來源：https://developer.android.com/reference/android/support/v7/widget/RecyclerView

RecyclerView

public class RecyclerView
extends ViewGroup implements ScrollingView, NestedScrollingChild2

java.lang.Object
↳	android.view.View
	↳	android.view.ViewGroup
		↳	android.support.v7.widget.RecyclerView

Known Direct Subclasses

BaseGridView,WearableRecyclerView

Known Indirect Subclasses

HorizontalGridView

,VerticalGridView

A flexible view for providing a limited window into a large data set.

Glossary of terms:

Adapter: A subclass of RecyclerView.Adapter responsible for providing views that represent items in a data set.
Position: The position of a data item within an Adapter

.
Index: The index of an attached child view as used in a call to getChildAt(int). Contrast with Position.
Binding: The process of preparing a child view to display data corresponding to a position within the adapter.
Recycle (view): A view previously used to display data for a specific adapter position may be placed in a cache for later reuse to display the same type of data again later. This can drastically improve performance by skipping initial layout inflation or construction.
Scrap (view): A child view that has entered into a temporarily detached state during layout. Scrap views may be reused without becoming fully detached from the parent RecyclerView, either unmodified if no rebinding is required or modified by the adapter if the view was considered dirty.
Dirty (view): A child view that must be rebound by the adapter before being displayed.

Positions in RecyclerView:

RecyclerView introduces an additional level of abstraction between the RecyclerView.Adapter andRecyclerView.LayoutManager to be able to detect data set changes in batches during a layout calculation. This saves LayoutManager from tracking adapter changes to calculate animations. It also helps with performance because all view bindings happen at the same time and unnecessary bindings are avoided.

For this reason, there are two types of position related methods in RecyclerView:

layout position: Position of an item in the latest layout calculation. This is the position from the LayoutManager's perspective.
adapter position: Position of an item in the adapter. This is the position from the Adapter's perspective.

These two positions are the same except the time between dispatching adapter.notify* events and calculating the updated layout.

Methods that return or receive *LayoutPosition* use position as of the latest layout calculation (e.g. getLayoutPosition(), findViewHolderForLayoutPosition(int)). These positions include all changes until the last layout calculation. You can rely on these positions to be consistent with what user is currently seeing on the screen. For example, if you have a list of items on the screen and user asks for the 5th element, you should use these methods as they'll match what user is seeing.

The other set of position related methods are in the form of *AdapterPosition*. (e.g. getAdapterPosition(),findViewHolderForAdapterPosition(int)) You should use these methods when you need to work with up-to-date adapter positions even if they may not have been reflected to layout yet. For example, if you want to access the item in the adapter on a ViewHolder click, you should use getAdapterPosition(). Beware that these methods may not be able to calculate adapter positions if notifyDataSetChanged() has been called and new layout has not yet been calculated. For this reasons, you should carefully handle NO_POSITION or null results from these methods.

When writing a RecyclerView.LayoutManager you almost always want to use layout positions whereas when writing an RecyclerView.Adapter, you probably want to use adapter positions.

