I am making an android application in which I use two different tabhosts in two different activities, However I am having trouble differentiating between then and my app stops when I enter the activity with the second tabhost.
The code in my first activity is as follows:
private TabHost tHost_;
private TabSpec tSpec_;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mypls_shared);
setTitle("Workout Scheduler");
tHost_ = (TabHost) findViewById(R.id.tabhost);
tHost_.setup();
tSpec_ = tHost_.newTabSpec("tag1");
tSpec_.setContent(R.id.myTab);
tSpec_.setIndicator("My Workouts");
tHost_.addTab(tSpec_);
tSpec_ = tHost_.newTabSpec("tag2");
tSpec_.setContent(R.id.shareTab);
tSpec_.setIndicator("Shared Workouts");
tHost_.addTab(tSpec_);
}
in my xml file the android id of the tabhost is specified as follows:
<TabHost
android:id="#+id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true" >
the code in my second file is as follows:
private TabHost tHost_;
private TabSpec tSpec_;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_three_by3);
setTitle("Workout Scheduler");
tHost_ = (TabHost) findViewById(R.id.tabhost);
tHost_.setup();
}
the xml file looks like this:
<TabHost
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_below="#+id/textView1" >
However when I enter the second activity, the app stops. I know that a tabhost must be named as such:
android:id="#+id/tabhost"
but what do i do if I have 2 tabhosts, which is referred to by R.id.tabhost?
Related
So, i was following the NewBoston series on Android tutorials. So, there is this tutorial on setting up tabs using Tabhost and Tabspecs. Now, i tried exactly what the tutorial does but crashes and it points to a particular line in my code which is setContentView() method in the OnCreate(). I tried even removing it and ran the code but the program just crashes. What could be my mistake? I also tried the code in the following article to see if that works but it still crashes.
http://www.learn-android-easily.com/2013/07/android-tabwidget-example.html
This is my code-
Splash.java is the class that starts up the Launcher activity
public class Splash extends TabActivity {
TabHost th;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
th = (TabHost)findViewById(R.id.tabHost2);
TabHost.TabSpec tab1 = th.newTabSpec("First Tab");
TabHost.TabSpec tab2 = th.newTabSpec("Second Tab");
TabHost.TabSpec tab3 = th.newTabSpec("Third tab");
tab1.setIndicator("Tab1");
tab1.setContent(new Intent(this,TabActivity1.class));
tab2.setIndicator("Tab2");
tab2.setContent(new Intent(this, TabActivity2.class));
tab3.setIndicator("Tab3");
tab3.setContent(new Intent(this, TabActivity3.class));
th.addTab(tab1);
th.addTab(tab2);
th.addTab(tab3);
}
}
TabActivity1.java-
public class TabActivity1 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv=new TextView(this);
tv.setTextSize(25);
tv.setGravity(Gravity.CENTER_VERTICAL);
tv.setText("This Is Tab1 Activity");
setContentView(tv);
}
}
TabActivity2.java:-
public class TabActivity2 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv=new TextView(this);
tv.setTextSize(25);
tv.setGravity(Gravity.CENTER_VERTICAL);
tv.setText("This Is Tab2 Activity");
setContentView(tv);
}
}
TabActivity3.java
public class TabActivity3 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv=new TextView(this);
tv.setTextSize(25);
tv.setGravity(Gravity.CENTER_VERTICAL);
tv.setText("This Is Tab3 Activity");
setContentView(tv);
}
}
splash.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TabHost
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/tabHost2"
android:layout_gravity="center_horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"></TabWidget>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"></LinearLayout>
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"></LinearLayout>
<LinearLayout
android:id="#+id/linearLayout3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"></LinearLayout>
</FrameLayout>
</LinearLayout>
</TabHost>
</LinearLayout>
Change this line
th = (TabHost)findViewById(R.id.tabHost2);
to
th = (TabHost)findViewById(android.R.id.tabHost2);
This will do.
