Could not resolve com.android.support.constraint:constraint-layout:1.1.3
開發android時報Could not resolve com.android.support.constraint:constraint-layout:1.1.3這個錯誤,實際上是因為androidx放棄使用support包。
Google 2018 IO 大會推出了 Android新的擴充套件庫 AndroidX,用於替換原來的 Android擴充套件庫,將原來的android.*替換成androidx.*;只有包名和Maven工件名受到影響,原來的類名,方法名和欄位名不會更改。
1).常用依賴庫對比:
Old build artifact | AndroidX build artifact |
com.android.support:appcompat-v7:28.0.2 | androidx.appcompat:appcompat:1.0.0 |
com.android.support:design:28.0.2 | com.google.android.material:material:1.0.0 |
com.android.support:support-v4:28.0.2 | androidx.legacy:legacy-support-v4:1.0.0 |
com.android.support:recyclerview-v7:28.0.2 | androidx.recyclerview:recyclerview:1.0.0 |
com.android.support.constraint:constraint-layout:1.1.2 | androidx.constraintlayout:constraintlayout:1.1.2 |
2).常用支援庫類對比:
Support Library class | AndroidX class |
android.support.v4.app.Fragment | androidx.fragment.app.Fragment |
android.support.v4.app.FragmentActivity | androidx.fragment.app.FragmentActivity |
android.support.v7.app.AppCompatActivity | androidx.appcompat.app.AppCompatActivity |
android.support.v7.app.ActionBar | androidx.appcompat.app.ActionBar |
android.support.v7.widget.RecyclerView | androidx.recyclerview.widget.RecyclerView |
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