EDIT of 01/02/2016: Bug should be resolved by applying the code provided by Android Team: https://stackoverflow.com/a/35132144/3397345, see accepted answer below.
EDIT of 27/01/2016: Bug still not resolved in v23.1.1. Solutions provided until now don't give transparent status bar (which is the purpose of this layout) or are too complex. A new screen-record of the bug available here: https://www.youtube.com/watch?v=76IxhlUx8MQ
EDIT of 23/07/2015: Support Design Library v22.2.1 didn't fix :-( Also this happens on toolbar quick return on MainActivity!
EDIT of 28/07/2015: Linked question: CoordinatorLayout status bar padding disappears during fragment transactions
From example repository https://github.com/chrisbanes/cheesesquare I've implemented the ViewPager on Detail Activity. It works, but the StatusBar disappears from 2nd page as you see in the picture only in Lollipop devices, Any idea?
I use android:fitsSystemWindows="true" but it does work only on first page :-(
activity_detail_viewpager.xml
if I put here fitsSystemWindows, StatusBar is not transparent anymore, but it works (status bar padding is not lost). But I would like it transparent!
<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/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:overScrollMode="ifContentScrolls"/>
</android.support.design.widget.CoordinatorLayout>
activity_detail_fragment.xml
<CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
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="#dimen/detail_backdrop_height"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp">
<ImageView
android:id="#+id/back_item"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="24dp">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/card_margin">
...
</android.support.v7.widget.CardView>
...
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_margin="#dimen/fab_margin"
android:clickable="true"
android:src="#drawable/ic_discuss"
app:layout_anchor="#id/appbar"
app:layout_anchorGravity="bottom|end"
app:borderWidth="0dp"/>
</android.support.design.widget.CoordinatorLayout>
style.xml v21
<resources>
<style name="AppTheme" parent="AppTheme.Base">
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">#android:color/transparent</item>
</style>
</resources>
Solution proposed by Android Team in the answer of my reported defect. This code should finally work.
ViewPager mViewPager;
ViewCompat.setOnApplyWindowInsetsListener(mViewPager,
new OnApplyWindowInsetsListener() {
#Override
public WindowInsetsCompat onApplyWindowInsets(View v,
WindowInsetsCompat insets) {
insets = ViewCompat.onApplyWindowInsets(v, insets);
if (insets.isConsumed()) {
return insets;
}
boolean consumed = false;
for (int i = 0, count = mViewPager.getChildCount(); i < count; i++) {
ViewCompat.dispatchApplyWindowInsets(mViewPager.getChildAt(i), insets);
if (insets.isConsumed()) {
consumed = true;
}
}
return consumed ? insets.consumeSystemWindowInsets() : insets;
}
});
Like sidecarcat, I ran into a similar issue (using v23.1.1).
I post here a workaround by using the code of sidecarcat and add some code to remove superflous padding in some cases.
// in onCreateView: adjust toolbar padding
final int initialToolbarHeight = mToolbar.getLayoutParams().height;
final int initialStatusBarHeight = getStatusBarHeight();
mToolbar.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
int[] locToolbar = new int[2];
mToolbar.getLocationOnScreen(locToolbar);
int yToolbar = locToolbar[1];
int topPaddingToolbar = mToolbar.getPaddingTop();
if (isAdded()) {
//normal case : system status bar padding on toolbar : yToolbar = initialStatusBarHeight && topPaddingToolbar = 0
//abnormal case : no system status bar padding on toolbar -> toolbar behind status bar => add custom padding
if (yToolbar != initialStatusBarHeight && topPaddingToolbar == 0) {
mToolbar.setPadding(0, initialStatusBarHeight, 0, 0);
mToolbar.getLayoutParams().height = initialToolbarHeight + initialStatusBarHeight;
}
//abnormal case : system status bar padding and custom padding on toolbar -> toolbar with padding too large => remove custom padding
else if (yToolbar == initialStatusBarHeight && topPaddingToolbar == initialStatusBarHeight) {
mToolbar.setPadding(0, 0, 0, 0);
mToolbar.getLayoutParams().height = initialToolbarHeight;
}
}
}
});
return mRootView;
}
public int getStatusBarHeight() {
int result = 0;
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
result = getResources().getDimensionPixelSize(resourceId);
}
return result;
}
I ran into a similar issue (using v23.0.1). In my case, the problem occurs on the first page as well. The workaround I settled on was to adjust the padding and height of the toolbar when the fragment is created.