Because, in the layout file, you might have set Tabhost id like this android:id="#android:id/tabhost2">
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I'm trying to put a listView (existing list named sitesList) in a TabHost but when I run my app, it closes (without the code for tabhost the app works), here is my code:
public class MainActivity extends TabActivity {
private SitesAdapter mAdapter;
private ListView sitesList;
private static final String Noutati = "Noutati";
private static final String Favorite = "Favorite";
private static final String PROFILE_SPEC = "Profile";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i("StackSites", "OnCreate()");
setContentView(R.layout.activity_main);
TabHost tabHost = getTabHost();
TabSpec inboxSpec = tabHost.newTabSpec(Noutati);
Intent inboxIntent = new Intent(this, Noutati.class);
inboxSpec.setContent(inboxIntent);
TabSpec outboxSpec = tabHost.newTabSpec(Favorite);
//Intent outboxIntent = new Intent(this, OutboxActivity.class);
//outboxSpec.setContent(outboxIntent);
tabHost.addTab(inboxSpec);
tabHost.addTab(outboxSpec);
sitesList = (ListView)findViewById(R.id.sitesList);
...
public class Noutati extends ListActivity {
private ListView sitesList;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.noutati);
sitesList = (ListView)findViewById(R.id.sitesList);
this.setListAdapter((android.widget.ListAdapter) sitesList);
}
}
Activity_main
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout>
noutati.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="#+id/sitesList"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Thank you very much
EDIT:
I see that you have named your variable Noutati and your class Noutati. Thy changing the variable to something like noutatiName.
As I have never encountered this before, I'm not sure this will work, but the error most likely appears because you have to set the indicator for each tab spec.
So after TabSpec inboxSpec = tabHost.newTabSpec(Noutati); you should also type inboxSpec .setIndicator("Notuati");
Hope it helps!
Also you should do that after TabSpec outboxSpec = tabHost.newTabSpec(Favorite);
Link
I am making tabs in android. Currently this is how my tabs are working. When I click on any tab it will take me to appropriate tab's view which is fine. But lets say when I click on Profile tab then inside this profile view there is a button Add New. When I click on Add New button then it takes me to it's view but it also removes tabs from the view which I don't want. So how can I make tabs always available even when user clicks any link or button inside any view?
Here is my current code
tabs.xml
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" />
</RelativeLayout>
</TabHost>
Tabs.java
public class Tabs extends TabActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tabs);
Resources resources = getResources();
TabHost tabHost = getTabHost();
Intent startUseSaldo = new Intent().setClass(this, Usesaldo.class);
TabSpec useSaldo = tabHost
.newTabSpec("UseSaldo")
.setIndicator("Use Saldo")
.setContent(startUseSaldo);
Intent startHistory = new Intent().setClass(this, History.class);
TabSpec history = tabHost
.newTabSpec("History")
.setIndicator("History")
.setContent(startHistory);
Intent startProfile = new Intent().setClass(this, Profile.class);
TabSpec profile = tabHost
.newTabSpec("Profile")
.setIndicator("Profile")
.setContent(startProfile);
// add all tabs
tabHost.addTab(useSaldo);
tabHost.addTab(history);
tabHost.addTab(profile);
tabHost.setCurrentTab(1);
}
}
Profile.java
public class Profile extends Activity {
Button bAddNew;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.profile);
bAddNew = (Button)findViewById(R.id.bAddNew);
bAddNew.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent AddFacility = new Intent(getApplicationContext(), AddFacility.class);
startActivity(AddFacility);
}
});
}
}
AddFacility.java
public class AddFacility extends Activity {
#Override
public void setContentView(int layoutResID) {
// TODO Auto-generated method stub
super.setContentView(R.layout.add_facility);
}
}
Try this example - http://gamma-point.com/content/android-how-have-multiple-activities-under-single-tab-tabactivity
You have to use ActivityGroup with Tabhost
http://richipal.com/post/2624844577
But as ActivityGroups are depericated you should use Fragments with Tabhost
I have looked at posts on Stack Overflow and at tutorials on other websites, and I cannot understand how to use TabHost. Can someone please explain it to me and maybe send me a link to a tutorial?