Summary

Nested classes
`class`	`RecyclerView.Adapter<VH extends RecyclerView.ViewHolder>` Base class for an Adapter Adapters provide a binding from an app-specific data set to views that are displayed within a `RecyclerView`.
`class`	`RecyclerView.AdapterDataObserver` Observer base class for watching changes to an `RecyclerView.Adapter`.
`interface`	`RecyclerView.ChildDrawingOrderCallback` A callback interface that can be used to alter the drawing order of RecyclerView children.
`class`	`RecyclerView.EdgeEffectFactory` EdgeEffectFactory lets you customize the over-scroll edge effect for RecyclerViews.
`class`	`RecyclerView.ItemAnimator` This class defines the animations that take place on items as changes are made to the adapter.
`class`	`RecyclerView.ItemDecoration` An ItemDecoration allows the application to add a special drawing and layout offset to specific item views from the adapter's data set.
`class`	`RecyclerView.LayoutManager` A `LayoutManager` is responsible for measuring and positioning item views within a `RecyclerView` as well as determining the policy for when to recycle item views that are no longer visible to the user.
`class`	`RecyclerView.LayoutParams` `LayoutParams` subclass for children of `RecyclerView`.
`interface`	`RecyclerView.OnChildAttachStateChangeListener` A Listener interface that can be attached to a RecylcerView to get notified whenever a ViewHolder is attached to or detached from RecyclerView.
`class`	`RecyclerView.OnFlingListener` This class defines the behavior of fling if the developer wishes to handle it.
`interface`	`RecyclerView.OnItemTouchListener` An OnItemTouchListener allows the application to intercept touch events in progress at the view hierarchy level of the RecyclerView before those touch events are considered for RecyclerView's own scrolling behavior.
`class`	`RecyclerView.OnScrollListener` An OnScrollListener can be added to a RecyclerView to receive messages when a scrolling event has occurred on that RecyclerView.
`class`	`RecyclerView.RecycledViewPool` RecycledViewPool lets you share Views between multiple RecyclerViews.
`class`	`RecyclerView.Recycler` A Recycler is responsible for managing scrapped or detached item views for reuse.
`interface`	`RecyclerView.RecyclerListener` A RecyclerListener can be set on a RecyclerView to receive messages whenever a view is recycled.
`class`	`RecyclerView.SimpleOnItemTouchListener` An implementation of `RecyclerView.OnItemTouchListener` that has empty method bodies and default return values.
`class`	`RecyclerView.SmoothScroller` Base class for smooth scrolling.
`class`	`RecyclerView.State` Contains useful information about the current RecyclerView state like target scroll position or view focus.
`class`	`RecyclerView.ViewCacheExtension` ViewCacheExtension is a helper class to provide an additional layer of view caching that can be controlled by the developer.
`class`	`RecyclerView.ViewHolder` A ViewHolder describes an item view and metadata about its place within the RecyclerView.

XML attributes
`RecyclerView_layoutManager`

Constants
`int`	`HORIZONTAL`
`int`	`INVALID_TYPE`
`long`	`NO_ID`
`int`	`NO_POSITION`
`int`	`SCROLL_STATE_DRAGGING` The RecyclerView is currently being dragged by outside input such as user touch input.
`int`	`SCROLL_STATE_IDLE` The RecyclerView is not currently scrolling.
`int`	`SCROLL_STATE_SETTLING` The RecyclerView is currently animating to a final position while not under outside control.
`int`	`TOUCH_SLOP_DEFAULT` Constant for use with `setScrollingTouchSlop(int)`.
`int`	`TOUCH_SLOP_PAGING` Constant for use with `setScrollingTouchSlop(int)`.
`int`	`VERTICAL`

Inherited constants

From class android.view.ViewGroup

`int`	`CLIP_TO_PADDING_MASK`
`int`	`FOCUS_AFTER_DESCENDANTS`
`int`	`FOCUS_BEFORE_DESCENDANTS`
`int`	`FOCUS_BLOCK_DESCENDANTS`
`int`	`LAYOUT_MODE_CLIP_BOUNDS`
`int`	`LAYOUT_MODE_OPTICAL_BOUNDS`
`int`	`PERSISTENT_ALL_CACHES`
`int`	`PERSISTENT_ANIMATION_CACHE`
`int`	`PERSISTENT_NO_CACHE`
`int`	`PERSISTENT_SCROLLING_CACHE`

