Change AppBarLayout theme programmatically - android

First I set AppBarLayout theme via xml:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/MyTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/MyTheme.PopupOverlay"
app:titleTextAppearance="#style/MyTheme.Toolbar.Title" />
where #style/MyTheme.AppBarOverlay contains:
<style name="MyTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
<item name="colorPrimary">#drawable/toolbar_background</item>
</style>
But then in some scenarios I want to change it programmatically without change the Theme of the activity (only the Theme of the AppBarLayout).
I have tried these two ways without success:
First:
ActionBar actionBar = getSupportActionBar();
actionBar.getThemedContext().setTheme(R.style.MyTheme_AppBarOverlay_2);
Second:
AppBarLayout mAppBar = (AppBarLayout) findViewById(R.id.appbar); mAppBar.getContext().setTheme(R.style.MyTheme_AppBarOverlay_2);

Changing themes after inflation is not possible with Android views. You'll have to change each property the theme defines individually. You may work around this by using Compose TopAppBar, since Compose widgets react to theme changes.

Related

Translucent status bar and toolbar

I'd like to integrate something like this:
And I've done it like this, but I can't seem to put the imageview below the toolbar. Without the toolbar, I can make it under the status bar, but combining these two are impossible.
Here's my layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:fitsSystemWindows="true"
tools:context="com.project.android.PhotoActivity">
<android.support.v7.widget.Toolbar
android:id="#+id/photo_tl"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#59000000"
tools:ignore="UnusedAttribute" />
<ImageView
android:id="#+id/photo_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:scaleType="fitStart" />
</LinearLayout>
In my activity, I've done the following:
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
I've also declared an styles-v21.xml file:
<style name="Project.Photo" parent="Project.Light">
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">#59000000</item>
</style>
And set it as default style for PhotoActivity.
I've already tried putting the toolbar in a FrameLayout, but doing that my toolbar simply hides, like this:
Thanks in advance.
Got that fixed, but toolbar is overlapping the status bar. Is there anyway to fix the padding? If I use android:fitsSystemWindows="true", status bar isn't translucent anymore.
I would remove the Toolbar from your layout and use an implementation of an ActionBar from the AppCompat.Theme:
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
</style>
Then, I would create a new style for the semi-transparent ActionBar (in values/styles.xml:
<style name="AppTheme.Transparent" parent="AppTheme">
<item name="windowActionBarOverlay">true</item>
</style>
And in v21/styles.xml:
<style name="AppTheme.Transparent" parent="AppTheme">
<item name="windowActionBarOverlay">true</item>
<item name="android:windowTranslucentStatus">true</item>
</style>
I assume, that your Activity extends AppCompatActivity so then in onCreate() you can call:
For enabling a back button:
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
For setting your translucent color:
getSupportActionBar().setBackgroundDrawable(new ColorDrawable(ContextCompat.getColor(this, R.color.yourTranslucentColor)));
For removing your ActionBar title:
getSupportActionBar().setDisplayShowTitleEnabled(false);
What is more, I would change your root LinearLayout to CoordinatorLayout as it gives you more control over your layouts (it's a more powerful FrameLayout).
The color which I used is:
<color name="yourTranslucentColor">#29000000</color>
Of course you should remember to apply this theme to your Activity in the AndroidManifest.xml:
<activity
android:name=".ui.activity.YourActivity"
android:theme="#style/AppTheme.Transparent">
</activity>
By doing all these steps you should get something like this:
Please let me know, if it works for you.
As you said,
"I've already tried putting the toolbar in a FrameLayout, but doing that my toolbar simply hides, like this:".
The problem with this is the order of adding childView in FrameLayout, you added Toolbar as first child and after that you added ImageView. this is why image hides the toolbar. Instead, the order of views inside FameLayout should be like this
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.project.android.PhotoActivity">
<ImageView
android:id="#+id/photo_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:scaleType="fitStart" />
<android.support.v7.widget.Toolbar
android:id="#+id/photo_tl"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#59000000"
tools:ignore="UnusedAttribute" />
</FrameLayout>
Also for API level >=19 ,you can add this attribute in style.xml file to make statusBar transparent
<item name="android:windowTranslucentStatus">true</item>
For making content behind statusBar use this link
https://developer.android.com/training/system-ui/status.html#behind
Use code below
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/coordinator_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="300dp"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="#color/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:expandedTitleTextAppearance="#style/AppTheme.CollapsingToolbarLayoutExpandedTextStyle"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/iv_backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:theme="#style/YourTheme"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<!-- Rest of your view-->
</android.support.design.widget.CoordinatorLayout>
LinearLayout will automatically place the ImageView below the Toolbar.
Try using a RelativeLayout instead.
Dont treat status bar as something separate from your app. Image is coming below the toolbar because you have used LinearLayout. Had you used RelativeLayout, your image would be starting at the same height as toolbar.
Now for making the statusbar transparent and for everything to start from under the statusbar use the following.
<style name="AppTheme.TranslucentStatusBar" >
<item name="android:windowTranslucentStatus">true</item>
<item name="android:windowBackground">#android:color/transparent</item>
</style>
Use the above style for your activity and everything starts from under the statusbar. Now for the toolbar, you can increase the height of the toolbar by adding the height of the statusbar as padding to toolbar. This can be done as follows:
toolbarContainer.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
toolbarContainer.setPadding(0, frame.top, 0, 0);
}
});
You can set a color to statusbar and use the same color with AlphaTransparency on Toolbar.
getWindow().setStatusBarColor(ContextCompat.getColor(this, android.R.color.transparent));
Now you control everything including the statusbar and the toolbar.
Got that fixed, but toolbar is overlapping the status bar. Is there anyway to fix the padding? If I use android:fitsSystemWindows="true", status bar isn't translucent anymore.
I've recently written a post about WindowInsets, you may check it out. I think it would resolve your issue.
Long story short - what you have to do is to pass window insets only to Toolbar via ViewCompat.setOnApplyWindowInsetListener API. But the parent of your Toolbar should pass the window insets. In your case that won't happen, because by default LinearLayout and family layouts won't do that, you have to subclass and override onApplyWindowInsets method.
I suggest you to read the article, where everything is described more precisely.
TLDR; You have to wrap the toolbar in a LinearLayout.
What I did to make it work was similar to #Akhilesh Kumar's approach but I wrapped the toolbar in a LinearLayout which fixed the toolbar overlapping. I also put the fitsSystemWindows to true in that LinearLayout.
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.project.android.PhotoActivity">
<ImageView
android:id="#+id/photo_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:scaleType="fitStart"/>
<LinearLayout
android:id="#+id/content_card_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:fitsSystemWindows="true"
>
<android.support.v7.widget.Toolbar
android:id="#+id/photo_tl"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#59000000"
tools:ignore="UnusedAttribute"/>
</LinearLayout>
</FrameLayout>
I hope it helps.
just change the toolbar height to wrap_content:
<android.support.v7.widget.Toolbar
android:id="#+id/photo_tl"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#59000000"
tools:ignore="UnusedAttribute" />

