完整内容，请查看：http://www.zhdoc.net/android/reference/android/widget/Filter.html

Filter

public abstract class Filter
extends Object

java.lang.Object
↳	android.widget.Filter

A filter constrains data with a filtering pattern.
Filter使用过滤模板来约束数据。

Filters are usually created by Filterable classes.
Filter通常由Filterable类来创建。

Filtering operations performed by calling filter(CharSequence) or filter(CharSequence, android.widget.Filter.FilterListener) are performed asynchronously. When these methods are called, a filtering request is posted in a request queue and processed later. Any call to one of these methods will cancel any previous non-executed filtering request.
过滤操作通过调用filter(CharSequence)或filter(CharSequence, android.widget.Filter.FilterListener)来异步执行。当调用这些方法时，将在请求队列中发布一个过滤请求，并在稍后处理。任何对其中一个方法的调用都将取消先前未执行的过滤请求。

摘要

嵌套类
`interface`	`Filter.FilterListener` Listener used to receive a notification upon completion of a filtering operation. 在完成过滤操作后，用于接收通知的监听器。
`class`	`Filter.FilterResults` Holds the results of a filtering operation. 保存一个过滤操作的结束。

Public构造方法
`Filter()` Creates a new asynchronous filter. 创建一个新异步Filter。

Public方法
`CharSequence`	`convertResultToString(Object resultValue)` Converts a value from the filtered set into a CharSequence. 将一个值从过滤后的集转换成CharSequence。
`final void`	`filter(CharSequence constraint)` Starts an asynchronous filtering operation. 开始一个异步过滤操作。

Android7.0中文文档（API）-- Filter

完整内容，请查看：http://www.zhdoc.net/android/reference/android/widget/Filter.html

Filter

摘要

嵌套类

Public构造方法

Public方法

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