// in onCreateView: adjust toolbar padding
Toolbar toolbar = (Toolbar) mRootView.findViewById(R.id.toolbar);
toolbar.setPadding(0, getStatusBarHeight(), 0, 0);
toolbar.getLayoutParams().height = toolbar.getLayoutParams().height + getStatusBarHeight();
return mRootView;
}
public int getStatusBarHeight() {
int result = 0;
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
result = getResources().getDimensionPixelSize(resourceId);
}
return result;
}
Seems the solution for this is simple
You have
android:fitsSystemWindows="true"
In the fragment CoordinateLayoutView
remove it from here and put in the Activity's root view.
This should now all work
Related
I have a fragment where I want to use CollapsingToolbarLayout
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="350dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleTextAppearance="#android:color/transparent"
android:fitsSystemWindows="true">
<ImageView
android:id="#+id/header_image"
android:layout_width="match_parent"
android:layout_height="350dp"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
android:contentDescription="#string/app_name"
android:src="#drawable/festival"
app:layout_collapseMode="parallax"/>
<include layout="#+id/custom_layout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
//...custom view /> ...
When collapsing_toolbar is expanded I want to have the image displayed and when collapsed I want to have only the #+id/custom_layout. The custom_layout is a relative layout with a textview and an imageview.
I want to have exactly the same behavior as if I had the following:
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:layout_collapseMode="pin" />
instead of the custom layout.
Why this is not working?
Even though the CollapsingToobarLayout is expanded i see both the ImageView and the custom layout.
!!Note I do have an activity with a toolbar defined. I don't want to touch that part of the code. When I m scrolling up the fragment, I want the #+id/custom_layout to be aligned below the existing toolbar defined in the activity.
I add the following in onViewCreated() method inside the fragment:
RelativeLayout headerLayout = view.findViewById(R.id.custom_layout);
AppBarLayout mAppBarLayout = view.findViewById(R.id.app_bar_layout);
mAppBarLayout.addOnOffsetChangedListener(new
AppBarLayout.OnOffsetChangedListener() {
#Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
if (verticalOffset == 0) {
//fully expanded
headerLayout.setVisibility(View.GONE)
} else {
//fully collapsed
headerLayout.setVisibility(View.Visible);
//ISSUE HERE!!!: Only when ImageView has height = 0, the headerLayout pops up.
//!!The transition is not smoothly.
// I would like the headerLayout to be visible when the ImageView height reaches the headerLayout height.
