Google Maps Android API v2 - 检测地图上的触摸 [英] Google Maps Android API v2 - detect touch on map

问题描述

我找不到有关如何在新的 Google Maps API v2 上拦截地图触摸的示例.

I can't find an example on how to intercept the map touch on the new Google Maps API v2.

我需要知道用户何时触摸地图以停止线程(以我当前位置为中心的地图).

I need to know when the user touches the map in order to stop a thread (the centering of the map around my current location).

推荐答案

@ape 在这里写了一个关于如何拦截地图点击的答案，但我需要拦截触摸，然后他在评论中建议了以下链接它的答案，如何处理 onTouch 事件用于 Google Map API v2 中的地图?.

@ape wrote an answer here on how to intercept the map clicks, but I need to intercept the touches, and then he suggested the following link in a comment of its answer, How to handle onTouch event for map in Google Map API v2?.

该解决方案似乎是一种可能的解决方法，但建议的代码不完整.为此，我重新编写并测试了它，现在它可以工作了.

That solution seems to be a possible workaround, but the suggested code was incomplete. For this reason I rewrote and tested it, and now it works.

这是工作代码:

我创建了类 MySupportMapFragment.java

I created the class MySupportMapFragment.java

import com.google.android.gms.maps.SupportMapFragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class MySupportMapFragment extends SupportMapFragment {
    public View mOriginalContentView;
    public TouchableWrapper mTouchView;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {
        mOriginalContentView = super.onCreateView(inflater, parent, savedInstanceState);
        mTouchView = new TouchableWrapper(getActivity());
        mTouchView.addView(mOriginalContentView);
        return mTouchView;
    }

    @Override
    public View getView() {
        return mOriginalContentView;
    }
}

我什至创建了类 TouchableWrapper.java:

I even created the class TouchableWrapper.java:

import android.content.Context;
import android.view.MotionEvent;
import android.widget.FrameLayout;

public class TouchableWrapper extends FrameLayout {

    public TouchableWrapper(Context context) {
        super(context);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {

        switch (event.getAction()) {

            case MotionEvent.ACTION_DOWN:
                  MainActivity.mMapIsTouched = true;
                  break;

            case MotionEvent.ACTION_UP:
                  MainActivity.mMapIsTouched = false;
                  break;
        }
        return super.dispatchTouchEvent(event);
    }
}

在布局中我这样声明:

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
          android:id="@+id/mapFragment"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_alignParentBottom="true"
          android:layout_below="@+id/buttonBar"
          class="com.myFactory.myApp.MySupportMapFragment"
/>

为了在主 Activity 中进行测试，我只写了以下内容:

Just for test in the main Activity I wrote only the following:

public class MainActivity extends FragmentActivity {
    public static boolean mMapIsTouched = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

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