Remove shadow toolbar below actionbar in blank activity

I've created a new project with a new blank activity using Android Studio and I'm trying to remove the shadow below the toolbar in >=API21. I've tried many things.
This works for < API21
<item name="android:windowContentOverlay">#null</item>
This doesn't work for me in phone with >=API21:
getSupportActionBar().setElevation(0);
<item name="android:elevation">0dp</item>
I don't know what else I can try. Any help is appreciated.
EDIT: I've tried everything from other questions like this but nothing worked.
As #Vipul Asri said, I had to add app:elevation="0dp" but I was adding it to the wrong place. This works:
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="android.teechart.steema.com.androiddemo.DashboardWebAnalytics">
<android.support.design.widget.AppBarLayout
app:elevation="0dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_dashboard_web_analytics" />
</android.support.design.widget.CoordinatorLayout>
I was adding it in android.support.v7.widget.Toolbar but the correct place was in android.support.design.widget.AppBarLayout.
This shadow is part of windowContentOverlay on APIs below LOLLIPOP (on LOLLIPOP it's #null).
When you work with Toolbar widget the toolbar isn't part of window decor anymore so the shadow starts at the top of the window over the toolbar instead of below it (so you want the windowContentOverlay to be #null). Additionally you need to add an extra empty View below the toolbar pre-LOLLIPOP with its background set to a vertical shadow drawable (8dp tall gradient from #20000000 to #00000000 works best). On LOLLIPOP you can set 8dp elevation on the toolbar instead.

Support Toolbar title/menu vertical centre

I'm new to android development and I'm working on an app with ActionBar and Tabs. Recently I switched to the new support library Toolbar but the title of the toolbar (ActionBar) isn't vertically centred, while the action buttons are correctly placed.
Title image
The same problem occurs with the first MenuItem in the bar (it's moved up a little bit). Menu image
My activity extends the AppCompatActivty and the layout looks like this:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/action_bar_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
app:theme="#style/ActionBarTheme"/>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
app:tabGravity="fill"
app:tabMaxWidth="0dp"
app:tabMode="fixed"/>
<com.myApp.app.views.widgets.ViewPager
android:id="#+id/fragmentPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"/>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
and the style:
<style name="ActionBarTheme" parent="Widget.AppCompat.Toolbar">
<item name="android:textColorPrimary">#color/colorPrimaryDark</item>
<item name="colorControlNormal">#color/colorPrimaryDark</item>
<item name="android:background">#color/colorPrimary</item>
</style>
Could someone help me fix this issue? I've searched for a solution but found nothing.
P.S. They were correctly placed as I was using the default action bar
You should use android:theme rather than app:theme here:
android:theme="#style/ActionBarTheme"
Your style should derive from the action bar overlay:
<style name="ActionBarTheme" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
...
</style>
Consider just using the ActionBar theme directly to start to isolate the problem.

android toolbar popupTheme vs theme

Often I see this declaration of Toolbar in layout files:
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
Why are there two attributes relating theming: theme and popupTheme?
What are the purposes of each of them?
popupTheme
Specifies the theme to use when inflating popup menus. By default, uses the same theme as the Toolbar itself.
theme
It is simply the theme of Toolbar.

Set elevation to View automatically the elevation of the Toolbar, how to change this?

I'm using a theme that will not show the ActionBar by default:
<style name="AppTheme" parent="Theme.AppCompat">
<item name="windowActionBar">false</item>
<item name="android:textColorPrimary">#FFFFFF</item>
</style>
However, I'm replacing it with Toolbar in xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
... >
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_VenueDetail"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/MainColor" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="300dp"
android:background="#color/MainColor"
android:elevation="#dimen/default_elevation"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
in OnCreate:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_VenueDetail);
setSupportActionBar(toolbar);
The expected result is a flat Toolbar and a shadow below the LinearLayout, which is exactly what preview in Android Studio shows me:
However in real life, the Toolbar has also taken effect:
I want to just put the shadow below another View and keep my Toolbar flat, how to achieve this? Is this even possible?
Do not set the toolbar as a support actionbar. You can still set navigation button, title and inflate menu on the toolbar but the elevation shouldn't be applied unless you set it explicitly in code or in the activity layout.
Having said that, make sure that the removing the elevation is not against the principles of material design.

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