162 lines
6.9 KiB
Kotlin
162 lines
6.9 KiB
Kotlin
package com.gallery.free.wallpaper
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import android.annotation.SuppressLint
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import android.graphics.drawable.Drawable
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import android.util.Log
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import android.view.LayoutInflater
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import android.view.View
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import android.view.ViewGroup
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import android.widget.ImageView
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import androidx.recyclerview.widget.RecyclerView
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import com.bumptech.glide.Glide
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import com.bumptech.glide.load.DataSource
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import com.bumptech.glide.load.engine.GlideException
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import com.bumptech.glide.request.RequestListener
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import com.bumptech.glide.request.target.CustomTarget
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import com.bumptech.glide.request.target.Target
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class WpPagerAdapter(
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private val wallpaperItems: List<WpItem>,
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private val loadListener: OnImageLoadListener? = null // 添加加载监听器
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) : RecyclerView.Adapter<WpPagerAdapter.ViewHolder>() {
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// 添加加载监听接口
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interface OnImageLoadListener {
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fun onImageLoadSuccess(position: Int)
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fun onImageLoadFailed(position: Int, error: Throwable)
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}
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class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
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val imageView: ImageView = itemView.findViewById(R.id.pager_image_view)
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val loadingProgress: ImageView = itemView.findViewById(R.id.loading_progress)
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// 添加标识，防止错乱的UI更新
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var currentPosition: Int = -1
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}
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override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
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val view = LayoutInflater.from(parent.context)
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.inflate(R.layout.item_wp_pager, parent, false)
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return ViewHolder(view)
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}
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@SuppressLint("RecyclerView")
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override fun onBindViewHolder(holder: ViewHolder, position: Int) {
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val wallpaperItem = wallpaperItems[position]
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Log.d("WallpaperPagerAdapter", "onBindViewHolder position=$position")
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// 设置当前position标识
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holder.currentPosition = position
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// 1. 立即显示loading
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holder.loadingProgress.visibility = View.VISIBLE
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holder.loadingProgress.bringToFront()
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// 2. 立即显示smallUrl（使用单独的Target）
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val smallUrlTarget = object : CustomTarget<Drawable>() {
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override fun onResourceReady(
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resource: android.graphics.drawable.Drawable,
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transition: com.bumptech.glide.request.transition.Transition<in android.graphics.drawable.Drawable>?
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) {
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Log.d("WallpaperPagerAdapter", "smallUrl加载完成 position=$position")
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// 确保还是当前position
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if (holder.currentPosition == position) {
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holder.imageView.setImageDrawable(resource)
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}
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}
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override fun onLoadCleared(placeholder: android.graphics.drawable.Drawable?) {
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// 清理资源
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}
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override fun onLoadFailed(errorDrawable: android.graphics.drawable.Drawable?) {
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Log.e("WallpaperPagerAdapter", "smallUrl加载失败 position=$position")
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if (holder.currentPosition == position && holder.itemView.isAttachedToWindow) {
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holder.imageView.setBackgroundColor(R.color.light_gray)
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holder.imageView.setImageResource(R.drawable.ic_loadingpic_failed)
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holder.imageView.scaleType = ImageView.ScaleType.CENTER
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}
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}
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}
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// 先清除可能的错误状态
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holder.imageView.setBackgroundColor(0x00000000)
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holder.imageView.scaleType = ImageView.ScaleType.CENTER_CROP
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Glide.with(holder.itemView.context)
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.load(wallpaperItem.smallUrl)
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.dontAnimate()
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.skipMemoryCache(true) // 跳过内存缓存，确保每次都触发回调
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.into(smallUrlTarget)
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// 3. 加载fullUrl
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Glide.with(holder.itemView.context)
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.load(wallpaperItem.fullUrl)
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.dontAnimate()
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.diskCacheStrategy(com.bumptech.glide.load.engine.DiskCacheStrategy.ALL)
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.listener(object : RequestListener<android.graphics.drawable.Drawable> {
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override fun onLoadFailed(
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e: GlideException?,
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model: Any?,
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target: Target<android.graphics.drawable.Drawable>?,
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isFirstResource: Boolean
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): Boolean {
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Log.e("WallpaperPagerAdapter", "fullUrl加载失败 position=$position: ${e?.message}")
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if (holder.currentPosition == position && holder.itemView.isAttachedToWindow) {
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holder.loadingProgress.visibility = View.GONE
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// 自定义错误显示：设置灰色背景和居中图标
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holder.imageView.setBackgroundColor(R.color.light_gray)
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holder.imageView.setImageResource(R.drawable.ic_loadingpic_failed)
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holder.imageView.scaleType = ImageView.ScaleType.CENTER
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}
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// 通知加载失败
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loadListener?.onImageLoadFailed(position, e ?: Exception("图片加载失败"))
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return true
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}
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override fun onResourceReady(
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resource: android.graphics.drawable.Drawable?,
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model: Any?,
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target: Target<android.graphics.drawable.Drawable>?,
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dataSource: DataSource?,
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isFirstResource: Boolean
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): Boolean {
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Log.d("WallpaperPagerAdapter", "fullUrl加载完成 position=$position")
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if (holder.currentPosition == position && holder.itemView.isAttachedToWindow) {
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holder.loadingProgress.visibility = View.GONE
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// 清除可能的错误状态
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holder.imageView.setBackgroundColor(0x00000000) // 透明背景
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holder.imageView.scaleType = ImageView.ScaleType.CENTER_CROP // 恢复原来的缩放模式
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}
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// 通知加载成功
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loadListener?.onImageLoadSuccess(position)
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return false
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}
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})
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.into(holder.imageView)
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}
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override fun onViewRecycled(holder: ViewHolder) {
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super.onViewRecycled(holder)
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// 清理ImageView，Glide会自动取消相关请求
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Glide.with(holder.itemView.context).clear(holder.imageView)
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// 重置标识
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holder.currentPosition = -1
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}
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override fun getItemCount(): Int = wallpaperItems.size
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// 添加重新加载方法
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fun retryLoadImage(position: Int) {
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notifyItemChanged(position)
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}
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fun clearAllCache() {
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// 如果确实需要清除所有缓存，可以在Activity中调用但通常不需要手动清理
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// Glide.get(context).clearMemory()
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}
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} |