Package com.android.tools.lint.checks

Interface Summary

Interface	Description
PermissionHolder	A PermissionHolder knows which permissions are held/granted and can look up individual permissions and respond to queries about whether they are held or not.

Class Summary

Class	Description
AccessibilityDetector	Check which looks for accessibility problems like missing content descriptions
AddJavascriptInterfaceDetector	Ensures that addJavascriptInterface is not called for API levels below 17.
AlarmDetector	Makes sure that alarms are handled correctly
AllCapsDetector	Checks for the combination of textAllCaps=true and using markup in the string being formatted
AllowAllHostnameVerifierDetector
AlwaysShowActionDetector	Check which looks for usage of showAsAction="always" in menus (or MenuItem.SHOW_AS_ACTION_ALWAYS in code), which is usually a style guide violation.
AndroidAutoDetector	Detector for Android Auto issues.
AndroidPatternMatcher	A simple pattern matcher, which is safe to use on untrusted data: it does not provide full reg-exp support, only simple globbing that can not be used maliciously.
AndroidTvDetector	Detects various issues for Android TV.
AnnotationDetector	Checks annotations to make sure they are valid
Api	Main entry point for API description.
ApiClass	Represents a class and its methods/fields.
ApiDetector	Looks for usages of APIs that are not supported in all the versions targeted by this application (according to its minimum API requirement in the manifest).
ApiLookup	Database for API checking: Allows quick lookup of a given class, method or field to see which API level it was introduced in.
ApiPackage	Represents a package and its classes
ApiParser	Parser for the simplified XML API format version 1.
AppCompatCallDetector
AppCompatCustomViewDetector	Looks for subclasses of custom widgets in projects using app compat
AppCompatResourceDetector	Check that the right namespace is used for app compat menu items Using app:showAsAction instead of android:showAsAction leads to problems, but isn't caught by the API Detector since it's not in the Android namespace.
AppIndexingApiDetector	Check if the usage of App Indexing is correct.
AppLinksAutoVerifyDetector	Check if the App Link which needs auto verification is correctly set.
AppLinksValidDetector	Checks for invalid app links URLs
AppLinksValidDetector.UriInfo	URL information from an intent filter
ArraySizeDetector	Checks for arrays with inconsistent item counts
AssertDetector	Looks for assertion usages.
BadHostnameVerifierDetector
BatteryDetector	Checks for issues that negatively affect battery life
BuiltinIssueRegistry	Registry which provides a list of checks to be performed on an Android project
ButtonDetector	Check which looks at the order of buttons in dialogs and makes sure that "the dismissive action of a dialog is always on the left whereas the affirmative actions are on the right."
ByteOrderMarkDetector	Checks that byte order marks do not appear in resource names
CallSuperDetector	Makes sure that methods call super when overriding methods.
ChildCountDetector	Check which makes sure that views have the expected number of declared children (e.g.
ChromeOsDetector	Detects various issues for Chrome OS devices.
CipherGetInstanceDetector	Ensures that Cipher.getInstance is not called with AES as the parameter.
CleanupDetector	Checks for missing recycle calls on resources that encourage it, and for missing commit calls on FragmentTransactions, etc.
ClickableViewAccessibilityDetector	Checks that views that override View#onTouchEvent also implement View#performClick and call performClick when click detection occurs.
CommentDetector	Looks for issues in Java comments
ConstraintLayoutDetector	Check which looks for potential errors in declarations of ConstraintLayout, such as under specifying constraints
ControlFlowGraph	A ControlFlowGraph is a graph containing a node for each instruction in a method, and an edge for each possible control flow; usually just "next" for the instruction following the current instruction, but in the case of a branch such as an "if", multiple edges to each successive location, or with a "goto", a single edge to the jumped-to instruction.
ControlFlowGraph.Node	A ControlFlowGraph.Node is a node in the control flow graph for a method, pointing to the instruction and its possible successors
CordovaVersionDetector	Checks to detect vulnerable versions of Apache Cordova.
