com.android.tools.lint.checks

Class JavaPerformanceDetector

java.lang.Object

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

com.android.tools.lint.checks.JavaPerformanceDetector

All Implemented Interfaces:

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

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

Looks for performance issues in Java files, such as memory allocations during drawing operations and using HashMap instead of SparseArray.

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 java.lang.String	CLASS_CANVAS
static com.android.tools.lint.detector.api.Issue	PAINT_ALLOC Allocating objects during a paint method
static com.android.tools.lint.detector.api.Issue	USE_SPARSE_ARRAY Using HashMaps where SparseArray would be better
static com.android.tools.lint.detector.api.Issue	USE_VALUE_OF Using new Integer() instead of the more efficient Integer.valueOf

Constructor Summary

Constructors

Constructor and Description
JavaPerformanceDetector() Constructs a new JavaPerformanceDetector check

Method Summary

Modifier and Type	Method and Description
com.android.tools.lint.client.api.UElementHandler	createUastHandler(com.android.tools.lint.detector.api.JavaContext context)
java.util.List<java.lang.Class<? extends org.jetbrains.uast.UElement>>	getApplicableUastTypes()

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

afterCheckEachProject, afterCheckFile, afterCheckLibraryProject, afterCheckProject, afterCheckRootProject, analyzeCallGraph, applicableAnnotations, applicableSuperClasses, appliesTo, appliesTo, appliesToResourceRefs, beforeCheckEachProject, beforeCheckFile, beforeCheckLibraryProject, beforeCheckProject, beforeCheckRootProject, checkBinaryResource, checkCall, checkClass, checkClass, checkDslPropertyAssignment, checkFolder, checkInstruction, checkMethodCall, createPsiVisitor, fix, getApplicableAsmNodeTypes, getApplicableAttributes, getApplicableCallNames, getApplicableCallOwners, getApplicableConstructorTypes, getApplicableElements, getApplicableFiles, getApplicableMethodNames, getApplicablePsiTypes, getApplicableReferenceNames, getCustomVisitor, getSpeed, isApplicableAnnotationUsage, isCallGraphRequired, run, visitAnnotationUsage, visitAnnotationUsage, visitAttribute, visitBuildScript, visitClass, visitClass, visitConstructor, visitConstructor, visitDocument, visitElement, visitElementAfter, visitMethod, visitMethod, visitMethodCall, 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, applicableSuperClasses, appliesToResourceRefs, getApplicableConstructorTypes, getApplicableMethodNames, getApplicableReferenceNames, isApplicableAnnotationUsage, isCallGraphRequired, visitAnnotationUsage, visitAnnotationUsage, visitClass, visitClass, visitConstructor, visitMethod, visitMethodCall, visitReference, visitResourceReference

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

afterCheckFile, beforeCheckFile

Field Detail

PAINT_ALLOC

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

Allocating objects during a paint method

USE_SPARSE_ARRAY

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

Using HashMaps where SparseArray would be better

USE_VALUE_OF

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

Using new Integer() instead of the more efficient Integer.valueOf

CLASS_CANVAS

public static final java.lang.String CLASS_CANVAS

See Also:

Constant Field Values

Constructor Detail

JavaPerformanceDetector

public JavaPerformanceDetector()

Constructs a new JavaPerformanceDetector check

Method Detail

getApplicableUastTypes

public java.util.List<java.lang.Class<? extends org.jetbrains.uast.UElement>> getApplicableUastTypes()

Specified by:

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

Overrides:

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

createUastHandler

public com.android.tools.lint.client.api.UElementHandler createUastHandler(@NonNull
                                                                           com.android.tools.lint.detector.api.JavaContext context)

Specified by:

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

Overrides:

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