如何在选项卡式布局中显示gridview
问题描述:
嗨我正在设置一个android应用程序,并使用了选项卡式界面。我想要两个选项卡,一个基于文本的选项卡(歌曲),一个Gridview教程中的图像的GridView选项卡。如何在选项卡式布局中显示gridview
以标签界面tutrial为例,我在主类的onCreate()事件中声明了标签的内容。
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources(); // Resource object to get Drawables
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec; // Resusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, GalleryActivity.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("artists").setIndicator("Artists",
res.getDrawable(R.drawable.ic_tab_artists))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this,songs.class);
spec = tabHost.newTabSpec("songs").setIndicator("Songs", res.getDrawable(R.drawable.ic_tab_artists))
.setContent(intent);
tabHost.addTab(spec);
}
而且我的画廊活动
public class GalleryActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
GridView gridview = new GridView(this);
gridview.setAdapter(new ImageAdapter(this));
setContentView(R.layout.grid);
}
}
}
}
我的XML文件
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:padding="5dp" />
</LinearLayout>
</TabHost>
我的适配器类是
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
// TODO Auto-generated constructor stub
mContext= c;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return mThumbIds.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView imageView;
if (convertView == null) { // if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
//myButton.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT, Gravity.CENTER_HORIZONTAL));
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
// references to our images
private Integer[] mThumbIds = {
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7,
R.drawable.sample_0, R.drawable.sample_1,
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7,
R.drawable.sample_0, R.drawable.sample_1,
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7
};
}
这样做,当我编译和运行程序我没有得到的网格布局
输出后,无法正常formated.I认为通过添加网格视图XML属性适配器类可以修复错误。但我不知道如何使用在Java UI属性属性是
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
任何一个可以帮助我
答
而不是使用的setContentView(GridView控件)的;在GalleryAcitvity使用一个单独的XML文件(比如grid.xml),并在其写入以下代码:
<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
/>
然后在GalleryActivity使用
setContentView(R.layout.grid);
在onCreate方法的开始。 试试这个。
did not work for me.I getting getting black screen only in galleryActivity – Anish 2011-04-20 10:07:48
你可以编辑上面发布的代码让我知道你做了什么,因为它应该工作。 – 2011-04-20 10:10:33
我做了你所说的。我创建了新的xml文件并在我的GalleryActivity类中添加了setContentView(R.layout.grid)。我编辑了上述代码 – Anish 2011-04-20 10:14:54