由网友(粑粑不能吃丶)分享简介：我有一个地图视图的活动，展示了一些 OverlayItems 。在覆盖的中的onTap 的方法，我想引发新的活动，显示了这个覆盖照片的全屏，例如。I have a map view activity that shows a few OverlayItems. In the onTap method of an ov...

我有一个地图视图的活动，展示了一些 OverlayItems 。在覆盖的中的onTap 的方法，我想引发新的活动，显示了这个覆盖照片的全屏，例如。

I have a map view activity that shows a few OverlayItems. In the onTap method of an overlay, I want to trigger a new activity that shows this overlay photo as a fullscreen, for example.

当我这样做，在我的叠加类：

When I do this inside my overlay class:

Intent intent = new Intent();
intent.setClass(getApplicationContext, FullscreenView.class);
startActivity(intent);

..它找不到应用程序上下文，因为我不是一个活动的范围。

.. it can't find an application context, as I am not in the scope of an activity.

当我一个方法添加到我的主要活动，比方说 startFullscreen ：

When I add a method to my main activity, let's say startFullscreen:

public static void startFullscreen() {
    if (sCurrentPhoto != null) {
        Intent intent = new Intent();
        intent.setClass(getApplicationContext(), FullscreenView.class);
        startActivity(intent);          
    }
}

我不能叫 getApplicationContext（）和 startActivity（），因为我在一个静态的背景下。我需要静态方法但是调用它在覆盖类如 MainView.startFullscreen（）。

I can not call getApplicationContext() and startActivity(), because I am in a static context. I need the static method however to call it in the Overlay class like MainView.startFullscreen().

简而言之：我如何开始一个活动从非活动类

推荐答案

您中的onTap 覆盖接收图形页面从你可以得到上下文：

Your onTap override receives the MapView from which you can obtain the Context:

@Override
public boolean onTap(GeoPoint p, MapView mapView)
{
    // ...

    Intent intent = new Intent();
    intent.setClass(mapView.getContext(), FullscreenView.class);
    startActivity(intent);

    // ...
}