I keep getting this error and this leads to a crash of my application. Trying to implement a new v4 swipe update layout. I updated the + sdk support library. What is the problem?
Could not find class 'android.support.v4.widget.SwipeRefreshLayout' referring to method ...... onCreate
import android.support.v4.widget.SwipeRefreshLayout; ... private SwipeRefreshLayout swipeLayout; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.home_page_list); swipeLayout = (SwipeRefreshLayout) findViewById(R.id.container); swipeLayout.setColorScheme(android.R.color.holo_blue_bright, android.R.color.holo_green_light, android.R.color.holo_orange_light, android.R.color.holo_red_light); swipeLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { swipeLayout.setRefreshing(false); } });
XML
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.devrim.ythaber.HomeActivity" tools:ignore="MergeRootFrame" > <ScrollView android:layout_width="match_parent" android:layout_height="wrap_content" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <ImageView android:id="@+id/thumb" android:layout_width="100dp" android:layout_height="100dp" android:contentDescription="@string/app_name" /> <RelativeLayout android:id="@+id/relativeLayout1" android:layout_width="wrap_content" android:layout_height="290dp" android:layout_centerVertical="true" android:layout_marginLeft="5dp" android:layout_marginRight="5dp" android:orientation="vertical" > </RelativeLayout> <TextView android:id="@+id/title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="left" android:ellipsize="end" android:fontFamily="sans-serif-light" android:maxLines="2" android:shadowColor="@color/dropshadow" android:shadowDx="2" android:shadowDy="2" android:shadowRadius="2" android:text="@string/title" android:textAllCaps="false" android:textAppearance="?android:attr/textAppearanceSmallPopupMenu" android:textColor="@color/titlecolour" android:textSize="35sp" android:textStyle="italic" android:typeface="sans" > </TextView> <TextView android:id="@+id/category" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@+id/title" android:ellipsize="end" android:fontFamily="sans-serif-light" android:gravity="right" android:maxLines="1" android:paddingRight="5dp" android:paddingTop="10dp" android:textAppearance="?android:attr/textAppearanceSmallPopupMenu" android:textColor="@color/catcolour" android:textSize="17sp" android:textStyle="italic" android:typeface="sans" > </TextView> </LinearLayout> </ScrollView> </android.support.v4.widget.SwipeRefreshLayout>
Finish logcat:
05-01 21:31:27.390: W/dalvikvm(11452): VFY: unable to find class referenced in signature (Landroid/support/v4/widget/SwipeRefreshLayout;) 05-01 21:31:27.390: E/dalvikvm(11452): Could not find class 'android.support.v4.widget.SwipeRefreshLayout', referenced from method com.devrim.ythaber.HomeActivity.onCreate 05-01 21:31:27.390: W/dalvikvm(11452): VFY: unable to resolve check-cast 619 (Landroid/support/v4/widget/SwipeRefreshLayout;) in Lcom/devrim/ythaber/HomeActivity; 05-01 21:31:27.390: W/dalvikvm(11452): Link of class 'Lcom/devrim/ythaber/HomeActivity$1;' failed 05-01 21:31:27.440: W/dalvikvm(11452): threadid=1: thread exiting with uncaught exception (group=0x4166ee18) 05-01 21:31:27.440: E/AndroidRuntime(11452): FATAL EXCEPTION: main 05-01 21:31:27.440: E/AndroidRuntime(11452): Process: com.devrim.ythaber, PID: 11452 05-01 21:31:27.440: E/AndroidRuntime(11452): java.lang.NoClassDefFoundError: android.support.v4.widget.SwipeRefreshLayout 05-01 21:31:27.440: E/AndroidRuntime(11452): at com.devrim.ythaber.HomeActivity.onCreate(HomeActivity.java:56) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.app.Activity.performCreate(Activity.java:5312) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2552) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.app.ActivityThread.access$800(ActivityThread.java:156) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.os.Handler.dispatchMessage(Handler.java:102) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.os.Looper.loop(Looper.java:157) 05-01 21:31:27.440: E/AndroidRuntime(11452): at android.app.ActivityThread.main(ActivityThread.java:5872) 05-01 21:31:27.440: E/AndroidRuntime(11452): at java.lang.reflect.Method.invokeNative(Native Method) 05-01 21:31:27.440: E/AndroidRuntime(11452): at java.lang.reflect.Method.invoke(Method.java:515) 05-01 21:31:27.440: E/AndroidRuntime(11452): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1069) 05-01 21:31:27.440: E/AndroidRuntime(11452): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:885)
source share