Dynamic Tab Removal/Deletion in Tabhost
I've searched long and far and found a few different ways people are dealing with removing a single and often specific tab from a TabHost
object. I would like to try, if I may, to gather all those methods to this single question so that people my "shop" for the right method they need and hopefully get the answer they need to write their code; I also feel that it will cut down on the number of these questions.
At the moment I'm having trouble finding a solution to my code as well. I'm attempting to get rid of a particular tab without touching the others; hopefully I too will find my answer.
I wont pick a particular answer for this question for a while, so please just list the method you used to deal with this problem here for others to see.
Thank you.
Update:
Okay, here is my current code:
TabHost mTabHost;
TabHost.TabSpec spec;
Intent mSettingsIntent;
Intent mSearchIntent;
int tabNum = 1;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mSearchIntent = new Intent().setClass(this, SearchTab.class);
mTabHost = getTabHost();
mTabHost.getTabWidget().setDividerDrawable(R.drawable.tab_divider);
makeTab("Tab");
final Button newSearchBtn = (Button) findViewById(R.id.new_search_btn);
newSearchBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// Perform action on clicks
EditText searchBar = (EditText) findViewById(R.id.search_bar);
final String searchString = searchBar.getText().toString();
makeTab(searchString);
}
});
final EditText edittext = (EditText) findViewById(R.id.search_bar);
edittext.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
// If the event is a key-down event on the "enter" button
if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
(keyCode == KeyEvent.KEYCODE_ENTER)) {
// Perform action on key press
EditText searchBar = (EditText) findViewById(R.id.search_bar);
final String searchString = searchBar.getText().toString();
makeTab(searchString);
return true;
}
return false;
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate开发者_如何转开发(R.menu.tab_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.menu_close:
// TODO: Find/define method to close a single tab
closeTab();
return true;
case R.id.menu_settings:
// TODO: Create a basic Settings Activity and call constructor here
return true;
default:
return super.onOptionsItemSelected(item);
}
}
public void makeTab(String tabText) {
String tabTag = "Tab" + tabNum++;
View tabview = createTabView(mTabHost.getContext(), tabText);
spec = mTabHost.newTabSpec(tabTag).setIndicator(tabview).setContent(new Intent().setClass(this, SearchTab.class));
mTabHost.addTab(spec);
mTabHost.setCurrentTabByTag(tabTag);
}
private void closeTab() {
// TODO: Define method for closing a single tab with tabTag
mTabHost.removeViewAt(mTabHost.getCurrentTab());
}
private static View createTabView(final Context context, final String text) {
View view = LayoutInflater.from(context).inflate(R.layout.tabs_bg, null);
TextView tv = (TextView) view.findViewById(R.id.tabsText);
tv.setText(text);
return view;
}
}
My app locks up due to a NullPointer Exception
I'm not sure why; I'm still trying to figure out how to read the debugger perspective in Eclispe for clues. I'll update when I have more.
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