From class android.view.View

`int`	`ACCESSIBILITY_LIVE_REGION_ASSERTIVE`
`int`	`ACCESSIBILITY_LIVE_REGION_NONE`
`int`	`ACCESSIBILITY_LIVE_REGION_POLITE`
`int`	`AUTOFILL_FLAG_INCLUDE_NOT_IMPORTANT_VIEWS`
`String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DATE`
`String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DAY`
`String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_MONTH`
`String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_YEAR`
`String`	`AUTOFILL_HINT_CREDIT_CARD_NUMBER`
`String`	`AUTOFILL_HINT_CREDIT_CARD_SECURITY_CODE`
`String`	`AUTOFILL_HINT_EMAIL_ADDRESS`
`String`	`AUTOFILL_HINT_NAME`
`String`	`AUTOFILL_HINT_PASSWORD`
`String`	`AUTOFILL_HINT_PHONE`
`String`	`AUTOFILL_HINT_POSTAL_ADDRESS`
`String`	`AUTOFILL_HINT_POSTAL_CODE`
`String`	`AUTOFILL_HINT_USERNAME`
`int`	`AUTOFILL_TYPE_DATE`
`int`	`AUTOFILL_TYPE_LIST`
`int`	`AUTOFILL_TYPE_NONE`
`int`	`AUTOFILL_TYPE_TEXT`
`int`	`AUTOFILL_TYPE_TOGGLE`
`int`	`DRAG_FLAG_GLOBAL`
`int`	`DRAG_FLAG_GLOBAL_PERSISTABLE_URI_PERMISSION`
`int`	`DRAG_FLAG_GLOBAL_PREFIX_URI_PERMISSION`
`int`	`DRAG_FLAG_GLOBAL_URI_READ`
`int`	`DRAG_FLAG_GLOBAL_URI_WRITE`
`int`	`DRAG_FLAG_OPAQUE`
`int`	`DRAWING_CACHE_QUALITY_AUTO`
`int`	`DRAWING_CACHE_QUALITY_HIGH`
`int`	`DRAWING_CACHE_QUALITY_LOW`
`int`	`FIND_VIEWS_WITH_CONTENT_DESCRIPTION`
`int`	`FIND_VIEWS_WITH_TEXT`
`int`	`FOCUSABLE`
`int`	`FOCUSABLES_ALL`
`int`	`FOCUSABLES_TOUCH_MODE`
`int`	`FOCUSABLE_AUTO`
`int`	`FOCUS_BACKWARD`
`int`	`FOCUS_DOWN`
`int`	`FOCUS_FORWARD`
`int`	`FOCUS_LEFT`
`int`	`FOCUS_RIGHT`
`int`	`FOCUS_UP`
`int`	`GONE`
`int`	`HAPTIC_FEEDBACK_ENABLED`
`int`	`IMPORTANT_FOR_ACCESSIBILITY_AUTO`
`int`	`IMPORTANT_FOR_ACCESSIBILITY_NO`
`int`	`IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS`
`int`	`IMPORTANT_FOR_ACCESSIBILITY_YES`
`int`	`IMPORTANT_FOR_AUTOFILL_AUTO`
`int`	`IMPORTANT_FOR_AUTOFILL_NO`
`int`	`IMPORTANT_FOR_AUTOFILL_NO_EXCLUDE_DESCENDANTS`
`int`	`IMPORTANT_FOR_AUTOFILL_YES`
`int`	`IMPORTANT_FOR_AUTOFILL_YES_EXCLUDE_DESCENDANTS`
`int`	`INVISIBLE`
`int`	`KEEP_SCREEN_ON`
`int`	`LAYER_TYPE_HARDWARE`
`int`	`LAYER_TYPE_NONE`
`int`	`LAYER_TYPE_SOFTWARE`
`int`	`LAYOUT_DIRECTION_INHERIT`
`int`	`LAYOUT_DIRECTION_LOCALE`
`int`	`LAYOUT_DIRECTION_LTR`
`int`	`LAYOUT_DIRECTION_RTL`
`int`	`MEASURED_HEIGHT_STATE_SHIFT`
`int`	`MEASURED_SIZE_MASK`
`int`	`MEASURED_STATE_MASK`
`int`	`MEASURED_STATE_TOO_SMALL`
`int`	`NOT_FOCUSABLE`
`int`	`NO_ID`
`int`	`OVER_SCROLL_ALWAYS`
`int`	`OVER_SCROLL_IF_CONTENT_SCROLLS`
`int`	`OVER_SCROLL_NEVER`
`int`	`SCREEN_STATE_OFF`
`int`	`SCREEN_STATE_ON`
`int`	`SCROLLBARS_INSIDE_INSET`
`int`	`SCROLLBARS_INSIDE_OVERLAY`
`int`	`SCROLLBARS_OUTSIDE_INSET`
`int`	`SCROLLBARS_OUTSIDE_OVERLAY`
`int`	`SCROLLBAR_POSITION_DEFAULT`
`int`	`SCROLLBAR_POSITION_LEFT`
`int`	`SCROLLBAR_POSITION_RIGHT`
`int`	`SCROLL_AXIS_HORIZONTAL`
`int`	`SCROLL_AXIS_NONE`
`int`	`SCROLL_AXIS_VERTICAL`
`int`	`SCROLL_INDICATOR_BOTTOM`
`int`	`SCROLL_INDICATOR_END`
`int`	`SCROLL_INDICATOR_LEFT`
`int`	`SCROLL_INDICATOR_RIGHT`
`int`	`SCROLL_INDICATOR_START`
`int`	`SCROLL_INDICATOR_TOP`
`int`	`SOUND_EFFECTS_ENABLED`
`int`	`STATUS_BAR_HIDDEN`
`int`	`STATUS_BAR_VISIBLE`
`int`	`SYSTEM_UI_FLAG_FULLSCREEN`
`int`	`SYSTEM_UI_FLAG_HIDE_NAVIGATION`
`int`	`SYSTEM_UI_FLAG_IMMERSIVE`
`int`	`SYSTEM_UI_FLAG_IMMERSIVE_STICKY`
`int`	`SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN`
`int`	`SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION`
`int`	`SYSTEM_UI_FLAG_LAYOUT_STABLE`
`int`	`SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR`
`int`	`SYSTEM_UI_FLAG_LIGHT_STATUS_BAR`
`int`	`SYSTEM_UI_FLAG_LOW_PROFILE`
`int`	`SYSTEM_UI_FLAG_VISIBLE`
`int`	`SYSTEM_UI_LAYOUT_FLAGS`
`int`	`TEXT_ALIGNMENT_CENTER`
`int`	`TEXT_ALIGNMENT_GRAVITY`
`int`	`TEXT_ALIGNMENT_INHERIT`
`int`	`TEXT_ALIGNMENT_TEXT_END`
`int`	`TEXT_ALIGNMENT_TEXT_START`
`int`	`TEXT_ALIGNMENT_VIEW_END`
`int`	`TEXT_ALIGNMENT_VIEW_START`
`int`	`TEXT_DIRECTION_ANY_RTL`
`int`	`TEXT_DIRECTION_FIRST_STRONG`
`int`	`TEXT_DIRECTION_FIRST_STRONG_LTR`
`int`	`TEXT_DIRECTION_FIRST_STRONG_RTL`
`int`	`TEXT_DIRECTION_INHERIT`
`int`	`TEXT_DIRECTION_LOCALE`
`int`	`TEXT_DIRECTION_LTR`
`int`	`TEXT_DIRECTION_RTL`
`String`	`VIEW_LOG_TAG`
`int`	`VISIBLE`

