const val ANIM_LOGO_TEXT_COLOR = Color.BLACK
    52.         private const val ANIM_LOGO_GRADIENT_COLOR = Color.YELLOW
    53.     }
    54.  
    55.     init {
    56.         val ta = context.obtainStyledAttributes(attrs, R.styleable.AnimationLogoView)
    57.         var logoName = ta.getString(R.styleable.AnimationLogoView_logoName)
    58.         isAutoPlay = ta.getBoolean(R.styleable.AnimationLogoView_autoPlay, true)
    59.         isShowGradient = ta.getBoolean(R.styleable.AnimationLogoView_showGradient, false)
    60.         mOffsetDuration = ta.getInt(R.styleable.AnimationLogoView_offsetAnimDuration, ANIM_LOGO_DURATION)
    61.         mGradientDuration = ta.getInt(R.styleable.AnimationLogoView_gradientAnimDuration, ANIM_LOGO_GRADIENT_DURATION)
    62.         mTextColor = ta.getColor(R.styleable.AnimationLogoView_textColor, ANIM_LOGO_TEXT_COLOR)
    63.         mGradientColor = ta.getColor(R.styleable.AnimationLogoView_gradientColor, ANIM_LOGO_GRADIENT_COLOR)
    64.         mTextPadding = ta.getDimensionPixelSize(R.styleable.AnimationLogoView_textPadding, DEFAULT_TEXT_PADDING)
    65.         mTextSize = ta.getDimension(R.styleable.AnimationLogoView_textSize, ANIM_LOGO_TEXT_SIZE)
    66.         mLogoOffset = ta.getDimensionPixelOffset(R.styleable.AnimationLogoView_verticalOffset, 0)
    67.         ta.recycle()
    68.         if (TextUtils.isEmpty(logoName)) {
    69.             logoName = DEFAULT_LOGO
    70.         }
    71.         fillLogoTextArray(logoName)
    72.         initPaint()
    73.         initOffsetAnimation()
    74.     }
    75.  
    76.     private fun fillLogoTextArray(logoName: String?) {
    77.         if (TextUtils.isEmpty(logoName)) {
    78.             return
    79.         }
    80.         if (mLogoTexts.size() > 0) {
    81.             mLogoTexts.clear()
    82.         }
    83.         for (i in logoName!!.indices) {
    84.             mLogoTexts.put(i, logoName[i].toString())
    85.         }
    86.     }
    87.  
    88.     private fun initPaint() {
    89.         mPaint=Paint().apply {
    90.             isAntiAlias = true
    91.             style = Paint.Style.FILL
    92.             textSize = mTextSize
    93.             color = mTextColor
    94.         }
    95.     }
    96.  
    97.     private fun initOffsetAnimation() {
    98.         if (mOffsetAnimator == null) {
    99.             mOffsetAnimator = ValueAnimator.ofFloat(0f, 1f).apply {
    100.                 interpolator = AccelerateDecelerateInterpolator()
    101.                 addUpdateListener(AnimatorUpdateListener { animation ->
    102.                     if (mQuietPoints.size() <= 0 || mRandomPoints.size() <= 0) {
    103.                         return@AnimatorUpdateListener
    104.                     }
    105.                     mOffsetAnimProgress = animation.animatedValue as Float
    106.                     invalidate()
    107.                 })
    108.                 addListener(object : AnimatorListenerAdapter() {
    109.                     override fun onAnimationEnd(animation: Animator) {
    110.                         if (mGradientAnimator != null && isShowGradient) {
    111.                             isOffsetAnimEnd = true
    112.                             mPaint?.shader = mLinearGradient
    113.                             mGradientAnimator!!.start()
    114.                         }
    115.                     }
    116.                 })
    117.                 duration = mOffsetDuration.toLong()
    118.             }
    119.         }
    120.     }
    121.  
    122.     override fun onAttachedToWindow() {
    123.         super.onAttachedToWindow()
    124.         if (visibility == VISIBLE && isAutoPlay) {
    125.             mOffsetAnimator?.start()
    126.         }
    127.     }
    128.  
    129.     override fun onDetachedFromWindow() {
    130.         if (mOffsetAnimator != null && mOffsetAnimator!!.isRunning) {
    131.             mOffsetAnimator!!.cancel()
    132.         }
    133.         if (mGradientAnimator != null && mGradientAnimator!!.isRunning) {
    134.             mGradientAnimator!!.cancel()
    135.         }
    136.         super.onDetachedFromWindow()
    137.     }
    138.  
    139.  
    140.     fun addOffsetAnimListener(listener: Animator.AnimatorListener?) {
    141.         mOffsetAnimator!!.addListener(listener)
    142.     }
    143.  
