RxBinding 的简单使用

一、git地址

https://github.com/JakeWharton/RxBinding

二、androidStudio 使用

一般的包下面就用

compile 'com.jakewharton.rxbinding:rxbinding:0.4.0'

v4'support-v4' library bindings:

compile 'com.jakewharton.rxbinding:rxbinding-support-v4:0.4.0'

'appcompat-v7' library bindings:

compile 'com.jakewharton.rxbinding:rxbinding-appcompat-v7:0.4.0'

'design' library bindings:

compile 'com.jakewharton.rxbinding:rxbinding-design:0.4.0'

三、代码示例

• Button 防抖处理

   button = (Button) findViewById( R.id.bt ) ;
  
       RxView.clicks( button )
               .throttleFirst( 2 , TimeUnit.SECONDS )   //两秒钟之内只取一个点击事件，防抖操作
               .subscribe(new Action1() {
                   @Override
                   public void call(Void aVoid) {
                       Toast.makeText(MainActivity.this, "点击了", Toast.LENGTH_SHORT).show();
                   }
               }) ;
  

• 按钮的长按时间监听

   button = (Button) findViewById( R.id.bt ) ;
  
   //监听长按时间
   RxView.longClicks( button)
        .subscribe(new Action1() {
            @Override
           public void call(Void aVoid) {
           Toast.makeText(MainActivity.this, "long click  ！！", Toast.LENGTH_SHORT).show();
           }
       }) ;
  

• listView 的点击事件、长按事件处理

  listView = (ListView) findViewById( R.id.listview );
  
   List list = new ArrayList<>() ;
       for ( int i = 0 ; i < 40 ; i++ ){
           list.add( "sss" + i ) ;
       }
  
   final ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_expandable_list_item_1 );
       adapter.addAll( list );
  
   listView.setAdapter( adapter );
  
   //item click event
   RxAdapterView.itemClicks( listView )
       .subscribe(new Action1() {
           @Override
           public void call(Integer integer) {
           Toast.makeText(ListActivity.this, "item click " + integer , Toast.LENGTH_SHORT).show();
               }
           }) ;
  
   //item long click
   RxAdapterView.itemLongClicks( listView)
       .subscribe(new Action1() {
           @Override
           public void call(Integer integer) {
               Toast.makeText(ListActivity.this, "item long click " + integer , Toast.LENGTH_SHORT).show();
               }
           }) ;
  

- 用户登录界面，勾选同意隐私协议，登录按钮就变高亮

button = (Button) findViewById( R.id.login_bt );
checkBox = (CheckBox) findViewById( R.id.checkbox );

RxCompoundButton.checkedChanges( checkBox )
    .subscribe(new Action1() {
        @Override
        public void call(Boolean aBoolean) {
            button.setEnabled( aBoolean );
            button.setBackgroundResource( aBoolean ? R.color.button_yes : R.color.button_no );
            }
        }) ;
```

效果图

• 搜索的时候，关键词联想功能 。debounce()在一定的时间内没有操作就会发送事件。

   editText = (EditText) findViewById( R.id.editText );
   listView = (ListView) findViewById( R.id.listview );
  
   final ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_expandable_list_item_1 );
   listView.setAdapter( adapter );
  
   RxTextView.textChanges( editText )
               .debounce( 600 , TimeUnit.MILLISECONDS )
               .map(new Func1() {
                   @Override
                   public String call(CharSequence charSequence) {
                       //get the keyword
                       String key = charSequence.toString() ;
                       return key ;
                   }
               })
               .observeOn( Schedulers.io() )
               .map(new Func1>() {
                   @Override
                   public List call(String keyWord ) {
                       //get list
                       List dataList = new ArrayList() ;
                       if ( ! TextUtils.isEmpty( keyWord )){
                           for ( String s : getData()  ) {
                               if (s != null) {
                                   if (s.contains(keyWord)) {
                                       dataList.add(s);
                                   }
                               }
                           }
                       }
                       return dataList ;
                   }
               })
               .observeOn( AndroidSchedulers.mainThread() )
               .subscribe(new Action1>() {
                   @Override
                   public void call(List strings) {
                       adapter.clear();
                       adapter.addAll( strings );
                       adapter.notifyDataSetChanged();
                   }
               }) ;
  

  运行效果