Android控制TabHost布局通过代码

Question

我通过代码设置了TabHost，没有使用布局XML。如何控制Tab显示在底部而不是顶部。通常通过XML由android:layout_alignParentBottom="true".

 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    //setContentView(R.layout.main);
 TabHost host=getTabHost();

    host.addTab(host.newTabSpec("Offers")
            .setIndicator("Offers", getResources().getDrawable(R.drawable.icon_light))
            .setContent(new Intent(this, Offer_Popup.class)));
    host.addTab(host.newTabSpec("Account")
            .setIndicator("Account", getResources().getDrawable(R.drawable.icon_wrench))
            .setContent(new Intent(this, Offer_Popup.class)));
    host.addTab(host.newTabSpec("Settings")
            .setIndicator("Settings", getResources().getDrawable(R.drawable.icon_user))
            .setContent(new Intent(this, Offer_Popup.class)));
    host.addTab(host.newTabSpec("Awards")
            .setIndicator("Awards", getResources().getDrawable(R.drawable.icon_list))
            .setContent(new Intent(this, List_Items.class)));
}

}

Answer 1

我猜你是使用相对布局(因为你使用的是android:layout_alignParentBottom="true")。然后我认为你需要创建RelativeLayout布局参数，并将它们应用到TabWidget上，就像这样:

RelativeLayout.LayoutParams rllp = new RelativeLayout.LayoutParams(..., ...);
rllp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
tw.setLayoutParams(rllp); //where tw is your TabWidget

在编程上相当于使用android:layout_alignParentBottom="true"