将Google Map片段嵌套在自定义片段中

时间:2013-12-14 12:38:09

标签: android google-maps android-fragments

我正在尝试使用片段创建滑动视图。其中一个片段应该包装GoogleMap MapFragment.Inflating MapFragment直接在main活动中正常工作。但是通过FragmentPagerAdapter执行会抛出Choreographer.class中找不到的源。我不能这样做找到它为什么会发生的线索。我根据this回答设置了所有内容。所以我的代码看起来像这样:

MainActivity

public class MainActivity extends FragmentActivity {

FragPagerAdapter _fragPagerAdapter;
ViewPager _viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_layout);

    _fragPagerAdapter = new FragPagerAdapter(getFragmentManager());
    _viewPager = (ViewPager)findViewById(R.id.pager);
    _viewPager.setAdapter(_fragPagerAdapter);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);

    return true;
}

public class FragPagerAdapter extends  FragmentPagerAdapter {

    public FragPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {

        Fragment fragment = null;

        if(position == 1){
        fragment = new LocMapFragment(); //CRASHES 
        }else{
            //Doesn't contain map .WORKS
            fragment = new DummySectionFragment();
            Bundle args = new Bundle();
            args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
            fragment.setArguments(args);
        }

        return fragment;
    }

    @Override
    public int getCount() {
        // Show 3 total pages.
        return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        Locale l = Locale.getDefault();
        switch (position) {
        case 0:

            return getString(R.string.title_section1).toUpperCase(l);
        case 1:
            return getString(R.string.title_section2).toUpperCase(l);
        case 2:
            return getString(R.string.title_section3).toUpperCase(l);
        }
        return null;
    }
}


}

LocMapFragment

public class LocMapFragment extends Fragment {

private GoogleMap  _map;
@Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState){

  View v = inflater.inflate(R.layout.map_layout, null, false);

  _map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
      .getMap();

  return v;
   }
}

map_layout布局

<?xml version="1.0" encoding="utf-8"?>
  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >

    <fragment
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.SupportMapFragment" />

 </RelativeLayout>

我正在使用来自Android API的片段,而不是来自支持V4.我试图将片段布局更改为class =&#34; com.google.android.gms.maps.SupportMapFragment&#34;并且仍然是一样的。

更新

好吧,不知怎的,它现​​在开始工作了。但是现在发生的事情是,如果地图片段在第一个滑动片段中,然后我还有两个只有文本的滑动。如果我从地图滚动到另一个,然后向后滚动,我在Choreographer.class上得到例外。

This answer seem to have solved the issue.

1 个答案:

答案 0 :(得分:1)

看看这个实现,您应该像以前一样,创建一个包含地图的片段:

public class MapFragment extends Fragment

创建一个布局: 的 mapview.xml:

<?xml version="1.0" encoding="utf-8"?>

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:id="@+id/mapview"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
map:cameraZoom="12"
map:mapType="normal"
map:uiZoomControls="false"
map:uiRotateGestures="true"
map:uiScrollGestures="true"
map:uiZoomGestures="true"
map:uiTiltGestures="false" />

然后在片段中执行此操作:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    return inflater.inflate(R.layout.mapview, container, false);
}

然后获取地图实例:

private GoogleMap getGoogleMap() {
        if (map == null && getActivity() != null && getActivity().getSupportFragmentManager()!= null) {
            SupportMapFragment smf = (SupportMapFragment)getActivity().getSupportFragmentManager().findFragmentById(R.id.mapview);
            if (smf != null) {
                map = smf.getMap();
            }
        }
        return map;
    }