Inherited fields

From class android.view.View

`public static final Property<View, Float>`	`ALPHA`
`protected static final int[]`	`EMPTY_STATE_SET`
`protected static final int[]`	`ENABLED_FOCUSED_SELECTED_STATE_SET`
`protected static final int[]`	`ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`ENABLED_FOCUSED_STATE_SET`
`protected static final int[]`	`ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`ENABLED_SELECTED_STATE_SET`
`protected static final int[]`	`ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`ENABLED_STATE_SET`
`protected static final int[]`	`ENABLED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`FOCUSED_SELECTED_STATE_SET`
`protected static final int[]`	`FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`FOCUSED_STATE_SET`
`protected static final int[]`	`FOCUSED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_FOCUSED_SELECTED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_SELECTED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_STATE_SET`
`protected static final int[]`	`PRESSED_ENABLED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_FOCUSED_SELECTED_STATE_SET`
`protected static final int[]`	`PRESSED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_FOCUSED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_SELECTED_STATE_SET`
`protected static final int[]`	`PRESSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`protected static final int[]`	`PRESSED_STATE_SET`
`protected static final int[]`	`PRESSED_WINDOW_FOCUSED_STATE_SET`
`public static final Property<View, Float>`	`ROTATION`
`public static final Property<View, Float>`	`ROTATION_X`
`public static final Property<View, Float>`	`ROTATION_Y`
`public static final Property<View, Float>`	`SCALE_X`
`public static final Property<View, Float>`	`SCALE_Y`
`protected static final int[]`	`SELECTED_STATE_SET`
`protected static final int[]`	`SELECTED_WINDOW_FOCUSED_STATE_SET`
`public static final Property<View, Float>`	`TRANSLATION_X`
`public static final Property<View, Float>`	`TRANSLATION_Y`
`public static final Property<View, Float>`	`TRANSLATION_Z`
`protected static final int[]`	`WINDOW_FOCUSED_STATE_SET`
`public static final Property<View, Float>`	`X`
`public static final Property<View, Float>`	`Y`
`public static final Property<View, Float>`	`Z`

Public constructors
`RecyclerView(Context context)`
`RecyclerView(Context context, AttributeSet attrs)`
`RecyclerView(Context context, AttributeSet attrs, int defStyle)`

