com.android.tools.lint.checks

Class FragmentDetector

java.lang.Object

com.android.tools.lint.detector.api.Detector

com.android.tools.lint.checks.FragmentDetector

All Implemented Interfaces:

com.android.tools.lint.detector.api.FileScanner, com.android.tools.lint.detector.api.SourceCodeScanner

public class FragmentDetector
extends com.android.tools.lint.detector.api.Detector
implements com.android.tools.lint.detector.api.SourceCodeScanner

Checks that Fragment subclasses can be instantiated via {link Class.newInstance()}: the class is public, static, and has a public null constructor.

This helps track down issues like http://stackoverflow.com/questions/8058809/fragment-activity-crashes-on-screen-rotate (and countless duplicates)

Nested Class Summary

Nested classes/interfaces inherited from class com.android.tools.lint.detector.api.Detector

com.android.tools.lint.detector.api.Detector.BinaryResourceScanner, com.android.tools.lint.detector.api.Detector.ClassScanner, com.android.tools.lint.detector.api.Detector.GradleScanner, com.android.tools.lint.detector.api.Detector.OtherFileScanner, com.android.tools.lint.detector.api.Detector.ResourceFolderScanner, com.android.tools.lint.detector.api.Detector.UastScanner, com.android.tools.lint.detector.api.Detector.XmlScanner

Field Summary

Fields

Modifier and Type	Field and Description
static com.android.tools.lint.detector.api.Issue	ISSUE Are fragment subclasses instantiatable?

Constructor Summary

Constructors

Constructor and Description
FragmentDetector() Constructs a new FragmentDetector

Method Summary

Modifier and Type	Method and Description
java.util.List<java.lang.String>	applicableSuperClasses()
void	visitClass(com.android.tools.lint.detector.api.JavaContext context, org.jetbrains.uast.UClass node)

Methods inherited from class com.android.tools.lint.detector.api.Detector

afterCheckFile, afterCheckLibraryProject, afterCheckProject, analyzeCallGraph, applicableAnnotations, appliesTo, appliesTo, appliesToResourceRefs, beforeCheckFile, beforeCheckLibraryProject, beforeCheckProject, checkBinaryResource, checkCall, checkClass, checkClass, checkFolder, checkInstruction, createPsiVisitor, createUastHandler, fix, getApplicableAsmNodeTypes, getApplicableAttributes, getApplicableCallNames, getApplicableCallOwners, getApplicableConstructorTypes, getApplicableElements, getApplicableFiles, getApplicableMethodNames, getApplicablePsiTypes, getApplicableReferenceNames, getApplicableUastTypes, getSpeed, isApplicableAnnotationUsage, isCallGraphRequired, run, visitAnnotationUsage, visitAttribute, visitBuildScript, visitClass, visitConstructor, visitConstructor, visitDocument, visitElement, visitElementAfter, visitMethod, visitMethod, visitReference, visitReference, visitResourceReference, visitResourceReference

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.android.tools.lint.detector.api.SourceCodeScanner

analyzeCallGraph, applicableAnnotations, appliesToResourceRefs, createUastHandler, getApplicableConstructorTypes, getApplicableMethodNames, getApplicableReferenceNames, getApplicableUastTypes, isApplicableAnnotationUsage, isCallGraphRequired, visitAnnotationUsage, visitClass, visitConstructor, visitMethod, visitReference, visitResourceReference

Methods inherited from interface com.android.tools.lint.detector.api.FileScanner

afterCheckFile, beforeCheckFile

Field Detail

ISSUE

public static final com.android.tools.lint.detector.api.Issue ISSUE

Are fragment subclasses instantiatable?

Constructor Detail

FragmentDetector

public FragmentDetector()

Constructs a new FragmentDetector

Method Detail

applicableSuperClasses

@Nullable
public java.util.List<java.lang.String> applicableSuperClasses()

Specified by:

applicableSuperClasses in interface com.android.tools.lint.detector.api.SourceCodeScanner

Overrides:

applicableSuperClasses in class com.android.tools.lint.detector.api.Detector

visitClass

public void visitClass(@NonNull
                       com.android.tools.lint.detector.api.JavaContext context,
                       @NonNull
                       org.jetbrains.uast.UClass node)

Specified by:

visitClass in interface com.android.tools.lint.detector.api.SourceCodeScanner

Overrides:

visitClass in class com.android.tools.lint.detector.api.Detector