如何开始从Android的线程类的活动？ [英] How to start an activity from a thread class in android?

问题描述

我伸出一个线程类，并从该类我要开始一个活动。如何做到这一点？

I am extending a thread class and from that class I want to start an activity. How to do this?

推荐答案

您需要调用 startActivity（）应用程序的主线程上。做到这一点的方法之一是通过执行以下操作：

You need to call startActivity() on the application's main thread. One way to do that is by doing the following:

1. 初始化处理程序，并将其与应用程序的主线程关联起来。

1. Initialize a Handler and associate it with the application's main thread.

Handler handler = new Handler(Looper.getMainLooper());

裹在code将启动活动内部的匿名的Runnable 类，并通它的处理程序＃后（可运行）方法。

Wrap the code that will start the Activity inside an anonymous Runnable class and pass it to the Handler#post(Runnable) method.

handler.post(new Runnable() {
    @Override
    public void run() {
        Intent intent = new Intent (MyActivity.this, NextActivity.class);
        startActivity(intent);
    }
});

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