From 3df944d30530be8dc0ea1cbe1ed4afc22eb160a5 Mon Sep 17 00:00:00 2001
From: zuoxiao <470321431@qq.com>
Date: 星期四, 06 二月 2025 11:09:48 +0800
Subject: [PATCH] 1.添加数据更新功能，确保本地没有数据时再获取基础数据 2.地图界面上添加滚动功能的控件（部分功能）
---
expand_button/src/main/java/com/example/expand_button/ExpandButton.kt | 307 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 306 insertions(+), 1 deletions(-)
diff --git a/expand_button/src/main/java/com/example/expand_button/ExpandButton.kt b/expand_button/src/main/java/com/example/expand_button/ExpandButton.kt
index 841ce47..c024329 100644
--- a/expand_button/src/main/java/com/example/expand_button/ExpandButton.kt
+++ b/expand_button/src/main/java/com/example/expand_button/ExpandButton.kt
@@ -1,14 +1,319 @@
package com.example.expand_button
-class ExpandButton {
+import android.animation.ValueAnimator
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.drawable.Drawable
+import android.text.Spannable
+import android.text.SpannableStringBuilder
+import android.text.style.ClickableSpan
+import android.util.AttributeSet
+import android.view.Gravity
+import android.view.MotionEvent
+import android.view.View
+import androidx.appcompat.widget.AppCompatTextView
+import androidx.core.content.ContextCompat
+/**
+ * 鍙睍寮�鐨勬寜閽帶浠�
+ * 鍒濆鐘舵�佹樉绀哄崟涓瓧绗︼紝鐐瑰嚮鍚庡睍寮�鏄剧ず瀹屾暣鏂囧瓧
+ * 灞曞紑鍚庣殑姣忎釜瀛楃閮藉彲浠ュ崟鐙偣鍑�
+ */
+class ExpandButton @JvmOverloads constructor(
+ context: Context,
+ attrs: AttributeSet? = null,
+ defStyleAttr: Int = 0
+) : AppCompatTextView(context, attrs, defStyleAttr) {
+ // 灞曞紑鏃舵樉绀虹殑瀹屾暣鏂囧瓧
+ private var expandedText: String = ""
+ // 鏀惰捣鏃舵樉绀虹殑鍗曚釜瀛楃
+ private var collapsedText: String = ""
+ // 褰撳墠鏄惁澶勪簬灞曞紑鐘舵��
+ private var isExpanded: Boolean = false
+ // 鍔ㄧ敾鎸佺画鏃堕棿锛岄粯璁�300姣
+ private var animationDuration: Long = 300
+ // 瀛楃鐐瑰嚮浜嬩欢鐩戝惉鍣�
+ private var onCharClickListener: ((Char, Int) -> Unit)? = null
+ // 瀛楅棿璺濓紝榛樿涓�2dp
+ private var customLetterSpacing: Float = context.resources.displayMetrics.density * 2
+ // 涓夎褰㈠浘鏍�
+ private val triangleDrawable: Drawable = ContextCompat.getDrawable(
+ context,
+ R.drawable.ic_triangle
+ )!!.mutate()
+ // 鍥炬爣鏃嬭浆瑙掑害
+ private var triangleRotation = 0f
+ // 涓夎褰㈠浘鏍囦笌鏂囧瓧鐨勯棿璺濓紝榛樿涓�8dp
+ private var triangleMargin: Float = 3 * context.resources.displayMetrics.density
+ init {
+ // 璇诲彇鑷畾涔夊睘鎬�
+ context.theme.obtainStyledAttributes(
+ attrs,
+ R.styleable.ExpandButton,
+ defStyleAttr,
+ 0
+ ).apply {
+ try {
+ customLetterSpacing = getDimension(R.styleable.ExpandButton_letterSpacing, customLetterSpacing)
+ expandedText = getString(R.styleable.ExpandButton_expandedText) ?: ""
+ collapsedText = getString(R.styleable.ExpandButton_collapsedText) ?: ""
+ animationDuration = getInteger(R.styleable.ExpandButton_animDuration, 300).toLong()
+ triangleMargin = getDimension(R.styleable.ExpandButton_triangleMargin, triangleMargin)
