Android layout not showing properly

Question

I'm writing an android app and in it I want to have a sort of title bar including the name of the game, the score, and things like that. Then below that I want to have an grid of image views, which will kind of be like tiles on which I can display different characters in my game.

I have the following xml layout, but when I run it and I get a black screen:

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/title" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="@string/app_name" /> <TextView android:id="@+id/score" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="@string/score" /> <TextView android:id="@+id/score" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="0" /> <TextView android:id="@+id/robotsLeft" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="@string/robots" /> <TextView android:id="@+id/score" android:layout_width="wrap_content" android:layout_height="fill_parent" android:text="0" /> </LinearLayout> <GridView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/gridview" android:layout_width="fill_parent" android:layout_height="wrap_content" android:columnWidth="90dp" android:numColumns="auto_fit" android:verticalSpacing="10dp" android:horizontalSpacing="10dp" android:stretchMode="columnWidth" android:gravity="center" /> 

GridView is initialized as per this tutorial:

http://developer.android.com/resources/tutorials/views/hello-gridview.html

ie. in my main activity's onCreate():

super.onCreate(savedInstanceState);  
setContentView(R.layout.main);          
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(this));

Can anyone see anything I've done wrong?

Thanks!

Answer 1

Well, that's invalid XML, because there's no root element. Also, all of your TextView widgets have android:layout_height="fill_parent" , which is rather strange. You might also consider using hierarchyviewer to examine your layout more closely and see what else may be going wrong.

Answer 2

您应该在其下放置（线性）布局，因为xml无效。