将数据从活动传递到片段时出现java问题
这是我的原始应用程序：
当我点击按钮将活动中的数据传递到我的应用程序片段时，我的应用程序会变成这样：
我不知道为什么
我给你看我的代码
活动\可滚动\选项卡。XML:
<安卓.support.design.widget.CoordinatorLayout xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
xmlns:app="http://schemas.安卓.com/apk/res-auto"
安卓:layout_width="match_parent"
安卓:layout_height="match_parent"
安卓:id="@+id/container">
<安卓.support.design.widget.AppBarLayout
安卓:layout_width="match_parent"
安卓:layout_height="wrap_content"
安卓:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<安卓.support.v7.widget.Toolbar
安卓:id="@+id/toolbar"
安卓:layout_width="match_parent"
安卓:layout_height="?attr/actionBarSize"
安卓:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
<LinearLayout
安卓:layout_width="fill_parent"
安卓:layout_height="wrap_content"
安卓:layout_centerInParent="true"
安卓:layout_marginLeft="20dp"
安卓:layout_marginRight="20dp"
安卓:gravity="center"
安卓:orientation="horizontal" >
<TextView
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:text="@string/welcome"
安卓:textSize="20dp"
安卓:layout_marginLeft="5dp"
/>
<TextView
安卓:id="@+id/name"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:padding="10dp"
安卓:textColor="@color/lbl_name"
安卓:textSize="24dp"
安卓:layout_marginLeft="5dp"
/>
<Button
安卓:id="@+id/btnLogout"
安卓:layout_width="122dp"
安卓:layout_height="wrap_content"
安卓:layout_marginRight="40dip"
安卓:background="@color/btn_logut_bg"
安卓:text="@string/btn_logout"
安卓:textAllCaps="false"
安卓:textColor="@color/white"
安卓:textSize="15dp"
安卓:layout_marginLeft="5dp"
安卓:onClick="logoutUser"
/>
</LinearLayout>
<!-- <FrameLayout xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
安卓:id="@+id/azz"
安卓:layout_width="match_parent"
安卓:layout_height="match_parent" >
</FrameLayout>-->
</安卓.support.v7.widget.Toolbar>
<安卓.support.design.widget.TabLayout
安卓:id="@+id/tabs"
安卓:layout_width="match_parent"
安卓:layout_height="wrap_content"
app:tabMode="scrollable"/>
</安卓.support.design.widget.AppBarLayout>
<安卓.support.v4.view.ViewPager
安卓:id="@+id/viewpager"
安卓:layout_width="match_parent"
安卓:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" >
<!-- <fragment
安卓:id="@+id/details_fragment"
安卓:layout_width="match_parent"
安卓:layout_height="match_parent"/>-->
</安卓.support.v4.view.ViewPager>
</安卓.support.design.widget.CoordinatorLayout>
活动：
public class ScrollableTabsActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private Button cazzo;
//private SQLiteHandler db;
private SessionManager session;
private TextView txtName;
private TextView txtEmail;
int s;
String intentt="";
File file;
Uri filePath;
ArrayList<Integer> hm=new ArrayList<>();
String path;
ArrayList<Planet> planetList=new ArrayList();
private String myString = "azz";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scrollable_tabs);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
cazzo = (Button) findViewById(R.id.btnLogout);
txtName = (TextView) findViewById(R.id.name);
txtEmail = (TextView) findViewById(R.id.numero_telefonico);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
cazzo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
logoutUser();
}
});
//db = new SQLiteHandler(getApplication());
// session manager
/* session = new SessionManager(getApplication());
if (!session.isLoggedIn()) {
logoutUser();
}*/
// Fetching user details from SQLite
/* HashMap<String, String> user = db.getUserDetails();
String name = user.get("name");
String email = user.get("email");
String id=user.get("id");
// Displaying the user details on the screen
System.out.println(name + email);
txtName.setText(email);*/
s = getIntent().getIntExtra("EXTRA_SESSION_ID",0);
System.out.println("IDDDDDDD" + s);
// getMyData();
}
/* public int getMyData() {
return s;
}*/
private void logoutUser() {
//session.setLogin(false);
// db.deleteUsers();
// Launching the login activity
/* Intent intent = new Intent(ScrollableTabsActivity.this, LoginActivity.class);
startActivity(intent);
finish();*/
Intent intent = new Intent();
intent.setPackage("com.asus.filemanager");
