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To add a dependency on CardView, you must add the Google Maven repository to your project. Read Google's Maven repository for more information. For more information about dependencies, see Add build dependencies.
CardView : it is provided by the old support libraries and it is deprecated.
Is it possible to implement a click listener on each button without using a RecyclerView? Yes, You can use cardview as menu item but you should use layout instead of menu. You need to implement individual click for them.
Customized CardView First, add a CardView dependency to the application-level build. gradle file. Then create a drawable background for the cards. For that, create a new drawable resource file inside the drawable folder.
I wanted to try out the new toys that google gave us and I've run into some trouble.
Here is my build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 'android-L'
buildToolsVersion "20.0.0"
defaultConfig {
applicationId "com.tod.android.lpreviewtest"
minSdkVersion 'L'
targetSdkVersion 'L'
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:cardview-v7:+'
}
Now my layout:
<RelativeLayout 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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MyActivity">
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_view"
android:layout_gravity="center"
android:layout_width="200dp"
android:layout_height="200dp"
card_view:cardCornerRadius="4dp">
<TextView
android:id="@+id/info_text"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v7.widget.CardView>
</RelativeLayout>
When I switch to screen preview in android studio, I get a render error:
Rendering Problems The following classes could not be instantiated:
- android.support.v7.widget.CardView (Open Class, Show Exception)
Exception Details java.lang.ClassFormatError: Illegal field name "CardView.Dark"
in class android/support/v7/cardview/R$style at
java.lang.ClassLoader.defineClass1(ClassLoader.java:-2) at
java.lang.ClassLoader.defineClass(ClassLoader.java:792) at
java.lang.ClassLoader.defineClass(ClassLoader.java:635) at
java.lang.ClassLoader.loadClass(ClassLoader.java:424) at
java.lang.ClassLoader.loadClass(ClassLoader.java:411) at
java.lang.ClassLoader.loadClass(ClassLoader.java:357) at
android.support.v7.widget.CardView.initialize(CardView.java:69) at
android.support.v7.widget.CardView.<init>(CardView.java:60) at
java.lang.reflect.Constructor.newInstance(Constructor.java:526) at
android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:802) at
android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64) at
android.view.LayoutInflater.rInflate(LayoutInflater.java:778) at
android.view.LayoutInflater.inflate(LayoutInflater.java:500) at
android.view.LayoutInflater.inflate(LayoutInflater.java:381)
I tried ignoring the error and running the app in an avd and while everything compiles fine, no cardview appears in the layout. Please help!
P.s. I'm using the new Android Studio beta 0.8.0
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