Android AppCompat 和 Fragment 不起作用
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原文地址: http://stackoverflow.com/questions/21873114/
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AppCompat and Fragment not working
提问by prashantwosti
02-19 11:49:17.369: E/AndroidRuntime(4209): java.lang.NoClassDefFoundError: com.slidingmenus.fragments.HomeFragment
02-19 11:49:17.369: E/AndroidRuntime(4209): at com.slidingmenus.MainActivity.displayCategoryView(MainActivity.java:242)
02-19 11:49:17.369: E/AndroidRuntime(4209): at com.slidingmenus.MainActivity.onCreate(MainActivity.java:121)
Tried each and every steps suggested in stack overflow but they didn't help.
尝试了堆栈溢出中建议的每个步骤，但没有帮助。
It works without an error in 4.0+ but in 2.3.x devices its giving java.lang.NoClassDefFoundError in
它在 4.0+ 中没有错误，但在 2.3.x 设备中它给出了 java.lang.NoClassDefFoundError
line 242: fragment = new HomeFragment();
My imports from fragments are:
我从片段的进口是：
import android.app.Fragment;
import android.app.FragmentManager;
and I'm using:
我正在使用：
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.frame_container, fragment).commit();
Here is my home fragment:
这是我的家片段：
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class HomeFragment extends Fragment {
public HomeFragment(){}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.layout_main_fragment,container, false);
return rootView;
}
}
Spent whole morning already trying to solve this. still no luck. Any help is highly appreciated.
整个上午都在试图解决这个问题。仍然没有运气。任何帮助都受到高度赞赏。
Thanks
谢谢
回答by Raghunandan
You should use Fragmentfrom the support library.
您应该Fragment从支持库中使用。
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
You also need to use getSupportFragmentManager()and since you are using AppCompatyour activity must extend ActionbarActivity.
您还需要使用getSupportFragmentManager()并且因为您正在使用AppCompat您的活动必须扩展ActionbarActivity.
FragmentManager fragmentManager = getSupportFragmentManager();
Update:
更新：
ActionBarActivityis deprecated use AppCompatActivityfrom support library. Don't forget to update your support repository to the latest.
ActionBarActivity不推荐使用AppCompatActivity支持库。不要忘记将您的支持存储库更新到最新版本。
回答by LONGMAN
Try this code Import:
试试这个代码导入：
import android.support.v4.app.Fragment;
And use
并使用
Fragment fragment = new HomeFragment();
android.support.v4.app.FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.layout.layout_main_fragment, fragment).commit();
回答by M D
I faced the same issue and resolved it by import support libraryand used
我遇到了同样的问题并通过导入支持库解决了它并使用了
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
Instead
反而
import android.app.Fragment;
import android.app.FragmentManager;
