AndroidStudio中各图标含义

Symbols

Common

IconDescriptionClassAbstract Java classAnnotationEnumerationExceptionFinal Java classInterfaceJava class that contains declaration of the main() method.Test caseJava class located out of the source root. Refer to the section Configuring Content Roots for details.Java class excluded from compilation.MethodAbstract methodFieldVariablePropertyParameterElementDirectoryModuleGroup of modulesPackageSource rootTest rootExcluded rootResourcesTest resourcesGenerated source rootsGenerated test source rootsVisibility modifiersRead-only class, e.g. from a jar of an external library.privateprotectedpackage protectedstaticpublic

Data sources

IconDescriptionDB data source. Also, DBMS-specific icons are used:

 DB2

 Derby

 H2

 HSQLDB

 MySQL

 ODBC

 Oracle

 PostgreSQL

 SQL Server

 SQLite

 Sybase

DB data source with the read-only status, e.g.  for DB2.DDL data sourceSchemaTableColumnA NOT NULL columnColumn with a primary keyColumn with a foreign keyColumn with an indexPrimary keyForeign keyIndexViewStored procedure or function