androiddesignsupport | 易学教程

Snackbar action text color not changing

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问题 I want to change the action text color for my snackbar, but it is not working for some reason. I use the following code to display a snackbar: Snackbar.make(findViewById(R.id.root), "text", Snackbar.LENGTH_LONG).setActionTextColor(R.color.yellow).setAction("OK", new View.OnClickListener() { @Override public void onClick(View view) { } }).show(); 回答1: The argument of setActionTextColor is the int that represents the color, not the resource ID. Instead of this: .setActionTextColor(R.color

Single tab in TabLayout is not covering the entire width

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I have created a view pager with TabLayout. Now the issue is if I have 2 or more tabs then everything is fine. But if I am having only one tab then it is not covering the entire screen width. PFA the xml layout <android.support.design.widget.TabLayout android:id="@+id/sliding_tabs" android:layout_width="match_parent" android:layout_height="wrap_content" app:tabGravity="fill" app:tabMode="fixed" style="@style/TabLayout" android:fillViewport="true" android:layout_below="@id/ssrToolbar"/> <android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="match_parent" android

How to use Android AppBarLayout, Toolbar and TabLayout with fragments

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问题 I have activity with NavigationDrawer and AppBarLayout with Toolbar. Unfortunately when I am using TabLayout in child fragment I see shadow between toolbar and TabLayout. Is it possible display shadow below TabLayout only? I do not want to move TabLayout to my activity because I'm using it only in one fragment. I can see few solutions for this problem: disable elevation on Toolbar & TabLaout ( don't like it) remove toolbar from activity and move it into fragment Do you have any ideas how to

SearchView is invisible with collapseActionView parameter since 24.1 design library

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问题 I encountered a problem since I updated the Android Design Library from 23.4.0 to 24.1.1 My SearchView was defined like this : <item android:id="@+id/action_search" android:icon="@drawable/ic_search" android:title="@string/title_action_search" app:actionViewClass="android.support.v7.widget.SearchView" app:showAsAction="collapseActionView|ifRoom" /> But my SearchView input became invisible (I can write in it, but the text, or hint does not appear). I described it in the following picture with

findViewById(R.id.icon) returns null

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R.id.icon is already defined in Android API level 1. However, I am getting an NPE in a Android Design Support Library internal code while accessing an imageview inflated using R.id.icon . NOTE: I am not targetting Oreo as my targetSdk is currently 25 . Here is the stacktrace: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.widget.ImageView.getLayoutParams()' on a null object reference at android.support.design.internal.BottomNavigationItemView.setChecked(BottomNavigationItemView.java:172) at android.support.design

Switch in Navigation drawer item with Design Support Library on Android

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问题 I need to put Switch inside item in navigation drawer. I'm using new design support library, but I cannot find if it is posibble at all. When using android:checkable item is just full selected and that is not what I wish. This is screenshot of what I really want. Is that possible to achieve that? 回答1: Your menu item for the navigation drawer: <item android:id="@+id/nav_item1" android:icon="@drawable/ic_item1" android:title="item1" app:actionLayout="@layout/layout_switch" /> and the layout for

“Hidden” Toolbar visible under status bar

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Using the CoordinatorLayout to hide my toolbar when scrolling down. The toolbar thinks it's hidden - But it's not. Does anyone understand why this is happening? Note: I have the status bar set to translucent to have proper material drawers. Making the status bar a solid color is not the solution I'm looking for - Unless of course that is how this was intended to be used. I try to set statusbar color as the primarydark, then statusbar can not be transparent when drawer is opened otherwise toolbar comes out again. After two days work, I found that if I remove the android:fitsSystemWindows="true"

What is the difference between AppBarLayout vs Toolbar?

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问题 I want to include Toolbar in my app, but the design support library just came out with AppBarLayout , so I just need clarification on what the difference is and when I would use one over the other. 回答1: The AppBarLayout is used to achieve various scrolling behaviors such as collapse, flex space, and quick return. http://www.google.com/design/spec/patterns/scrolling-techniques.html http://android-developers.blogspot.com/2015/05/android-design-support-library.html 回答2: If you want just to

inflate menu in CollapsingToolbarLayout issue

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I am using the design support library`s CollapsingToolbarLayout.My issue is i am not able to inflate the menu action icon in toolbar. I am using the below code to create CollapsingToolbarLayout. <android.support.design.widget.AppBarLayout android:id="@+id/app_bar_layout" android:layout_width="match_parent" android:layout_height="240dp"> <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="?attr/colorPrimary" app

How to dim background when using the BottomSheet from the support library?

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How can the background be dimmed just like it is shown here ? I've set it up normally using the CoordinatorLayout and the BottomSheetBehavior . This will simply show a bottom sheet. public class MyBottomSheet extends BottomSheetDialogFragment { private static final String TAG = "MyBottomSheet"; @NonNull @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { final BottomSheetDialog dialog = (BottomSheetDialog) super.onCreateDialog(savedInstanceState); final View view = View.inflate(getContext(), R.layout.my_custom_view, null); dialog.setContentView(view); behavior =