Unable to hide action bar - android

I tried to create a new Android application and I tried to hide the action bar in the constructor of MainActivity, using the line requestWindowFeature(Window.FEATURE_NO_TITLE);
I've done this previously many times and there wasn't any problem in this. But when I try the same now it throws a error mentioning that "request feature must be called before adding the content"
Even I've tried adding this line in various positions but there wasn't any change in result. Can anyone help me solving this issue.

There are two ways to hide actionbar. I am assuming you are using Theme.AppCompat.Light style and your activity extends ActionBarActivity.
Set below lines to your styles.xml
<item name="windowActionBar">false</item>
Or
Set below lines in your java file.
getSupportActionBar().hide();

You can try like this:
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
super.onCreate(savedInstanceState);
It should be called before setContentView() method in onCreate() method of Activity.

You should add requestWindowFeature(Window.FEATURE_NO_TITLE); before super.onCreate(savedInstanceState);
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

This should work.Put this after super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
All the best.

Related

android - how to update the theme not in the onCreate event?

In my android app, I set the theme like this:
#Override
public void onCreate(Bundle savedInstanceState){
ThemeSetterActivity.setStyle(Main_MenuActivity.this); // this just calls context.setTheme();
super.onCreate(savedInstanceState);
setContentView(R.layout.main_menu);
}
But how do I change the theme using
ThemeSetterActivity.setStyle(Main_MenuActivity.this);
when it's in the onresume event. When I try it, it does call the function but the theme doesn't change. Does it have something to do with not calling:
super.onCreate(savedInstanceState);
setContentView(R.layout.main_menu);
To change the theme of your application during run time, you can use the setTheme(...) method within the activity. You must set the theme to an activity, before loading the views of that activity.
For more info and implementation, refer the link:
Updated
And, as per the docs to set theme you need to restart the entire activity.
You can try this code in onResume() of your activity,
Intent i = getIntent();
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);

Window Feature FEATURE_LEFT_ICON with ExpandableListActivity is not working

I am using API 10 GingerBread
I am not using a layout, although I did try this with a layout and it still doesn't work. Works fine with a normal Activity subclass, I don't see what the problem is.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_LEFT_ICON);
setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,R.drawable.ic_launcher);
For what it is worth, using FEATURE_NO_TITLE works fine. What gives? Anybody have any suggestions?
Try this code...
requestWindowFeature(Window.FEATURE_LEFT_ICON);
setContentView(R.layout.main); //or whatever layout is shows
setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,R.drawable.ic_launcher);

How to hide action bar before activity is created, and then show it again?

