可以在主线程中创建一个Handler并在其他线程中发送消息,进行 UI 更新。例如: publicclassMainActivityextendsAppCompatActivity{privateTextViewtextView;privateHandlerhandler;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);textView=find...
抛出异常:android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. 只有原始创建这个视图层次(view hierachy)的线程才能修改它的视图(view) 方法一:Handler实例 (1) 子类需要继承Handler类,并重写handleMessage(Message msg) 方法, 用于接受...
介绍 Android子线程不能操作UI组件,Google提供runUiOnThread( Runable runable )方法在子线程委托主线程更新UI组件 方法 void runUiOnThread( Runable runable ) 参数: Runable runable:ui主线程 返回值:无 返回值意义:无 作用:在子线程中调用出主线 Thread tht =newThread(newRunnable() { @Overridepublicvoidrun...
runUiOnThread更新主线程 Android中只有一个用于更新UI的主线程,如需要做其他耗时操作(eg:网络请求)时候需要开启新的线程(new Thread),防止耗时操作阻碍主线程的卡顿,经常在new thread,AsyncTask等操作过程中需要更新UI主线程的数据,更新UI采用Handler+thread,需要发送消息,接受处理消息(在回调方法中处理),比较繁琐。除...
二、Cocos2d-x编程中的runOnGLThread方法 cocos2d-x开发中,一旦涉及到Android平台移植自然要与Cocos2dxActivity这个东西打交道。Cocos2dxActivity是cocos2d-x开发团队的成果,它是一个抽象类,具体形式如下: public abstract class Cocos2dxActivity extends Activity implements Cocos2dxHelperListener {//...} ...
二、Cocos2d-x编程中的runOnGLThread方法 cocos2d-x开发中,一旦涉及到Android平台移植自然要与Cocos2dxActivity这个东西打交道。Cocos2dxActivity是cocos2d-x开发团队的成果,它是一个抽象类,具体形式如下: 1 publicabstractclassCocos2dxActivityextendsActivityimplementsCocos2dxHelperListener {//...} ...
真机环境下,UI的处理必须是单线程的,所以当 在一个已存在的UI上切换新的UI时,会出现Only run on the main thread 错误。告诉你,只能在主线程上运行。 那么解决方法是: dispatch_async(dispatch_get_main_queue(), ^{ [[[YXGSDK sharedInstance] GetViewController]presentViewController:ForgotPasswdV2animated:NO...
A web runtime built on Chrome. This project is currently unmaintained. - crosswalk/runtime/android/core/src/org/xwalk/core/XWalkUpdater.java at 1b9b80835e83e77390bd6cdbc03beb63f2a6f550 · crosswalk-project/crosswalk
write-host "`nClicking 'Calculate' button" $btn.click() [System.Threading.Thread]::Sleep(5000) One of several possible solutions is to first get some prerequest control value on the Web application, then trigger the HTTP request, and then use a delay loop until the prerequest cont...
When performing UI test automation, it is useful to think of every visual entity (controls, windows, and so on) on the host machine as part of a hierarchical tree structure with the desktop window as the root element. This is a common principle for most kinds of UI automation...