intent.setType("text/xml");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "LOGOUT"), 1);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
filePath = data.getData();
path = FilePath.getPath(this, filePath);
System.out.println("PATH" + path);
int a=0;
String status="";
boolean statuss = false;
String intenttt= path;
System.out.println("INTENT:"+intenttt);
file = new File(intenttt);
System.out.println("FILE:"+file);
FileInputStream is = null;
try {
is = new FileInputStream(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = null;
try {
dBuilder = dbFactory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
e.printStackTrace();
}
Document doc = null;
try {
doc = dBuilder.parse(is);
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Element element = doc.getDocumentElement();
element.normalize();
NodeList nList = doc.getElementsByTagName("checkboxes_pizza");
for (int i = 0; i < nList.getLength(); i++) {
Node node = nList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE) {
Element element2 = (Element) node;
//tv1.setText(tv1.getText()+"\nName : " + getValue("name", element2)+"\n");
String id = getValue("id", element2);
a = Integer.parseInt(id);
status = getValue("status", element2);
statuss= Boolean.parseBoolean(status);
System.out.println("XML:" + a);
hm.add(a);
System.out.println("AZZ:" + hm);
}
}
//getMyData();
Bundle bundle = new Bundle();
bundle.putString("params", "My String data");
/* MyListFragment myObj = new MyListFragment();
myObj.setArguments(bundle);*/
Fragment fragment = new MyListFragment();
fragment.setArguments(bundle);
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.add(R.id.container, fragment);
transaction.commit();
System.out.println("PASSATO "+bundle);
}
private static String getValue(String tag, Element element) {
NodeList nodeList = element.getElementsByTagName(tag).item(0).getChildNodes();
Node node = nodeList.item(0);
return node.getNodeValue();
}
/* @Override
protected void onPause() {
super.onPause();
logoutUser();
}*/
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new MyListFragment(), "PIZZE");
adapter.addFrag(new SixFragment(), "SIX");
adapter.addFrag(new FiveFragment(), "TAVOLI");
adapter.addFrag(new ThreeFragment(), "BEVANDE");
adapter.addFrag(new FourFragment(), "STAMPA");
adapter.addFrag(new TwoFragment(), "TWO");
adapter.addFrag(new SevenFragment(), "SEVEN");
adapter.addFrag(new EightFragment(), "EIGHT");
adapter.addFrag(new NineFragment(), "NINE");
adapter.addFrag(new TenFragment(), "TEN");
viewPager.setAdapter(adapter);
viewPager.setOffscreenPageLimit(10);
}
/*private void logoutUser() {
SessionManager session;
session.setLogin(false);
db.deleteUsers();
// Launching the login activity
// Intent intent = new Intent(MyListFragment.this, LoginActivity.class);
Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
startActivity(intent);
getA.finish();
}*/
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
行星适配器：
public class PlanetAdapter extends ArrayAdapter<Planet> implements CompoundButton.OnCheckedChangeListener, View.OnClickListener
{
private List<Planet> planetList;
private Context context ;
ArrayList<Birra> objects;
public boolean Checked;
private Integer[] imageId;
String ciao;
static PlanetAdapter plAdapter;
String selState ;
boolean[] itemChecked;
ArrayList<Integer> hmmm;
//MyListner mListener;
public PlanetAdapter(List<Planet> planetList, Context context,Integer[] imageId,ArrayList<Integer> hm) {
super(context, R.layout.single_listview_item,planetList);
//itemChecked = new boolean[planetList.size()];
this.planetList = planetList;
this.context = context;
this.imageId = imageId;
this.itemChecked=new boolean[planetList.size()];
this.hmmm=hm;
// mListener=(MyListner)context;
}
public PlanetAdapter(@NonNull Context context, @LayoutRes int resource,ArrayList<Integer> a) {
super(context, resource);
this.hmmm=a;
System.out.println("ARRAYLIST2:"+hmmm);
}
/* public void setItems(ArrayList<Integer> items) {
