记录一次androidx项目迁移

深藏阁楼爱情的钟 2022-11-09 01:29 282阅读 0赞

## 1.Android Studio提供了一个一键迁移的功能 ##

只需要对着你的项目名右击 → Refactor → Migrate to AndroidX，就会弹出如下图所示的窗口。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1c2VqaWVnZTY_size_16_color_FFFFFF_t_70]

这里点击Migrate，Android Studio就会自动检查你项目中所有使用Android Support Library的地方，并将它们全部改成AndroidX中对应的库。另外Android Studio还会将你原来的项目备份成一个zip文件，这样即使迁移之后的代码出现了问题你还可以随时还原回之前的代码。

> 几乎没动代码就直接转成androidx了，android studio工具太强，只需要小改动下代码就好了。

## 2.项目里面变化： ##

### 2.1项目的gradle.properties文件 ###

-android.enableR8 = false
    +android.enableR8 = false
    +android.useAndroidX=true
    +android.enableJetifier=true

### 2.2 app/build.gradle文件 ###

android { 
        defaultConfig { 
        - testInstrumentationRunner “android.support.test.runner.AndroidJUnitRunner”   其他库工程几乎都有
        + testInstrumentationRunner ‘androidx.test.runner.AndroidJUnitRunner'
        }
    }
    dependencies { 
    -    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    +    implementation 'androidx.constraintlayout:constraintlayout:1.1.3’
    
    -    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    -    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    +    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    +    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0’
    
    -    implementation 'com.android.support:multidex:1.0.3'
    +    implementation 'androidx.multidex:multidex:2.0.0'
    
    +    implementation 'com.jakewharton:butterknife:10.2.3'
    +    annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.3'
    -    implementation 'com.jakewharton:butterknife:8.8.1'
    -    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    
    -    implementation 'com.github.bumptech.glide:glide:4.7.1'
    -    annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'
    +    implementation 'com.github.bumptech.glide:glide:4.11.0'
    +    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
    
    -    implementation 'com.android.support:cardview-v7:27.1.1'
    +    implementation 'androidx.cardview:cardview:1.0.0'
    }

注：**里面2个第三方库的升级**  
**butterknife库的升级**

+    implementation 'com.jakewharton:butterknife:10.2.3'
    +    annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.3'
    
    -    implementation 'com.jakewharton:butterknife:8.8.1'
    -    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1c2VqaWVnZTY_size_16_color_FFFFFF_t_70 1]

**glide库的升级**

-    implementation 'com.github.bumptech.glide:glide:4.7.1'
    -    annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'
    +    implementation 'com.github.bumptech.glide:glide:4.11.0'
    +    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1c2VqaWVnZTY_size_16_color_FFFFFF_t_70 2]

### 2.3 项目的builde.gradle ###

buildscript { 
        dependencies { 
        -  classpath 'com.jakewharton:butterknife-gradle-plugin:9.0.0-rc2'
        + classpath 'com.jakewharton:butterknife-gradle-plugin:10.2.3'
        }
    }

### 2.4 库工程 build.gradle ###

-    implementation 'com.android.support:appcompat-v7:27.1.1'
    +    implementation 'androidx.appcompat:appcompat:1.0.0'
    -    androidTestImplementation 'com.android.support.test:runner:1.0.2’
    +    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    -    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    +    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0’
    
    -    api 'com.android.support:support-fragment:27.1.1'
    -    api "com.android.support:support-core-utils:27.1.1"
    +    api 'androidx.fragment:fragment:1.0.0'
    +    api 'androidx.legacy:legacy-support-core-utils:1.0.0’
    
    -    implementation 'com.android.support:cardview-v7:27.1.1'
    -    implementation 'com.android.support:appcompat-v7:27.1.1'
    -    implementation 'com.android.support:design:27.1.1'
    +    implementation 'androidx.cardview:cardview:1.0.0'
    +    implementation 'androidx.appcompat:appcompat:1.0.0'
    +    implementation 'com.google.android.material:material:1.0.0'
    -    api 'com.jakewharton:butterknife:8.8.1'
    -    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    +    api 'com.jakewharton:butterknife:10.2.3'
    +    annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.3'
    -    annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'
    +    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
    
