我有一个自定义选项卡，我在后台运行一个服务，在1分钟后点击一个Web服务并从web获取一些数据。现在我希望在收到数据时第一个选项卡图像被更改。 请帮忙。谢谢。
我的代码
public class MainTabActivity extends TabActivity {
public static TabHost mTabHost;
public static TextView offLineText;
private void setupTabHost() {
mTabHost = (TabHost) findViewById(android.R.id.tabhost);
mTabHost.setup();
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.tab_test);
offLineText=(TextView)findViewById(R.id.offlinetext);
setupTabHost();
mTabHost.getTabWidget().setDividerDrawable(R.drawable.tab_divider);
setupTab(new TextView(this), "New Order!","NewOrderActivity.class",R.drawable.neworder);
setupTab(new TextView(this), "Viewed Orders","ViewedOrderActivity.class",R.drawable.viewd);
setupTab(new TextView(this), "Settings", "SettingActivity.class",R.drawable.setting);
setupTab(new TextView(this), "Dashboard","DashboardActivity.class",R.drawable.view);
}
private void setupTab(final View view, final String tag, final String className, int neworder) {
View tabview = createTabView(mTabHost.getContext(), tag, mTabHost.getContext().getResources().getDrawable(neworder));
Intent intent;
intent = new Intent().setClass(this, NewOrderActivity.class);
if (className.equals("NewOrderActivity.class")) {
intent = new Intent().setClass(this, NewOrderActivity.class);}
if (className.equals("ViewedOrderActivity.class")) {
intent = new Intent().setClass(this, ViewedOrderActivity.class);}
if (className.equals("SettingActivity.class")) {
intent = new Intent().setClass(this, SettingActivity.class);}
if (className.equals("DashboardActivity.class")) {
intent = new Intent().setClass(this, DashboardActivity.class);
}
TabSpec setContent = mTabHost.newTabSpec(tag).setIndicator(tabview).setContent(intent); {
};
mTabHost.addTab(setContent);
}
private static View createTabView(final Context context, final String text,final Drawable drawable) {
View view = LayoutInflater.from(context).inflate(R.layout.tabs_bg, null);
TextView tv = (TextView) view.findViewById(R.id.tabsText);
tv.setText(text);
ImageView imageview=(ImageView) view.findViewById(R.id.imgTab);
imageview.setImageDrawable(drawable);
return view;
}
}