CordovaVersionDetector.JsVersionLineProcessor	A LineProcessor that matches a specific cordova pattern and if successful terminates early.
CustomViewDetector	Makes sure that custom views use a declare styleable that matches the name of the custom view
CutPasteDetector	Detector looking for cut & paste issues
DateFormatDetector	Checks for errors related to Date Formats
DeprecationDetector	Check which looks for usage of deprecated tags, attributes, etc.
DetectMissingPrefix	Detects layout attributes on builtin Android widgets that do not specify a prefix but probably should.
DosLineEndingDetector	Checks that the line endings in DOS files are consistent
DuplicateIdDetector	Checks for duplicate ids within a layout and within an included layout
DuplicateResourceDetector	This detector identifies cases where a resource is defined multiple times in the same resource folder
ExifInterfaceDetector	Checks for errors related to the Exif Interface
ExtraTextDetector	Check which looks for invalid resources.
FieldGetterDetector	Looks for getter calls within the same class that could be replaced by direct field references instead.
FirebaseAnalyticsDetector
FirebaseMessagingDetector
FragmentDetector	Checks that Fragment subclasses can be instantiated via {link Class.newInstance()}: the class is public, static, and has a public null constructor.
FullBackupContentDetector	Check which makes sure that a full-backup-content descriptor file is valid and logical
GetSignaturesDetector
GradleDetector	Checks Gradle files for potential errors
GridLayoutDetector	Check which looks for potential errors in declarations of GridLayouts, such as specifying row/column numbers outside the declared dimensions of the grid.
HandlerDetector	Checks that Handler implementations are top level classes or static.
HardcodedDebugModeDetector	Checks for hardcoded debug mode in manifest files
HardcodedValuesDetector	Check which looks at the children of ScrollViews and ensures that they fill/match the parent width instead of setting wrap_content.
HardwareIdDetector	Detect calls to get device Identifiers.
IconDetector	Checks for common icon problems, such as wrong icon sizes, placing icons in the density independent drawable folder, etc.
IncludeDetector	Checks for problems with include tags, such as providing layout parameters without specifying both layout_width and layout_height
InefficientWeightDetector	Checks whether a layout_weight is declared inefficiently.
InstantAppDetector	Checks related to instant apps
InvalidPackageDetector	Looks for usages of Java packages that are not included in Android.
ItemDecoratorDetector	Looks for copy/paste versions of the divider item decorator.
JavaPerformanceDetector	Looks for performance issues in Java files, such as memory allocations during drawing operations and using HashMap instead of SparseArray.
JavaScriptInterfaceDetector	Looks for addJavascriptInterface calls on interfaces have been properly annotated with @JavaScriptInterface
JobSchedulerDetector	Checks looking for issues related to the JobScheduler API
KeyboardNavigationDetector	Check which looks at widgets that are declared as clickable and ensures that they are also declared as focusable so that they can be reached via keyboard navigation.
LabelForDetector	Detector which finds unlabeled text fields
LayoutConsistencyDetector	Checks for consistency in layouts across different resource folders
LayoutInflationDetector	Looks for layout inflation calls passing null as the view root
LeakDetector	Looks for leaks via static fields
LocaleDetector	Checks for errors related to locale handling
LocaleFolderDetector	Checks for errors related to locale handling
LogDetector	Detector for finding inefficiencies and errors in logging calls.
ManifestDetector	Checks for issues in AndroidManifest files such as declaring elements in the wrong order.
ManifestPermissionAttributeDetector	Checks if the 'permission' attribute was set on a valid tag.
ManifestResourceDetector	Detects references to resources in the manifest that vary by configuration
ManifestTypoDetector	Checks for typos in manifest files
MathDetector	Looks for usages of Math methods which can be replaced with android.util.FloatMath methods to avoid casting.