In ManiActivity extends TabActivity
public class MainActivity extends TabActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
TabHost mTabHost = getTabHost();
mTabHost.addTab(mTabHost.newTabSpec("first").setIndicator("First").setContent(new Intent(this ,FirstActivity.class )));
mTabHost.addTab(mTabHost.newTabSpec("second").setIndicator("Second").setContent(new Intent(this , SecondActivity.class )));
mTabHost.setCurrentTab(0);
}
}
In this activity not use layout "activity_main.xml" .
Tabhost mTabHost = getTabHost(); is create main tab.
mTabHost.newTabSpec("first") is create tabspec id "first".
setIndicator("First") is create text "First" in title tab.
setContent(new Intent(this ,FirstActivity.class )) is use content from FirstActivity.class ( FirstActivity.java )
mTabHost.addTab(....) is add spectab to main tab
mTabHost.setCurrentTab(0) is defult tab when start page.
FirstActivity.java
public class FirstActivity extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView( R.layout.first_layout );
}
}
SecondActivity.java
public class SecondActivity extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView( R.layout.second_layout );
}
}
"R.layout.first_layout" is content from first_layout.xml
"R.layout.second_layout" is content from second_layout.xml
In AndroidManifest.xml add activity name ".FirstActivity" and ".SecondActivity" in example xml.
Finish!!!!!
First of all while TabHost is not deprecated, TabActivity on other hand is deprecated due to Fragment API.
There are two ways to use TabHost; using Fragment via FragmentTabHost and using TabHost.TabContentFactory.
1. Using Fragment via FragmentTabHost
This sample code show you how to use TabHost in Activity.
FragmentTabHostActivity.java
public class FragmentTabHostActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_tab_host_activity);
FragmentTabHost fragmentTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
fragmentTabHost.setup(this, getSupportFragmentManager(), android.R.id.tabcontent);
fragmentTabHost.addTab(getTabSpec1(fragmentTabHost), Tab1Fragment.class, null);
fragmentTabHost.addTab(getTabSpec2(fragmentTabHost), Tab2Fragment.class, null);
}
private TabHost.TabSpec getTabSpec1(FragmentTabHost tabHost) {
return tabHost.newTabSpec("First Tab")
.setIndicator("Tab1");
}
private TabHost.TabSpec getTabSpec2(FragmentTabHost tabHost) {
return tabHost.newTabSpec("Second Tab")
.setIndicator("Tab 2");
}
}
fragment_tab_host_activity.xml
<android.support.v4.app.FragmentTabHost
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</android.support.v4.app.FragmentTabHost>
Actually by using Fragment, you can use Tab inside a Fragment (Android docs).
2. Using TabHost.ContentFactory
TabHostActivity.java
public class TabHostActivity extends AppCompatActivity implements TabHost.TabContentFactory {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TabHost tabHost = (TabHost) findViewById(android.R.id.tabhost);
tabHost.setup();
tabHost.addTab(getTabSpec1(tabHost));
tabHost.addTab(getTabSpec2(tabHost));
}
private TabHost.TabSpec getTabSpec1(TabHost tabHost) {
return tabHost.newTabSpec("First Tab")
.setIndicator("Tab1")
.setContent(this);
}
private TabHost.TabSpec getTabSpec2(TabHost tabHost) {
return tabHost.newTabSpec("Second Tab")
.setIndicator("Tab 2")
.setContent(this);
}
#Override
public View createTabContent(String tag) {
return LayoutInflater.from(this).inflate(R.layout.activity_tab_1, null);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</TabHost>
However, I personally recommend using newest Material Design style TabLayout class.
I am having trouble trying to figure out how to convert my current tab setup to one that uses views and not seperate activities... I have issues with calling my search function and I think it is due to the way I have created my tabs.
My main launcher activity is public class Menu extends TabActivity which creates the tabs
intent = new Intent().setClass(this, TabGroup1.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("codes").setIndicator("All Codes",res.getDrawable(R.drawable.ic_tab_codes))
.setContent(intent);
tabHost.addTab(spec);
`TabGroup1' does the following for each tab
public class TabGroup1 extends TabGroupActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
startChildActivity("Category", new Intent(this,Category.class));
}
}
Which then calls the ListActivity which shows the content from there when an item is clicked another intent is created which then starts a new activity which allows me to have the tabs on each level as the user goes down the lists.
