Only the original thread that created a view hierarchy can touch its views.
时间: 2023-11-18 19:28:37 浏览: 31
This means that only the thread that created a view hierarchy (e.g. the main thread in Android) is allowed to modify or interact with the views within that hierarchy. If another thread attempts to modify a view, an exception will be thrown. This restriction is in place to ensure that views are accessed and modified in a thread-safe manner, preventing potential concurrency issues and ensuring that the user interface remains responsive and stable.
相关问题
calledfromwrongthreadexception:only the original thread that created a view hierarchy can touch its views.
这个异常通常出现在Android应用程序中,因为Android UI框架不是线程安全的。这意味着只有在主线程中才能访问UI元素,任何其他的线程都不能访问UI元素。如果在非UI线程中尝试访问UI元素,就会抛出 "CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views." 异常 [^1]。
如果你在非主线程中尝试访问UI元素,例如在一个后台线程中更新UI元素,就会抛出 "CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views." 异常。这是因为UI元素只能在主线程中更新。
如果你尝试将 "Only the main thread that created a view hierarchy ..." 改为 "Only the original thread that created a view hierarchy ...",那么这种修改可能会导致混淆,因为这两种说法意思不同。"Only the main thread that created a view hierarchy ..." 意味着只有主线程可以访问UI元素,而 "Only the original thread that created a view hierarchy ..." 意味着只有创建UI元素的线程可以访问这些UI元素。在大多数情况下,这两种说法都是等效的,因为主线程通常是创建UI元素的线程 [^2]。
安卓报错 Only the original thread that created a view hierarchy can touch its views.
这个错误通常出现在Android应用程序中,意味着只有UI线程才能访问或修改UI组件。当你尝试从一个非UI线程修改UI组件时,就会发生这个错误。这是因为Android是一个单线程模型,UI线程用来更新UI组件。如果你尝试从非UI线程更新UI组件,就可能导致应用程序崩溃。
为了解决这个问题,你可以在UI线程中更新UI组件。这可以通过使用Android提供的一些机制来实现,如Handler、AsyncTask、runOnUiThread等。使用这些机制,你可以在后台线程中执行一些耗时的操作,并在UI线程中更新UI组件。