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.Detector.JavaPsiScanner

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

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.JavaPsiScanner, com.android.tools.lint.detector.api.Detector.JavaScanner, com.android.tools.lint.detector.api.Detector.OtherFileScanner, com.android.tools.lint.detector.api.Detector.ResourceFolderScanner, 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.intellij.psi.JavaElementVisitor	createPsiVisitor(com.android.tools.lint.detector.api.JavaContext context)
java.util.List<java.lang.Class<? extends com.intellij.psi.PsiElement>>	getApplicablePsiTypes()
static java.lang.String	getReplacedType(java.lang.String message, com.android.tools.lint.detector.api.TextFormat format) For an error message for an USE_VALUE_OF issue reported by this detector, returns the type being replaced.

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

afterCheckFile, afterCheckLibraryProject, afterCheckProject, applicableSuperClasses, appliesTo, appliesTo, appliesToFolder, appliesToResourceRefs, beforeCheckFile, beforeCheckLibraryProject, beforeCheckProject, checkBinaryResource, checkCall, checkClass, checkClass, checkClass, checkFolder, checkInstruction, createJavaVisitor, getApplicableAsmNodeTypes, getApplicableAttributes, getApplicableCallNames, getApplicableCallOwners, getApplicableConstructorTypes, getApplicableElements, getApplicableFiles, getApplicableMethodNames, getApplicableNodeTypes, getApplicableReferenceNames, getSpeed, getSpeed, run, visitAttribute, visitBuildScript, visitConstructor, visitConstructor, visitDocument, visitElement, visitElementAfter, visitMethod, visitMethod, 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.Detector.JavaPsiScanner

applicableSuperClasses, appliesToResourceRefs, checkClass, getApplicableConstructorTypes, getApplicableMethodNames, getApplicableReferenceNames, visitConstructor, visitMethod, visitReference, visitResourceReference

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

getApplicablePsiTypes

public java.util.List<java.lang.Class<? extends com.intellij.psi.PsiElement>> getApplicablePsiTypes()

Specified by:

getApplicablePsiTypes in interface com.android.tools.lint.detector.api.Detector.JavaPsiScanner

Overrides:

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

createPsiVisitor

public com.intellij.psi.JavaElementVisitor createPsiVisitor(@NonNull
                                                            com.android.tools.lint.detector.api.JavaContext context)

Specified by:

createPsiVisitor in interface com.android.tools.lint.detector.api.Detector.JavaPsiScanner

Overrides:

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

getReplacedType

@Nullable
public static java.lang.String getReplacedType(@NonNull
                                                         java.lang.String message,
                                                         @NonNull
                                                         com.android.tools.lint.detector.api.TextFormat format)

For an error message for an USE_VALUE_OF issue reported by this detector, returns the type being replaced. Intended to use for IDE quickfix implementations.