Dex (platform/libcore dex 7.1.0

java.lang.Object
- com.android.dex.Dex

```
public final class Dex
extends Object
```
The bytes of a dex file in memory for reading and writing. All int offsets are unsigned.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

class Dex.Section

Nested Classes
Modifier and Type	Class and Description
`class`	`Dex.Section`

Constructor Summary

Constructors
Constructor and Description
`Dex(byte[] data)` Creates a new dex that reads from `data`.
`Dex(File file)` Creates a new dex buffer from the dex file `file`.
`Dex(InputStream in)` Creates a new dex buffer of the dex in `in`, and closes `in`.
`Dex(int byteCount)` Creates a new empty dex of the specified size.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`annotationDirectoryOffsetFromClassDefIndex(int classDefIndex)` Look up an annotation directory offset from a class def index.
`Dex.Section`	`appendSection(int maxByteCount, String name)`
`Iterable<ClassDef>`	`classDefs()`
`int`	`computeChecksum()` Returns the checksum of all but the first 12 bytes of `dex`.
`byte[]`	`computeSignature()` Returns the signature of all but the first 32 bytes of this dex.
`static Dex`	`create(ByteBuffer data)` Creates a new dex from the contents of `bytes`.
`int`	`declaringClassIndexFromMethodIndex(int methodIndex)` Look up a method id declaring class index from a method index.
`int`	`descriptorIndexFromTypeIndex(int typeIndex)` Look up a descriptor index from a type index.
`List<FieldId>`	`fieldIds()`
`int`	`findClassDefIndexFromTypeIndex(int typeIndex)`
`int`	`findFieldIndex(FieldId fieldId)`
`int`	`findMethodIndex(MethodId methodId)`
`int`	`findStringIndex(String s)`
`int`	`findTypeIndex(String descriptor)`
`byte[]`	`getBytes()` Returns a copy of the the bytes of this dex.
`int`	`getLength()`
`int`	`getNextSectionStart()`
`TableOfContents`	`getTableOfContents()`
`short[]`	`interfaceTypeIndicesFromClassDefIndex(int classDefIndex)` Look up interface types indices from a return type index from a method index.
`List<MethodId>`	`methodIds()`
`int`	`nameIndexFromFieldIndex(int fieldIndex)` Look up a field id name index from a field index.
`int`	`nameIndexFromMethodIndex(int methodIndex)` Look up a method id name index from a method index.
`Dex.Section`	`open(int position)`
`short[]`	`parameterTypeIndicesFromMethodIndex(int methodIndex)` Look up a parameter type ids from a method index.
`List<ProtoId>`	`protoIds()`
`ClassData`	`readClassData(ClassDef classDef)`
`Code`	`readCode(ClassData.Method method)`
`TypeList`	`readTypeList(int offset)`
`int`	`returnTypeIndexFromMethodIndex(int methodIndex)` Look up a method id return type index from a method index.
`List<String>`	`strings()`
`List<Integer>`	`typeIds()`
`int`	`typeIndexFromClassDefIndex(int classDefIndex)` Look up a type index index from a class def index.
`int`	`typeIndexFromFieldIndex(int fieldIndex)` Look up a field id type index from a field index.
`List<String>`	`typeNames()`
`void`	`writeHashes()` Generates the signature and checksum of the dex file `out` and writes them to the file.
`void`	`writeTo(File dexOut)`
`void`	`writeTo(OutputStream out)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Dex
```
public Dex(byte[] data)
    throws IOException
```
    Creates a new dex that reads from data. It is an error to modify data after using it to create a dex buffer.
    
    Throws:
    
    IOException
  - Dex
```
public Dex(int byteCount)
    throws IOException
```
    Creates a new empty dex of the specified size.
    
    Throws:
    
    IOException
  - Dex
```
public Dex(InputStream in)
    throws IOException
```
    Creates a new dex buffer of the dex in in, and closes in.
    
    Throws:
    
    IOException
  - Dex
```
public Dex(File file)
    throws IOException
```
    Creates a new dex buffer from the dex file file.
    
    Throws:
    
    IOException
- Method Detail
  - create
```
public static Dex create(ByteBuffer data)
                  throws IOException
```
    Creates a new dex from the contents of bytes. This API supports both .dex and .odex input. Calling this constructor transfers ownership of bytes to the returned Dex: it is an error to access the buffer after calling this method.
    
