Android 使用选项卡滑动视图向选项卡片段添加额外的片段
Android Swipe View with Tabs adding additional fragments to tab fragments
我可以流畅地使用它,这正是我所需要的:
http://developer.android.com/training/implementing-navigation/lateral.html
我的设置基本相同;带有两个嵌套选项卡(片段)的 activity,如下所示:
public class StopActivity extends Activity
{
...
public static class EnRouteFragment extends Fragment
{
...
}
public static class OnSiteFragment extends Fragment
{
...
}
}
但是,现在我想在其中的 tab/view 片段中添加一些可重复使用的 UI 片段。我对 Android 比较陌生,但在将片段添加到普通视图时没有遇到任何问题,否则。除了上面的设置之外,我还创建了一个简单的片段:
public class DetailsFragment extends Fragment
{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
final View view = inflater.inflate(R.layout.fragment_details, container, false);
return super.onCreateView(inflater, container, savedInstanceState);
}
}
相当基本的布局:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<TextView
android:id="@+id/tripText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Trip"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Spinner
android:id="@+id/tripSpinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
<Space android:layout_width="20dp" android:layout_height="match_parent" />
<TextView
android:id="@+id/stopNoText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Stop #"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Spinner
android:id="@+id/stopNoSpinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</RelativeLayout>
...并将其添加到第一个tab/fragment(对应上面"EnRouteFragment"的布局):
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.me.mobile.StopActivity$PlaceholderFragment" >
<fragment android:name="com.me.mobile.fragment.DetailsFragment"
android:id="@+id/detailsFragment"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
</RelativeLayout>
我得到以下异常:
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.me.mobile/com.me.mobile.StopActivity}:
android.view.InflateException: Binary XML file line #8: Error
inflating class fragment
...
Caused by: java.lang.IllegalStateException: Fragment
com.me.mobile.fragment.DetailsFragment did not create a view. at
android.app.Activity.onCreateView(Activity.java:4809) at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
任何线索将不胜感激!
如果您 return 超类视图,为什么要在 DetailsFragment
中膨胀您的视图?这没有任何意义。你应该做以下事情
public class DetailsFragment extends Fragment
{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
final View view = inflater.inflate(R.layout.fragment_details, container, false);
return view;
}
}
我可以流畅地使用它,这正是我所需要的:
http://developer.android.com/training/implementing-navigation/lateral.html
我的设置基本相同;带有两个嵌套选项卡(片段)的 activity,如下所示:
public class StopActivity extends Activity
{
...
public static class EnRouteFragment extends Fragment
{
...
}
public static class OnSiteFragment extends Fragment
{
...
}
}
但是,现在我想在其中的 tab/view 片段中添加一些可重复使用的 UI 片段。我对 Android 比较陌生,但在将片段添加到普通视图时没有遇到任何问题,否则。除了上面的设置之外,我还创建了一个简单的片段:
public class DetailsFragment extends Fragment
{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
final View view = inflater.inflate(R.layout.fragment_details, container, false);
return super.onCreateView(inflater, container, savedInstanceState);
}
}
相当基本的布局:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<TextView
android:id="@+id/tripText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Trip"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Spinner
android:id="@+id/tripSpinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
<Space android:layout_width="20dp" android:layout_height="match_parent" />
<TextView
android:id="@+id/stopNoText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Stop #"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Spinner
android:id="@+id/stopNoSpinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</RelativeLayout>
...并将其添加到第一个tab/fragment(对应上面"EnRouteFragment"的布局):
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.me.mobile.StopActivity$PlaceholderFragment" >
<fragment android:name="com.me.mobile.fragment.DetailsFragment"
android:id="@+id/detailsFragment"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
</RelativeLayout>
我得到以下异常:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.me.mobile/com.me.mobile.StopActivity}: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
...
Caused by: java.lang.IllegalStateException: Fragment com.me.mobile.fragment.DetailsFragment did not create a view. at android.app.Activity.onCreateView(Activity.java:4809) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
任何线索将不胜感激!
如果您 return 超类视图,为什么要在 DetailsFragment
中膨胀您的视图?这没有任何意义。你应该做以下事情
public class DetailsFragment extends Fragment
{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
final View view = inflater.inflate(R.layout.fragment_details, container, false);
return view;
}
}