implementation 'com.android.support:appcompat-v7:22.2.0'
程式包android.support.v4.util不存在
uj5u.com熱心網友回復：
Step-1: Open Project in AndroidStudio3.3 or above, wait until loading of the project completes.Step-2: Right click 'app' -> Refactor -> Migrate to AnroidX
Step-3: Review the changes in AndroidStudio console below and click 'Do Refactor'
uj5u.com熱心網友回復：
import android.util.LruCache;//import androidx.core.util.LruCache;
匯入包換下貌似就沒有錯誤了
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標籤：Android
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