    Throws:
    
    IOException
  - writeTo
```
public void writeTo(OutputStream out)
             throws IOException
```
    Throws:
    
    IOException
  - writeTo
```
public void writeTo(File dexOut)
             throws IOException
```
    Throws:
    
    IOException
  - getTableOfContents
```
public TableOfContents getTableOfContents()
```
  - open
```
public Dex.Section open(int position)
```
  - appendSection
```
public Dex.Section appendSection(int maxByteCount,
                                 String name)
```
  - getLength
```
public int getLength()
```
  - getNextSectionStart
```
public int getNextSectionStart()
```
  - getBytes
```
public byte[] getBytes()
```
    Returns a copy of the the bytes of this dex.
  - strings
```
public List<String> strings()
```
  - typeIds
```
public List<Integer> typeIds()
```
  - typeNames
```
public List<String> typeNames()
```
  - protoIds
```
public List<ProtoId> protoIds()
```
  - fieldIds
```
public List<FieldId> fieldIds()
```
  - methodIds
```
public List<MethodId> methodIds()
```
  - classDefs
```
public Iterable<ClassDef> classDefs()
```
  - readTypeList
```
public TypeList readTypeList(int offset)
```
  - readClassData
```
public ClassData readClassData(ClassDef classDef)
```
  - readCode
```
public Code readCode(ClassData.Method method)
```
  - computeSignature
```
public byte[] computeSignature()
                        throws IOException
```
    Returns the signature of all but the first 32 bytes of this dex. The first 32 bytes of dex files are not specified to be included in the signature.
    
    Throws:
    
    IOException
  - computeChecksum
```
public int computeChecksum()
                    throws IOException
```
    Returns the checksum of all but the first 12 bytes of dex.
    
    Throws:
    
    IOException
  - writeHashes
```
public void writeHashes()
                 throws IOException
```
    Generates the signature and checksum of the dex file out and writes them to the file.
    
    Throws:
    
    IOException
  - nameIndexFromFieldIndex
```
public int nameIndexFromFieldIndex(int fieldIndex)
```
    Look up a field id name index from a field index. Cheaper than: fieldIds().get(fieldDexIndex).getNameIndex();
  - findStringIndex
```
public int findStringIndex(String s)
```
  - findTypeIndex
```
public int findTypeIndex(String descriptor)
```
  - findFieldIndex
```
public int findFieldIndex(FieldId fieldId)
```
  - findMethodIndex
```
public int findMethodIndex(MethodId methodId)
```
  - findClassDefIndexFromTypeIndex
```
public int findClassDefIndexFromTypeIndex(int typeIndex)
```
  - typeIndexFromFieldIndex
```
public int typeIndexFromFieldIndex(int fieldIndex)
```
    Look up a field id type index from a field index. Cheaper than: fieldIds().get(fieldDexIndex).getTypeIndex();
  - declaringClassIndexFromMethodIndex
```
public int declaringClassIndexFromMethodIndex(int methodIndex)
```
    Look up a method id declaring class index from a method index. Cheaper than: methodIds().get(methodIndex).getDeclaringClassIndex();
  - nameIndexFromMethodIndex
```
public int nameIndexFromMethodIndex(int methodIndex)
```
    Look up a method id name index from a method index. Cheaper than: methodIds().get(methodIndex).getNameIndex();
  - parameterTypeIndicesFromMethodIndex
```
public short[] parameterTypeIndicesFromMethodIndex(int methodIndex)
```
    Look up a parameter type ids from a method index. Cheaper than: readTypeList(protoIds.get(methodIds().get(methodDexIndex).getProtoIndex()).getParametersOffset()).getTypes();
  - returnTypeIndexFromMethodIndex
```
public int returnTypeIndexFromMethodIndex(int methodIndex)
```
    Look up a method id return type index from a method index. Cheaper than: protoIds().get(methodIds().get(methodDexIndex).getProtoIndex()).getReturnTypeIndex();
  - descriptorIndexFromTypeIndex
```
public int descriptorIndexFromTypeIndex(int typeIndex)
```
    Look up a descriptor index from a type index. Cheaper than: open(tableOfContents.typeIds.off + (index * SizeOf.TYPE_ID_ITEM)).readInt();
  - typeIndexFromClassDefIndex
```
public int typeIndexFromClassDefIndex(int classDefIndex)
```
    Look up a type index index from a class def index.
  - annotationDirectoryOffsetFromClassDefIndex
```
public int annotationDirectoryOffsetFromClassDefIndex(int classDefIndex)
```
    Look up an annotation directory offset from a class def index.
  - interfaceTypeIndicesFromClassDefIndex
```
public short[] interfaceTypeIndicesFromClassDefIndex(int classDefIndex)
```
    Look up interface types indices from a return type index from a method index. Cheaper than: ...getClassDef(classDefIndex).getInterfaces();

Class Dex

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Dex

Dex

Dex

Dex

Method Detail

create

writeTo

writeTo

getTableOfContents

open

appendSection

getLength

getNextSectionStart

getBytes

strings

typeIds

typeNames

protoIds

fieldIds

methodIds

classDefs

readTypeList

readClassData

readCode

computeSignature

computeChecksum

writeHashes

nameIndexFromFieldIndex

findStringIndex

findTypeIndex

findFieldIndex

findMethodIndex

findClassDefIndexFromTypeIndex

typeIndexFromFieldIndex

declaringClassIndexFromMethodIndex

nameIndexFromMethodIndex

parameterTypeIndicesFromMethodIndex

returnTypeIndexFromMethodIndex

descriptorIndexFromTypeIndex

typeIndexFromClassDefIndex

annotationDirectoryOffsetFromClassDefIndex

interfaceTypeIndicesFromClassDefIndex