valfab:View=findViewById(R.id.fab)fab.setOnClickListener{view->Snackbar.make(view,"Here's a Snackbar",Snackbar.LENGTH_LONG).setAction("Action",null).show()}
자바
FloatingActionButtonfab=findViewById(R.id.fab);fab.setOnClickListener(newView.OnClickListener(){@OverridepublicvoidonClick(Viewview){Snackbar.make(view,"Here's a Snackbar",Snackbar.LENGTH_LONG).setAction("Action",null).show();}});
이 페이지에 나와 있는 콘텐츠와 코드 샘플에는 콘텐츠 라이선스에서 설명하는 라이선스가 적용됩니다. 자바 및 OpenJDK는 Oracle 및 Oracle 계열사의 상표 또는 등록 상표입니다.
최종 업데이트: 2025-08-21(UTC)
[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["필요한 정보가 없음","missingTheInformationINeed","thumb-down"],["너무 복잡함/단계 수가 너무 많음","tooComplicatedTooManySteps","thumb-down"],["오래됨","outOfDate","thumb-down"],["번역 문제","translationIssue","thumb-down"],["샘플/코드 문제","samplesCodeIssue","thumb-down"],["기타","otherDown","thumb-down"]],["최종 업데이트: 2025-08-21(UTC)"],[],[],null,["# Add a floating action button\n\nTry the Compose way \nJetpack Compose is the recommended UI toolkit for Android. Learn how to add components in Compose. \n[Floating Action Button →](/develop/ui/compose/components/fab) \n\n\u003cbr /\u003e\n\nA floating action button (FAB) is a circular button that triggers the primary\naction in your app's UI. This document shows how to add a FAB to your layout,\ncustomize some of its appearance, and respond to button taps.\n\nTo learn more about how to design a FAB for your app according to the Material\nDesign Guidelines, see [Material Design\nFAB](https://m3.material.io/components/floating-action-button/overview)\n.\n**Figure 1.** A floating action button (FAB).\n\nAdd the floating action button to your layout\n---------------------------------------------\n\nThe following code shows how the\n[`FloatingActionButton`](/reference/com/google/android/material/floatingactionbutton/FloatingActionButton)\nappears in your layout file: \n\n```xml\n\u003ccom.google.android.material.floatingactionbutton.FloatingActionButton\n android:id=\"@+id/fab\"\n android:layout_width=\"wrap_content\"\n android:layout_height=\"wrap_content\"\n android:layout_gravity=\"end|bottom\"\n android:src=\"@drawable/ic_my_icon\"\n android:contentDescription=\"@string/submit\"\n android:layout_margin=\"16dp\" /\u003e\n```\n\nBy default, a FAB is colored by the `colorAccent` attribute, which you can\n[customize with the theme's color\npalette](/guide/topics/ui/look-and-feel/themes#ColorPalette).\n\nYou can configure other FAB properties using XML attributes or corresponding\nmethods, such as the following:\n\n- The size of the FAB, using the `app:fabSize` attribute or the [`setSize()`](/reference/com/google/android/material/floatingactionbutton/FloatingActionButton#setSize(int)) method\n- The ripple color of the FAB, using the `app:rippleColor` attribute or the [`setRippleColor()`](/reference/com/google/android/material/floatingactionbutton/FloatingActionButton#setRippleColor(int)) method\n- The FAB icon, using the `android:src` attribute or the [`setImageDrawable()`](/reference/android/widget/ImageView#setImageDrawable(android.graphics.drawable.Drawable)) method\n\nRespond to button taps\n----------------------\n\nYou can then apply an\n[`View.OnClickListener`](/reference/android/view/View.OnClickListener) to\nhandle FAB taps. For example, the following code displays a\n[`Snackbar`](/reference/com/google/android/material/snackbar/Snackbar) when\nthe user taps the FAB: \n\n### Kotlin\n\n```kotlin\nval fab: View = findViewById(R.id.fab)\nfab.setOnClickListener { view -\u003e\n Snackbar.make(view, \"Here's a Snackbar\", Snackbar.LENGTH_LONG)\n .setAction(\"Action\", null)\n .show()\n}\n```\n\n### Java\n\n```java\nFloatingActionButton fab = findViewById(R.id.fab);\nfab.setOnClickListener(new View.OnClickListener() {\n @Override\n public void onClick(View view) {\n Snackbar.make(view, \"Here's a Snackbar\", Snackbar.LENGTH_LONG)\n .setAction(\"Action\", null).show();\n }\n});\n```\n\nFor more information about the capabilities of the FAB, see the API reference\nfor the\n[`FloatingActionButton`](/reference/com/google/android/material/floatingactionbutton/FloatingActionButton)."]]