Public methods
`void`	`addFocusables(ArrayList<View> views, int direction, int focusableMode)`
`void`	`addItemDecoration(RecyclerView.ItemDecoration decor)` Add an `RecyclerView.ItemDecoration` to this RecyclerView.
`void`	`addItemDecoration(RecyclerView.ItemDecoration decor, int index)` Add an `RecyclerView.ItemDecoration` to this RecyclerView.
`void`	`addOnChildAttachStateChangeListener(RecyclerView.OnChildAttachStateChangeListener listener)` Register a listener that will be notified whenever a child view is attached to or detached from RecyclerView.
`void`	`addOnItemTouchListener(RecyclerView.OnItemTouchListener listener)` Add an `RecyclerView.OnItemTouchListener` to intercept touch events before they are dispatched to child views or this view's standard scrolling behavior.
`void`	`addOnScrollListener(RecyclerView.OnScrollListener listener)` Add a listener that will be notified of any changes in scroll state or position.
`void`	`clearOnChildAttachStateChangeListeners()` Removes all listeners that were added via`addOnChildAttachStateChangeListener(OnChildAttachStateChangeListener)`.
`void`	`clearOnScrollListeners()` Remove all secondary listener that were notified of any changes in scroll state or position.
`int`	`computeHorizontalScrollExtent()` Compute the horizontal extent of the horizontal scrollbar's thumb within the horizontal range.
`int`	`computeHorizontalScrollOffset()` Compute the horizontal offset of the horizontal scrollbar's thumb within the horizontal range.
`int`	`computeHorizontalScrollRange()` Compute the horizontal range that the horizontal scrollbar represents.
`int`	`computeVerticalScrollExtent()` Compute the vertical extent of the vertical scrollbar's thumb within the vertical range.
`int`	`computeVerticalScrollOffset()` Compute the vertical offset of the vertical scrollbar's thumb within the vertical range.
`int`	`computeVerticalScrollRange()` Compute the vertical range that the vertical scrollbar represents.
`boolean`	`dispatchNestedFling(float velocityX, float velocityY, boolean consumed)`
`boolean`	`dispatchNestedPreFling(float velocityX, float velocityY)`
`boolean`	`dispatchNestedPreScroll(int dx, int dy, int[] consumed, int[] offsetInWindow)`
`boolean`	`dispatchNestedPreScroll(int dx, int dy, int[] consumed, int[] offsetInWindow, int type)` Dispatch one step of a nested scroll in progress before this view consumes any portion of it.
`boolean`	`dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int[] offsetInWindow, int type)` Dispatch one step of a nested scroll in progress.
`boolean`	`dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int[] offsetInWindow)`
`void`	`draw(Canvas c)`
`boolean`	`drawChild(Canvas canvas, View child, long drawingTime)`
`View`	`findChildViewUnder(float x, float y)` Find the topmost view under the given point.
`View`	`findContainingItemView(View view)` Traverses the ancestors of the given view and returns the item view that contains it and also a direct child of the RecyclerView.
`RecyclerView.ViewHolder`	`findContainingViewHolder(View view)` Returns the ViewHolder that contains the given view.
`RecyclerView.ViewHolder`	`findViewHolderForAdapterPosition(int position)` Return the ViewHolder for the item in the given position of the data set.
`RecyclerView.ViewHolder`	`findViewHolderForItemId(long id)` Return the ViewHolder for the item with the given id.
`RecyclerView.ViewHolder`	`findViewHolderForLayoutPosition(int position)` Return the ViewHolder for the item in the given position of the data set as of the latest layout pass.
`RecyclerView.ViewHolder`	`findViewHolderForPosition(int position)` This method was deprecated in API level 22.1.0. use `findViewHolderForLayoutPosition(int)`or `findViewHolderForAdapterPosition(int)`
