Android的OnLongClickListener不是射击的MapView [英] Android OnLongClickListener not firing on MapView

问题描述

我刚刚注册在我的我的图形页面的OnLongClickListener上一个Android应用程序，我目前正在写。出于某种原因，但是onLongClick不会触发事件。

I just registered an OnLongClickListener on my my MapView on an Android app I'm currently writing. For some reason however the onLongClick event doesn't fire.

下面就是我写至今：

public class FriendMapActivity extends MapActivity implements OnLongClickListener {
    private static final int CENTER_MAP = Menu.FIRST;
    private MapView mapView;
    private MapController mapController;
    //...
    private boolean doCenterMap = true;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.friendmapview);
        this.mapView = (MapView) findViewById(R.id.map_view);
        this.mapController = mapView.getController();

        mapView.setBuiltInZoomControls(true);
        mapView.displayZoomControls(true);
        mapView.setLongClickable(true);
        mapView.setOnLongClickListener(new OnLongClickListener() {
            public boolean onLongClick(View v) {
                //NEVER FIRES!!
                return false;
            }
        });

        //...
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        switch (keyCode) {
        case KeyEvent.KEYCODE_3:
            mapController.zoomIn();
            break;
        case KeyEvent.KEYCODE_1:
            mapController.zoomOut();
            break;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        int actionType = ev.getAction();
        switch (actionType) {
        case MotionEvent.ACTION_MOVE:
            doCenterMap = false;
            break;
        }

        return super.dispatchTouchEvent(ev);
    }

        ...
}

五月覆盖这我加入的原因这个问题？有什么建议？

May overlays which I'm adding cause the problem?? Any suggestions?

推荐答案

在此同时，我发现了解决方案（或解决方法，把它作为你喜欢）我自己。我通过这个问题的工作方式是使用GestureDetector，并通过实现根据OnGestureListener接口转发所有的触摸事件到该对象。

In the mean time I found the "solution" (or workaround, call it as you like) by myself. The way I worked through this issue is by using a GestureDetector and forwarding all touch events to that object by implementing an according OnGestureListener interface.

我已经发布了一些code在我的博客如果有人有兴趣： http://juristr.com/blog/2009/12/图形页面 - 犯规 - 火onlongclick事件/

I've posted some code on my blog if anyone is interested: http://juristr.com/blog/2009/12/mapview-doesnt-fire-onlongclick-event/

不要问我为什么不直接在图形页面挂钩的OnLongClickListener工作。如果有人有一个解释，让我知道：）

Don't ask me why this didn't work by hooking up the OnLongClickListener directly on the MapView. If someone has an explanation let me know :)

更新：
使用GestureDetector带来一些弊端我的previously建议的解决方案。所以，我更新了博客文章在我的网站。

UPDATE:
My previously suggested solution using a GestureDetector posed some drawbacks. So I updated the blog post on my site.

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