在onViewCreated（）中选择复选框的问题
当我在onViewCreated()启动我的应用程序时，我需要自动选择所有复选框。
使用此代码：
@Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); lv = (ListView)getView().findViewById(R.id.listview); displayPlanetList(); for (int i=0;i<plAdapter.getCount();i++) { Planet p=plAdapter.getItem(i); //if(p.getId()==3) { //System.out.println("NOME PIANETA:" + p.getName()); p.setSelected(true); //} p.setSelected(true); System.out.println("NOME PIANETA2:" + p.isSelected()); } }
在LOGCAT中，我看到5次为true ，但我没有看到复选框被检查（所以视图）。
谁能帮我？
这是所有代码：
public class MyListFragment extends Fragment /*implements CompoundButton.OnCheckedChangeListener, View.OnClickListener*/ { ListView lv; ArrayList planetList; static PlanetAdapter plAdapter; private TextView txtName; private TextView txtEmail; private Button btnLogout; ListView listView; String user = ""; private Spinner spinner; String selState; EditText cristo; private String zao; CheckBox ck; //private SQLiteHandler db; private SessionManager session; BirraAdapter biAdapter; PlanetAdapter.PlanetHolder holder; private static Context context = null; private static FragmentActivity mInstance; ArrayList hm=new ArrayList(); HashMap ar=new HashMap(); Integer[] imageId = { R.mipmap.androtuto, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ic_launcher, R.mipmap.ok, /*R.drawable.image6, R.drawable.image7 Environment.getExternalStorageDirectory()" + " .getAbsolutePath() + /ordinazioni/16:Maggio:2017-13:36:38 Pm.xml*/ }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the custom_spinner_items for this fragment //super.onDestroy(); SharedPreferences settings = getContext().getSharedPreferences("states", Context.MODE_PRIVATE); SharedPreferences.Editor editor = settings.edit(); editor.clear(); editor.commit(); ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_list2, container, false); //ck=(CheckBox)rootView.findViewById(R.id.chk_box); //lv = (ListView) rootView.findViewById(R.id.listview); //ListAdapter listAdapter = new MyListAdapter(getContext()); //lv.setAdapter(listAdapter); context = getActivity(); mInstance = getActivity(); btnLogout = (Button) rootView.findViewById(R.id.btnLogout); return rootView; } @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); lv = (ListView)getView().findViewById(R.id.listview); displayPlanetList(); for (int i=0;i<plAdapter.getCount();i++) { Planet p=plAdapter.getItem(i); //if(p.getId()==3) { // System.out.println("NOME PIANETA:" + p.getName()); p.setSelected(true); //} System.out.println("NOME PIANETA2:" + p.isSelected()); } } private void displayPlanetList() { planetList = new ArrayList(); planetList.add(new Planet(1, "Margherita", "6", "€", "(pomodoro e mozzarella)")); planetList.add(new Planet(2,"Diavola", "7","€","(pomodoro,mozzarella e salsiccia piccante)")); planetList.add(new Planet(3,"Bufalina", "5","€","(pomodoro e mozzarella di bufala)")); planetList.add(new Planet(4, "Marinara", "5", "€", "(pomodoro)")); planetList.add(new Planet(5,"Viennese", "4", "€", "(pomodoro,mozzarella e wrustel)")); plAdapter = new PlanetAdapter(planetList, getContext(),imageId) { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { String pero=""; int la=0; int pos = lv.getPositionForView(buttonView); System.out.println("POS:"+pos); if (pos != ListView.INVALID_POSITION) { Planet p = planetList.get(pos); p.setSelected(isChecked); Toast.makeText( getActivity(), "Clicked on Pizza: " + la + ". State: is " + isChecked, Toast.LENGTH_SHORT).show(); } } }; lv.setAdapter(plAdapter); }
自定义适配器：