+ } finally {
+ recycle()
+ }
+ }
+ // 璁剧疆鍒濆鏂囨湰鍜屽搴�
+ if (collapsedText.isNotEmpty()) {
+ text = collapsedText
+ post {
+ // 纭繚鍒濆瀹藉害涓烘敹璧风姸鎬佺殑瀹藉害
+ layoutParams = layoutParams.apply {
+ width = paint.measureText(collapsedText).toInt() + paddingLeft + paddingRight
+ }
+ }
+ }
+ // 璁剧疆鏂囨湰鍙偣鍑伙紝浠呭湪鏀惰捣鐘舵�佹椂鍝嶅簲鐐瑰嚮灞曞紑
+ setOnClickListener {
+ if (!isExpanded) {
+ toggleExpand()
+ }
+ }
+ // 娣诲姞瑙︽懜浜嬩欢澶勭悊
+ setOnTouchListener { _, event ->
+ when (event.action) {
+ MotionEvent.ACTION_DOWN -> {
+ // 妫�鏌ョ偣鍑绘槸鍚﹀湪涓夎褰㈠浘鏍囧尯鍩熷唴
+ if (isClickOnTriangle(event.x)) {
+ toggleExpand()
+ return@setOnTouchListener true
+ }
+ }
+ }
+ false
+ }
+ // 璁剧疆宸﹁竟璺濓紝涓哄浘鏍囩暀鍑虹┖闂�
+ compoundDrawablePadding = triangleMargin.toInt()
+ setPadding(
+ (16 * context.resources.displayMetrics.density + triangleMargin).toInt(), // 宸﹁竟璺濆鍔狅紝涓哄浘鏍囩暀绌洪棿
+ paddingTop,
+ paddingRight,
+ paddingBottom
+ )
+
+ // 璁剧疆鍗曡鏄剧ず锛岄槻姝㈤珮搴﹀彉鍖�
+ maxLines = 1
+ isSingleLine = true
+
+ // 璁剧疆鏂囧瓧鍨傜洿灞呬腑
+ gravity = Gravity.CENTER_VERTICAL
+ }
+
+ override fun onDraw(canvas: Canvas) {
+ // 淇濆瓨鐢诲竷鐘舵��
+ canvas.save()
+
+ // 璁＄畻鍥炬爣浣嶇疆
+ val iconSize = triangleDrawable.intrinsicWidth
+ val iconLeft = paddingLeft - iconSize - compoundDrawablePadding
+ val iconTop = (height - iconSize) / 2
+
+ // 璁剧疆鍥炬爣杈圭晫
+ triangleDrawable.setBounds(
+ iconLeft,
+ iconTop,
+ iconLeft + iconSize,
+ iconTop + iconSize
+ )
+
+ // 鏃嬭浆鐢诲竷
+ canvas.rotate(
+ triangleRotation,
+ (iconLeft + iconSize / 2).toFloat(),
+ (iconTop + iconSize / 2).toFloat()
+ )
+
+ // 缁樺埗鍥炬爣
+ triangleDrawable.draw(canvas)
+
+ // 鎭㈠鐢诲竷鐘舵��
+ canvas.restore()
+
+ super.onDraw(canvas)
+ }
+
+ /**
+ * 璁剧疆瀛楅棿璺�
+ * @param spacing 闂磋窛鍊硷紙鍍忕礌锛�
+ */
+ fun setCustomLetterSpacing(spacing: Float) {
+ this.customLetterSpacing = spacing
+ if (isExpanded) {
+ setExpandedClickableText()
+ }
+ }
+
+ /**
+ * 璁剧疆灞曞紑鍜屾敹璧锋椂鏄剧ず鐨勬枃瀛�
+ * @param expanded 灞曞紑鏃舵樉绀虹殑瀹屾暣鏂囧瓧
+ * @param collapsed 鏀惰捣鏃舵樉绀虹殑鍗曚釜瀛楃
+ */
+ fun setExpandText(expanded: String, collapsed: String) {
+ this.expandedText = expanded
+ this.collapsedText = collapsed
+ text = collapsedText
+ }
+
+ /**
+ * 璁剧疆鍗曚釜瀛楃鐐瑰嚮鐩戝惉鍣�
+ * @param listener 鐐瑰嚮鍥炶皟锛屽弬鏁颁负琚偣鍑荤殑瀛楃鍜屼綅缃�
+ * char: 琚偣鍑荤殑瀛楃
+ * position: 瀛楃鍦ㄦ枃鏈腑鐨勪綅缃紙浠�0寮�濮嬶級
+ */
+ fun setOnCharClickListener(listener: (char: Char, position: Int) -> Unit) {
+ this.onCharClickListener = listener
+ }
+
+ /**
+ * 璁剧疆灞曞紑/鏀惰捣鍔ㄧ敾鐨勬寔缁椂闂�
+ * @param duration 鍔ㄧ敾鎸佺画鏃堕棿锛堟绉掞級
+ */
+ fun setAnimationDuration(duration: Long) {
+ this.animationDuration = duration
+ }
+
+ /**
+ * 鍒囨崲灞曞紑/鏀惰捣鐘舵��
+ * 浣跨敤ValueAnimator瀹炵幇瀹藉害鍔ㄧ敾鍜屽浘鏍囨棆杞�
+ */
+ private fun toggleExpand() {
+ isExpanded = !isExpanded
+
+ // 璁＄畻鏀惰捣鍜屽睍寮�鐘舵�佺殑瀹藉害
+ val collapsedWidth = paint.measureText(collapsedText).toInt() + paddingLeft + paddingRight
+ val expandedWidth = calculateExpandedWidth()
+
+ // 鍒涘缓瀹藉害鍔ㄧ敾
