选显卡加载xml问题？

 TabHost.TabSpec spec = tabs.newTabSpec("rycxtab");
        spec.setContent(R.id.rycxtab);
        spec.setIndicator("测试1",getResources().getDrawable(R.layout.infosearch_stress));
        tabs.addTab(spec);
        
        spec = tabs.newTabSpec("wpcxtab");
        spec.setContent(R.id.wpcxtab);
        spec.setIndicator("测试2",getResources().getDrawable(R.layout.infosearch_query_aticle));
        tabs.addTab(spec);
        
        spec = tabs.newTabSpec("ajcxtab");         spec.setContent(R.id.ajcxtab);
        spec.setIndicator("测试3",getResources().getDrawable(R.layout.infosearch_law_case));
        tabs.addTab(spec);
        
        spec = tabs.newTabSpec("jgcxtab");
        spec.setContent(R.id.jgcxtab);
        spec.setIndicator("测试4",getResources().getDrawable(R.layout.infosearch_institution));
        tabs.addTab(spec); 
        
        tabs.setCurrentTab(0);