`boolean`	`fling(int velocityX, int velocityY)` Begin a standard fling with an initial velocity along each axis in pixels per second.
`View`	`focusSearch(View focused, int direction)` Since RecyclerView is a collection ViewGroup that includes virtual children (items that are in the Adapter but not visible in the UI), it employs a more involved focus search strat 相關推薦 android官方API之RecyclerView 來源：https://developer.android.com/reference/android/support/v7/widget/RecyclerView RecyclerView public class RecyclerView extends ViewGro android官方API之ConstraintLayout 來源：https://developer.android.com/reference/android/support/constraint/ConstraintLayout ConstraintLayout public class ConstraintLayout extends android官方API之AppCompatActivity 來源：https://developer.android.com/reference/android/support/v7/app/AppCompatActivity AppCompatActivity public class AppCompatActivity extends& android官方API之Toolbar 來源：https://developer.android.com/reference/android/widget/Toolbar Toolbar public class Toolbar extends ViewGroup jav android官方API之EditText 來源：https://developer.android.com/reference/android/widget/EditText EditText public class EditText extends TextView j android官方API之AsyncTask 來源：https://developer.android.com/reference/android/os/AsyncTask AsyncTask public abstract class AsyncTask extends Object android官方API之MediaPlayer 來源：https://developer.android.com/reference/android/media/MediaPlayer MediaPlayer public class MediaPlayer extends Object implements android官方API之ContentProvider 來源：https://developer.android.com/reference/android/content/ContentProvider ContentProvider public abstract class ContentProvider extends android官方API之BroadcastReceiver 來源：https://developer.android.com/reference/android/content/BroadcastReceiver BroadcastReceiver public abstract class BroadcastReceiver extend Android 控制元件之 RecyclerView（一）—— 載入檢視和佈局選擇本文目錄一、概述二、列表檢視的處理 1. item 的佈局檔案 2. 構造 Adapter 類 3. 佈局管理器 1）LinearLayoutManager 2）GridLayoutManager Android UI設計之RecyclerView RecyclerView簡介 RecyclerView是繼ListView和GridView後Google又一力作，它不僅可以很方便的實現瀑布流效果，而且大幅度降低了檢視的耦合性，在設計上有很高的自由度。本文主要分析RecyclerView的使用技巧以及優化。使用前 Android控制元件之RecyclerView的基本使用三、RecyclerView使用時要匯入android.suport.v7.wedget.RecyclerView包。 RecyclerView實現新增和刪除的簡單例子 <span style="font-size:18px;">public class MainActivity extend [Android開發]從Android官方Demo談RecyclerView的用法 RecyclerView是Android5.0中出現的新控制元件，官方API解釋就一句話： A flexible view for providing a limited window into a large data set 整體架構如下圖： Android官方資料之-OTA Package Tools The ota_from_target_files tool provided inbuild/tools/releasetools can build two types of package: full andincremental. The tool takes the target-files Android之RecyclerView簡單使用(三) 圖片 vertica pack listview sdn art code offset ddc 使用過ListView滴小夥伴都知道。ListView有這樣一個屬性android:divider，用來設置每一個item之間切割線滴屬性。問題來了，那麽R Android官方MVVM框架實現組件化之整體結構並且 pat 功能模塊 txt cti stat 開發人員 extends 一、google官方MVVM框架講解我前面對比了MVC和MVP《兩張圖看懂Android開發中MVC與MVP的區別》，可以相對於MVC我們的MVP是有多優越，但是Android開發現在已經開始流 Android官方架構組件介紹之LifeCycle(一) mave 工程視圖平時清理 star new 內部 serve Android官方架構組件介紹之LifeCycle 下面是官方提供的Android App開發的架構圖：從上圖可以看到一些關鍵字：ViewModel,LiveData,Room等。其實看了上面視頻的 Android官方架構組件介紹之ViewModel（三） gets use 時間管理 src context per and 發生方法 ViewModel 像Activity，Fragment這類應用組件都有自己的生命周期並且是被Android的Framework所管理的。Framework可能會根據用戶的一些操作和設備的狀態對 Android官方架構組件介紹之應用（四）怎麽 nbsp 註冊 bool 其他 info get inf prot 講一個項目常見的功能，友盟統計功能例如一個項目有很多多modlue,每個裏面modlue都有Activity，Activity需要友盟統一，Fragment也需要友盟統計。一般做法就是繼承一個Bas Android之RecyclerView多佈局做一個專案的主頁面的時候，想要它呈現出來的效果，不單一，更豐富那就要使用多佈局來展現出來，那麼就要思考一個問題。他呈現的是多個佈局，怎麼才能展現出來不同的佈局？邏輯很簡單，通過設定幾個flag,來表示這些佈局當前顯示的是哪個佈局，接下來，和程式碼結合瞭解一下：第一部分：有幾個佈局就寫幾個fla 搜尋基礎教學 Mysql入門 Sql入門 Android入門 Docker入門 Go語言入門 Ruby程式入門 Python入門 Python進階 Django入門 Python爬蟲入門最近訪問首頁前端設計程式設計免費資源實用技巧資料庫資訊字典 Copyright © 2002-2020 程式人生 796T.COM All rights reserved.

android官方API之RecyclerView

RecyclerView

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