android 选项卡跳转问题

额，你贴下logcat日志呗，，，

好的，非常感谢你
try {
String uName=staticContent.uName;//获取用户名
//设置标题
TextView tvtitle=(TextView)findViewById(R.id.title);
tvtitle.setText("工单处理");
//设置显示用户名
TextView tvuname=(TextView)findViewById(R.id.txtUname);
tvuname.setText(uName);

group = (RadioGroup)findViewById(R.id.main_radio);

tabHost = getTabHost();
tabHost.addTab(tabHost.newTabSpec(TAB_HOME)
                .setIndicator(TAB_HOME)
                .setContent(new Intent(this,Gddaichuli.class)));  //.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)这句是选项卡切换刷新
        tabHost.addTab(tabHost.newTabSpec(TAB_MES)
                .setIndicator(TAB_MES)
                .setContent(new Intent(this,MainActivity.class)));
        tabHost.addTab(tabHost.newTabSpec(TAB_TOUCH)
     .setIndicator(TAB_TOUCH)
     .setContent(new Intent(this,Gdhuidan.class)));
        group.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId) {
case R.id.radio_button0:
tabHost.setCurrentTabByTag(TAB_HOME);
break;
case R.id.radio_button1:
tabHost.setCurrentTabByTag(TAB_MES);
break;
case R.id.radio_button2:
tabHost.setCurrentTabByTag(TAB_TOUCH);
break;
default:
break;
}
}
});
} catch (Exception e) {
// TODO: handle exception
String error=e.toString();
Dialog alertDialog = new AlertDialog.Builder(this).
                setTitle("1").
                setMessage(error).
                setIcon(R.drawable.nt2).
                create();
        alertDialog.show();
}
}  Gddaichuli.java页面代码
try {

Uname=staticContent.LoginName;
//启动数据加载动画
showRoundProcessDialog(R.layout.loaddata);
newthread=new Thread(daichuli);
newthread.start();
} catch (Exception e) {
// TODO: handle exception
String error=e.toString();
Dialog alertDialog = new AlertDialog.Builder(this).
                setTitle("对话框的标题").
                setMessage(error).
                setIcon(R.drawable.nt2).
                create();
        alertDialog.show();
}
}
final Handler h=new Handler(){
@Override
        public void handleMessage(Message msg){
            super.handleMessage(msg);
            if(msg.what==0)
            {
             mDialog.dismiss();//关闭数据加载动画
             Toast.makeText(getApplicationContext(),"没有数据",Toast.LENGTH_LONG).show();
            }
            if(msg.what==1)
            {
             ArrayList result=new ArrayList();
             result=(ArrayList) msg.obj;
             //绑定Layout里面的ListView
                final ListView list = (ListView) findViewById(R.id.lvdaichuli);
                //生成动态数组，加入数据
                List<HashMap<String,Object>> listItem=new ArrayList<HashMap<String,Object>>();
                int temp=0;
                int No=1;
                for(int i=0;i<(result.size()/3);i++)
                {
                 HashMap<String,Object> map=new HashMap<String,Object>();
                 map.put("NO",No);
                 map.put("ADSL",result.get(temp));
                 map.put("comName",result.get(temp+2));
                 listItem.add(map);
                 temp+=3;
                 No++;
                }
                //生成适配器的Item和动态数组对应的元素
                SimpleAdapter listItemAdapter = new SimpleAdapter(Gddaichuli.this,listItem,R.layout.lvdaichuli,new String[] {"NO","ADSL","comName"},new int[] {R.id.txtNO,R.id.textView2,R.id.textView1});
                 //添加并且显示
                list.setAdapter(listItemAdapter);
                mDialog.dismiss();//关闭数据加载动画
            }
}
};

Runnable daichuli=new Runnable() {
public void run() {
getUrl u=new getUrl();
ArrayList result=new ArrayList();
result=u.daichuli(Uname);
Message m=new Message();
if(!(result.equals(null)))
{
m.what=1;
m.obj=result;
}
else {
m.what=0;
}
h.sendMessage(m);
}
}; public void showRoundProcessDialog(int layout)
    {
        OnKeyListener keyListener = new OnKeyListener()
        { @Override
public boolean onKey(DialogInterface dialog, int keyCode,
KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_HOME || keyCode == KeyEvent.KEYCODE_SEARCH)
                {
                    return true;
                }
                return false;
}
        };        mDialog = new AlertDialog.Builder(this).create();
        mDialog.setCanceledOnTouchOutside(false);
        mDialog.setOnKeyListener(keyListener);
        mDialog.show();
        // 注意此处要放在show之后否则会报异常
        mDialog.setContentView(layout);
    }
}

第一段代码就可以了，我测试了，首先注意两个地方，tabHost.addTab(tabHost.newTabSpec(TAB_HOME)
.setIndicator(TAB_HOME)
.setContent(new Intent(this,Gddaichuli.class)));这里new Intent后面的this有点泛指，可能造成指针不对，我改成了activity名.this，然后tabHost.setCurrentTabByTag(TAB_HOME);改成了tabHost.setCurrentTag()里面的参数是int，0,1,2，自己选择第几个画面，运行没报错，，，

我试了一下还是不行，改成
tabHost.addTab(tabHost.newTabSpec(TAB_HOME)
.setIndicator(TAB_HOME)
.setContent(new Intent(Gdhuidan.this,Gddaichuli.class))); 这样了
还有这句tabHost.setCurrentTag(0);会报错:The method setCurrentTag(int) is undefined for the type TabHost

你的activity没有extends TabActivity吗？怎么会说这个方面没有了

有继承TabActivity 方便加你QQ聊吗？

activity是继承TabTabActivity，所以你一直用tabhost报错了，，，

我试了一下把那句.setContent(new Intent(Gdhuidan.this,Gddaichuli.class))); 改成.setContent(new Intent(this,MainActivity.class)));在那选项卡中跳转到MainActivity.class这里是正常的，只是跳转到Gddaichuli.class这个页面才出错，但是在其他非选项卡页面直接跳转到Gddaichuli.class也是正常的

调试易

android 选项卡跳转问题

解决方案 »