当我在array adapter和fragment之间传递参数时，字符串用户的值不会在日志中打印...为什么????
这是我的代码：
ARRAY ADAPTER：
public abstract class PlanetAdapter extends ArrayAdapter<Planet> implements CompoundButton.OnCheckedChangeListener
{
private List<Planet> planetList;
private Context context ;
ArrayList<Birra> objects;
public boolean Checked;
private Integer[] imageId;
String ciao;
/* public PlanetAdapter(Context context) {
super(context, R.layout.single_listview_item);
}
*/
public PlanetAdapter(FragmentManager fm,List<Planet> planetList, Context context,Integer[] imageId) {
super(context, R.layout.single_listview_item,planetList);
this.fm=fm;
this.planetList = planetList;
this.context = context;
this.imageId = imageId;
}
public class PlanetHolder {
public TextView planetName;
public TextView distView;
public TextView valuta;
public CheckBox chkBox;
public EditText edit;
public TextView caratteristica;
public boolean checked;
public TextView id;
public ImageView imageView;
public Spinner spinner;
}
@Override
public int getCount() {
return planetList.size();
}
@Override
public Planet getItem(int position) {
return planetList.get(position);
}
@Override
public View getView(final int position, final View convertView, ViewGroup parent) {
View row = convertView;
PlanetHolder holder = null;
if (row == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
row = inflater.inflate(R.layout.single_listview_item, parent, false);
holder = new PlanetHolder();
holder.planetName = (TextView) row.findViewById(R.id.name);
holder.distView = (TextView) row.findViewById(R.id.dist);
holder.valuta = (TextView) row.findViewById(R.id.valuta);
holder.chkBox = (CheckBox) row.findViewById(R.id.chk_box);
holder.edit = (EditText) row.findViewById(R.id.editText);
holder.spinner = (Spinner) row.findViewById(R.id.simpleSpinner);
holder.caratteristica=(TextView) row.findViewById(R.id.caratteristica);
holder.imageView = (ImageView) row.findViewById(R.id.ivImage);
holder.edit.setVisibility(View.GONE);
holder.edit.setEnabled(false);
holder.spinner.setVisibility(View.GONE);
// holder.id = (TextView) row.findViewById(R.id.id);
row.setTag(holder);
} else {
holder = (PlanetHolder) row.getTag();
}
final Planet p = planetList.get(position);
holder.imageView.setImageResource(imageId[position]);
holder.planetName.setText(p.getName());
holder.distView.setText("" + p.getDistance());
holder.valuta.setText("" + p.getValuta());
holder.chkBox.setChecked(p.isSelected());
holder.chkBox.setTag(p);
holder.caratteristica.setText(p.getCaratteristica());
holder.edit.setEnabled(false);
SharedPreferences states = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
boolean isChecked = states.getBoolean("holder.chkBox" + holder.planetName.getText().toString(), false);
System.out.println(isChecked);
if (isChecked) {
holder.chkBox.setChecked(true);
holder.edit.setVisibility(View.VISIBLE);
holder.edit.setEnabled(true);
holder.spinner.setVisibility(View.VISIBLE);
SharedPreferences statess = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
String string = statess.getString("finalHolder.edit" + holder.planetName.getText().toString(), holder.edit.getText().toString().trim());
holder.edit.setText(string);
} else {
holder.chkBox.setChecked(false);
holder.edit.setVisibility(View.GONE);
holder.edit.setEnabled(false);
holder.spinner.setVisibility(View.GONE);
}
holder.chkBox.setOnCheckedChangeListener(PlanetAdapter.this);
// final BirraHolder finalHolder = birraHolder;
final PlanetHolder finalHolder = holder;
holder.chkBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (finalHolder.chkBox.isChecked()) {
finalHolder.edit.setVisibility(View.VISIBLE);
finalHolder.edit.setEnabled(true);
finalHolder.spinner.setVisibility(View.VISIBLE);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
getContext(),
R.array.country_arrays,
android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
//finalHolder.spinner.setAdapter(adapter);
finalHolder.spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
finalHolder.spinner.setSelection(position);
String selState = finalHolder.spinner.getSelectedItem().toString();
System.out.println(selState);
Toast.makeText(
getContext(),
"Clicked on Planet: " + selState + "", Toast.LENGTH_SHORT).show();
Fragment fragment = new Fragment();
Bundle bundle = new Bundle();
bundle.putString("key", selState);
Log.i("BUNDLE", bundle.toString());
//fragment.setArguments(bundle);
//frag.setArguments(bundleUp);
String tag = fragment.getClass().getName();
FragmentManager fm = getActivity().getSupportFragmentManager();
fragment.setArguments(bundle);
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.fragmentContainer, fragment);
ft.addToBackStack(tag);
ft.commit();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SharedPreferences states = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = states.edit();