I need to implement splash screen in my honeycomb app.
I use this code in activity's onCreate to show splash:
setContentView(R.layout.splash);
getActionBar().hide();
and this code to show main UI after sometime:
setContentView(R.layout.main);
getActionBar().show();
But before onCreate is called and splash appears, there is small amount of time when action bar shown.
How can I make action bar invisible?
I tried to apply theme to activity without action bar:
<item name="android:windowActionBar">false</item>
but in that case getActionBar() always returns null and I found no way to show it again.
Setting android:windowActionBar="false" truly disables the ActionBar but then, as you say, getActionBar(); returns null.
This is solved by:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
getActionBar().hide();
setContentView(R.layout.splash); // be sure you call this AFTER requestFeature
This creates the ActionBar and immediately hides it before it had the chance to be displayed.
But now there is another problem. After putting windowActionBar="false" in the theme, the Activity draws its normal Window Title instead of an ActionBar.
If we try to avoid this by using some of the *.NoTitleBar stock themes or we try to put <item name="android:windowNoTitle">true</item> in our own theme, it won't work.
The reason is that the ActionBar depends on the Window Title to display itself - that is the ActionBar is a transformed Window Title.
So the trick which can help us out is to add one more thing to our Activity theme xml:
<item name="android:windowActionBar">false</item>
<item name="android:windowTitleSize">0dp</item>
This will make the Window Title with zero height, thus practically invisible .
In your case, after you are done with displaying the splash screen you can simply call
setContentView(R.layout.main);
getActionBar().show();
and you are done. The Activity will start with no ActionBar flickering, nor Window Title showing.
ADDON:
If you show and hide the ActionBar multiple times maybe you have noticed that the first showing is not animated. From then on showing and hiding are animated. If you want to have animation on the first showing too you can use this:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_ACTION_BAR);
// delaying the hiding of the ActionBar
Handler h = new Handler();
h.post(new Runnable() {
#Override
public void run() {
getActionBar().hide();
}
});
The same thing can be achieved with:
protected void onPostResume() {
super.onPostResume();
getActionBar().hide();
but it may need some extra logic to check if this is the first showing of the Activity.
The idea is to delay a little the hiding of the ActionBar. In a way we let the ActionBar be shown, but then hide it immediately. Thus we go beyond the first non-animated showing and next showing will be considered second, thus it will be animated.
As you may have guessed there is a chance that the ActionBar could be seen before it has been hidden by the delayed operation. This is actually the case. Most of the time nothing is seen but yet, once in a while, you can see the ActionBar flicker for a split second.
In any case this is not a pretty solution, so I welcome any suggestions.
Addition for v7 support actionbar user, the code will be:
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
getSupportActionBar().hide();
Using this simple code in your .class file to hide action bar
getSupportActionBar().hide();
If you are using ActionBarSherlock, then use Theme.Sherlock.NoActionBar Theme in your Activity
<activity
android:name=".SplashScreenActivity"
android:theme="#style/Theme.Sherlock.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Create two styles:
<style name="AppThemeNoBar" parent="Theme.AppCompat.Light">
<item name="android:windowNoTitle">true</item>
</style>
<style name="AppThemeBar" parent="Theme.AppCompat.Light">
<item name="android:windowNoTitle">false</item>
</style>
Set AppThemeNoBar as application theme and AppThemeBar to the activity where you want to show the ActionBar.
Using two styles you wont see the Action bar while views are loading.
Check this link Android: hide action bar while view load
Hi I have a simple solution by using 2 themes
Splash screen theme (add it to the manifest):
<style name="SplashTheme" parent="#android:style/Theme.Holo.NoActionBar">
<item name="android:windowBackground">#color/red</item>
</style>
normal theme (add it in your activity by setTheme(R.style.Theme)):
<style name="Theme" parent="#style/Theme.Holo"> <item name="android:windowBackground">#color/blue</item>
</style>
To support SDK 10:
#Override
public void onCreate(Bundle savedInstanceState) {
setTheme(R.style.Theme);
super.onCreate(savedInstanceState);
...........
...........
}
I was also trying to hide Action Bar on Android 2.2, but none of these solution worked. Everything ends with a crash. I checked the DDMS LOg, It was telling me to use 'Theme.AppCompat'.At last I Solved the problem by changing the android:theme="#android:style/Theme.Holo.Light.NoActionBar"Line
into android:theme="#style/Theme.AppCompat.NoActionBar"and it worked, but the the Interface was dark.
then i tried android:theme="#style/Theme.AppCompat.Light.NoActionBar" and finally got what i wanted.
After that when I Searched about 'AppCompat' on Developer Site I got This.
So I think the Solution for Android 2.2 is
<activity
android:name=".MainActivity"
android:theme="#style/Theme.AppCompat.Light.NoActionBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
And Sorry for my bad English Like Always.
Best result to me was to create an activity with ThemeNoTitleBar and without content as launcher. Then this activity call directly to the other.
Of course if you want you can add content to the Splash Activity but in my case I just wanted to show application directly.
Manifest:
<activity
android:name="com.package.SplashActivity"
android:theme="#android:style/Theme.Black.NoTitleBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Activity:
public class SplashActivity extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
//start StartActivity
Intent intent = new Intent(this, StartActivity.class);
startActivity(intent);
finish();
}
}
If you use one Activity included a splash screen, then you can do this if you use SherlockActionBar
getSupportActionBar().hide();
After the splash screen you can show it again with ...
getSupportActionBar().show();
It should be the same with native ActionBar of Android.
#Clerics solution works. But this appears to also be an issue with some of googles native apps: googles, play store, talk. Also other big apps like skype.
EDIT: Bellow solution have given me problem for actionbarsherlock on api < 4.0, the reason being setTheme doesn't work pre ice cream sandwich
Add following in your manifest within you application or activity tags:
android:theme="#style/Theme.NoActionBar"
And then in your main activity:
// Set theme
setTheme(R.style.YOUR_THEME);
getSupportActionBar().setTitle(R.string.title);
// Start regular onCreate()
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
best and simple
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
2015, using support v7 library with AppCompat theme, set this theme for your Activity.
<style name="AppTheme.AppStyled" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimaryDark">#color/md_indigo_100</item>
<item name="colorPrimary">#color/md_indigo_500</item>
<item name="colorAccent">#color/md_red_500</item>
<item name="android:textColorPrimary">#color/md_white_1000</item>
<item name="android:textColor">#color/md_purple_500</item>
<item name="android:textStyle">bold</item>
<item name="windowNoTitle">true</item>
<item name="windowActionBar">false</item>
</style>
For Splashscreen you should use this line in manifest and don't use getActionBar()
<item name="android:windowActionBar">false</item>
and once when Splash Activity is finished in the main Activity use below or nothing
<item name="android:windowActionBar">true</item>
Try this, it works for me:
Below gets rid of activity's title bar
requestWindowFeature(Window.FEATURE_NO_TITLE);
Below eliminates the notification bar to make the activity go full-screen
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
(Full Example Below)
Take note: These methods were called before we set the content view of our activity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Sets Application to full screen by removing action bar
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
// without this check, we would create a new fragment at each orientation change!
if (null == savedInstanceState)
createFragment();
}
this may be handy
add this to your manifest
android:theme="#android:style/Theme.Light.NoTitleBar"
cheers
The best way I find after reading all the available options is set main theme without ActionBar and then set up MyTheme in code in parent of all Activity.
Manifest:
<application
...
android:theme="#android:style/Theme.Holo.Light.NoActionBar"
...>
BaseActivity:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTheme(R.style.GreenHoloTheme);
}
This way helps me to avoid ActionBar when application start!
The solutions already posted came with the sideffect, that the first .show() call did not animate the ActionBar for me.
I got another nice solution, which fixed that:
Create a transparent drawable - something like that:
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid
android:color="#00000000" />
</shape>
Set the actual actionbar background to a invisible custom view which you set on the actionbar:
getSupportActionBar().setCustomView(R.layout.actionbar_custom_layout);
getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_SHOW_HOME | ActionBar.DISPLAY_SHOW_TITLE);
Set the transparent background for the actionbar in onCreate:
getSupportActionBar().setBackgroundDrawable(getResources().getDrawable(R.drawable.background_transparent));
Imortant: Don't hide the actionbar immediately in onCreate, but with a little delay later - e.g. when the layout is finished with creation:
getWindow().getDecorView().getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
getSupportActionBar().hide();
}
});
Before your first .show() call set the custom view visible:
_actionbarRoot.setVisibility(View.VISIBLE);
getSupportActionBar().show();
In case you have null because you are using the support library, instead of getActionBar() you need to call getSupportActionBar().
Just add this to your MainActivity in the onCreate function.
val actionBar = supportActionBar?.apply { hide() }
Put your splash screen in a separate activity and use startActivityForResult from your main activity's onCreate method to display it. This works because, according to the docs:
As a special case, if you call startActivityForResult() with a requestCode >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your activity, then your window will not be displayed until a result is returned back from the started activity. This is to avoid visible flickering when redirecting to another activity.
You should probably do this only if the argument to onCreate is null (indicating a fresh launch of your activity, as opposed to a restart due to a configuration change).
I had still error with null pointer and finally it helped when I called first getWindow().requestFeature() and then super.onCreate()
public void onCreate(Bundle savedInstanceState) {
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
super.onCreate(savedInstanceState);
getActionBar().show();
Just add this in your styles.xml
<item name="android:windowNoTitle">true</item>
Actually, you could simply set splash Activity with NoActionBar
and set your main activity with action bar.
The best way to do this is two make the first activity as blank activity and the content you want to put and then after some time fire another activity.
By following this way you can make the first activity as your splash screen without action bar or anything.
Heres my first activity
package com.superoriginal.rootashadnasim.syllabus;
import android.content.Intent;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class first_screen extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first_screen);
final Handler h=new Handler();
h.postDelayed(new Runnable() {
#Override
public void run() {
Intent intent=new Intent(getApplicationContext(),DrawerChooseBranchMainActivity.class);
startActivity(intent);
}
},2000);
}
}
After that you can put any of your activity as first activity
If you want no action bar in any screen then just add this in your styles
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
Android studio provide in build template for full screen, if you use Android studio you can follow below step to implement full screen activity.
Done. Android studio did your job, now you can check code for full screen.
this is the best way I used
Go to java file, after onCreate:
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Take instance of Action Bar
// using getSupportActionBar and
// if it is not Null
// then call hide function
if (getSupportActionBar() != null) {
getSupportActionBar().hide();
}
}
I realise that posting links are not the best way to do things, but I highly recommend you read the following documentation from Google themselves. This is the official android doc on how to control your system ui (things like actionbar, nav bar etc). Unfortunately the info is too much to post directly, but after reading this you will understand exactly how to show and hide features no matter what version you are developing for, its so simple!
Incase the link ever changes, it can be found under the official android documentation under training -> getting started -> Best practices for user interface -> managing the system ui
https://developer.android.com/training/system-ui/index.html
you can use this :
getSupportActionBar().hide(); if it doesn't work try this one :
getActionBar().hide();
if above doesn't work try like this :
in your directory = res/values/style.xml , open style.xml -> there is attribute parent change to parent="Theme.AppCompat.Light.DarkActionBar"
if all of it doesn't work too. i don't know anymore. but for me it works.