MergeMarkerDetector	Looks for merge markers left behind in the source files.
MergeRootFrameLayoutDetector	Checks whether a root FrameLayout can be replaced with a <merge> tag.
MissingClassDetector	Checks to ensure that classes referenced in the manifest actually exist and are included
MissingIdDetector	Check which looks for missing id's in views where they are probably needed
NamespaceDetector	Checks for various issues related to XML namespaces
NegativeMarginDetector	Checks for negative margins in the following scenarios: In direct layout attribute usages, e.g.
NestedScrollingWidgetDetector	Checks whether a scroll view contains a nested scrolling widget
NetworkSecurityConfigDetector	Check which makes sure that a network-security-config descriptor file is valid and logical
NfcTechListDetector	Check which makes sure NFC tech lists do not include spaces around <tech> values since that's not handled correctly by the inflater
NonInternationalizedSmsDetector	Detector looking for text messages sent to an unlocalized phone number.
ObjectAnimatorDetector	Looks for issues around ObjectAnimator usages
ObsoleteLayoutParamsDetector	Looks for layout params on views that are "obsolete" - may have made sense when the view was added but there is a different layout parent now which does not use the given layout params.
OnClickDetector	Checks for missing onClick handlers
OverdrawDetector	Check which looks for overdraw problems where view areas are painted and then painted over, meaning that the bottom paint operation is a waste of time.
OverrideConcreteDetector	Checks that subclasses of certain APIs are overriding all methods that were abstract in one or more earlier API levels that are still targeted by the minSdkVersion of this project.
OverrideDetector	Checks for accidental overrides
ParcelDetector	Looks for Parcelable classes that are missing a CREATOR field
PermissionFinder	Utility for locating permissions required by an intent or content resolver
PermissionFinder.Result	A permission requirement given a name and operation
PermissionHolder.SetPermissionLookup	A convenience implementation of PermissionHolder backed by a set
PermissionRequirement	A permission requirement is a boolean expression of permission names that a caller must satisfy for a given Android API.
PluralsDatabase	Database used by the PluralsDetector to get information about plural forms for a given language
PluralsDetector	Checks for issues with quantity strings
PreferenceActivityDetector	Ensures that PreferenceActivity and its subclasses are never exported.
PrivateApiDetector	Checks that the code is not using reflection to access hidden Android APIs
PrivateKeyDetector	Looks for packaged private key files.
PrivateResourceDetector	Check which looks for access of private resources.
ProguardDetector	Check which looks for errors in Proguard files.
PropertyFileDetector	Check for errors in .property files
PxUsageDetector	Check for px dimensions instead of dp dimensions.
RangeConstraint
ReadParcelableDetector	Looks for Parcelable classes that are missing a CREATOR field
RecyclerViewDetector	Checks related to RecyclerView usage.
RegistrationDetector	Checks for missing manifest registrations for activities, services etc and also makes sure that they are registered with the correct tag
RelativeOverlapDetector	Check for potential item overlaps in a RelativeLayout when left- and right-aligned text items are used.
RequiredAttributeDetector	Ensures that layout width and height attributes are specified
ResourceCycleDetector	Checks for cycles in resource definitions
ResourcePrefixDetector	Ensure that resources in Gradle projects which specify a resource prefix conform to the given name TODO: What about id's?
ResourceUsageModel	A model for Android resource declarations and usages
ResourceUsageModel.Resource
RestrictionsDetector	Check which makes sure that an application restrictions file is correct.
RtlDetector	Check which looks for RTL issues (right-to-left support) in layouts
ScrollViewChildDetector	Check which looks at the children of ScrollViews and ensures that they fill/match the parent width instead of setting wrap_content.
SdCardDetector	Looks for hardcoded references to /sdcard/.
SecureRandomDetector	Checks for hardcoded seeds with random numbers.
SecureRandomGeneratorDetector	Checks for pseudo random number generator initialization issues
SecurityDetector	Checks that exported services request a permission.
