android - 错误：“在添加内容之前必须调用 requestFeature”

Question

此代码给我错误：“在添加内容之前必须调用 requestFeature()”。现在我尝试在“setContent”之前和“setContent”之后调用 requestFeature 仍然出错。任何猜测：

public class Support extends TabActivity {

private ImageView mSpinnerImage = null;
private Animation mAnimation = null;
private Button button = null;
private TextView synctitle = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);

        /*Titlebar + Button*/
        setContentView(R.layout.support);
        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.window_title);
        button  = (Button) findViewById(R.id.syncbutton);
        mSpinnerImage = (ImageView) findViewById(R.id.spinner_view);
        mAnimation = AnimationUtils.loadAnimation(this, R.anim.rotate_animation);
        synctitle  = (TextView) findViewById(R.id.synctitele);
        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                button.setVisibility(View.INVISIBLE);
                 mSpinnerImage.setVisibility(View.VISIBLE);
                 synctitle.setVisibility(View.VISIBLE);
                 mSpinnerImage.setAnimation(mAnimation);
                 mSpinnerImage.startAnimation(mAnimation);
            }
        });
        /*Titlebar + Button ends*/

        /*Tabs*/
        Bundle bundle = getIntent().getExtras();
        TabHost tabHost = getTabHost();
        TabHost.TabSpec spec;
        Intent intent;

        intent = new Intent().setClass(this, TestListView.class);
        spec = tabHost  .newTabSpec("some_things")
                        .setIndicator("Info")
                        .setContent(intent);
        tabHost.addTab(spec);

        intent = new Intent().setClass(this, TestListView.class);
        spec = tabHost  .newTabSpec("top_things")
                        .setIndicator("Log")
                        .setContent(intent);
        tabHost.addTab(spec);


        tabHost.getTabWidget().getChildAt(0).getLayoutParams().height = 85;
        tabHost.getTabWidget().getChildAt(1).getLayoutParams().height = 85;
        /*Tabs ends*/
}

}