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在RecyclerView中,onCreateViewHolder方法將根據需要創建新的視圖持有者。我知道它會被調用多次,因爲列表中的項目可以放在屏幕上。但是,由於某種奇怪的原因,當我向下滾動我的RecyclableList時,會再次調用onCreateViewHolder。爲什麼它會創建一個新的viewHolder?在什麼情況下會查看待辦事項?我認爲它只需要調用一次。RecyclerView - onCreateViewHolders在被刮下時被多次調用
的logcat:
09-27 16:39:20.805 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.814 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.817 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.818 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.822 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.825 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.826 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
當我向下滾動,這些被調用:
09-27 16:39:20.827 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.828 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED
09-27 16:39:20.830 8603-8603/teamtreehouse.com.myapplication D/testHourViewHolder: I AM INVOKED