androiddesignsupport

问题 Fatal Exception: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mypackage/com.mypackage.activities.HomeActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.ContentFrameLayout.setDecorPadding(int, int, int, int)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2721) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2782) at android.app

问题 I have simple Login page with some textview and edittex and i set static text to textview and hint to edittext from string.xml working fine. But Now i am receiving that strings(which i set form stirng.xml as i explained above) form webservices and i have to set webservice string. Issue is i didn't set any id to that login screen elements(edittext and textview). Update I have AppCompatTextView like below in my XML <androidx.appcompat.widget.AppCompatTextView android:layout_width="match_parent"

问题 I have simple Login page with some textview and edittex and i set static text to textview and hint to edittext from string.xml working fine. But Now i am receiving that strings(which i set form stirng.xml as i explained above) form webservices and i have to set webservice string. Issue is i didn't set any id to that login screen elements(edittext and textview). Update I have AppCompatTextView like below in my XML <androidx.appcompat.widget.AppCompatTextView android:layout_width="match_parent"

问题 I just updated the support design library from 22.2.1 to 23.0.1 and immediately noticed the presence of a scrollbar in the navigation drawer. I tried to use android:scrollbars="none" But that didn't fix it. Is there any other way to remove the scrollbar? 回答1: Unfortunately the scrollbar is set in the NavigationMenuView layout not in the NavigationView , for this reason if you use android:scrollbars="none" the scrollbar is still present. You can do it programmatically calling this method:

问题 I just updated the support design library from 22.2.1 to 23.0.1 and immediately noticed the presence of a scrollbar in the navigation drawer. I tried to use android:scrollbars="none" But that didn't fix it. Is there any other way to remove the scrollbar? 回答1: Unfortunately the scrollbar is set in the NavigationMenuView layout not in the NavigationView , for this reason if you use android:scrollbars="none" the scrollbar is still present. You can do it programmatically calling this method:

问题 I'm having trouble integrating the Design Support Library into my application. For some reason, the toolbar collapses with the CollapsingToolbarLayout, and does not leave it pinned like in the Cheesesquare example by Chris Banes. https://github.com/chrisbanes/cheesesquare I didn't do anything different to my layout. In fact, I replaced my styles with his, and dropped in his layout. I wonder if using Toolbar, instead of android.support.v7.widget.Toolbar is causing this. Here is the problem.

问题 I am using the android design library TabLayout in that how can I get the current selected item tab position. ViewPager pager = (ViewPager) view.findViewById(R.id.pager); MyPagerAdapter adapter = new MyPagerAdapter(getChildFragmentManager()); pager.setAdapter(adapter); tabLayout.setupWithViewPager(pager); 回答1: As of version 22.2.1 of the Support library the TabLayout has a method getSelectedTabPosition . Source 1 | Source 2 回答2: You can call ViewPager's getCurrentItem() to get the index of

问题 Using Design Support Library 22.2.1, with the following View hierarchy: <DrawerLayout android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true"> <CoordinatorLayout android:layout_width="match_parent" android:layout_height="match_parent"> <AppBarLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <Toolbar android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" /> <TabLayout android:layout_width

问题 I am using below layout to use collapsing toolbar effect but not able to expand toolbar.I want to expand the toolbar as given here for collapsing toolbar effect. https://guides.codepath.com/android/Handling-Scrolls-with-CoordinatorLayout <android.support.design.widget.CoordinatorLayout android:id="@+id/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=

问题 I have a question about Navigation Drawer Header Section Items. Actually I want to change a TextView in HeaderLayout programatically, here are codes: drawer menu: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android"> <group android:checkableBehavior="all"> <item android:id="@+id/navItem1" android:icon="@drawable/ic_home_drawer" android:title="A"/> <item android:id="@+id/navItem2" android:icon="@drawable/ic_gallery_drawer" android:title="B"/>