Java 使用基本片段的视图/布局
我有一个带有FrameLayout的基本片段,我想在派生片段中使用此布局,并向其添加一个onTouchListener BaseFragment.javaJava 使用基本片段的视图/布局,java,android,inheritance,android-fragments,Java,Android,Inheritance,Android Fragments,我有一个带有FrameLayout的基本片段,我想在派生片段中使用此布局,并向其添加一个onTouchListener BaseFragment.java public class BaseFragment extends Fragment { protected FrameLayout baseFrameLayout; protected View baseView; @Override public View onCreateView(LayoutInfl
public class BaseFragment extends Fragment {
protected FrameLayout baseFrameLayout;
protected View baseView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
baseView = inflater.inflate(R.layout.fragment_base, container, false);
baseFrameLayout = (FrameLayout) baseView.findViewById(R.id.frameLayout);
return baseView;
}
}
public class DerivedFragment extends BaseFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
baseFrameLayout.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
// do something
return true;
}
});
return baseView;
}
}
public class OverViewFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view = inflater.inflate(R.layout.fragment_overView, container, false);
Fragment derivedFragment = new DerivedFragment();
FragmentTransaction devTrans = getChildFragmentManager().beginTransaction();
devTrans.add(R.id.derivedFragmentId, derivedFragment).commit();
Fragment footerFragment = new FooterFragment();
FragmentTransaction statTrans = getChildFragmentManager().beginTransaction();
statTrans.add(R.id.footerFragmentId, footerFragment).commit();
return view;
}
}
fragment_base.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/frameLayout"
android:clickable="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/derivedFragmentId"
android:layout_above="@+id/footerFragmentId"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:gravity="center"
/>
<FrameLayout
android:id="@+id/footerFragmentId"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</RelativeLayout>
不幸的是,当我触摸FrameLayout时,onTouchListener没有执行
编辑: 最后,我以这种方式将DerivedFragment添加到另一个片段中: OverViewFragment.java
public class BaseFragment extends Fragment {
protected FrameLayout baseFrameLayout;
protected View baseView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
baseView = inflater.inflate(R.layout.fragment_base, container, false);
baseFrameLayout = (FrameLayout) baseView.findViewById(R.id.frameLayout);
return baseView;
}
}
public class DerivedFragment extends BaseFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
baseFrameLayout.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
// do something
return true;
}
});
return baseView;
}
}
public class OverViewFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view = inflater.inflate(R.layout.fragment_overView, container, false);
Fragment derivedFragment = new DerivedFragment();
FragmentTransaction devTrans = getChildFragmentManager().beginTransaction();
devTrans.add(R.id.derivedFragmentId, derivedFragment).commit();
Fragment footerFragment = new FooterFragment();
FragmentTransaction statTrans = getChildFragmentManager().beginTransaction();
statTrans.add(R.id.footerFragmentId, footerFragment).commit();
return view;
}
}
fragment\u overView.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/frameLayout"
android:clickable="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/derivedFragmentId"
android:layout_above="@+id/footerFragmentId"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:gravity="center"
/>
<FrameLayout
android:id="@+id/footerFragmentId"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</RelativeLayout>
我以前从未使用过空布局。所以我只是测试了一下 使用以下行时,布局不可见,也不会单击:
<FrameLayout
android:id="@+id/frameLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
以下几行可以工作:
<FrameLayout
android:id="@+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
因此,要么让布局
与父视图匹配,要么在内部添加视图 @OberLansch无效,但我已将其添加到我的问题中:(FrameLayout上方是否有其他视图?@OberLansch我已编辑我的问题,我不知道……抱歉。只是一些提示:android:layout_over=“@+id/footerFragment”没有引用此版面中的其他id。我想它应该是footerFragmentId?而且框架版面是包装内容,里面没有任何内容。您确定它们可见并被单击吗?我稍后会测试它,谢谢