I have a button and below i have tabview with several tabs.
Wherewer I choose a tab I want to listen clics for elements on main activity. For example how can I listen clicks for imRefresh?
If I set onitem click listener I recieve nullpointer exception
main activity, which ititialise tabview
public class MainActivity extends TabActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TabHost tabHost = getTabHost();
// Android tab
Intent intentAndroid = new Intent().setClass(this, Tab1Activity.class);
TabSpec tabSpecAndroid = tabHost
.newTabSpec("Test1")
.setIndicator("Test1")
.setContent(intentAndroid);
// Apple tab
Intent intentApple = new Intent().setClass(this, Tab2Activity.class);
TabSpec tabSpecApple = tabHost
.newTabSpec("Test2")
.setIndicator("Test2")
.setContent(intentApple);
// add all tabs
tabHost.addTab(tabSpecAndroid);
tabHost.addTab(tabSpecApple);
//set Windows tab as default (zero based)
tabHost.setCurrentTab(2);
}
}
layout of main activity
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/for_t"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:id="#+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#drawable/background"
android:gravity="center"
android:orientation="horizontal" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="6dp"
android:src="#drawable/logo" />
<ImageView
android:id="#+id/imRefresh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dip"
android:layout_toLeftOf="#+id/imageView3"
android:src="#drawable/ic_action_refresh" />
<ImageView
android:id="#+id/imSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:src="#drawable/ic_action_search" />
</RelativeLayout>
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="yarh.youtubenblog.MainActivity"
tools:ignore="MergeRootFrame" >
<TabHost
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" >
</TabWidget>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
</LinearLayout>
</TabHost>
</FrameLayout>
</LinearLayout>
one of tabs activity
public class Tab2Activity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ImageView refresh = (ImageView) findViewById(R.id.imRefresh);
refresh.setOnClickListener(refreshV);
TextView textview = new TextView(this);
textview.setText("This is Apple tab");
setContentView(textview);
}
private OnClickListener refreshV = new OnClickListener() {
#Override
public void onClick(View v) {
GetAdds feed = new GetAdds();
feed.execute();
}
};
}
You can't - period. Not even via hacking around with ViewParents and window hierarchies. Sorry. This is due to how TabActivity works: Each of its tabs is actually its own self-contained Activity, that gets kind of "transplanted" into the TabActivity via some magic on the Android Framework's side. Separate activities have absolutely no way (via Android APIs) of getting view information about each other.
What'd make your task a lot simpler, is to switch to Fragments. Your use case is one of the most common examples: check out http://android.codeandmagic.org/android-tabs-with-fragments/
Related
Tabhost throwing up a runtime error - code seems fine to me - but obviously not. I have 2 activities that I want to show in some tabs.
Error
(java.lang.IllegalArgumentException: you must specify a way to create the tab content)
MainActivity
public class MainActivity extends TabActivity
{
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TabHost tabHost = getTabHost();
// Tab 1
TabHost.TabSpec tab1 = tabHost.newTabSpec("tab1");
// setting Title and Icon for the Tab
tab1.setIndicator("", getApplicationContext().getResources().getDrawable(R.drawable.drawtab1));
Intent tab1Intent = new Intent(this, Tab1Activity.class);
tab1Intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
tab1.setContent(tab1Intent);
// Tab 2
TabHost.TabSpec tab2 = tabHost.newTabSpec("tab2");
// setting Title and Icon for the Tab
tab2.setIndicator("", getApplicationContext().getResources().getDrawable(R.drawable.drawtab1));
Intent tab2Intent = new Intent(this, Tab2Activity.class);
tab1Intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
tab1.setContent(tab2Intent);
tabHost.addTab(tab1);
tabHost.addTab(tab2);
}
}
XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.dawnlp.innertab.MainActivity"
android:background="#00547d"
android:textColor="#FFFFFF"
>
<TabHost
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"
>
</TabWidget>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
</FrameLayout>
</LinearLayout>
</TabHost>
</LinearLayout>
Dont think it has anything to do with the other activities I have.
change last tab code as :
You are using tab1 instead of tab2 for indicator
// Tab 2
TabHost.TabSpec tab2 = tabHost.newTabSpec("tab2");
// setting Title and Icon for the Tab
tab2.setIndicator("", getApplicationContext().getResources().getDrawable(R.drawable.drawtab1));
Intent tab2Intent = new Intent(this, Tab2Activity.class);
tab2Intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
tab2.setContent(tab2Intent);
I am trying to create a tab host to but I cant seem to make it work, what am i doing wrong? I have setup up createTab() on my onCreate method but it crashes.
