I have the following scenario:
In my main activity, I'm using sliding tabs using viewpager and fragmentpageradapter.
Suppose I have 2 tabs.
In Tab 2, on an event(say button press), I start a new activity using startActivityForResult.
Now, when I get back to Tab 2 from the new activity (in onActionResult), I want Tab 1 to get refreshed.
I'm currently doing it using getActivity.recreate()
Is this good way to do considering performance or is there any other way?
My main activity onCreate code is:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
// setup action bar for tabs
final ActionBar actionBar = getActionBar();
TabsPagerAdapter mAdapter = new TabsPagerAdapter(getFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.setDisplayShowTitleEnabled(true);
// Create a tab listener that is called when the user changes tabs.
ActionBar.TabListener tabListener = new ActionBar.TabListener() {
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
viewPager.setCurrentItem(tab.getPosition());
}
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
};
ActionBar.Tab tab = actionBar.newTab()
.setText(R.string.tab1)
.setTabListener(tabListener);
actionBar.addTab(tab, 0, false);
tab = actionBar.newTab()
.setText(R.string.tab2)
.setTabListener(tabListener);
actionBar.addTab(tab, 1, true);
// on swiping the viewpager make respective tab selected
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
getActionBar().setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
Related
Screenshot of my app:
I want to change the blue underline to white programmatically, that is by using java code not using xml styles. Can anyone suggest please how to do it?
Here is my java code. I am able to change tab background.
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "Music", "Video"};
#SuppressWarnings("deprecation")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
//actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#DF0174")));
actionBar.setStackedBackgroundDrawable(new ColorDrawable(Color.parseColor("#DF3A01")));//to change the tab colors
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
}
Just use a filter
This will be applied to the region that isn't transparent
tabHost.getTabWidget().getChildAt(tabHost.getCurrentTab()).getBackground().setColorFilter(Color.BLUE, PorterDuff.Mode.MULTIPLY);
One line of code - no need to change states
Just add this attribute to your TabLayout in your xml file:
app:tabIndicatorColor="#color/yourColor"
I have 3 different Tabs, where each one has text. Now I want to find out how to Add drawable images on top of the text of the tab. I know that this was possible using tabhosts but that has been deprecated. My class is the following :
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "Top Rated", "Games", "Movies" };
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
}
See this link: http://developer.android.com/reference/android/app/ActionBar.Tab.html#setIcon%28android.graphics.drawable.Drawable%29
Sample code:
actionBar.addTab(actionBar.newTab().setText(tab_name).setIcon(R.drawable.tab_icon).setTabListener(this));
But please consider:
Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. (http://developer.android.com/design/patterns/navigation.html)
Edit:
For your Code you could do something like this:
Create the icons as you do for the titles:
// Tab titles
private String[] tabs = { "Top Rated", "Games", "Movies" };
//make sure this has the same length as tabs-array!
private int[] icons = {R.drawable.tab_rated, R.drawable.tab_games, R.drawable.tab_movies}
And add them in a loop:
// Adding Tabs
for (int i = 0; i < tabs.length; i++) {
actionBar.addTab(actionBar.newTab().setText(tabs[i]).setIcon(icons[i]).setTabListener(this));
}
i have swipe tabs with 3 tab i first tab will have web view with Facebook other got text only , now if i swipe from first tab to the second then come back to the first its good but if i swipe to the 3rd tab when i go back to the first tab the web view will reload again , how can i stop that
this is my code
home.java
public class MainActivity extends FragmentActivity {
ViewPager Tab;
TabPagerAdapter TabAdapter;
ActionBar actionBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TabAdapter = new TabPagerAdapter(getSupportFragmentManager());
Tab = (ViewPager)findViewById(R.id.pager);
Tab.setOnPageChangeListener(
new ViewPager.SimpleOnPageChangeListener() {
#Override
public void onPageSelected(int position) {
actionBar = getActionBar();
actionBar.setSelectedNavigationItem(position); }
});
Tab.setAdapter(TabAdapter);
actionBar = getActionBar();
//Enable Tabs on Action Bar
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
ActionBar.TabListener tabListener = new ActionBar.TabListener(){
#Override
public void onTabReselected(android.app.ActionBar.Tab tab,
FragmentTransaction ft) {
// TODO Auto-generated method stub
}
#Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
Tab.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(android.app.ActionBar.Tab tab,
FragmentTransaction ft) {
// TODO Auto-generated method stub
}};
//Add New Tab
actionBar.addTab(actionBar.newTab().setText("Android").setTabListener(tabListener));
actionBar.addTab(actionBar.newTab().setText("iOS").setTabListener(tabListener));
actionBar.addTab(actionBar.newTab().setText("Windows").setTabListener(tabListener));
}
}
ViewPager has a method setOffscreenPageLimit() that determines how many pages to retain when they go off screen.
try increasing the page limit. For example:
Tab.setOffscreenPageLimit(3);
Hi in my project i am using a actionbar with three tabs which are fragments. now i have a button in fragment C, when i click the button i need to swipe back to fragment B, also i want to carry my data from fragment C to B this is secondary, can some one point me in right direction how can i achieve this .
Below is my MainActivty which has all the fragments
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private String[] tabs = { "fragA", "fragB", ""fragC", " };
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main)
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
I think this question is a duplicate, take a look here Android ActionBar Tabs - Swipe code is almost the same: a viewpager, an actionbar and you need transiction between fragments to be done with a swipe gesture.
Hope it helped you out ;)
I am really stuck. I did four Swipe Views with Tabs in my main activity but what I want is when user opens the application it shows automatically the second tab not the first one.
This is my MainActivity.java
public class MainActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "First Tab", "Second Tab", "Third Tab", "Fourth Tab" };
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
And this is my main_activity.xml:
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
The second tab is index 1, all you should need to do is add a setCurrentItem to change the current tab to the correct one after you have setup the page change listener.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_paged);
... code omitted ...
/**
* on swiping the viewpager make respective tab selected
**/
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {...}
// set the default tab to the second tab
viewPager.setCurrentItem(1, false);
}
You can use this code to make the desired tab selected
suppose if you want to select the second tab to be default selected tab then
actionBar.setSelectedNavigationItem(1);
will do the same