}
}
});
You can do it programatically.In your activity add this listener in OnCreate() method
ImageView headerImage = view.findViewById(R.id.header_image);
AppBarLayout mAppBarLayout = view.findViewById(R.id.app_bar_layout);
mAppBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
boolean isShow = false;
int scrollRange = -1;
#Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
if (scrollRange == -1) {
scrollRange = appBarLayout.getTotalScrollRange();
}
if (scrollRange + verticalOffset == 0) {
isShow = true;
headerImage.setVisibility(View.VISIBLE);
} else if (isShow) {
isShow = false;
headerImage.setVisibility(View.GONE);
}
}
});
EDIT to why you can't get the same effect as having the actual Toolbar
The docs state CollapsingToolbarLayout is a wrapper for Toolbar which implements a collapsing app bar. It is designed to be used as a direct child of a AppBarLayout. So it was designed to be used with Toolbar by Google. You can simple create some sort of a workaround to use your custom layout
You can hide the imageView when the collapsingToolbar is collapsed and show again when it is expanded. In your activity class, use onOffsetChangedListener :
AppBarLayout appBarLayout = (AppBarLayout) view.findViewById(R.id.app_bar_layout);
appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
#Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
if (Math.abs(verticalOffset) == appBarLayout.getTotalScrollRange()) {
// If collapsed, then do this
imageViewHeaderImage.setVisibility(View.GONE);
} else if (verticalOffset == 0) {
// If expanded, then do this
imageViewHeaderImage.setVisibility(View.VISIBLE);
}
}
}););
To test kotlin with anko DSL I decided to start a new proyect in last android studio ide (2.1.3), using kotlin plugin (1.0.3) and latest anko library (0.9)
I used the default proyect Navigation Drawer Activity, so I just had to convert the main xml to anko.
This is the xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
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:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<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.support.design.widget.AppBarLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
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>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior" >
<TextView
android:text="Hello World!"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header_main"
app:menu="#menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
And it is working perfectly, as you can see here:
With anko, I tried to copy every detail from the xml, getting this code:
class MainActivityUi: AnkoComponent<MainActivity> {
override fun createView(ui: AnkoContext<MainActivity>) = with(ui) {
drawerLayout {
id = R.id.drawer_layout
fitsSystemWindows = true
coordinatorLayout {
appBarLayout(R.style.AppTheme_AppBarOverlay) {
toolbar {
id = R.id.toolbar
backgroundColor = colorAttr(R.attr.colorPrimary)
popupTheme = R.style.AppTheme_PopupOverlay
}.lparams(height=dimenAttr(R.attr.actionBarSize),width=matchParent)
}.lparams(width=matchParent)
relativeLayout {
padding = dip(16)
textView("Hello World!")
}.lparams(height=matchParent,width=matchParent) {
behavior = AppBarLayout.ScrollingViewBehavior()
}
}.lparams(height=matchParent,width=matchParent)
navigationView {
id = R.id.nav_view
inflateHeaderView(R.layout.nav_header_main)
inflateMenu(R.menu.activity_main_drawer)
}.lparams(height=matchParent) {
gravity = Gravity.START
fitsSystemWindows = true
}
}
}
}
And instead, I'm getting this white statusbar:
The only changes I did was in the MainActivity change the setContentView(R.layout.activity_main), to MainActivityUi.setContentView(this).
So, my question is, why is this happening when they are the same views and layouts? and how can I fix that?
EDIT: I'm using the default proyect that it's created when in Android Studio you choose new proyect, and then you choose DrawerNavigationActivity. If in setContentView I choose to show the xml's view, the statusbar is blue (first screenshot), but if I choose to show the anko's view I get the white statusbar.
In both cases, I'm using same themes, colors, etc, and when using the xml layout, everything is working perfectly, so it must be an anko's problem
Try to do
window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
inside onCreate()
it worked for me
Reference
EDIT:
Also My Code
drawerLayout {
lparams(width = matchParent, height = matchParent)
coordinatorLayout {
setPadding(0, dip(24), 0, 0)
appBarLayout {
toolbar {
backgroundColor = primaryColor
setTitleTextColor(primaryColorText)
}.lparams(width = matchParent, height = dip(toolbar_size))
}.lparams(width = matchParent, height = dip(toolbar_size))
}.lparams(width = matchParent, height = matchParent)
navigationView {
}.lparams(width = dip(302), height = matchParent) {
gravity = Gravity.START
}
}
EDIT 2:
By looking at the source code of androidx, they add some code to handle "fitsSystemWindows". We can copy and paste to archive the same effect. Although Anko is dead, it still useful to create Drawerlayout programmatically (and with any other DSL library)
if (ViewCompat.getFitsSystemWindows(this)) {
if (Build.VERSION.SDK_INT >= 21) {
setOnApplyWindowInsetsListener(new View.OnApplyWindowInsetsListener() {
#Override
public WindowInsets onApplyWindowInsets(View view, WindowInsets insets) {
final DrawerLayout drawerLayout = (DrawerLayout) view;
drawerLayout.setChildInsets(insets, insets.getSystemWindowInsetTop() > 0);
return insets.consumeSystemWindowInsets();
}
});
setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
final TypedArray a = context.obtainStyledAttributes(THEME_ATTRS);
try {
mStatusBarBackground = a.getDrawable(0);
} finally {
a.recycle();
}
} else {
mStatusBarBackground = null;
}
}
You're wrong thinking that the status bar is transparent by default.
