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PO(Android )How can I change the current tab in sub activity?
 

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  1. PO(Android )How can I change the current tab in sub activity?
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    <p>As the title, Im writting an app that has four 4 tabs<br> How can I use tabHost.setCurrentTab(3) in tab(SatrtActivity) to go to tab(3)??<br></p> <p>ex: how to declare tabHost as static?? or some else ways :)</p> <p>Here is my code:</p> <pre><code>public class MainActivity extends TabActivity { public static TabHost tabHost; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Resources res = getResources(); tabHost = getTabHost(); TabHost.TabSpec spec; Intent intent; intent = new Intent().setClass(this, StartActivity.class); spec = tabHost.newTabSpec("tab1").setIndicator("Start",res.getDrawable(R.drawable.start)) .setContent(intent); tabHost.addTab(spec); intent = new Intent().setClass(this, WeatherActivity.class); spec = tabHost.newTabSpec("tab2").setIndicator("Weather",res.getDrawable(R.drawable.weather)) .setContent(intent); tabHost.addTab(spec); intent = new Intent().setClass(this, TrafficActivity.class); spec = tabHost.newTabSpec("tab3").setIndicator("Traffic",res.getDrawable(R.drawable.traffic)) .setContent(intent); tabHost.addTab(spec); intent = new Intent().setClass(this, NewsActivity.class); spec = tabHost.newTabSpec("tab4").setIndicator("News",res.getDrawable(R.drawable.price)) .setContent(intent); tabHost.addTab(spec); tabHost.setCurrentTab(0); } } public class StartActivity extends Activity{ TextView tempNum, cn1, cn2, cn3, ln1, ln2, ln3; final Handler myHandler = new Handler(); @Override public void onCreate( Bundle savedInstanceState ) { super.onCreate( savedInstanceState ); setContentView(R.layout.start); tempNum = (TextView) findViewById(R.id.temp); cn1 = (TextView) findViewById(R.id.zone1News1); cn2 = (TextView) findViewById(R.id.zone1News2); cn3 = (TextView) findViewById(R.id.zone1News3); ln1 = (TextView) findViewById(R.id.zone2News1); ln2 = (TextView) findViewById(R.id.zone2News2); ln3 = (TextView) findViewById(R.id.zone2News3); Timer myTimer = new Timer(); myTimer.schedule(new TimerTask() { @Override public void run() {updateInfo();} }, 20000, 5000); } private void updateInfo() { myHandler.post(myRunnable); } final Runnable myRunnable = new Runnable() { public void run() { try{ URL url = new URL("http://xml.weather.yahoo.com/forecastrss?p=TWXX0025&amp;u=c"); SAXParserFactory spf = SAXParserFactory.newInstance(); SAXParser sp = spf.newSAXParser(); XMLReader xr = sp.getXMLReader(); WeatherHandler weatherHandler = new WeatherHandler(); CentralNewsOneHandler centralNewsOneHandler = new CentralNewsOneHandler(); CentralNewsTwoHandler centralNewsTwoHandler = new CentralNewsTwoHandler(); CentralNewsThreeHandler centralNewsThreeHandler = new CentralNewsThreeHandler(); xr.setContentHandler(weatherHandler); xr.parse(new InputSource(url.openStream())); WeatherParsedDataSet weatherParsedDataSet = weatherHandler.getParsedData(); tempNum.setText(weatherParsedDataSet.toString()); }catch (Exception e) { e.printStackTrace(); } } }; public void setToNewsTab(View view) { tabHost.setCurrentTab(3); //Here is the method that I wanna set to tab(3) } } </code></pre>
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