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介绍

RxBinding 是 Jake Wharton 的一个开源库，它提供了一套在 Android 平台上的基于 RxJava的 Binding API。
RxBinding 是对 Android View 事件的扩展，它帮助我们可以对 View 事件使用 RxJava 的各种操作；
RxBinding 提供了与 RxJava 一致的回调，简化了代码；
几乎支持所有的常用控件及事件；
支持 Kotlin；

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Rxbinding 3.0

rxbinding 3 需要AndroidX

引入依赖

    implementation ('com.jakewharton.rxbinding3:rxbinding:3.0.0') {
        exclude module: 'rxjava'
        exclude module: 'rxandroid'
    }
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rxbinding 默认会引入rxjava、rxandroid。如果项目内有自己的rx组件，需要刨包。

其他依赖，可以扩展：

implementation 'com.jakewharton.rxbinding3:rxbinding-core:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-appcompat:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-drawerlayout:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-leanback:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-recyclerview:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-slidingpanelayout:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-swiperefreshlayout:3.0.0-alpha2'
implementation 'com.jakewharton.rxbinding3:rxbinding-viewpager:3.0.0-alpha2'
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implementation 'com.jakewharton.rxbinding3:rxbinding-material:3.0.0-alpha2'
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举例 单点 并不可重复点击

        rxViewGcUtil.add(
				RxView.clicks(binding.btnRescue)
                .throttleFirst(1, TimeUnit.SECONDS)
                .subscribe(unit -> WebActivity.newRescue(getContext()))
                );
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因为是Rx结构，Disposable肯定处理，下面是小小的封装，集中管理Disposable

public class RxViewGcUtil {

    private CompositeDisposable compositeDisposable;

    public RxViewGcUtil() {
        compositeDisposable = new CompositeDisposable();
    }

    public void add(Disposable disposable) {
        if (disposable != null)
            compositeDisposable.add(disposable);
    }

    private void delete(Disposable disposable) {
        if (compositeDisposable != null) {
            compositeDisposable.delete(disposable);
        }
    }

    public void clear() {
        if (compositeDisposable != null) {
            compositeDisposable.clear();
            compositeDisposable = null;
        }
    }

}
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RxView 操作

转载自：https://www.jianshu.com/p/1ad3633ef0b4

显隐

RxView.visibility(binding.input).accept(true);   ==     bt_1.setVisibility(value ? View.VISIBLE : View.GONE);
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长按

 RxView.longClicks(bt_1)  ==   bt_1.setOnLongClickListener(new View.OnLongClickListener() {
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View被添加

RxView.attaches(bt_1);
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View被添加时触发

RxView.attachEvents(bt_1)
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View被移除

RxView.detaches(bt_1);
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View拖拽

  RxView.drags(ll_demo)
          .subscribe(new Consumer<DragEvent>() {
              @Override
              public void accept(DragEvent event) throws Exception {
                  //获取事件
                  int action = event.getAction();
                  switch (action) {
                      case DragEvent.ACTION_DRAG_STARTED:
                          Log.d("aaa", "开始拖拽");
                          break;
                      case DragEvent.ACTION_DRAG_ENDED:
                          Log.d("aaa", "结束拖拽");
                          break;
                      case DragEvent.ACTION_DRAG_ENTERED:
                          Log.d("aaa", "拖拽的view进入监听的view时");
                          break;
                      case DragEvent.ACTION_DRAG_EXITED:
                          Log.d("aaa", "拖拽的view离开监听的view时");
                          ll_demo.setBackgroundColor(Color.parseColor("#303F9F"));
                          break;
                      case DragEvent.ACTION_DRAG_LOCATION:
                          float x = event.getX();
                          float y = event.getY();
                          ll_demo.setBackgroundColor(Color.GRAY);
                          Log.i("aaa", "拖拽的view在监听view中的位置:x =" + x + ",y=" + y);
                          break;
                      case DragEvent.ACTION_DROP:
                          Log.i("aaa", "释放拖拽的view");

                          if(event != null && event.getLocalState() != null){
                              View localState = (View) event.getLocalState();
                              FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
                              ((ViewGroup) localState.getParent()).removeView(localState);
                              ll_demo.addView(localState, layoutParams);
                          }
                          break;
                  }
              }
          });
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View重绘

RxView.draws(view_demo) == view_demo.getViewTreeObserver().addOnDrawListener(new ViewTreeObserver.OnDrawLis
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globalLayouts 监听布局改变

RxView.globalLayouts(rootview) ==  rootview.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTre
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focusChanges 监听焦点变化

  RxView.focusChanges(et_demo)  ==  et_demo.setOnFocusChangeListener(new View.OnFocusChange
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keys 按键被按下

RxView.keys(et_demo) == et_demo.setOnKeyListener(new View.OnKeyListener() {
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hovers 悬停事件

layoutChanges和layoutChangeEvents 组件布局参数发生改变

RxView.layoutChanges(rootview) 
 RxView.layoutChangeEvents(rootview)

	==  rootview.addOnLayoutChangeListener(new View.OnLayoutChangeListener() 
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preDraws 将要绘制时

 RxView.preDraws(view_demo, new Func 

	 ==  view_demo.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreD
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滚动事件

 RxView.scrollChangeEvents(view_demo)
	
	 == view_demo.setOnScrollChangeListener(new View.OnScrollChangeLis
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systemUiVisibilityChanges 状态栏和导航栏可见和隐藏

 RxView.systemUiVisibilityChanges(rootview) 

	== rootview.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChange
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touches 触摸事件

 RxView.touches(et_demo) == et_demo.setOnTouchListener(new View.OnTouchLis
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例：