+ ValueAnimator.ofInt(
+ if (isExpanded) collapsedWidth else expandedWidth,
+ if (isExpanded) expandedWidth else collapsedWidth
+ ).apply {
+ duration = animationDuration
+ addUpdateListener { animator ->
+ layoutParams = layoutParams.apply {
+ width = animator.animatedValue as Int
+ }
+ requestLayout()
+ }
+ start()
+ }
+
+ // 鍒涘缓鍥炬爣鏃嬭浆鍔ㄧ敾
+ ValueAnimator.ofFloat(
+ if (isExpanded) 0f else 180f,
+ if (isExpanded) 180f else 0f
+ ).apply {
+ duration = animationDuration
+ addUpdateListener { animator ->
+ triangleRotation = animator.animatedValue as Float
+ invalidate() // 閲嶇粯浠ユ洿鏂板浘鏍囨棆杞�
+ }
+ start()
+ }
+
+ // 鏇存柊鏂囨湰
+ if (isExpanded) {
+ setExpandedClickableText()
+ } else {
+ text = collapsedText
+ }
+ }
+
+ /**
+ * 璁＄畻灞曞紑鍚庣殑鎬诲搴�
+ */
+ private fun calculateExpandedWidth(): Int {
+ val spaceWidth = paint.measureText(" ") * (customLetterSpacing / 10)
+ // 璁＄畻鎵�鏈夊瓧绗︾殑鎬诲搴�
+ val textWidth = expandedText.fold(0f) { acc, char ->
+ acc + paint.measureText(char.toString())
+ }
+ // 璁＄畻闂磋窛鐨勬�诲搴︼紙瀛楃鏁伴噺鍑�1涓棿璺濓級
+ val spacesWidth = spaceWidth * (expandedText.length - 1)
+ return (textWidth + spacesWidth).toInt() + paddingLeft + paddingRight
+ }
+
+ /**
+ * 璁剧疆灞曞紑鍚庣殑鍙偣鍑绘枃鏈�
+ */
+ private fun setExpandedClickableText() {
+ val builder = SpannableStringBuilder()
+ expandedText.forEachIndexed { index, char ->
+ // 娣诲姞瀛楃
+ builder.append(char)
+
+ // 涓哄瓧绗﹁缃偣鍑讳簨浠�
+ val clickableSpan = object : ClickableSpan() {
+ override fun onClick(view: View) {
+ onCharClickListener?.invoke(char, index)
+ }
+
+ override fun updateDrawState(ds: android.text.TextPaint) {
+ super.updateDrawState(ds)
+ // 绉婚櫎涓嬪垝绾�
+ ds.isUnderlineText = false
+ // 淇濇寔鍘熷鏂囧瓧棰滆壊
+ ds.color = currentTextColor
+ }
+ }
+ builder.setSpan(
+ clickableSpan,
+ builder.length - 1,
+ builder.length,
+ Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
+ )
+
+ // 鍙湪闈炴渶鍚庝竴涓瓧绗﹀悗娣诲姞绌烘牸浣滀负闂磋窛
+ if (index < expandedText.length - 1) {
+ builder.append(" ".repeat((customLetterSpacing / 10).toInt()))
+ }
+ }
+
+ text = builder
+ // 鍚敤LinkMovementMethod浠ュ搷搴擟lickableSpan鐨勭偣鍑讳簨浠�
+ movementMethod = android.text.method.LinkMovementMethod.getInstance()
+ }
+
+ /**
+ * 鍒ゆ柇鐐瑰嚮鏄惁鍦ㄤ笁瑙掑舰鍥炬爣鍖哄煙鍐�
+ */
+ private fun isClickOnTriangle(x: Float): Boolean {
+ val iconSize = triangleDrawable.intrinsicWidth
+ val iconLeft = paddingLeft - iconSize - compoundDrawablePadding
+ return x <= paddingLeft && x >= iconLeft
+ }
+
+ /**
+ * 璁剧疆涓夎褰㈠浘鏍囦笌鏂囧瓧鐨勯棿璺�
+ * @param margin 闂磋窛鍊硷紙鍍忕礌锛�
+ */
+ fun setTriangleMargin(margin: Float) {
+ this.triangleMargin = margin
+ compoundDrawablePadding = margin.toInt()
+ setPadding(
+ (16 * context.resources.displayMetrics.density + margin).toInt(),
+ paddingTop,
+ paddingRight,
+ paddingBottom
+ )
+ }
}
\ No newline at end of file
--
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