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.Detector.ClassScanner

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

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.ClassScanner, com.android.tools.lint.detector.api.Detector.JavaScanner, com.android.tools.lint.detector.api.Detector.OtherFileScanner, com.android.tools.lint.detector.api.Detector.XmlScanner

Field Summary

static com.android.tools.lint.detector.api.Issue

ISSUE Are fragment subclasses instantiatable?

Constructor Summary

FragmentDetector()
Constructs a new FragmentDetector

Method Summary

void	checkClass(com.android.tools.lint.detector.api.ClassContext context, org.objectweb.asm.tree.ClassNode classNode)
com.android.tools.lint.detector.api.Speed	getSpeed()

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

afterCheckFile, afterCheckLibraryProject, afterCheckProject, appliesTo, appliesToFolder, appliesToResourceRefs, beforeCheckFile, beforeCheckLibraryProject, beforeCheckProject, checkCall, checkInstruction, createJavaVisitor, getApplicableAsmNodeTypes, getApplicableAttributes, getApplicableCallNames, getApplicableCallOwners, getApplicableElements, getApplicableFiles, getApplicableMethodNames, getApplicableNodeTypes, run, visitAttribute, visitDocument, visitElement, visitElementAfter, visitMethod, 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.Detector.ClassScanner

checkCall, checkInstruction, getApplicableAsmNodeTypes, getApplicableCallNames, getApplicableCallOwners

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

getSpeed

@NonNull
public com.android.tools.lint.detector.api.Speed getSpeed()

Overrides:

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

checkClass

public void checkClass(@NonNull
                       com.android.tools.lint.detector.api.ClassContext context,
                       @NonNull
                       org.objectweb.asm.tree.ClassNode classNode)

Specified by:

checkClass in interface com.android.tools.lint.detector.api.Detector.ClassScanner

Overrides:

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