public abstract class PlanetAdapter extends ArrayAdapter implements CompoundButton.OnCheckedChangeListener, View.OnClickListener { private List planetList; private Context context ; ArrayList objects; public boolean Checked; private Integer[] imageId; String ciao; static PlanetAdapter plAdapter; String selState ; public PlanetAdapter(List planetList, Context context,Integer[] imageId) { super(context, R.layout.single_listview_item,planetList); this.planetList = planetList; this.context = context; this.imageId = imageId; } @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { } @Override public void onClick(View v) { } public class PlanetHolder { public TextView planetName; public TextView distView; public TextView valuta; public CheckBox chkBox; // public EditText edit; public TextView caratteristica; public TextView id; public ImageView imageView; public Spinner spinner; public NumberPicker np; } @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, final 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.np=(NumberPicker)row.findViewById(R.id.np); // holder.edit2 = (EditText) row.findViewById(R.id.editText2); // holder.iterator = (Button) row.findViewById(R.id.iterator); // Button iterator=(Button) row.findViewById(R.id.iterator); // iterator.setOnClickListener(this.PlanetHolder); 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.edit.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); System.out.println("stampato P" + p); 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.spinner.setVisibility(View.VISIBLE); holder.np.setVisibility(View.VISIBLE); } else { holder.chkBox.setChecked(false); // holder.edit.setVisibility(View.GONE); // holder.edit.setEnabled(false); holder.spinner.setVisibility(View.GONE); holder.np.setVisibility(View.GONE); } final PlanetHolder finalHolder2 = holder; holder.chkBox.setOnCheckedChangeListener(PlanetAdapter.this); // final BirraHolder finalHolder = birraHolder; final PlanetHolder finalHolder = holder; Planet z=getItem(position); System.out.println(z); final PlanetHolder finalHolder1 = holder; final PlanetHolder finalHolder3 = holder; holder.chkBox.setOnClickListener(new View.OnClickListener() { @Override public void onClick(final View v) { if (finalHolder.chkBox.isChecked()) { // finalHolder.edit.setVisibility(View.VISIBLE); // finalHolder.edit.setEnabled(true); finalHolder.spinner.setVisibility(View.VISIBLE); finalHolder.np.setVisibility(View.VISIBLE); finalHolder.np.setMaxValue(10); finalHolder.np.setMinValue(0); finalHolder.np.setWrapSelectorWheel(true); // finalHolder.np.getMinValue(); // System.out.println("valore picker alla selezione della checkbox"+finalHolder.np.getMinValue()); // finalHolder.edit2.setVisibility(View.VISIBLE); ArrayAdapter 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); // selState = finalHolder.spinner.getSelectedItem().toString(); // p.setQuantità(finalHolder.edit.getText().toString().trim()); p.setTipo(finalHolder.spinner.getSelectedItem().toString()); // finalHolder.edit2.setText(selState); // System.out.println(selState); System.out.println("p.getTipo()"+p.getTipo()); /* Toast.makeText( getContext(), "Clicked on Planet: " + selState + "", Toast.LENGTH_SHORT).show();*/ } @Override public void onNothingSelected(AdapterView parent) { } }); finalHolder.np.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() { @Override public void onValueChange(NumberPicker picker, int oldVal, int newVal) { p.setQuantità2(newVal); System.out.println(p.getQuantità2()); SharedPreferences states = getContext().getSharedPreferences("states", Context.MODE_PRIVATE); SharedPreferences.Editor editor = states.edit(); editor.putInt("finalHolder.picker" + finalHolder.planetName.getText().toString(), finalHolder.np.getId()); 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(); /* 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.spinner.setVisibility(View.GONE); finalHolder.np.setVisibility(View.GONE); finalHolder.np.setValue(0); } } }); return row; }
for循环结束后尝试使用plAdapter.notifyDataSetChanged（）。 在设置值后的适配器中，您必须刷新列表视图。
在你的适配器getView()方法中，试试这个：
@Override public View getView(final int position, final View convertView, final ViewGroup parent) { ........... ................... if (isChecked) { holder.chkBox.setChecked(true); holder.spinner.setVisibility(View.VISIBLE); holder.np.setVisibility(View.VISIBLE); } else { holder.chkBox.setChecked(false); holder.spinner.setVisibility(View.GONE); holder.np.setVisibility(View.GONE); } ......... ................... return row; }