我将其添加到我的 gradle 文件中:
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:design:23.0.1'
}
这是我的 MainActivity.java :
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new OneFragment(), "ONE");
adapter.addFragment(new TwoFragment(), "TWO");
adapter.addFragment(new ThreeFragment(), "THREE");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
它给出了这个错误:
java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v7/internal/widget/TintManager;
在这一行:
tabLayout.setupWithViewPager(viewPager);
为什么我会收到此错误?我怎样才能解决这个问题?谢谢。
最佳答案
所有支持库必须是相同版本。尝试将 appcompat-v7 和 support-v4 更改为 23.0.1 或设计为 23.1.1。
注意:支持库和设计库的版本应该相同。
关于java - Android Studio 上的 NoClassDefFoundError,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37982732/