        RxView.touches(binding.btnLock, new Function1<MotionEvent, Boolean>() {
                    @Override
                    public Boolean invoke(MotionEvent motionEvent) {
                        if (binding.btnEngine.isSelectedState()) {
                            return true;
                        } else {
                            return false;
                        }
                    }
                })
                .throttleFirst(1, TimeUnit.SECONDS)
                .subscribe(unit -> {
                    AppLogUtils.i(TAG, "当 上面return true，走这里" );
                });
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如果不需要拦截事件，就需要把事件传递下去，touches方法默认拦截

binding.btnDefault.onTouchEvent(motionEvent);
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RxTextView

EditText 文本变化监听

    RxTextView.beforeTextChangeEvents(et_demo)
    RxTextView.textChangeEvents(et_demo)
    RxTextView.afterTextChangeEvents(et_demo)

		==   et_demo.addTextChangedListener(new TextWatcher() {
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例

        rxViewGcUtil.add(RxTextView.textChanges(binding.input).subscribe(new Consumer<CharSequence>() {
            @Override
            public void accept(CharSequence charSequence) throws Exception {
                
            }
        }));
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editorActions和editorActionEvents

  RxTextView.editorActions(et_demo)
      RxTextView.editorActionEvents(et_demo)

==    et_demo.setOnEditorActionListener(new TextView.OnEditorActionList
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RxViewGroup

当viewgroup添加或者删除子view时触发

    rootview.addView(view);
    rootview.removeView(view);
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    RxViewGroup.changeEvents(rootview)
==   rootview.setOnHierarchyChangeListener(new ViewGroup.OnHierarchyChangeL
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RxToolbar

navigationClicks

RxToolbar.navigationClicks(toolbar_normal

	== toolbar_normal.setNavigationOnClickListener(new View.OnCl
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itemClicks

RxToolbar.itemClicks(toolbar_normal).

	==toolbar_normal.setOnMenuItemClickListener(new Toolbar.OnMen
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RxMenuItem

clicks

RxMenuItem.clicks(menuItem)
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actionViewEvents

RxMenuItem.actionViewEvents(menuItem)
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RxRadioGroup

checkedChanges 监听选中变化

RxRadioGroup.checkedChanges(radio_g).

	==radio_g.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListene
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checked 选择单选按钮

RxRadioGroup.checked(radio_g).accept(radioButton2.getId());

	==    radio_g.check(radioButton2.getId());

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RxCompoundButton

RxCompoundButton.checkedChanges(radioButton1)

== radioButton1.setOnCheckedChangeListener(new CompoundButton.OnCheckedCha
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RxAutoCompleteTextView

 RxAutoCompleteTextView.itemClickEvents(auto_tv)
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RxPopupMenu

RxPopupMenu.itemClicks(popupMenu)

	== popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClick
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 RxPopupMenu.dismisses(popupMenu).subs

	==popupMenu.setOnDismissListener(new PopupMenu.OnDismissLis
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RxAdapter、RxAbsListView、RxAdapterView

    //适配器Adapter数据改变
    RxAdapter.dataChanges();
    //绝对视图滚动事件
    RxAbsListView.scrollEvents();

    RxAdapterView.selectionEvents();

    RxAdapterView.itemSelections();

    RxAdapterView.itemClicks();

    RxAdapterView.itemLongClicks();

    RxAdapterView.itemLongClickEvents();
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RxSeekBar

    RxSeekBar.userChanges(seekBar)

    RxSeekBar.systemChanges(seekBar)

    RxSeekBar.changeEvents(seekBar)

    RxSeekBar.changes(seekBar).

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RxRatingBar

    //星级滚动条进度改变事件
    RxRatingBar.ratingChanges();
    //星级滚动条进度改变事件
    RxRatingBar.ratingChangeEvents();
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RxSearchView

queryTextChanges 输入文本监听，文本变化后的文本

RxSearchView.queryTextChanges(search_view)
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queryTextChangeEvents

  RxSearchView.queryTextChangeEvents(search_view).subscribe(new Consumer<SearchViewQueryTextEvent>() {
      @Override
      public void accept(SearchViewQueryTextEvent searchViewQueryTextEvent) throws Exception {
          if(searchViewQueryTextEvent.isSubmitted()){
              //提交后的处理

          }else{
              //输入文本监听

          }
      }
  });
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query

  try {
      //设置SearchView的初始值
      RxSearchView.query(search_view, true).accept("asd");
  } catch (Exception e) {
      e.printStackTrace();
  }
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Rxbinding 4.0

更新于：20210528

RxBinding
RxJava binding APIs for Android UI widgets from the platform and support libraries.

Download
Platform bindings:

implementation 'com.jakewharton.rxbinding4:rxbinding:4.0.0'
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AndroidX library bindings:

implementation 'com.jakewharton.rxbinding4:rxbinding-core:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-appcompat:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-drawerlayout:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-leanback:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-recyclerview:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-slidingpanelayout:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-swiperefreshlayout:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-viewpager:4.0.0'
implementation 'com.jakewharton.rxbinding4:rxbinding-viewpager2:4.0.0'
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Google ‘material’ library bindings:

implementation 'com.jakewharton.rxbinding4:rxbinding-material:4.0.0'
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---

总结

。

参考地址

JakeWharton RxBinding：https://github.com/JakeWharton/RxBinding

ChinaCode：https://gitcode.net/mirrors/JakeWharton/rxbinding?utm_source=csdn_github_accelerator

Rx系列<第二十四篇>：RxJava之RxBinding3.0:https://www.jianshu.com/p/1ad3633ef0b4