![]() This may sound like a lot, but for larger apps with complex code, it can be a significant limitation. However, one of these values is reserved for internal use, leaving a maximum of 65,536 methods that can be included in a single dex file. This field is stored as a 16-bit unsigned integer, which means that the maximum value it can hold is 65,535. Each dex file has a header that contains a field called the "method count", which specifies the number of methods contained in the file. The limitation of 65,536 methods in a single dex file arises from the way that dex files are formatted. When an app is compiled, its code is converted into a dex file, which is then loaded into memory when the app is launched. A dex file, short for Dalvik executable, is a file format used by Android to store compiled code written in Java or Kotlin. In order to understand the limitation of 65,536 methods in a single dex file, it's important to first understand what a dex file is. Understanding the Limitation of 65,536 Methods By the end of this subtopic, readers will have a deeper understanding of how to improve app performance by optimizing their dex files. We will provide code examples and explain how these techniques work, as well as their benefits and potential drawbacks. ![]() This subtopic will focus on how developers can resolve this limitation and unlock higher app performance by using techniques such as code shrinking, multiscreen configuration files, and dynamic feature modules. However, dex files have a limitation of 65,536 method references per dex file, which can cause issues for larger and more complex apps. When building an Android app, developers typically write their code in Java or Kotlin, which are then compiled into Dalvik bytecode and packaged in a single Dalvik Executable (dex) file.
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