Menu
I am following this tutorial to create swipe tabs. But I get the above error.
My gradle dependencies sturucture
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:22.2.0'
}
Here are my files. MainActivity.java
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("Tab 1")); //this line gives error
tabLayout.addTab(tabLayout.newTab().setText("Tab 2")); //this line gives error
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
PageAdapter pageAdapter = new PageAdapter(getSupportFragmentManager());
viewPager.setAdapter(pageAdapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
}
And my PageAdapter.java file is
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
public class PageAdapter extends FragmentStatePagerAdapter {
public PageAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new InstaPicSwipeTab();
case 1:
return new SongsDownloadSwipeTab();
}
return null;
}
@Override
public int getCount() {
return 2;
}
}
And this is what LogCat is giving me
12-08 00:27:24.452 11770-11770/com.example.suraj.freewee E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.suraj.freewee, PID: 11770
java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v7/internal/widget/TintManager;
at android.support.design.widget.TabLayout$TabView.<init>(TabLayout.java:1041)
at android.support.design.widget.TabLayout.createTabView(TabLayout.java:582)
at android.support.design.widget.TabLayout.addTabView(TabLayout.java:616)
at android.support.design.widget.TabLayout.addTab(TabLayout.java:334)
at android.support.design.widget.TabLayout.addTab(TabLayout.java:309)
at com.example.suraj.freewee.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v7.internal.widget.TintManager" on path: DexPathList[[zip file "/data/app/com.example.suraj.freewee-1/base.apk"],nativeLibraryDirectories=[/data/app/com.example.suraj.freewee-1/lib/x86, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.support.design.widget.TabLayout$TabView.<init>(TabLayout.java:1041)
at android.support.design.widget.TabLayout.createTabView(TabLayout.java:582)
at android.support.design.widget.TabLayout.addTabView(TabLayout.java:616)
at android.support.design.widget.TabLayout.addTab(TabLayout.java:334)
at android.support.design.widget.TabLayout.addTab(TabLayout.java:309)
at com.example.suraj.freewee.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Suppressed: java.lang.ClassNotFoundException: android.support.v7.internal.widget.TintManager
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 19 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
How to solve this error?
815
lang. NoClassDefFoundError, which means the Class Loader file responsible for dynamically loading classes can not find the . class file. So to remove this error, you should set your classpath to the location where your Class Loader is present.
java. lang. NoClassDefFoundError is runtime error thrown when a required class is not found in the classpath and hence JVM is unable to load it into memory.
Java runtime throws ClassNotFoundException while trying to load a class at runtime only and the name was provided during runtime. In the case of NoClassDefFoundError, the class was present at compile time, but Java runtime could not find it in Java classpath during runtime.
The version of support library and design library should be the same.
I changed my
compile 'com.android.support:appcompat-v7:23.1.1'
to
compile 'com.android.support:appcompat-v7:23.0.1'
and issue fixed for me.
Note: my compileSdkVersion and buildToolVersion is below compileSdkVersion 23 buildToolsVersion "23.0.1"
143
this comes up when a class exists at compile time but not at runtime, right click on the app go to open module settings select dependencies click on the + and select 'library dependency' select design and click ok, wait for gradle to run, re-run your app, am sure that will fix it.
your top level gradle will need to look like this
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '23.0.2'
defaultConfig {
applicationId "aubry.chromio.com.dressup"
minSdkVersion 15
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile fileTree(dir: 'libs', include: ['*.java'])
compile fileTree(dir: 'libs', include: ['*.so'])
compile 'com.android.support:appcompat-v7:23.1.0'
compile 'com.android.support:design:23.1.0'
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
