AsynclayoutInflater原始碼分析

asynclayoutinflater特點

用法

//初始化        

asynclayoutinflater masynclayoutinflater = new asynclayoutinflater(context);
......
//呼叫
masynclayoutinflater.inflate(layoutid, parent, new asynclayoutinflater.oninflatefinishedlistener() 
});

關鍵屬性和方法

layoutinflater minflater;

handler mhandler;
inflatethread minflatethread;

handler mhandler

inflatethread minflatethread

public void inflate(@layoutres int resid, @nullable viewgroup parent,

@nonnull oninflatefinishedlistener callback)

@uithread

public void inflate(@layoutres int resid, @nullable viewgroup parent,
@nonnull oninflatefinishedlistener callback) 
inflaterequest request = minflatethread.obtainrequest();
request.inflater = this;
request.resid = resid;
request.parent = parent;
request.callback = callback;
minflatethread.enqueue(request);
}

public void enqueue(inflaterequest request)  catch (interruptedexception e) 

}

關鍵類—inflatethread

inflatethread 繼承於thread，是個單例項執行緒類，其關鍵成員fields如下

private arrayblockingqueuemqueue = new arrayblockingqueue<>(10);

private synchronizedpoolmrequestpool = new synchronizedpool<>(10);

static

private callback mhandlercallback = new callback() 

request.callback.oninflatefinished(
request.view, request.resid, request.parent);
minflatethread.releaserequest(request);
return true;
}};

//復用inflaterequest

public inflaterequest obtainrequest() 
return obj;
}//**inflaterequest
public void releaserequest(inflaterequest obj)

releaserequest將已經inflate過的inflaterequest加入復用物件池。

關鍵類—basicinflater

private

static
class
basicinflater
extends
layoutinflater;.
....
.@override
protected view oncreateview
(string name, attributeset attrs)
throws classnotfoundexception 
}catch
(classnotfoundexception e)
}return
super
.oncreateview
(name, attrs);}
}

synchronizedpool（androidx.core.util.pools.synchronizedpool）

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