    144.     fun addGradientAnimListener(listener: Animator.AnimatorListener?) {
    145.         mGradientListener = listener
    146.     }
    147.  
    148.     /**
    149.      * 开启动画
    150.      */
    151.     fun startAnimation() {
    152.         if (visibility == VISIBLE) {
    153.             if (mOffsetAnimator!!.isRunning) {
    154.                 mOffsetAnimator!!.cancel()
    155.             }
    156.             isOffsetAnimEnd = false
    157.             mOffsetAnimator!!.start()
    158.         } else {
    159.             Log.w("AnimLogoView", "The view is not visible, not to play the animation .")
    160.         }
    161.     }
    162.  
    163.     override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
    164.         super.onSizeChanged(w, h, oldw, oldh)
    165.         mWidth = w
    166.         mHeight = h
    167.         initLogoCoordinate()
    168.         initGradientAnimation()
    169.     }
    170.  
    171.     private fun initLogoCoordinate() {
    172.         if (mWidth == 0 || mHeight == 0) {
    173.             return
    174.         }
    175.         val fontMetrics = mPaint!!.fontMetrics
    176.         val baseY = mHeight / 2 - fontMetrics.top / 2 - fontMetrics.bottom / 2
    177.         val centerY = baseY + mLogoOffset
    178.         var totalLength = 0f
    179.         for (i in 0 until mLogoTexts.size()) {
    180.             val str = mLogoTexts[i]
    181.             val currentLength = mPaint!!.measureText(str)
    182.             totalLength += if (i != mLogoTexts.size() - 1) {
    183.                 currentLength + mTextPadding
    184.             } else {
    185.                 currentLength
    186.             }
    187.         }
    188.         check(totalLength <= mWidth) { "The text of logoName is too large that this view can not display all text" }
    189.         var startX = (mWidth - totalLength) / 2
    190.         if (mQuietPoints.size() > 0) {
    191.             mQuietPoints.clear()
    192.         }
    193.         for (i in 0 until mLogoTexts.size()) {
    194.             val str = mLogoTexts[i]
    195.             val currentLength = mPaint!!.measureText(str)
    196.             mQuietPoints.put(i, PointF(startX, centerY))
    197.             startX += currentLength + mTextPadding
    198.         }
    199.         if (mRandomPoints.size() > 0) {
    200.             mRandomPoints.clear()
    201.         }
    202.         for (i in 0 until mLogoTexts.size()) {
    203.             mRandomPoints.put(i, PointF(Math.random().toFloat() * mWidth, Math.random().toFloat() * mHeight))
    204.         }
    205.     }
    206.  
    207.     private fun initGradientAnimation() {
    208.         if (mWidth == 0 || mHeight == 0) {
    209.             return
    210.         }
    211.         if (mGradientAnimator == null) {
    212.             mGradientAnimator = ValueAnimator.ofInt(0, 2 * mWidth).apply {
    213.                 if (mGradientListener != null) {
    214.                    addListener(mGradientListener)
    215.                 }
    216.                 addUpdateListener { animation ->
    217.                     mMatrixTranslate = animation.animatedValue as Int
    218.                     invalidate()
    219.                 }
    220.  
    221.                 mLinearGradient = LinearGradient(-mWidth.toFloat(), 0f, 0f, 0f, intArrayOf(mTextColor, mGradientColor, mTextColor), floatArrayOf(0f, 0.5f, 1f), Shader.TileMode.CLAMP)
    222.                 mGradientMatrix = Matrix()
    223.                 duration = mGradientDuration.toLong()
    224.             }
    225.  
    226.         }
    227.     }
    228.  
    229.     @SuppressLint("DrawAllocation")
    230.     override fun onDraw(canvas: Canvas) {
    231.         if (!isOffsetAnimEnd) {
    232.             mPaint!!.alpha = 255f.coerceAtMost(255 * mOffsetAnimProgress + 100).toInt()
    233.             for (i in 0 until mQuietPoints.size()) {
    234.                 val point=PointFEvaluator().evaluate(mOffsetAnimProgress,mRandomPoints[i],mQuietPoints[i])
    235.                 canvas.drawText(mLogoTexts[i],point.x, point.y, mPaint!!)
    236.             }
    237.         } else {
    238.             for (i in 0 until mQuietPoints.size()) {
    239.                 val quietP = mQuietPoints[i]
    240.                 canvas.drawText(mLogoTexts[i], quietP.x, quietP.y, mPaint!!)
    241.             }
    242.             mGradientMatrix!!.setTranslate(mMatrixTranslate.toFloat(), 0f)
    243.             mLinearGradient!!.setLocalMatrix(mGradientMatrix)
    244.         }
    245.     }
    246.  
    247.  
    248. }

     

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  • 原文地址：https://blog.csdn.net/qq_41264674/article/details/132855930