嗨，我正试图将一个活动更改为一个片段，以便将其添加到一个滑动布局中，我想我已经差不多完成了（除非有人看到我的代码中有任何其他错误），但是我在任何地方都找不到解决问题的方法，它说“getintent（）对于softwarepagefragment”类型是未定义的这真的很新鲜，而且已经在android中编写了一周左右了？？？
package com.learn2crack.tab;
import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
interface OnHeadlineSelectedListener {
/** Called by HeadlinesFragment when a list item is selected */
public void onArticleSelected(int position);
}
public class SoftwarePageFragment extends Fragment implements OnHeadlineSelectedListener {
@Override
public View onCreateView(LayoutInflater inflater,ViewGroup container, Bundle savedInstanceState){
return inflater.inflate(R.layout.rooms_view, container, false);
//@Override
//public void onStart() {
// super.onStart();
if (getView().findViewById(R.id.fragment_container) != null) {
// However, if we're being restored from a previous state,
// then we don't need to do anything and should return or else
// we could end up with overlapping fragments.
if (savedInstanceState != null) {
return container;
}
// Create an instance of ExampleFragment
HeadlinesFragment firstFragment = new HeadlinesFragment();
// In case this activity was started with special instructions from an Intent,
// pass the Intent's extras to the fragment as arguments
Bundle bundle = new Bundle();
bundle.putString("key", value);//you can use putInt or putBoolean etc
firstFragment.setArguments(bundle);
// Add the fragment to the 'fragment_container' FrameLayout
getFragmentManager().beginTransaction()
.add(R.id.fragment_container, firstFragment).commit();
}
}
public void onArticleSelected(int position) {
// The user selected the headline of an article from the HeadlinesFragment
// Capture the article fragment from the activity layout
ArticleFragment articleFrag = (ArticleFragment)
getFragmentManager().findFragmentById(R.id.Software);
if (articleFrag != null) {
// If article frag is available, we're in two-pane layout...
// Call a method in the ArticleFragment to update its content
articleFrag.updateArticleView(position);
} else {
// If the frag is not available, we're in the one-pane layout and must swap frags...
// Create fragment and give it an argument for the selected article
ArticleFragment newFragment = new ArticleFragment();
Bundle args = new Bundle();
args.putInt(ArticleFragment.ARG_POSITION, position);
newFragment.setArguments(args);
FragmentTransaction transaction = getFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack so the user can navigate back
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
}
}
public class ArticleFragment extends Fragment {
final static String ARG_POSITION = "position";
int mCurrentPosition = -1;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// If activity recreated (such as from screen rotate), restore
// the previous article selection set by onSaveInstanceState().
// This is primarily necessary when in the two-pane layout.
if (savedInstanceState != null) {
mCurrentPosition = savedInstanceState.getInt(ARG_POSITION);
}
// Inflate the layout for this fragment
return inflater.inflate(R.layout.sofware_view, container, false);
}
@Override
public void onStart() {
super.onStart();
// During startup, check if there are arguments passed to the fragment.
// onStart is a good place to do this because the layout has already been
// applied to the fragment at this point so we can safely call the method
// below that sets the article text.
Bundle args = getArguments();
if (args != null) {
// Set article based on argument passed in
updateArticleView(args.getInt(ARG_POSITION));
} else if (mCurrentPosition != -1) {
// Set article based on saved instance state defined during onCreateView
updateArticleView(mCurrentPosition);
}
}
public void updateArticleView(int position) {
TextView article = (TextView) getActivity().findViewById(R.id.Software);
article.setText(Rooms[position]);
mCurrentPosition = position;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
// Save the current article selection in case we need to recreate the fragment
outState.putInt(ARG_POSITION, mCurrentPosition);
}
}
public class HeadlinesFragment extends ListFragment {
OnHeadlineSelectedListener mCallback;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// We need to use a different list item layout for devices older than Honeycomb
int layout = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ?
android.R.layout.simple_list_item_activated_1 : android.R.layout.simple_list_item_1;
// Create an array adapter for the list view, using the Ipsum headlines array
setListAdapter(new ArrayAdapter<String>(getActivity(), layout, Software));
}
@Override
public void onStart() {
super.onStart();
// When in two-pane layout, set the listview to highlight the selected list item
// (We do this during onStart because at the point the listview is available.)
if (getFragmentManager().findFragmentById(R.id.Software) != null) {
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
// This makes sure that the container activity has implemented
// the callback interface. If not, it throws an exception.
try {
mCallback = (OnHeadlineSelectedListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnHeadlineSelectedListener");
}
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
// Notify the parent activity of selected item
mCallback.onArticleSelected(position);
// Set the item as checked to be highlighted when in two-pane layout
getListView().setItemChecked(position, true);
}
}
ArrayAdapter<String> adapter;
static String Software[] = {
"3D Studio Max 2014",
"Adobe Creative Suite 6",
"Agilent Agent",
"Android SDK",
"Audacity",
"C Map Tools",
"Cedar and Easy 68k",
"Context",
"CryEngine 3",
"Derive V5.0",
"Dreamweaver CS6",
"Eclipse",
"Face Modeller",
"Flash CS6",
"Image J",
"Linux",
"Matlab R2012A (Computing Toolbase)",
"Matlab R2012A (Maths)",
"Microsoft Project",
"Microsoft SQL Sever Lite",
"MinecraftEDU",
"MiniTab 16",
"MonoGame",
"NetBeans 7.3.1",
"Office 2013",
"Oracle Client",
"Photoshop CS6",
"Premiere CS6",
"Python 3.3.2",
"QT 5.1",
"R-Studio",
"Rational Architect",
"Steam",
"SWI Pro Log",
"Unreal UDK",
"Visio 2012",
"Visual Studio 2012",
"Win A&D 7 Desktop",
"Windows Mobile SDK",
"Weka ML",
"XNA Game Studio"};
static String Rooms []= { "MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
"MEA 27\n MEA 34\n",
};
}
最佳答案
在片段中使用getActivity（），如下所示：
Bundle args = getActivity().getIntent().getExtras();
String value= args.getString("key");
关于android - 如何使getIntent()。getExtras()在 fragment 中工作，“类型的getIntent未定义”，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/22195082/