android studio 继承TabActivity后 选项卡中的imagView显示不出来

public class MainActivity extends AppCompatActivity {

    private TabHost mTabHost;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mTabHost=(TabHost)findViewById(android.R.id.tabhost);
        mTabHost.setup();

//        addTab("zhuye",R.layout.zhuye, Activity_zhuye.class);
//        addTab("tianjia",R.layout.zhuye, Activity_tianjia.class);
//        addTab("wode",R.layout.wode, Activity_wode.class);

        addTab("zhuye",R.layout.zhuye);
        addTab("tianjia",R.layout.tianjia);
        addTab("wode",R.layout.wode);

        mTabHost.setCurrentTab(0);
    }
//  private void addTab(String label, int drawableId, Class act) {
//        TabHost.TabSpec spec = mTabHost.newTabSpec(label);
//        View tabIndicator = getLayoutInflater().inflate(drawableId, null);
//        spec.setIndicator(tabIndicator);
//
//        Intent intent = new Intent(getApplicationContext(),act);
//        spec.setContent(intent);
//        mTabHost.addTab(spec);
//  }
    private void addTab(String label, int drawableId) {
        TabHost.TabSpec spec = mTabHost.newTabSpec(label);
        View tabIndicator = getLayoutInflater().inflate(drawableId, null);
        spec.setIndicator(tabIndicator);

        spec.setContent(R.id.content);
        mTabHost.addTab(spec);
    }
}

继承TabActivity后显示不出来  这个是原图