安卓:合并,标签不工作的碎片 [英] Android: Merge-Tag doesn't work with fragments
问题描述
我在用碎片初学者。是否有可能有这样的布局:
I'm a beginner in using fragments. Is it possible to have a layout like this:
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<include layout="@layout/waiting_dialog"/>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/my_layout"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="@drawable/bg_tile"
android:gravity="center_horizontal"
android:orientation="vertical"
android:visibility="invisible">
<include layout="@layout/no_entries"/>
</LinearLayout>
</merge>
和使用中的片段onCreateView是这样的:
and use it in the fragments' onCreateView like this:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, final Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.main, container, false);
return view;
}
总是有以下错误:
There's always the following error:
07-11 09:53:47.608: E/AndroidRuntime(5602): android.view.InflateException: \
<merge /> can be used only with a valid ViewGroup root and attachToRoot=true
如何处理这个问题呢?
How to handle this problem?
推荐答案
显然是说这里这是不可能的。
Apparently as stated here it is not possible.
我所做的是完全放弃了根布局(见 battery_details.xml
)。所以,我为我MonitorActivity创建一个片段布局:
What I did was altogether drop the "root layout" (see battery_details.xml
). So I create a fragment layout for my MonitorActivity :
public class MonitorActivity extends FragmentActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_monitor);
}
}
在布局是:
<!-- activity_monitor.xml -->
<LinearLayout 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"
android:baselineAligned="false"
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=".MonitorActivity" >
<fragment android:name="di.k23b.hw3.fragments.MonitorDetailsFragment"
android:id="@+id/monitor_details"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
<fragment android:name="di.k23b.hw3.fragments.MonitorPrefsFragment"
android:id="@+id/monitor_preferences"
android:layout_weight="2"
android:layout_width="0dp"
android:layout_height="match_parent" />
</LinearLayout>
在MonitorDetailsFragment类:
and in MonitorDetailsFragment class :
public class MonitorDetailsFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.battery_details, container, false); // NEVER TRUE !
}
}
其中 battery_details.xml
(在 RES /布局
创建):
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/batteryTextHealth"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:ems="10"
android:text="BATTERRRYYY"
android:textIsSelectable="true" >
</TextView>
作品。因此,也许您可以编辑您使用片段布局,添加&LT;的LinearLayout&GT;
那里,只是把&LT元素;的LinearLayout&GT;
直接进入您在使用布局 OnCreateView
- 下跌合并标记
Works. So maybe you can edit the layout you use the fragments, add the <LinearLayout>
there and just put the elements of the <LinearLayout>
directly into the layout you use in the OnCreateView
- dropping the merge tags
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