    -    implementation 'com.android.support:recyclerview-v7:27.1.1'
    +    implementation 'androidx.recyclerview:recyclerview:1.0.0'
    
    -    implementation 'com.android.support:design:27.1.1'
    +    implementation 'com.google.android.material:material:1.0.0'
    -    implementation 'com.android.support:recyclerview-v7:27.1.1'
    +    implementation 'androidx.recyclerview:recyclerview:1.0.0'
    
    -    api 'com.android.support:support-v4:27.1.1'
    +    api 'androidx.legacy:legacy-support-v4:1.0.0'

### 2.5 app/AndroidManifest.xml ###

-    android:name="android.support.v4.content.FileProvider"
    +    android:name="androidx.core.content.FileProvider"

### 2.6 java类 ###

-import android.support.annotation.CallSuper;
    +import androidx.annotation.CallSuper;
    -import android.support.v4.view.MotionEventCompat;
    +import androidx.core.view.MotionEventCompat;
    
    -import android.support.v7.widget.DefaultItemAnimator;
    +import androidx.recyclerview.widget.DefaultItemAnimator;
    -import android.support.v4.util.LongSparseArray;
    +import androidx.collection.LongSparseArray;
    
    -import android.support.v4.util.SparseArrayCompat;
    +import androidx.collection.SparseArrayCompat;
    -import android.support.v7.widget.StaggeredGridLayoutManager;
    +import androidx.recyclerview.widget.StaggeredGridLayoutManager;
    
    -import android.support.v4.view.GestureDetectorCompat;
    -import android.support.v4.widget.ScrollerCompat;
    +import androidx.core.view.GestureDetectorCompat;
    +import androidx.core.widget.ScrollerCompat;
    
    -import android.support.test.InstrumentationRegistry;
    -import android.support.test.runner.AndroidJUnit4;
    +import androidx.test.platform.app.InstrumentationRegistry;
    +import androidx.test.ext.junit.runners.AndroidJUnit4;
    