setContentView gives an exception

In my android app I set
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN );
Then my touch screen event doesnt’ work any more.
Further Explaining,
I have a button and onClick it changes the contentView by setContentView(R.layout.choose_player);.
It works fine. But if you take the focus to the button by the trackball(making it yellow) and tap on it, it gives the exception.
java.lang.IllegalArgumentException: parameter must be a descendant of this view
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main1);
}
public void onClick(View v) {
setContentView(R.layout.main2);
}
i cant understand properly first. I think you may be using setContentView method multiple times. one is to set the layout on the view. another one inside the click event. right? that not works. use that method once to set the layout. on click event you have to do your tasks on the views inside the layout. hope it helps. please post some code snippets for the perfect answers.
you use setContentView only once in your 'onCreate' method, in general for the main window (one Activity = 1 view)
in your case you should probably change your Background..

How to set the mainfest.xml to remove the default label

Any one can share the mainfest.xml.
How to set it? then can remove the label..?
Thanks very much
Your question isn't very clear, but assuming you're asking about displaying the name of your application: There's a line in the < application > section that has "#string/app_name" in it, which you could remove. Not sure that's a good idea though. Alternatively you might be asking how to remove the title bar at the top of an application. If so, use
requestWindowFeature(Window.FEATURE_NO_TITLE);
If by removing the default label, you mean removing the title bar, you can use the following in your onCreate
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
}

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