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.JavaScanner

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

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.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

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

JavaPerformanceDetector()
Constructs a new JavaPerformanceDetector check

Method Summary

boolean	appliesTo(com.android.tools.lint.detector.api.Context context, java.io.File file)
lombok.ast.AstVisitor	createJavaVisitor(com.android.tools.lint.detector.api.JavaContext context)
java.util.List<java.lang.Class<? extends lombok.ast.Node>>	getApplicableNodeTypes()
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.
com.android.tools.lint.detector.api.Speed	getSpeed()

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

afterCheckFile, afterCheckLibraryProject, afterCheckProject, applicableSuperClasses, appliesTo, appliesToFolder, appliesToResourceRefs, beforeCheckFile, beforeCheckLibraryProject, beforeCheckProject, checkBinaryResource, checkCall, checkClass, checkClass, checkFolder, checkInstruction, getApplicableAsmNodeTypes, getApplicableAttributes, getApplicableCallNames, getApplicableCallOwners, getApplicableElements, getApplicableFiles, getApplicableMethodNames, getSpeed, run, visitAttribute, visitBuildScript, 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.JavaScanner

applicableSuperClasses, appliesToResourceRefs, checkClass, getApplicableMethodNames, visitMethod, 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

Constructor Detail

JavaPerformanceDetector

public JavaPerformanceDetector()

Constructs a new JavaPerformanceDetector check

Method Detail

appliesTo

public boolean appliesTo(@NonNull
                         com.android.tools.lint.detector.api.Context context,
                         @NonNull
                         java.io.File file)

Overrides:

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

getSpeed

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

Overrides:

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

getApplicableNodeTypes

public java.util.List<java.lang.Class<? extends lombok.ast.Node>> getApplicableNodeTypes()

Specified by:

getApplicableNodeTypes in interface com.android.tools.lint.detector.api.Detector.JavaScanner

Overrides:

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

createJavaVisitor

public lombok.ast.AstVisitor createJavaVisitor(@NonNull
                                               com.android.tools.lint.detector.api.JavaContext context)

Specified by:

createJavaVisitor in interface com.android.tools.lint.detector.api.Detector.JavaScanner

Overrides:

createJavaVisitor 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.