import org.jf.dexlib2.dexbacked.util.AnnotationsDirectory; //导入依赖的package包/类
public DexBackedField(@Nonnull DexReader reader,
                      @Nonnull DexBackedClassDef classDef,
                      int previousFieldIndex,
                      @Nonnull StaticInitialValueIterator staticInitialValueIterator,
                      @Nonnull AnnotationsDirectory.AnnotationIterator annotationIterator) {
    this.dexFile = reader.dexBuf;
    this.classDef = classDef;

    // large values may be used for the index delta, which cause the cumulative index to overflow upon
    // addition, effectively allowing out of order entries.
    int fieldIndexDiff = reader.readLargeUleb128();
    this.fieldIndex = fieldIndexDiff + previousFieldIndex;
    this.accessFlags = reader.readSmallUleb128();

    this.annotationSetOffset = annotationIterator.seekTo(fieldIndex);
    this.initialValue = staticInitialValueIterator.getNextOrNull();
}
 

import org.jf.dexlib2.dexbacked.util.AnnotationsDirectory; //导入依赖的package包/类
public DexBackedMethod(@Nonnull DexReader reader,
                       @Nonnull DexBackedClassDef classDef,
                       int previousMethodIndex,
                       @Nonnull AnnotationsDirectory.AnnotationIterator methodAnnotationIterator,
                       @Nonnull AnnotationsDirectory.AnnotationIterator paramaterAnnotationIterator) {
    this.dexFile = reader.dexBuf;
    this.classDef = classDef;

    // large values may be used for the index delta, which cause the cumulative index to overflow upon
    // addition, effectively allowing out of order entries.
    int methodIndexDiff = reader.readLargeUleb128();
    this.methodIndex = methodIndexDiff + previousMethodIndex;
    this.accessFlags = reader.readSmallUleb128();
    this.codeOffset = reader.readSmallUleb128();

    this.methodAnnotationSetOffset = methodAnnotationIterator.seekTo(methodIndex);
    this.parameterAnnotationSetListOffset = paramaterAnnotationIterator.seekTo(methodIndex);
}
 

import org.jf.dexlib2.dexbacked.util.AnnotationsDirectory; //导入依赖的package包/类
public DexBackedMethod(@Nonnull DexReader reader,
                       @Nonnull DexBackedClassDef classDef,
                       int previousMethodIndex,
                       @Nonnull AnnotationsDirectory.AnnotationIterator methodAnnotationIterator,
                       @Nonnull AnnotationsDirectory.AnnotationIterator paramaterAnnotationIterator) {
    this.dexFile = reader.dexBuf;
    this.classDef = classDef;

    // large values may be used for the index delta, which cause the cumulative index to overflow upon
    // addition, effectively allowing out of order entries.
    int methodIndexDiff = reader.readLargeUleb128();
    this.methodIndex = methodIndexDiff + previousMethodIndex;
    this.accessFlags = reader.readSmallUleb128();
    
    //undo this data is error, the code 
    this.codeOffset = reader.readSmallUleb128();
    //end
    this.methodAnnotationSetOffset = methodAnnotationIterator.seekTo(methodIndex);
    this.parameterAnnotationSetListOffset = paramaterAnnotationIterator.seekTo(methodIndex);
}
 

import org.jf.dexlib2.dexbacked.util.AnnotationsDirectory; //导入依赖的package包/类
public DexBackedField( DexReader reader,
                       DexBackedClassDef classDef,
                      int previousFieldIndex,
                       StaticInitialValueIterator staticInitialValueIterator,
                       AnnotationsDirectory.AnnotationIterator annotationIterator) {
    this.dexFile = reader.dexBuf;
    this.classDef = classDef;

    // large values may be used for the index delta, which cause the cumulative index to overflow upon
    // addition, effectively allowing out of order entries.
    int fieldIndexDiff = reader.readLargeUleb128();
    this.fieldIndex = fieldIndexDiff + previousFieldIndex;
    this.accessFlags = reader.readSmallUleb128();

    this.annotationSetOffset = annotationIterator.seekTo(fieldIndex);
    this.initialValue = staticInitialValueIterator.getNextOrNull();
}
 

import org.jf.dexlib2.dexbacked.util.AnnotationsDirectory; //导入依赖的package包/类
public DexBackedMethod( DexReader reader,
                        DexBackedClassDef classDef,
                       int previousMethodIndex,
                        AnnotationsDirectory.AnnotationIterator methodAnnotationIterator,
                        AnnotationsDirectory.AnnotationIterator paramaterAnnotationIterator) {
    this.dexFile = reader.dexBuf;
    this.classDef = classDef;

    // large values may be used for the index delta, which cause the cumulative index to overflow upon
    // addition, effectively allowing out of order entries.
    int methodIndexDiff = reader.readLargeUleb128();
    this.methodIndex = methodIndexDiff + previousMethodIndex;
    this.accessFlags = reader.readSmallUleb128();
    this.codeOffset = reader.readSmallUleb128();

    this.methodAnnotationSetOffset = methodAnnotationIterator.seekTo(methodIndex);
    this.parameterAnnotationSetListOffset = paramaterAnnotationIterator.seekTo(methodIndex);
}
 

import org.jf.dexlib2.dexbacked.util.AnnotationsDirectory; //导入依赖的package包/类
private AnnotationsDirectory getAnnotationsDirectory() {
    if (annotationsDirectory == null) {
        int annotationsDirectoryOffset = dexFile.readSmallUint(classDefOffset + ClassDefItem.ANNOTATIONS_OFFSET);
        annotationsDirectory = AnnotationsDirectory.newOrEmpty(dexFile, annotationsDirectoryOffset);
    }
    return annotationsDirectory;
}