我正在尝试在Android中创建应用,并且我想在导航抽屉中添加地图。抽屉选项打开新片段但无法使Map片段起作用。
MainActivity.java 按以下方式设置片段:
/**
* Diplaying fragment view for selected nav drawer list item
* */
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
switch (position) {
case 0:
fragment = new HomeFragment();
break;
case 1:
fragment = new PoliFragment();
break;
case 2:
fragment = new TilefonaFragment();
break;
case 3:
fragment = new DromologiaFragment();
break;
case 4:
fragment = new XartisFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
//setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
地图片段( XartisFragment.java )如下:
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
public class XartisFragment extends Fragment {
private GoogleMap map;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.map_layout,container, false);
map = ((SupportMapFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.map)).getMap();//((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map)).getMap();
return rootView;
}
}
map_layout.xml 如下:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="8dp" />
</RelativeLayout>
当我尝试运行它时,我得到:
Error:(178, 15) error: incompatible types: XartisFragment cannot be converted to Fragment
它将错误指向MainActivity.java中的这一行
fragment = new XartisFragment();
关于要加载什么以改变它的任何想法?
答案 0 :(得分:1)
尝试使用getSupportFragmentManager()
代替getFragmentManager()
。
或
确保两个地方都导入相同的Fragment类。感觉有点像在一个地方你导入android.app.Fragment(本机API Level 11版本的片段),在其他地方你导入android.support.v4.app.Fragment(来自Android支持的片段)封装)。