public Component findNextFocus() { // Find focus owner Component c = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner(); Container root = c == null ? null : c.getFocusCycleRootAncestor(); if (root != null) { FocusTraversalPolicy po…

The methods to move the focus to the next or to the previous focusable component are Component.transferFocus() and Component.transferFocusBackward(). This example modifies a component so that pressing the space bar or pressing F2 moves the focus to t…

UE4 中用于绘制自定义网格的插件CustomMeshComponent. 转载: UE4 Tutorial - Custom Mesh Component   Over the last few weeks I've been working on an old idea that I had and ended up starting from scratch. In my research I ended up finding the "Custom Mesh" componen…

另一鲜为人知的单例写法-ThreadLocal 源代码范例 当我阅读FocusFinder和Choreographer的时候,我发现这两类的单例实现和我们寻经常使用双重检查锁非常不一样.而是用来一个ThreadLocal.这个也能够实现单例啊,那这个与双重检查锁实现的单例有什么差别呢? 1.FocusFinder /** * The algorithm used for finding the next focusable view in a given direction * from a v…

refs : Object[]5 Array of configs to build up references to views on page. For example: Ext.define("MyApp.controller.Foo",{ extend:"Ext.app.Controller", refs:[{ref:'list', selector:'grid'}],}); 这将会产生一个this.getList()方法,该方法会通过Ext.Compone…

贴上一个我自己用过的阻尼滑动的ScrollView,像QQ里面那种滑动效果,尽管不是我写的,可是我认为还能够,贴出来做个记录,实用到的时候免得到处去找. 代码例如以下: /* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except i…

有些项目,需要让控件或者布局进行水平和垂直同时能拖拽,当然,ScrollView 和 HorizontalScrollView 的结合写法是一种写法.但是,这么写用户体验效果不佳,会有迟钝感,因此推荐下面的写法.继承之FrameLayout,代码是在网上找的. package com.test; import java.util.List; import android.content.Context; import android.graphics.Rect; import android.u…

/* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://w…

概述 Ext.Component是所有Ext组件的基类,这在Ext.Component的API中第一句话就提到了.然后第二段说明了它包含的基本功能:隐藏/显示.启用/禁用以及尺寸控制等.除了以上这些基本功能,其实还包含了很多东西.当然,在API中不可能面面俱到,那么,我们应当如何去理解这个组件基类呢? Ext.Component===DIV 如果将一个Ext.Component渲染到页面,会看到该组件会简单的在页面中添加一个DIV标记,就是这么简单.也就是说,Ext.Component就相当于一…

11.2.0.2升级到11.2.0.4 memory_target 设置过小,只有800M. 导致jserver jave virtual machine 组件无法安装, 建议升级之前至少memory_target调大到2000M.保证 JAVA_POOL_SIZE = 150M; 升级完成之后,可以memory_target调小到800m . GOAL Since the new Oracle JVM PSU patching scheme for 11.2.0.3, 11.2.04, and…