构建DEX文件报错：Smali代码中无符号短整型值超出范围

在APK构建过程中遇到DEX文件相关问题，该问题直接关联Smali代码。涉及的values()方法编译时触发数值越界错误，已排查语法问题、单独编译文件/方法仍无法解决。

涉事Smali方法代码 #

.method public static values()[Landroidx/annotation/RequiresOptIn$Level;
    .locals 1

    sget-object v0, Landroidx/annotation/RequiresOptIn$Level;->$VALUES:[Landroidx/annotation/RequiresOptIn$Level;

    invoke-virtual {v0}, [Ljava/lang/Object;->clone()Ljava/lang/Object;

    move-result-object v0

    check-cast v0, [Landroidx/annotation/RequiresOptIn$Level;

    return-object v0
.end method

报错信息 #

Exception in thread "main" com.android.tools.smali.util.ExceptionWithContext: Exception occurred while writing code_item for method Landroidx/annotation/RequiresOptIn$Level;->values()[Landroidx/annotation/RequiresOptIn$Level;
    at com.android.tools.smali.dexlib2.writer.DexWriter.writeDebugAndCodeItems(DexWriter.java:1119)
    at com.android.tools.smali.dexlib2.writer.DexWriter.writeTo(DexWriter.java:415)
    at com.android.tools.smali.dexlib2.writer.DexWriter.writeTo(DexWriter.java:370)
    at brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:56)
    at brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:35)
    at brut.androlib.ApkBuilder.buildSourcesSmali(ApkBuilder.java:211)
    at brut.androlib.ApkBuilder.buildNonDefaultSources(ApkBuilder.java:159)
    at brut.androlib.ApkBuilder.build(ApkBuilder.java:100)
    at brut.apktool.Main.cmdBuild(Main.java:296)
    at brut.apktool.Main.main(Main.java:95)
Caused by: com.android.tools.smali.util.ExceptionWithContext: Error while writing instruction at code offset 0x2
    at com.android.tools.smali.dexlib2.writer.DexWriter.writeCodeItem(DexWriter.java:1392)
    at com.android.tools.smali.dexlib2.writer.DexWriter.writeDebugAndCodeItems(DexWriter.java:1115)
    ... 9 more
Caused by: com.android.tools.smali.util.ExceptionWithContext: Unsigned short value out of range: 66291
    at com.android.tools.smali.dexlib2.writer.DexDataWriter.writeUshort(DexWriter.java:115)
    at com.android.tools.smali.dexlib2.writer.InstructionWriter.write(InstructionWriter.java:397)
    at com.android.tools.smali.dexlib2.writer.DexWriter.writeCodeItem(DexWriter.java:1352)
    ... 10 more

已做排查尝试 #

• 确认该Smali方法无语法错误或逻辑问题
• 尝试单独编译该Smali文件及目标方法，问题依旧

可能的解决方向 #

1. 处理常量池索引溢出
   报错中的Unsigned short value out of range: 66291说明DEX文件中某个需要用无符号短整型（最大65535）存储的索引值超限，大概率是字符串/类型/方法常量池的索引溢出。

   • 若采用多DEX构建，将该类的Smali代码拆分到其他DEX文件中
   • 清理项目中无用的常量、类或方法，缩减常量池大小

2. 修正Smali指令引用
   修改invoke-virtual指令，直接使用数组类型的clone()方法而非Object类的，避免额外的常量引用：

   invoke-virtual {v0}, [Landroidx/annotation/RequiresOptIn$Level;->clone()Ljava/lang/Object;
   

3. 更新Apktool版本
   旧版Apktool在处理高版本Android SDK注解类时可能存在常量池处理bug，尝试更新至最新稳定版本后重新编译。

4. 检查注解类完整性
   确认RequiresOptIn$Level枚举类的所有Smali文件完整，静态数组$VALUES的定义无缺失或错误。

内容的提问来源于stack exchange，提问作者Duxii