什么是Handler? Android 的官方解释: 文档分节1:A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue. Each Handler instance is associated with a single thread and that thread's message queue. When you create…
In Android, Handler classes should be static or leaks might occur, Messages enqueued on the application thread's MessageQueue also retain their target Handler. If the Handler is an inner class, its outer class will be retained as well. To avoid leaki…
最经面试中,技术面试中有一个是Handler的消息机制,细细想想,我经常用到的Handler无非是在主线程(或者说Activity)新建一个Handler对象,另外一个Thread是异步加载数据,同时当他加载完数据后就send到主线程中的那个Handler对象,接着Handler来处理,刚才发送的一些消息. public class HandlerTestActivity extends Activity { private TextView tv; private static final i…
Android handler 可能会造成内存泄露 Android Studio 使用 Handler 时: private Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { super.handleMessage(msg); // handle something } }; Android Studio 弹出了警告: This Handler class should be s…
深入理解之 Android Handler 一,相关概念 在Android中如果通过用户界面(如button)来来启动线程,然后再线程中的执行代码将状态信息输出到用户界面(如文本框),这时候就会抛出以下的异常信息: 5-12 13:33:04.393: ERROR/JavaBinder(1029):android.view.ViewRoot$CalledFromWrongThreadException:Onlythe original thread that created a view h…