ServiceCastDetector	Detector looking for casts on th result of context.getSystemService which are suspect
SetJavaScriptEnabledDetector	Looks for invocations of android.webkit.WebSettings.setJavaScriptEnabled.
SetTextDetector	Checks for errors related to TextView#setText and internationalization
SignatureOrSystemDetector	Checks if signatureOrSystem level permissions are set.
SQLiteDetector	Detector which looks for problems related to SQLite usage
SslCertificateSocketFactoryDetector
StateListDetector	Checks for unreachable states in an Android state list definition
StringAuthLeakDetector	Detector that looks for leaked credentials in strings.
StringFormatDetector	Check which looks for problems with formatting strings such as inconsistencies between translations or between string declaration and string usage in Java.
SupportAnnotationDetector	Looks up annotations on method calls and enforces the various things they express, e.g.
SystemPermissionsDetector	Checks if an application wants to use permissions that can only be used by system applications.
TextFieldDetector	Checks for usability problems in text fields: omitting inputType, or omitting a hint.
TextViewDetector	Checks for cases where a TextView should probably be an EditText instead
TitleDetector	Check which makes sure menu items specify a title
ToastDetector	Detector looking for Toast.makeText() without a corresponding show() call
TooManyViewsDetector	Checks whether a view hierarchy has too many views or has a suspiciously deep hierarchy
TranslationDetector	Checks for incomplete translations - e.g.
TrustAllX509TrustManagerDetector
TypoDetector	Check which looks for likely typos in Strings.
TypoDetector.TypoSuggestionInfo	Simple data holder used to return several values from TypoDetector.getSuggestions(String, TextFormat)
TypographyDetector	Checks for various typographical issues in string definitions.
TypographyDetector.ReplaceEdit	An object describing a single edit to be made.
TypoLookup	Database of common typos / misspellings.
UnpackedNativeCodeDetector	Checks for extractNativeLibs flag in AndroidManifest.xml when Native code is present.
UnsafeBroadcastReceiverDetector
UnsafeNativeCodeDetector
UnusedResourceDetector	Finds unused resources.
UseCompoundDrawableDetector	Checks whether the current node can be replaced by a TextView using compound drawables.
UselessViewDetector	Checks whether the current node can be removed without affecting the layout.
Utf8Detector	Checks that the encoding used in resource files is always UTF-8
VectorDetector	Looks for issues with vector icon generation
VectorDrawableCompatDetector	Finds all the vector drawables and checks references to them in layouts.
VectorPathDetector	Looks for issues with long vector paths
VersionChecks	Utility methods for checking whether a given element is surrounded (or preceded!) by an API check using SDK_INT (or other version checking utilities such as BuildCompat#isAtLeastN)
ViewConstructorDetector	Looks for custom views that do not define the view constructors needed by UI builders
ViewHolderDetector	Looks for ListView scrolling performance: should use view holder pattern
ViewTagDetector	Checks for missing view tag detectors
ViewTypeDetector	Detector for finding inconsistent usage of views and casts
WakelockDetector	Checks for problems with wakelocks (such as failing to release them) which can lead to unnecessary battery usage.
WearStandaloneAppDetector
WebViewDetector
WrongCallDetector	Checks for cases where the wrong call is being made
WrongCaseDetector	Check which looks for missing wrong case usage for certain layout tags.
WrongIdDetector	Checks for duplicate ids within a layout and within an included layout
WrongImportDetector	Checks for "import android.R", which seems to be a common source of confusion (see for example http://stackoverflow.com/questions/885009/r-cannot-be-resolved-android-error and many other forums).
WrongLocationDetector	Looks for problems with XML files being placed in the wrong folder

Enum Summary

Enum	Description
PermissionFinder.Operation	Operation that has a permission requirement -- such as a method call, a content resolver read or write operation, an intent, etc.
PluralsDatabase.Quantity