This is done with the following code
public void onListItemClick(ListView parent, View view, int position, long id) {
Intent intent = new Intent(getParent(), SubCategory.class);
Cursor cursor = (Cursor) adapter.getItem(position);
intent.putExtra("CATEGORY", cursor.getString(cursor.getColumnIndex("_id")));
/*startActivity(intent);*/
TabGroupActivity parentActivity = (TabGroupActivity)getParent();
parentActivity.startChildActivity("SubCategory", intent);
}
TabGroupActivity is a class which I found from a tutorial that allows you to have multiple activities under the same tab layout.
What I am struggling is with converting what I have to using views and using setContent to change the views.
I have found this example but it doesn't provide enough detail for me to go on.
Also found this one as well...
Can someone please provide me the run down on what I need to change and also how do I setContent using my listactivities...
Thanks in advance
A couple things... setContent defines the content, it doesn't cause the switching of tabs. If you want to force a change to a certain tab you use TabHost.setCurrentTab(tabid);, otherwise it defaults to the first tab, then whatever the user chooses.
An example from one of my own projects (This project actually has four tabs, but I've cut out some to try and keep this to the point). There are several ways to do it, but I found the easiest was to create a method to populate each tab, that way I could refresh a tab as needed by calling the appropriate method for whichever tab I needed (all of the java below is contained in the TabActivity).
setupdetailmain.xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:padding="5dp" >
<TextView
android:id="#+id/setupheader"
android:layout_width="fill_parent"
android:layout_height="20dp"
android:textSize="15dp" />
<TabWidget
android:id="#android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="30dp"
android:gravity="bottom" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" >
<!-- General Info Tab -->
<LinearLayout
android:id="#+id/note_tab"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
</LinearLayout>
<!-- Tool Tab -->
<LinearLayout
android:id="#+id/offset_tab"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ListView
android:id="#+id/list2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:drawSelectorOnTop="false" />
</LinearLayout>
</FrameLayout>
</LinearLayout>
</TabHost>
tab setup code (extends TabActivity)
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.setupdetailmain);
// ***************************************************************
// Set up the tabs in the tabhost
// ***************************************************************
tabHost = getTabHost();
TabHost.TabSpec spec;
spec = tabHost.newTabSpec("Offsets").setIndicator("Offsets")
.setContent(R.id.offset_tab);
tabHost.addTab(spec);
spec = tabHost.newTabSpec("Notes").setIndicator("Notes")
.setContent(R.id.note_tab);
tabHost.addTab(spec);
populateTabs(StartTab);
}
tab populate methods
// ***************************************************************
// Fill the Notes tab
// ***************************************************************
private void notestab() {
notes = (LinearLayout) findViewById(R.id.note_tab);
notestxt = new TextView(this);
notestxt.setText(SETUPINFO_NOTES);
notestxt.setTextSize(15);
notes.addView(notestxt);
}
// ***************************************************************
// Fill the Offset tab
// ***************************************************************
private void offsettab() {
wpccount = 0;
for (int i = 0; i < 20; i++) {
if (wpcdesc[i] != null) {
wpcdisplayhold[wpccount] = wpcid[i] + " - " + wpcdesc[i];
wpcidhold[wpccount] = wpcid[i];
wpcdeschold[wpccount] = wpcdesc[i];
wpccount++;
}
}
wpcdisplay = new String[wpccount];
for (int i = 0; i < wpccount; i++) {
wpcdisplay[i] = wpcdisplayhold[i];
}
mWPCView = (ListView) findViewById(R.id.list2);
mWPCView.setAdapter(new ColorizingListAdapter(SetupDisplay.this,
wpcdisplay, "Offset"));
registerForContextMenu(mWPCView);
}
This uses a custom adapter, but hopefully it gets across the idea of how to set up your lists in a tab view without doing a new activity.