I am simply creating a tabhost that holds around 5 tabs. Also I am trying to implement swipe view if anyone knows how to implement it
Main activity
public class MainActivity extends Activity {
TabHost tab;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
private void createTab() {
TabHost.TabSpec tab1Spec = tab.newTabSpec("tab1");
tab1Spec.setIndicator("TAB 1");
Intent p = new Intent(this, tab1.class);
tab1Spec.setContent(p);
TabHost.TabSpec tab2Spec = tab.newTabSpec("tab2");
tab2Spec.setIndicator("TAB 2");
Intent p = new Intent(this, tab2.class);
tab2Spec.setContent(p);
tab.addTab(tab1Spec);
tab.addTab(tab2Spec);
}
}
Activity_main xml
<TabHost
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">
<TabWidget
android:id="#+id/tab"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></TabWidget>
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:id="#+id/tab1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"></LinearLayout>
<LinearLayout
android:id="#+id/tab2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
</LinearLayout>
</FrameLayout>
</LinearLayout>
</TabHost>
You didn't initialize your tab host , then you've used it in this line which throw a NullPointerException :
TabHost.TabSpec tab1Spec = tab.newTabSpec("tab1");
before using tab initialize it like :
tab = (TabHost)this.findViewById(android.R.id.tabhost)
Hi guyzz I have TabActivity as following simple code
public class TabhostActivity extends Activity{
TabHost host;
public class TabhostActivity extends Activity{
TabHost host;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.tablayout);
host = (TabHost) findViewById(R.id.mytabhost);
host.setup();
Intent intent = new Intent(getApplicationContext(), RatingBarActivity.class);
TabHost.TabSpec spec = host.newTabSpec("positions").setIndicator("Positions",getResources().getDrawable(R.drawable.add)).setContent(intent);
host.addTab(spec);
host.setCurrentTab(0);
}
and has a simple tab layout as
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TabHost
android:id="#+id/mytabhost"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="5dp">
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="5dp">
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#FF0000">
</FrameLayout>
<HorizontalScrollView
android:id="#+id/horizontalScrollView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TabWidget
android:layout_marginLeft="5dp"
android:id="#android:id/tabs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:tabStripEnabled="true" >
</TabWidget>
</HorizontalScrollView>
</LinearLayout>
</TabHost>
</LinearLayout>
So please help me where the code is getting wrong?? I got exception as
02-23 14:09:47.920: E/AndroidRuntime(1000): Caused by: java.lang.IllegalStateException: Did you forget to call 'public void setup(LocalActivityManager activityGroup)'?
you are extending Activity class, try extending TabActivity class
or
if you want to use the Activity class then use the following :
host = (TabHost) findViewById(R.id.tabhost); //here tabHost will be your Tabhost
LocalActivityManager mLocalActivityManager = new LocalActivityManager(mActivity, false);
mLocalActivityManager.dispatchCreate(state); // state will be bundle your activity state which you get in onCreate
tabHost.setup(mLocalActivityManager);
I have a strange error with my code.
I am trying to show to user logo and after that to display the tabs.
Tried to clean and build project still the same errors,and I dont use import R.
But my problem is some strange error :
java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'
My app have error on
setContentView(R.layout.logoscreen);
my code is:
public class tabs extends TabActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.logoscreen);
new GetDataTask(this).execute();
}
private class GetDataTask extends AsyncTask<Void, Void, Integer> {
Context context;
GetDataTask(Context context){this.context=context;}
protected void onPostExecute(Integer result) {
//tabs.this.setContentView(R.layout.tabs);
setContentView(R.layout.logoscreen);
//setContentView(R.layout.tabs);
TabHost tabHost= (TabHost)tabs.this.findViewById(R.id.tabhost);
TabHost.TabSpec spec; // Resusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(context,start.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("Heb news").setIndicator("Heb news").setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(context, rusNewsP.ListRusNews.class);
spec = tabHost.newTabSpec("Rus News").setIndicator("Rus News").setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
}
}
my xml file is logoscreen.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon" />
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+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"
android:padding="5dp">
<TabWidget
android:id="#+id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#+id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" />
</LinearLayout>
</TabHost>
</LinearLayout>
thanks for the help!!!
if you use Tabhost then must have android:id="#android:id/tabhost" and You have
android:id="#+id/tabhost"
I want to make my layout for my first tab something like this:
I have already asked a question similar to this. I am getting stuck on the formatting:
This is what my code looks like:
<?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: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" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" />
<RelativeLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="#+id/simpleMode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding = "5dip"
android:layout_alignParentLeft="true"
android:src="#drawable/ic_tab_artists_grey" />
<TextView
android:id="#+id/right_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:layout_toRightOf="#+id/simpleMode"
android:gravity="right"
android:text="Description" />
</RelativeLayout>
</LinearLayout>
</TabHost>
My project runs but absolutely nothing shows up on the screen? Help is very much appreciated!!
Here is my activity class:
package com.joshi.remotedoc;
import android.app.TabActivity;
import android.os.Bundle;
import android.widget.TabHost;
import android.content.Intent;
import android.content.res.Resources;
public class Detailed_ModeActivity extends TabActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.patientmode);
Resources res = getResources();
// Resource object to get Drawables
TabHost tabHost = getTabHost();
// The activity TabHost
TabHost.TabSpec spec;
// Reusable TabSpec for each tab
Intent intent;
// Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, SimpleMode.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("simpleMode").setIndicator("simpleMode",
res.getDrawable(R.drawable.ic_tab_artists_white))
.setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(this, DetailedMode.class);
spec = tabHost.newTabSpec("2ndtab").setIndicator("MySecondTab", res.getDrawable(R.drawable.something)) .setContent(intent);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("detailedMode").setIndicator("detailedMode",
res.getDrawable(R.drawable.ic_tab_artists_grey))
.setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(2);
}
}
You need to properly define your layout, then you need to load your layout in the activity you are starting.
http://developer.android.com/guide/topics/ui/declaring-layout.html
First you create your 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" >
<TextView android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello, I am a TextView" />
<Button android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello, I am a Button" />
</LinearLayout>
Then you need to create the Java to load your XML in the oncreate method:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_layout);
}