    -import android.support.v4.view.ViewPager;
    +import androidx.viewpager.widget.ViewPager;
    -import android.support.v4.widget.NestedScrollView;
    +import androidx.core.widget.NestedScrollView;
    -import android.support.v4.view.PagerAdapter;
    +import androidx.viewpager.widget.PagerAdapter;
    -import android.support.v4.view.NestedScrollingChild2;
    +import androidx.core.view.NestedScrollingChild2;
    -import android.support.v4.view.NestedScrollingChildHelper;
    +import androidx.core.view.NestedScrollingChildHelper;
    -import android.support.v4.view.NestedScrollingParent2;
    +import androidx.core.view.NestedScrollingParent2;
    -import android.support.v4.view.NestedScrollingParentHelper;
    +import androidx.core.view.NestedScrollingParentHelper;
    -import android.support.v7.widget.AppCompatEditText;
    +import androidx.appcompat.widget.AppCompatEditText;
    -import android.support.v7.widget.AppCompatImageView;
    +import androidx.appcompat.widget.AppCompatImageView;
    -import android.support.annotation.ColorInt;
    +import androidx.annotation.ColorInt;
    -import android.support.annotation.DrawableRes;
    +import androidx.annotation.DrawableRes;
    -import android.support.annotation.LayoutRes;
    +import androidx.annotation.LayoutRes;
    -import android.support.v7.widget.CardView;
    +import androidx.cardview.widget.CardView;
    -import android.support.v7.app.AlertDialog;
    +import androidx.appcompat.app.AlertDialog;
    -import android.support.v4.widget.NestedScrollView;
    +import androidx.core.widget.NestedScrollView;
    -import android.support.v4.content.LocalBroadcastManager;
    +import androidx.localbroadcastmanager.content.LocalBroadcastManager;
    -import android.support.v4.app.NotificationCompat;
    +import androidx.core.app.NotificationCompat;
    -import android.support.v4.content.ContextCompat;
    +import androidx.core.content.ContextCompat;
    -import android.support.v4.graphics.drawable.DrawableCompat;
    +import androidx.core.graphics.drawable.DrawableCompat;
    -import android.support.v7.content.res.AppCompatResources;
    +import androidx.appcompat.content.res.AppCompatResources;
    -import android.support.annotation.RequiresApi;
    +import androidx.annotation.RequiresApi;
    -import android.support.v4.widget.SwipeRefreshLayout;
    +import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
    -import android.support.v7.app.AppCompatActivity;
    +import androidx.appcompat.app.AppCompatActivity;
    -import android.support.v4.content.ContextCompat;
    +import androidx.core.content.ContextCompat;
    -import android.support.v4.app.ActivityCompat;
    +import androidx.core.app.ActivityCompat;
    -import android.support.v4.app.ActivityOptionsCompat;
    +import androidx.core.app.ActivityOptionsCompat;
    -import android.support.v4.util.Pair;
    +import androidx.core.util.Pair;
    -import android.support.v4.view.ViewCompat;
    +import androidx.core.view.ViewCompat;
    -import android.support.v4.content.FileProvider;
    +import androidx.core.content.FileProvider;
    -import android.support.annotation.NonNull;
    +import androidx.annotation.NonNull;
    -import android.support.annotation.Nullable;
    +import androidx.annotation.Nullable;
    -import android.support.v7.widget.RecyclerView;
    +import androidx.recyclerview.widget.RecyclerView;
    -import android.support.v7.widget.DividerItemDecoration;
    +import androidx.recyclerview.widget.DividerItemDecoration;
    -import android.support.v7.widget.GridLayoutManager;
    +import androidx.recyclerview.widget.GridLayoutManager;
    -import android.support.v7.widget.LinearLayoutManager;
    +import androidx.recyclerview.widget.LinearLayoutManager;
    -import android.support.v7.widget.StaggeredGridLayoutManager;
    +import androidx.recyclerview.widget.StaggeredGridLayoutManager;
    -import android.support.v7.widget.helper.ItemTouchHelper;
    +import androidx.recyclerview.widget.ItemTouchHelper;
    -import android.support.v4.view.GestureDetectorCompat;
    +import androidx.core.view.GestureDetectorCompat;
    -import android.support.annotation.FloatRange;
    +import androidx.annotation.FloatRange;
    -import android.support.annotation.ColorRes;
    +import androidx.annotation.ColorRes;
    -import android.support.v4.app.Fragment;
    +import androidx.fragment.app.Fragment;
    -import android.support.v4.app.FragmentManager;
    +import androidx.fragment.app.FragmentManager;
    -import android.support.v4.app.FragmentPagerAdapter;
    +import androidx.fragment.app.FragmentPagerAdapter;
    -import android.support.v4.app.FragmentStatePagerAdapter;
    +import androidx.fragment.app.FragmentStatePagerAdapter;
    -import android.support.v4.app.FragmentTransaction;
    +import androidx.fragment.app.FragmentTransaction;
    -import android.support.v4.app.FragmentActivity;
    +import androidx.fragment.app.FragmentActivity;
    -import android.support.design.widget.TabLayout;
    +import com.google.android.material.tabs.TabLayout;
    -import android.support.v4.content.CursorLoader;
    +import androidx.loader.content.CursorLoader;
    -import android.support.v4.app.LoaderManager;
    +import androidx.loader.app.LoaderManager;
    -import android.support.v4.content.Loader;
    +import androidx.loader.content.Loader;
    -import android.support.multidex.MultiDex;
    +import androidx.multidex.MultiDex;

### 2.7 xml布局文件 ###

-<android.support.constraint.ConstraintLayout
    +<androidx.constraintlayout.widget.ConstraintLayout
    -    <android.support.design.widget.CoordinatorLayout
    +    <androidx.coordinatorlayout.widget.CoordinatorLayout
    -        <android.support.design.widget.AppBarLayout
    +        <com.google.android.material.appbar.AppBarLayout
    -    <android.support.v4.widget.NestedScrollView
    +    <androidx.core.widget.NestedScrollView
    -    <android.support.v4.view.ViewPager
    +    <androidx.viewpager.widget.ViewPager
    -    <android.support.v7.widget.CardView
    +    <androidx.cardview.widget.CardView
    -    <android.support.design.widget.TabLayout
    +    <com.google.android.material.tabs.TabLayout

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d1c2VqaWVnZTY_size_16_color_FFFFFF_t_70 2]: /images/20221023/d1ac4ae702db45f2942a82278d3d481a.png