Added in API level 26

InMemoryDexClassLoader

public final class InMemoryDexClassLoader
extends BaseDexClassLoader

java.lang.Object
   ↳ java.lang.ClassLoader
     ↳ dalvik.system.BaseDexClassLoader
       ↳ dalvik.system.InMemoryDexClassLoader


A ClassLoader implementation that loads classes from a buffer containing a DEX file. This can be used to execute code that has not been written to the local file system.

Summary

Public constructors

InMemoryDexClassLoader(ByteBuffer dexBuffer, ClassLoader parent)

Creates a new in-memory DEX class loader.

InMemoryDexClassLoader(ByteBuffer[] dexBuffers, ClassLoader parent)

Create an in-memory DEX class loader with the given dex buffers.

InMemoryDexClassLoader(ByteBuffer[] dexBuffers, String librarySearchPath, ClassLoader parent)

Create an in-memory DEX class loader with the given dex buffers.

Inherited methods

Class<?> findClass(String name)

Finds the class with the specified binary name.

String findLibrary(String name)

Returns the absolute path name of a native library.

URL findResource(String name)

Finds the resource with the given name.

Enumeration<URL> findResources(String name)

Returns an enumeration of URL objects representing all the resources with the given name.

Package getPackage(String name)

This method is deprecated. See ClassLoader.getPackage(String)

String toString()

Returns a string representation of the object.

void clearAssertionStatus()

Sets the default assertion status for this class loader to false and discards any package defaults or class assertion status settings associated with the class loader.

final Class<?> defineClass(String name, byte[] b, int off, int len, ProtectionDomain protectionDomain)

Converts an array of bytes into an instance of class Class, with a given ProtectionDomain.

final Class<?> defineClass(String name, ByteBuffer b, ProtectionDomain protectionDomain)

Converts a ByteBuffer into an instance of class Class, with the given ProtectionDomain.

final Class<?> defineClass(byte[] b, int off, int len)

This method was deprecated in API level 15. Replaced by defineClass(String, byte[], int, int)

final Class<?> defineClass(String name, byte[] b, int off, int len)

Converts an array of bytes into an instance of class Class.

Package definePackage(String name, String specTitle, String specVersion, String specVendor, String implTitle, String implVersion, String implVendor, URL sealBase)

Defines a package by name in this ClassLoader.

Class<?> findClass(String name)

Finds the class with the specified binary name.

String findLibrary(String libname)

Returns the absolute path name of a native library.

final Class<?> findLoadedClass(String name)

Returns the class with the given binary name if this loader has been recorded by the Java virtual machine as an initiating loader of a class with that binary name.

URL findResource(String name)

Finds the resource with the given name.

Enumeration<URL> findResources(String name)

Returns an enumeration of URL objects representing all the resources with the given name.

final Class<?> findSystemClass(String name)

Finds a class with the specified binary name, loading it if necessary.

Package getPackage(String name)

This method was deprecated in API level 35. If multiple class loaders delegate to each other and define classes with the same package name, and one such loader relies on the lookup behavior of getPackage to return a Package from a parent loader, then the properties exposed by the Package may not be as expected in the rest of the program. For example, the Package will only expose annotations from the package-info.class file defined by the parent loader, even if annotations exist in a package-info.class file defined by a child loader.

Package[] getPackages()

Returns all of the Packages that have been defined by this class loader and its ancestors.

final ClassLoader getParent()

Returns the parent class loader for delegation.

URL getResource(String name)

Finds the resource with the given name.

InputStream getResourceAsStream(String name)

Returns an input stream for reading the specified resource.

Enumeration<URL> getResources(String name)

Finds all the resources with the given name.

static ClassLoader getSystemClassLoader()

Returns the system class loader.

static URL getSystemResource(String name)

Find a resource of the specified name from the search path used to load classes.

static InputStream getSystemResourceAsStream(String name)

Open for reading, a resource of the specified name from the search path used to load classes.

static Enumeration<URL> getSystemResources(String name)

Finds all resources of the specified name from the search path used to load classes.

Class<?> loadClass(String name, boolean resolve)

Loads the class with the specified binary name.

Class<?> loadClass(String name)

Loads the class with the specified binary name.

static boolean registerAsParallelCapable()

Registers the caller as #isRegisteredAsParallelCapable() parallel capable.

final void resolveClass(Class<?> c)

Links the specified class.

void setClassAssertionStatus(String className, boolean enabled)

Sets the desired assertion status for the named top-level class in this class loader and any nested classes contained therein.

void setDefaultAssertionStatus(boolean enabled)

Sets the default assertion status for this class loader.

void setPackageAssertionStatus(String packageName, boolean enabled)

Sets the package default assertion status for the named package.

final void setSigners(Class<?> c, Object[] signers)

Sets the signers of a class.

Object clone()

Creates and returns a copy of this object.

boolean equals(Object obj)

Indicates whether some other object is "equal to" this one.

void finalize()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

final Class<?> getClass()

Returns the runtime class of this Object.

int hashCode()

Returns a hash code value for the object.

final void notify()

Wakes up a single thread that is waiting on this object's monitor.

final void notifyAll()

Wakes up all threads that are waiting on this object's monitor.

String toString()

Returns a string representation of the object.

final void wait(long timeoutMillis, int nanos)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait(long timeoutMillis)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait()

Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

InMemoryDexClassLoader

Added in API level 26
public InMemoryDexClassLoader (ByteBuffer dexBuffer, 
                ClassLoader parent)

Creates a new in-memory DEX class loader.

Parameters
dexBuffer ByteBuffer: buffer containing DEX file contents between buffer.position() and buffer.limit(). This value cannot be null.

parent ClassLoader: the parent class loader for delegation. This value may be null.

InMemoryDexClassLoader

Added in API level 27
public InMemoryDexClassLoader (ByteBuffer[] dexBuffers, 
                ClassLoader parent)

Create an in-memory DEX class loader with the given dex buffers.

Parameters
dexBuffers ByteBuffer: array of buffers containing DEX files between buffer.position() and buffer.limit(). This value cannot be null.

parent ClassLoader: the parent class loader for delegation. This value may be null.

InMemoryDexClassLoader

Added in API level 29
public InMemoryDexClassLoader (ByteBuffer[] dexBuffers, 
                String librarySearchPath, 
                ClassLoader parent)

Create an in-memory DEX class loader with the given dex buffers.

Parameters
dexBuffers ByteBuffer: array of buffers containing DEX files between buffer.position() and buffer.limit(). This value cannot be null.

librarySearchPath String: the list of directories containing native libraries, delimited by File.pathSeparator; may be null

parent ClassLoader: the parent class loader for delegation. This value may be null.