According to this image
taken from Android Developers Reference. Check: https://developer.android.com/training/material/theme.html
the status bar color depends on what you have defined in colors.xml or styles.xml in values folder as colorPrimaryDark, so it's not transparent.
Your problem is not white color in status bar which is correct for transparency, but not enough knowledge of using themes in Android applications.
EDIT: Changing status bar color (Java):
Window window = activity.getWindow();
// clear FLAG_TRANSLUCENT_STATUS flag:
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
// add FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS flag to the window
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
// finally change the color
window.setStatusBarColor(activity.getResources().getColor(R.color.my_statusbar_color));
or
public void setStatusBarColor(View statusBar,int color){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
Window w = getWindow();
w.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
//status bar height
int actionBarHeight = getActionBarHeight();
int statusBarHeight = getStatusBarHeight();
//action bar height
statusBar.getLayoutParams().height = actionBarHeight + statusBarHeight;
statusBar.setBackgroundColor(color);
}
}
Hope it will help
It is not your statusbar color issue. Correct me if I am wrong, I believe you are using the Cyanogenmod OS 13.0 edition by the looks of your battery symbol. Switch it back to the default theme in your themes section. Then report back if the issue still persists with your colors.xml file.
Refer this link here for your Kotlin translucent status bar issue.
https://github.com/fython/MaterialStatusBarCompat
I am using the latest version of the design support library (23.1.1) and I am facing an issue when I use the CollapsingToolbarLayout with the enterAlways scroll flag. Basically, when you scroll back up, the view appears but if also leaves a empty white space at top.
Normal View:
After scrolling down and then back up (notice the whitespace below status bar):
MainActivity.java
public class MainActivity extends AppCompatActivity {
AppBarLayout appBar;
View expandedView;
Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
setTitle("");
initViews();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private void initViews() {
appBar = (AppBarLayout) findViewById(R.id.appBar);
appBar.addOnOffsetChangedListener(appBarOffsetChangedListener);
expandedView = findViewById(R.id.expandedView);
RecyclerView rv = (RecyclerView) findViewById(R.id.rv);
rv.setLayoutManager(new LinearLayoutManager(this));
rv.setAdapter(new DummyAdapter());
}
private AppBarLayout.OnOffsetChangedListener appBarOffsetChangedListener = new AppBarLayout.OnOffsetChangedListener() {
#Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
int maxOffset = appBar.getTotalScrollRange();
verticalOffset = Math.abs(verticalOffset);
if(verticalOffset > maxOffset)
return;
float percentage = verticalOffset / (float) maxOffset;
if(expandedView!=null)
expandedView.setAlpha(1 - percentage);
}
};
}
activity_main.xml
<?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:fitsSystemWindows="true"
tools:context="com.media2359.fragmenttoolbarchange.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBar"
android:layout_width="match_parent"
android:layout_height="180dp"
android:background="#color/colorPrimaryDark"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsingToolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed|enterAlways">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin">
</android.support.v7.widget.Toolbar>
<RelativeLayout
android:id="#+id/expandedView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:paddingLeft="#dimen/toolbar_text_margin_left"
android:paddingTop="#dimen/toolbar_text_margin_top"
tools:background="#color/colorPrimaryDark">
<TextView
android:id="#+id/tvName"
style="#style/TextAppearance.AppCompat.Headline"
android:layout_width="#dimen/toolbar_text_width"
android:layout_height="wrap_content"
android:text="Hello" />
<TextView
android:id="#+id/tvTime"
style="#style/TextAppearance.AppCompat.Body1"
android:layout_width="#dimen/toolbar_text_width"
android:layout_height="wrap_content"
android:layout_below="#id/tvName"
android:layout_marginTop="7dp"
android:text="04 Feb, Tuesday evening" />
</RelativeLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/rv"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:listitem="#layout/item_dummy" />
</android.support.design.widget.CoordinatorLayout>
Using enterAlwaysCollapsed along with enterAlways avoids this issue but I want the full view to come back because in the actual app, the expanded section is way smaller.
