Android Resources Validation
Image without contentDescription
Attribute unused on older versions
Fragment not instantiatable
Incorrect order of elements in manifest
Layout Inflation without a Parent
Missing commit() on SharedPreference editor
Obsolete Gradle Dependency
ScrollView size validation
Target SDK attribute is not targeting latest version
TextView Internationalization
Padding and margin symmetry
Using left/right instead of start/end attributes
Inefficient layout weight
Nested layout weights
Node can be replaced by a TextView with compound drawables
Overdraw: Painting regions more than once
View Holder Candidates
Missing support for Google App Indexing
Image defined in density-independent drawable folder
Field can be local
Redundant local variable
Actual method parameter is the same constant
Declaration access can be weaker
Declaration can have final modifier
Method can be void
Entry Points
Unused declaration
Unused method parameters
Default File Template Usage
Unused import
Explicit type can be replaced with <>
Declaration has Javadoc problems
Constant conditions & exceptions
Suspicious variable/parameter name combination
Typo
Redundant type cast
XML tag empty body