Support target Android U

app/build.gradle

@@ -1,11 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 33
     defaultConfig {
         applicationId "me.weishu.freereflection.app"
         minSdkVersion 21
-        targetSdkVersion 30
+        targetSdkVersion 'UpsideDownCake'
         versionCode 1
         versionName "1.0"
 
@@ -25,6 +25,6 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation project(":library")
-    implementation 'com.android.support:appcompat-v7:28.0.0'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
 }

app/src/main/AndroidManifest.xml

@@ -9,7 +9,9 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

gradle.properties

@@ -15,3 +15,5 @@ org.gradle.jvmargs=-Xmx1536m
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
+#android.enableJetifier=true
+android.useAndroidX=true

library/build.gradle

@@ -8,16 +8,20 @@ android {
         versionCode 1
         versionName "1.0"
 
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
 
         externalNativeBuild {
             cmake {
                 cppFlags "-std=c++11"
                 arguments '-DANDROID_STL=c++_static'
             }
         }
+        // provider proguard-rules
+        consumerProguardFile 'proguard-rules.pro'
     }
 
+    packageBuildConfig = false
+
     buildTypes {
         release {
             minifyEnabled false

library/proguard-rules.pro

@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keep class me.weishu.reflection.BootstrapClass { *; }

library/src/main/java/me/weishu/reflection/Reflection.java

@@ -55,6 +55,15 @@ private static boolean unsealByDexFile(Context context) {
                 fos.write(bytes);
             }
 
+            // Support target Android U.
+            // https://developer.android.com/about/versions/14/behavior-changes-14#safer-dynamic-code-loading
+            try {
+                //noinspection ResultOfMethodCallIgnored
+                code.setReadOnly();
+            } catch (Throwable ignore) {
+            }
+
+            @SuppressWarnings("deprecation")
             DexFile dexFile = new DexFile(code);
             // This class is hardcoded in the dex, Don't use BootstrapClass.class to reference it
             // it maybe obfuscated!!