Android自定义view实现滑动解锁效果

本文实例为大家分享了Android自定义view实现滑动解锁的具体代码，供大家参考，具体内容如下

近期需要做一个类似屏幕滑动解锁的功能，右划开始，左划暂停。

/** * Desc 自定义滑动解锁View * Author ZY * Mail sunnyfor98@gmail.com * Date 2021/5/17 11:52 */@SuppressLint('ClickableViewAccessibility')class SlideSwitchButton : ViewGroup { constructor(context: Context?) : this(context, null) constructor(context: Context?, attrs: AttributeSet?) : this(context, attrs, 0) constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : this(context,attrs,defStyleAttr, 0 ) constructor(context: Context?,attrs: AttributeSet?,defStyleAttr: Int,defStyleRes: Int ) : super(context, attrs, defStyleAttr, defStyleRes) var duration = 300 var isOpen = false var scrollView: ScrollView? = null var onSwitchListener: ((isOpen: Boolean) -> Unit)? = null private var itemHeight = 0 private var itemPadding = 0 private var parentWidth = 0 private val stopImgView: ImageView by lazy {ImageView(context).apply { setImageResource(R.drawable.f1_svg_btn_stop)} } private val startImgView: ImageView by lazy {ImageView(context).apply { setImageResource(R.drawable.f1_svg_btn_start)} } private val hintView: TextView by lazy {TextView(context).apply { setTextSize(TypedValue.COMPLEX_UNIT_PX, resources.getDimension(R.dimen.dp_14)) compoundDrawablePadding = resources.getDimension(R.dimen.dp_5).toInt() setTextColor(Color.parseColor('#727b9f'))} } init {setBackgroundResource(R.drawable.f1_sel_bg_slide_btn)addView(hintView)updateHint()addView(stopImgView)addView(startImgView)var x = 0startImgView.setOnTouchListener { v, event -> when (event.action) {MotionEvent.ACTION_DOWN -> { scrollView?.requestDisallowInterceptTouchEvent(true) x = event.x.toInt()}MotionEvent.ACTION_UP -> { if (startImgView.x < (parentWidth - startImgView.width) / 2) {play(false) } else {play(true) } scrollView?.requestDisallowInterceptTouchEvent(false)}MotionEvent.ACTION_MOVE -> { val lastX = event.x - x if (startImgView.x + lastX > parentWidth - itemPadding - startImgView.width) {return@setOnTouchListener true } if (startImgView.x + lastX < itemPadding) {return@setOnTouchListener true } startImgView.x += lastX} } return@setOnTouchListener true} } override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {super.onMeasure(widthMeasureSpec, heightMeasureSpec)setMeasuredDimension(widthMeasureSpec, resources.getDimension(R.dimen.dp_90).toInt())itemPadding = resources.getDimension(R.dimen.dp_5).toInt()itemHeight = resources.getDimension(R.dimen.dp_80).toInt()parentWidth = MeasureSpec.getSize(widthMeasureSpec) } override fun onLayout(changed: Boolean, l: Int, t: Int, r: Int, b: Int) {stopImgView.layout( itemPadding, itemPadding, itemPadding + itemHeight, itemPadding + itemHeight)startImgView.layout( itemPadding, itemPadding, itemPadding + itemHeight, itemPadding + itemHeight)val len = hintView.paint.measureText(hintView.text.toString()) + resources.getDimension(R.dimen.dp_24)val let = (r - len) / 2hintView.layout( let.toInt(), resources.getDimension(R.dimen.dp_35).toInt(), (let + len).toInt(), resources.getDimension(R.dimen.dp_55).toInt()) } /** * flag tue为开始 false为停止 */ private fun play(flag: Boolean) {val mStart = startImgView.xval mEnd = if (flag) { parentWidth - itemPadding * 2 - startImgView.width.toFloat()} else { stopImgView.x - itemPadding}val animatorOBJ = ObjectAnimator.ofFloat(startImgView, 'translationX', mStart, mEnd)animatorOBJ.duration = duration.toLong()animatorOBJ.addListener(object : Animator.AnimatorListener { override fun onAnimationRepeat(animation: Animator?) { } override fun onAnimationEnd(animation: Animator?) {updateHint(flag)if (flag != isOpen) { isOpen = flag onSwitchListener?.invoke(flag)} } override fun onAnimationCancel(animation: Animator?) { } override fun onAnimationStart(animation: Animator?) { }})animatorOBJ.start() } private fun updateHint(lock: Boolean = false) {val icon = if (lock) { hintView.text = '滑动停止' ResourcesCompat.getDrawable(resources, R.drawable.f1_svg_left_arrow, null)} else { hintView.text = '滑动开始' ResourcesCompat.getDrawable(resources, R.drawable.f1_svg_right_arrow, null)}icon?.setBounds( 0, 0, resources.getDimension(R.dimen.dp_14).toInt(), resources.getDimension(R.dimen.dp_12).toInt())if (lock) { hintView.setCompoundDrawables(icon, null, null, null)} else { hintView.setCompoundDrawables(null, null, icon, null)} } fun stop() {play(false) } fun start() {play(true) }}

这里需要注意一点：页面过长时，ScrollView和SlideSwitchButton滑动事件会冲突，所以需要吧scrollView传进来

/** * Desc 自定义滑动解锁View * Author ZY * Mail sunnyfor98@gmail.com * Date 2021/5/28 17:48 */class SlideSwitchButtonActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)setContentView(R.layout.f1_act_main)btn_start.scrollView = scrollViewbtn_start.onSwitchListener = { if (it) {Toast.makeText(this,'开始操作',Toast.LENGTH_LONG).show()btn_start.start() } else {Toast.makeText(this,'停止操作',Toast.LENGTH_LONG).show()btn_start.stop() }} }}

之前封装了一版ZyFrame框架，集工具类、自定义组件、网络请求框架一体，感觉用起来有些厚重，接下来会抽时间做拆分，ZyFrame保留网络请求功能，ZyUI专做自定义组件，ZyTool专做工具类，大概就这样。

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