Develop Reference

setProgressBarIndeterminateVisibility(true) not showing progress bar

I already have the
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.activity_profile);
and the
setProgressBarIndeterminateVisibility(true);
if (isOnline()) {
retrieveProfile();
} else {
Toast.makeText(ProfileActivity.this, getString(R.string.internet_error), Toast.LENGTH_LONG).show();
}
setProgressBarIndeterminateVisibility(false);
This code was already working, but somehow the progress bar doesn't show anymore.
Any idea would be appreciated!

That function doesn't show the bar, it just makes it show an indeterminate bar rather than a determinate bar. You still need to call setProgressBarVisibility(true);

Try this...
setSupportProgressBarIndeterminateVisibility(boolean)
to get backward compatibility.

dynamically set size of indeterminate ProgressBar on ActionBar

I implemented Progress Bar on action bar during network call but displaying the progress Bar on Action Bar is too large. I want to set dynamic size of progressbar. I searched lot but not achieve my goal.so following is the code for ActionBar ProgressBar. Please anybody suggest me some answer and anybody having another way to do above task please tell me.
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); }
protected void onPreExecute() {
// Show IndeterminateProgressBar
setSupportProgressBarIndeterminateVisibility(true); }
protected void onPostExecute(Void result) {
setSupportProgressBarIndeterminateVisibility(false);}
Thanks In Advance

Set a Timer and use LayoutParams to change the size.
{ParentLayout}.LayoutParams params = new {ParentLayout}.LayoutParams(h,w);
progressBar.setLayoutParams(params);
And use the built-in java Timer to time it.

Make fragments full screen programmatically

I have a ViewPager and FragmentPagerAdapter set up in one activity with 3 fragments. All fragments are loaded simultaneously and are kept in memory using
mPager.setOffscreenPageLimit(2);
One of these fragments hosts a camera preview that I would like to make full screen, with no status bar or action bar. The other fragments require that the action bar be displayed.
How would I make only the camera preview fragment full screen while keeping the other two fragments normal? I have tried using themes, which means breaking the action bar.
Programmatically calling the following doesn't help, because it forces the whole activity to be full screen (and thus the other two fragments along with it):
requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
I also tried implementing ViewPager.OnPageChangeListener:
public void onPageSelected(int position) {
if(position == 1)
getActionBar().hide();
else
getActionBar().show();
}
This does hide the action bar, but it doesn't hide the system status bar (I'm talking about where the notifications, status icons, and time are), and the action bar hide/show animation is also very choppy when swiping.
For an example of what I want to do exactly, see Snapchat - they manage to pull off the swiping between camera and other fragments perfectly.
Edit:
So I changed my onPageSelected to this:
public void onPageSelected(int position) {
if(position == 1) {
MainActivity.this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
MainActivity.this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
} else {
MainActivity.this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
MainActivity.this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
}
}
This enables me to change whether the status bar is displayed or not. However, it causes a large amount of jank. Same problem with the action bar.
I notice that in Snapchat the status bar slides up and down after the tab change is complete. I'm not sure how to implement this, so any advice regarding this aspect would be appreciated.

I figured out how to do this, though it's definitely a hack.
The trick is not to use the Android action bar, it's to make your own in your layout files.
I defined two more RelativeLayouts in my code:
<RelativeLayout
android:id="#+id/padding"
android:layout_width="fill_parent"
android:layout_height="25dip"
android:layout_alignParentTop="true"
android:background="#color/abs__background_holo_dark" />
<RelativeLayout
android:id="#+id/fake_action_bar"
android:layout_width="fill_parent"
android:layout_height="48.0dip"
android:layout_below="#id/padding" >
<!-- stuff here -->
</RelativeLayout>
The top RelativeLayout is padding for the Android status bar. I set it to 25dip, but it may vary - it would probably be best to set this value programmatically. Also you need to set it to a black color so that it matches the status bar color and makes the UI look more natural.
The bottom RelativeLayout is for your fake action bar. You need to stuff everything your action bar needs (title text, buttons, etc.) in this RelativeLayout. I set it to 48dip, but again, this will vary and you should probably set it programmatically.
In the Activity hosting your Fragments, ViewPager and FragmentPagerAdapter, you need to set the flags telling Android to make the status bar an overlay:
WindowManager.LayoutParams params = getWindow().getAttributes();
params.flags |= WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS;
Now we need to make the status bar hide and show when we switch fragments. Have your activity implement ViewPager.OnPageChangeListener and then use the following code:
#Override
public void onPageScrollStateChanged(int state) {
switch(state) {
case ViewPager.SCROLL_STATE_IDLE:
if(mPosition == 1) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
} else {
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
}
}
}
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
mPosition = position;
}
We keep track of the page number using onPageSelected and use it in onPageScrollStateChanged to dynamically hide/show the status bar depending on which Fragment is currently being displayed. You can't do this in onPageSelected because this will cause the status bar to redisplay halfway through a swipe.
You also need to make sure to add appropriate code for your fake action bar - for buttons, this would be OnClickListener.

First, in the activity/fragment you want to hide the status-bar:
Make a public static of the fragment.
public static Fragment QSFrag;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
QSFrag = this;
}
Then in your onPageSelected:
public void onPageSelected(int position) {
// TODO Auto-generated method stub
if(position == 1){
mActionBar.hide();
YourActivityWithNoStatusOrActionBar.QSFrag.getActivity().getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
}else{
mActionBar.show();
// mActionBar.setSelectedNavigationItem(position); I use this, not sure u need/want it.
}
}
I've just tested it, and it works. But it doesn't look awesome when you leave the fragment with no status-bar. :p

You can use this code in onCreate:
setTheme(android.R.style.Theme_Translucent_NoTitleBar_Fullscreen);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
if (getSupportActionBar() != null) {
getSupportActionBar().hide();
}

Show white screen until layout is completely constructed

My problem is that I have complicated layout, and when my application starts, I see how every view is adding to layout. I see my custom window title bar construction too. I see empty custom window title, with gradient background on start, and then 1 - 2 sec later I see completed window title with my views.
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title);
Is there simple way to show white screen, until my activity and custom title bar will be completely constructed?
The main trouble is that I cant start application with no title, and then add custom window title.
Only solution I know is splash screen, but it is too complicated for just this small task.

Use an asynctask like this:
private class LoadingMyView extends AsyncTask<void, void, int> {
protected void onPreExecute ()
{
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title);
//show whiteView
}
protected int doInBackground() {
return 0;
}
protected void onPostExecute(int result) {
//Hide white View
}
}
Note: I didnt test the code but i think more or less is ok
AsyncTask

Android: Title bar onclick launcher icon

I'd like to add an onclick listener to my launcer icon in the title bar of my app.
Since i'm also supporting API level 8 i do not have an Action bar.
The following code works great, however the menu is set back to default (white background, white text, small icon etc.)
The code:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_LEFT_ICON);
setContentView(R.layout.activity_main);
getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,R.drawable.ic_launcher);
View v = findViewById (android.R.id.title);
v.setClickable(true);
v.setOnClickListener(new OnClickListener() {
#Override public void onClick(View v) {
Toast.makeText(MainActivity.this, "Works!", Toast.LENGTH_SHORT).show();
}
});
}
}
source: adding click listener to titlebar image
How can I keep my standard layout of my title bar (black background color, white text and large icon), while also implement this onclick listener?
Here are two shots of the different layouts:
good: http://gyazo.com/40d1cdd5302de3cd28b698b68164a556
bad: http://gyazo.com/3cee42524ec4167392baec6cc2369584
(Note that the good one is also has a greater height)