How to change android tab text on the fly?
Solution 1
Wow. Okay this was a pain. Apparently TabWidget does something funky with RelativeLayout and everytime I tried to do anything with radek-k's solution it was blowing up with a RelativeLayout error. So basically the work around is the following. It also allows you to change the font, font size, font color, etc.
TabWidget vTabs = getTabWidget();
RelativeLayout rLayout = (RelativeLayout) vTabs.getChildAt(tabIndex);
((TextView) rLayout.getChildAt(textIndex)).setText("NewTabText");
or in one line...
((TextView)((RelativeLayout)getTabWidget().getChildAt(tabIndex)).getChildAt(textIndex)).setText("NewTabText");
where "textIndex" is the index of the text field. In this case it is 1. If the tab has an icon or custom modifications the index could change.
Thanks again to radek-k. You definitely got me pointed in the right direction.
Solution 2
try this easiest way which works for me :
tabLayout.getTabAt(index).setText("TabName");
Solution 3
You can do it without knowing the magic index of the TextView
by using findViewById
:
TabWidget vTabs = getTabWidget();
View indicatorView = vTabs.getChildAt(tabIndex);
((TextView) indicatorView.findViewById(android.R.id.title)).setText("NewTabText");
Solution 4
Here is your layout:
<com.google.android.material.tabs.TabLayout
android:id="@+id/ref_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.tabs.TabItem
android:id="@+id/ref_book"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<com.google.android.material.tabs.TabItem
android:id="@+id/ref_chpter"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<com.google.android.material.tabs.TabItem
android:id="@+id/ref_verse"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</com.google.android.material.tabs.TabLayout>
Here is your code:
TabLayout tabLayout = findViewById(R.id.ref_tabs);
tabLayout.getTabAt(0).setText("BOOK"));
tabLayout.getTabAt(1).setText("CHAPTER"));
tabLayout.getTabAt(2).setText("VERSE"));
Solution 5
TabWidget vTabs = .....;
// get desired tab view
View vTab = vTabs.getChildAt(i);
// I guess vTab is instance of TextView
TextView vText = (TextView) vTab;
vText.setText(...);
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Honeal
Updated on April 02, 2020Comments
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Honeal about 4 years
This seems like it should be simple, but I can't figure out a way to do it. I'm needing a tab to have beginning text, but then have that text change after the user selects an item from a list. I know how to change tab backgrounds and colors via
mTabHost.getChildAt(index).setBackgroundColor();
but there isn't an option to change the tab's indicator. I've tried using an EditText.
private EditText tabName; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.statistics); comm = new Communicator(); tabName = new EditText(this); tabName.setText("BeginningText"); mTabHost = getTabHost(); mTabHost.addTab(mTabHost .newTabSpec("tab_1_stat") .setIndicator(User) .setContent(R.id.meStatsTab)); mTabHost.addTab(mTabHost .newTabSpec("tab_2_stat") .setIndicator(tabName.getText()) .setContent(R.id.themStatsTab)); mTabHost.addTab(mTabHost .newTabSpec("tab_3_stat") .setIndicator("Archive") .setContent(R.id.archiveStatsTab)); mTabHost.setOnTabChangedListener(this); getTabWidget().getChildAt(1).setOnClickListener(new onThemTabClicked()); mTabHost.setCurrentTab(0); onTabChanged("tab_1_stat");
}
.....
@Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { super.onActivityResult(requestCode, resultCode, intent); tabName.setText("ChangedTabText"); Bundle extras = intent.getExtras(); themStats = extras.getStringArray("themStats"); mTabHost.setCurrentTab(1); onTabChanged("tab_2_stat"); }
That didn't work either, along with a few other attempts. Any ideas? Thanks ahead of time!
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Honeal over 13 yearsI was able to play with that a little last night, but it's still blowing up on me. Have you got that to work? I'm going to experiment with it a little more today, but if you have a little more insight that'd be great. Thanks again.
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Dheeraj Vepakomma almost 12 yearsIf you're using the standard
TabActivity
, you can usefindViewById(android.R.id.title)
in place ofgetChildAt(textIndex)
as in this answer.