Another thing that I have noticed is that, the height of the whitespace is equal to the height to the toolbar.
EDIT 1
I replaced exitUntilCollapsed with snap and then there wasn't any white space but then the toolbar doesn't pin and scrolls away
EDIT 2
Looks like this is an issue with the Design Library: CollapsingToolbarLayout enterAlways not supported
Temporary Workaround: Cheesesquare: enterAlways produces wrong layout
Perhaps that's because of:
enterAlways
Which the codepath/android_guides says:
enterAlways: The view will become visible when scrolling up. This flag
is useful in cases when scrolling from the bottom of a list and
wanting to expose the Toolbar as soon as scrolling up takes place.
Maybe you wanna try this: (standard way)
app:layout_scrollFlags="scroll|exitUntilCollapsed"
Honestly, I didn't see somebody is using enterAlways in CollapsingToolbarLayout in my whole development life.Especially, with those two flags:
app:layout_scrollFlags="scroll|exitUntilCollapsed|enterAlways"
Otherwise, It could be a bug and needs the Google's staffs to answer about it.
I have a quite simple layout and I animate the showing/hiding of the toolbars with the appended functions. I'm using AppCompat and Toolbars...
PROBLEM
One person reported that the top toolbar is never shown. Any ideas why? What could be the reason? It's working fine on my phone and others...
Function
public void showHideToolbar(boolean forceHide, boolean animate)
{
L.d(this, "showHideToolbar: " + mShowToolbar);
toolbar.clearAnimation();
toolbar2.clearAnimation();
if (mShowToolbar || forceHide)
{
if (animate) {
toolbar.animate().translationY(-toolbar.getBottom()).setInterpolator(new AccelerateInterpolator()).start();
toolbar2.animate().translationY(toolbar2.getBottom()).setInterpolator(new AccelerateInterpolator()).start();
}
else
{
toolbar.setTranslationY(-toolbar.getBottom());
toolbar2.setTranslationY(toolbar2.getBottom());
}
mShowToolbar = false;
}
else
{
if (animate) {
toolbar.animate().translationY(0).setInterpolator(new DecelerateInterpolator()).start();
toolbar2.animate().translationY(0).setInterpolator(new DecelerateInterpolator()).start();
}
else
{
toolbar.setTranslationY(0);
toolbar2.setTranslationY(0);
}
mShowToolbar = true;
}
}
Layout
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/flMain"
android:background="?attr/main_background_color"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
app:theme="?actionBarThemeStyle"
app:popupTheme="?actionBarPopupThemeStyle" />
<android.support.v4.view
android:id="#+id/vpSlides"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar2"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/bottom_bar_background"
android:elevation="0dp"
android:layout_alignParentBottom="true"
android:gravity="top|start"
app:theme="?actionBarThemeStyle"
app:popupTheme="?actionBarPopupThemeStyle" >
</android.support.v7.widget.Toolbar>
</RelativeLayout>
It seems like, even if you make a toolbar to an actionbar, you have to respect layout ordering in the xml. setSupportActionBar won't bring the action bar on top of the main layout...