editor.putBoolean("holder.chkBox" + finalHolder.planetName.getText().toString(), true);
editor.commit();
finalHolder.edit.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
p.setQuantità(finalHolder.edit.getText().toString().trim());
SharedPreferences states = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = states.edit();
editor.putString("finalHolder.edit" + finalHolder.planetName.getText().toString(), finalHolder.edit.getText().toString().trim());
editor.commit();
}
});
/* SharedPreferences states = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = states.edit();
editor.putBoolean("holder.chkBox" + finalHolder.planetName.getText().toString(), true);
editor.commit();*/
//Utility.putPizzaItem(p);
//Utility.getPizzaItem(p);
} else {
finalHolder.edit.setVisibility(View.GONE);
finalHolder.edit.setEnabled(false);
finalHolder.edit.setText("");
finalHolder.spinner.setVisibility(View.GONE);
}
}
});
/*holder.chkBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (finalHolder.chkBox.isChecked()) {
finalHolder.edit.setVisibility(View.VISIBLE);
finalHolder.edit.setEnabled(true);
SharedPreferences states = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = states.edit();
editor.putBoolean("holder.chkBox", true);
//pizzaSelected.put(p.getId(), p);
System.out.println(p.getId());
} else {
finalHolder.edit.setVisibility(View.GONE);
finalHolder.edit.setEnabled(false);
finalHolder.edit.setText(null);
pizzaSelected.remove(p.getId());
}
}
});
*/
/* finalHolder.edit.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
p.setQuantità(finalHolder.edit.getText().toString().trim());
SharedPreferences states = getContext().getSharedPreferences("states", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = states.edit();
editor.putString("finalHolder.edit" + finalHolder.planetName.getText().toString(), finalHolder.edit.getText().toString().trim());
editor.commit();
}
});
*/
// holder.planetName.setText(p.getName());
// holder.distView.setText("" + p.getDistance());
// holder.valuta.setText("" + p.getValuta());
// holder.chkBox.setChecked(p.isSelected());
// holder.chkBox.setTag(p);
// holder.edit.setEnabled(false);
// holder.id.setId(p.getId());
return row;
}
private FragmentManager getSupportFragmentManager() {
return null;
}
ArrayList<Planet> getBox() {
ArrayList<Planet> box = new ArrayList<Planet>();
for (Planet p : planetList) {
if (p.isSelected())
box.add(p);
}
return box;
}
}
FRAGMENT：
public class MyListFragment extends Fragment{
String user="";
Bundle arguments = getArguments();
if (arguments != null) {
//String userId = arguments.getString("key");
//System.out.println("finalmente:"+userId);
user = arguments.getString("key");
} /*else {
Log.i("BUNDLE == null", "NULL");
}*/
System.out.println("finalmente:"+user);
.
.
.
planetList.add(new Planet(getActivity.getSupportFragmentManager(),"Margherita", "6", "€","(pomodoro e mozzarella),"));
planetList.add(new Planet("Diavola", "7","€","(pomodoro,mozzarella e salsiccia piccante)"));
planetList.add(new Planet("Bufalina", "5","€","(pomodoro e mozzarella di bufala)"));
planetList.add(new Planet("Marinara", "5", "€","(pomodoro)"));
planetList.add(new Planet("Viennese", "4", "€", "(pomodoro,mozzarella e wrustel)"));
plAdapter = new PlanetAdapter(getSupportFragmentManager(),planetList, getContext(),imageId)
答案 0 :(得分：0)
这里有一些有用的方法来帮助分解你的逻辑。
public Fragment buildFragment(String data) {
MyListFragment fragment = new MyListFragment();
Bundle bundle = new Bundle();
bundle.putString("key", data);
fragment.setArguments(bundle);
return fragment;
}
// Display Fragment in a View with ID of "menu_frame"
public void replaceFragment(Fragment fragment, String tag) {
FragmentManager fm = getContextFragmentManager(this.context);
fm.beginTransaction()
.replace(R.id.menu_frame, fragment) // Make sure this ID can be found in the XML for the activity
.addToBackStack(tag)
.commit();
}
// Helper method to get the FragmentManager within the adapter
public FragmentManager getContextFragmentManager(Context context) {
FragmentManager fm = null;
if(context instanceof Activity){
fm = ((Activity)context).getSupportFragmentManager();
}
return fm;
}
你如何在Fragment中收到参数看起来很好。
你应该能够像这样使用这些方法
finalHolder.spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
finalHolder.spinner.setSelection(position);
String selState = finalHolder.spinner.getSelectedItem().toString();
Fragment fragment = buildFragment(selState);
String tag = fragment.getClass().getName();
replaceFragment(fragment, tag);
}
注意：
在适配器内部，适配器中没有getActivity()方法，因此您必须强制转换上下文。
getSupportFragmentManager()或getFragmentManager()最终取决于您使用的Fragment类 - 支持v4片段或android.app.Fragment类
请从适配器删除此方法。
private FragmentManager getSupportFragmentManager() {
return null;
}