hmmm = items;
notifyDataSetChanged();
//System.out.println("HMMM:"+hmmm);
}*/
@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);
}
// static ArrayList<Integer> itemss;
@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.spinner = (Spinner) row.findViewById(R.id.simpleSpinner);
holder.np=(NumberPicker)row.findViewById(R.id.np);
// iterator.setOnClickListener(this.PlanetHolder);
holder.caratteristica=(TextView) row.findViewById(R.id.caratteristica);
holder.imageView = (ImageView) row.findViewById(R.id.ivImage);
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);
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());
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.spinner.setVisibility(View.GONE);
holder.np.setVisibility(View.GONE);
}
holder.chkBox.setOnCheckedChangeListener(PlanetAdapter.this);
final PlanetHolder finalHolder = holder;
Planet z=getItem(position);
System.out.println(z);
holder.chkBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(final View v) {
if (finalHolder.chkBox.isChecked()) {
itemChecked[position]=true;
System.out.println("POSITION:"+position);
finalHolder.spinner.setVisibility(View.VISIBLE);
finalHolder.np.setVisibility(View.VISIBLE);
finalHolder.np.setMaxValue(10);
finalHolder.np.setMinValue(0);
finalHolder.np.setWrapSelectorWheel(true);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
getContext(),
R.array.country_arrays,
安卓.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(安卓.R.layout.simple_spinner_dropdown_item);
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());
System.out.println("p.getTipo()"+p.getTipo());
}
@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();
} else {
finalHolder.spinner.setVisibility(View.GONE);
finalHolder.np.setVisibility(View.GONE);
finalHolder.np.setValue(0);
}
}
});
return row;
}
}
单个\u列表视图\u项。XML
<LinearLayout xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
xmlns:tools="http://schemas.安卓.com/tools"
安卓:layout_width="match_parent"
安卓:layout_height="wrap_content"
安卓:orientation="horizontal" >
<CheckBox
安卓:id="@+id/chk_box"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:layout_alignParentLeft="true" />
<LinearLayout
安卓:id="@+id/linearLayout1"
安卓:layout_width="0dp"
安卓:layout_height="wrap_content"
安卓:layout_marginLeft="5dp"
安卓:orientation="vertical"
安卓:layout_weight="1" >
<TextView
安卓:id="@+id/name"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:layout_toRightOf="@id/chk_box"
安卓:textStyle="bold"
安卓:textColor="#000000" />
<LinearLayout
安卓:layout_width="match_parent"
安卓:layout_height="match_parent">
<TextView
安卓:id="@+id/caratteristica"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:layout_below="@id/name"
安卓:layout_toRightOf="@id/chk_box"
安卓:textStyle="italic" />
</LinearLayout>
<LinearLayout
安卓:layout_width="match_parent"
安卓:layout_height="match_parent">
<TextView
安卓:id="@+id/dist"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:layout_below="@id/caratteristica"
安卓:layout_toRightOf="@id/chk_box"
安卓:textSize="12sp"
安卓:textStyle="italic" />
<TextView
安卓:id="@+id/valuta"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:layout_marginLeft="5dp"
安卓:textSize="12sp"
安卓:textStyle="italic" />
</LinearLayout>
<Spinner
安卓:id="@+id/simpleSpinner"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
安卓:layout_centerHorizontal="true"
安卓:layout_marginTop="50dp"
安卓:entries="@array/country_arrays"/>
<NumberPicker
安卓:id="@+id/np"
安卓:layout_width="wrap_content"
安卓:layout_height="wrap_content"
/>
</LinearLayout>
<ImageView
安卓:id="@+id/ivImage"
安卓:layout_width="72dp"
安卓:layout_height="72dp"
安卓:layout_marginRight="5dp"
安卓:layout_gravity="center"
/>
</LinearLayout>
# 1 楼答案
请格式化代码并删除多余的空行。因为它几乎不可读
不要在
onActivityResult中添加片段，而是在onCreate中添加片段，必要时在onActivityResult中设置适配器数据所以把这段代码移到
onCreate而且
MyListFragment应该有一个名为refreshlist的方法此外，在片段布局中，在xml中放置一个白色背景：
# 2 楼答案
从适配器的
getView()方法隐藏并显示Spinner和NumberPicker时出现问题：似乎您的
Listview项的布局设计不正确。更新single_listview_item.xml布局设计如下：