So the simple solution was to reorder the toolbar to being under the content...
I never ad problems yet as normally I show the content underneath the toolbar, here I didn't want to that and therefore faced the problem
I am trying to achieve an effect like WhatsApp has, where the Toolbar (when scrolled) will clip into view magnetlike, or out of view magnetlike.
What I have im my MainActivity XML:
DrawerLayout - Base Layout
CoordinatorLayout - Layout for the Appbar and Toolbar and Tabs
AppBarLayout - For holding Toolbar and Tabs
Toolbar - has THIS flag: app:layout_scrollFlags="scroll|enterAlways"
SlidingTabLayout - Displays tabs
ViewPager - For tabs
RecyclerView - For coordinatorlayout
Now dont get me wrong, it works, when I scroll down the toolbar gets pushed out of view but say I stop scrolling halfway, then the toolbar just sits there half hidden out of view and the other half in view..
How can I approach solving this problem, as I want it to either snap out of view or into view.
This feature has been added in 23.1.0 version of android support library.
From release notes:
Added edge snapping support to the AppBarLayout class by adding the
SCROLL_FLAG_SNAP constant. When scrolling ends, if the view is only
partially visible, the view is snapped and scrolled to its closest
edge.
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|enterAlways|snap" />
-----
-----
For more info: http://android-developers.blogspot.in/2015/10/android-support-library-231.html
EDIT: as of support 23.1.0 this is no longer needed. See this answer instead.
One possible way to solve this is customizing the Behavior set to your AppBarLayout.
<android.support.design.widget.AppBarLayout
app:layout_behavior="com.myapp.AppBarLayoutSnapBehavior"
android:layout_width="match_parent"
android:layout_height="wrap_content">
...
Your AppBarLayoutSnapBehavior would change the default behavior of AppBarLayout.Behavior, by adding the snap logic when the scroll stops.
Hopefully, the code below is self explanatory.
package com.myapp;
public class AppBarLayoutSnapBehavior extends AppBarLayout.Behavior {
private ValueAnimator mAnimator;
private boolean mNestedScrollStarted = false;
public AppBarLayoutSnapBehavior(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child,
View directTargetChild, View target, int nestedScrollAxes) {
mNestedScrollStarted = super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
if (mNestedScrollStarted && mAnimator != null) {
mAnimator.cancel();
}
return mNestedScrollStarted;
}
#Override
public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target) {
super.onStopNestedScroll(coordinatorLayout, child, target);
if (!mNestedScrollStarted) {
return;
}
mNestedScrollStarted = false;
int scrollRange = child.getTotalScrollRange();
int topOffset = getTopAndBottomOffset();
if (topOffset <= -scrollRange || topOffset >= 0) {
// Already fully visible or fully invisible
return;
}
if (topOffset < -(scrollRange / 2f)) {
// Snap up (to fully invisible)
animateOffsetTo(-scrollRange);
} else {
// Snap down (to fully visible)
animateOffsetTo(0);
}
}
private void animateOffsetTo(int offset) {
if (mAnimator == null) {
mAnimator = new ValueAnimator();
mAnimator.setInterpolator(new DecelerateInterpolator());
mAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator animation) {
setTopAndBottomOffset((int) animation.getAnimatedValue());
}
});
} else {
mAnimator.cancel();
}
mAnimator.setIntValues(getTopAndBottomOffset(), offset);
mAnimator.start();
}
}
The only thing is, the scroll view (in my case a RecyclerView) snaps along with the Toolbar. I actually like it this way, but I'm not sure that's what you want.
I just hided action bar layout in main activity and set span for CollapsingToolbarLayout.
it works for me.
in main activity
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().hide();
CollapsingToolbarLayout collapsingToolbar =
(CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
collapsingToolbar.setTitle("Name");
loadBackdrop();
and layout_activity_main
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_backdrop_height"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|snap"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp">
<ImageView
android:id="#+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>