Android 无法通过绑定传递字符串值
这个问题对我来说很严重,我需要有人帮我解决这个问题。实际上,我正在创建一个RSS提要应用程序,将导航抽屉和查看页面选项卡活动结合起来。我想将字符串值从一个片段传递到另一个片段。事情是这样的。它在导航抽屉活动中正常工作,但在与视图寻呼机结合后,字符串没有通过bundle传递到其他片段,我找不到错误,因为它没有显示任何错误 这是我传来的线Android 无法通过绑定传递字符串值,android,string,android-fragments,bundle,Android,String,Android Fragments,Bundle,这个问题对我来说很严重,我需要有人帮我解决这个问题。实际上,我正在创建一个RSS提要应用程序,将导航抽屉和查看页面选项卡活动结合起来。我想将字符串值从一个片段传递到另一个片段。事情是这样的。它在导航抽屉活动中正常工作,但在与视图寻呼机结合后,字符串没有通过bundle传递到其他片段,我找不到错误,因为它没有显示任何错误 这是我传来的线 public class RssFragment extends Fragment implements OnItemClickListener { priv
public class RssFragment extends Fragment implements OnItemClickListener {
private ProgressBar progressBar;
private ListView listView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_first, container, false);
progressBar = (ProgressBar) view.findViewById(R.id.progressBar);
listView = (ListView) view.findViewById(R.id.listView);
listView.setOnItemClickListener(this);
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
startService();
}
private void startService() {
Intent intent = new Intent(getActivity(), RssService.class);
getActivity().startService(intent);
}
/**
* Once the {@link RssService} finishes its task, the result is sent to this BroadcastReceiver
*/
private BroadcastReceiver resultReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
progressBar.setVisibility(View.GONE);
List<RssItem> items = (List<RssItem>) intent.getSerializableExtra(RssService.ITEMS);
if (items != null) {
RssAdapter adapter = new RssAdapter(getActivity(), items);
listView.setAdapter(adapter);
} else {
Toast.makeText(getActivity(), "An error occurred while downloading the rss feed.",
Toast.LENGTH_LONG).show();
}
}
};
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
RssAdapter adapter = (RssAdapter) parent.getAdapter();
RssItem item = (RssItem) adapter.getItem(position);
Uri uri = Uri.parse(item.getDescription());
String string;
string=uri.toString();
result Des_1=new result();
FragmentManager fragmentManager1 =getActivity().getSupportFragmentManager();
fragmentManager1.beginTransaction().replace(R.id.content_main_layout_frame,Des_1 ).addToBackStack("fragBack").commit();
result ldf = new result();
Bundle args = new Bundle();
args.putString("YourKey", string);
ldf.setArguments(args);
getFragmentManager().beginTransaction().add(R.id.content_main_layout_frame, ldf).commit();
}
@Override
public void onStart() {
super.onStart();
IntentFilter intentFilter = new IntentFilter(RssService.ACTION_RSS_PARSED);
LocalBroadcastManager.getInstance(getActivity()).registerReceiver(resultReceiver, intentFilter);
}
@Override
public void onStop() {
super.onStop();
LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(resultReceiver);
}
}
我很高兴有人能弄明白。我重复一遍,它是有效的,但现在不行了
这是另一个片段
public class datafragment extends Fragment {
View view;
ViewPager viewPager;
TabLayout tabLayout;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
view= inflater.inflate(R.layout.sample,container,false);
viewPager = (ViewPager) view.findViewById(R.id.viewpager);
viewPager.setAdapter(new sliderAdapter(getChildFragmentManager()));
tabLayout = (TabLayout) view.findViewById(R.id.sliding_tabs);
tabLayout.post(new Runnable() {
@Override
public void run() {
tabLayout.setupWithViewPager(viewPager);
}
});
return view;
}
private class sliderAdapter extends FragmentPagerAdapter{
final String tabs[]={"tab1", "tab2","tab3"};
public sliderAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position){
case 0:
fragment = new RssFragment();
break;
case 1:
fragment = new RssFragment();
break;
case 2:
fragment = new RssFragment();
break;
}
return fragment;
}
@Override
public int getCount() {
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
return tabs[position];
}
}
}
删除事务并添加以下代码
ldf = new result();
Bundle bundle = new Bundle();
FragmentTransaction fragmentTransaction =
getActivity().getSupportFragmentManager().beginTransaction();
bundle.putString("key","value");
ldf.setArguments(bundle);
fragmentTransaction.addToBackStack("fragBack");
fragmentTransaction.add(R.id.content_main_layout_frame, ldf);
fragmentTransaction.commit();
如果有帮助,请告诉我 删除事务并添加以下代码
ldf = new result();
Bundle bundle = new Bundle();
FragmentTransaction fragmentTransaction =
getActivity().getSupportFragmentManager().beginTransaction();
bundle.putString("key","value");
ldf.setArguments(bundle);
fragmentTransaction.addToBackStack("fragBack");
fragmentTransaction.add(R.id.content_main_layout_frame, ldf);
fragmentTransaction.commit();
如果有帮助,请告诉我 试试这个
public class result extends Fragment {
public result() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootview=inflater.inflate(R.layout.fragment_result,container,false);
TextView textView=(TextView)rootview.findViewById(R.id.distext);
if(savedInstanceState!= null) {
String value = savedInstanceState.getString("YourKey");
textView.setText(value);
// Toast.makeText(getActivity(), value,
// Toast.LENGTH_LONG).show();
}
return rootview;
}
}
试试这个
public class result extends Fragment {
public result() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootview=inflater.inflate(R.layout.fragment_result,container,false);
TextView textView=(TextView)rootview.findViewById(R.id.distext);
if(savedInstanceState!= null) {
String value = savedInstanceState.getString("YourKey");
textView.setText(value);
// Toast.makeText(getActivity(), value,
// Toast.LENGTH_LONG).show();
}
return rootview;
}
}
试试下面这个
ldf = new result();
Bundle bundle = new Bundle();
FragmentTransaction fragmentTransaction =
getActivity().getSupportFragmentManager().beginTransaction();
bundle.putString("key","value");
ldf.setArguments(bundle);
fragmentTransaction.addToBackStack("fragBack");
fragmentTransaction.replace(R.id.content_main_layout_frame, ldf);
fragmentTransaction.commit();
试试下面这个
ldf = new result();
Bundle bundle = new Bundle();
FragmentTransaction fragmentTransaction =
getActivity().getSupportFragmentManager().beginTransaction();
bundle.putString("key","value");
ldf.setArguments(bundle);
fragmentTransaction.addToBackStack("fragBack");
fragmentTransaction.replace(R.id.content_main_layout_frame, ldf);
fragmentTransaction.commit();
首先,将字符串对象的名称从字符串更改为任何其他名称请更改………首先,将字符串对象的名称从字符串更改为任何其他名称请更改………您能告诉我为什么会发生吗?因为有两个连续的事务,第一个事务,即,带out bundle params的将被执行并打开片段。之后的代码无效。你能告诉我为什么会发生吗?因为有两个事务是顺序进行的,第一个事务即没有bundle参数的事务被执行并打开片段。之后的代码无效。