将用户 clicked/swiped 项目从第一个片段中的一个列表视图转移到第二个片段中的另一个列表视图
Transferring user clicked/swiped item from one listview in 1st fragment to another listview in 2nd fragment
我需要知道如何将项目从第一个片段的列表视图移动到第二个片段的另一个列表视图fragment.Below 是 2 个片段的代码和包含列表视图的 xml 文件项目。
AbsentStudentFragment.java
编辑：
我已经用数组列表替换了所有数组，并且我正在使用带有简单 POJO class 的 Arraylist 为列表适配器生成数据。
请检查 below.My 问题是如何使用我从名称、置信度等列表项中获取的值或我获取的 StudentDetails 类型的 POJO，并将这些值添加到 PresentStudent 片段中的 PresentStudent arraylist。？
public class AbsentStudentFragment extends Fragment
{
ListView listForAbsentStudents;
Context context;
public View onCreateView(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState)
{
final ArrayList<StudentDetails> stuAbsent= new ArrayList<>();
stuAbsent.add(new StudentDetails("name","nameNot",R.mipmap.user));
stuAbsent.add(new StudentDetails("81","checkName",R.mipmap.user));
stuAbsent.add(new StudentDetails("60","3rd",R.mipmap.user));
View view = inflater.inflate(R.layout.fragment_absent_students, container,false);
context=getActivity();
listForAbsentStudents=(ListView)view.findViewById(R.id.listview_for_absent_students);
final AdapterForAbsentList adapterForAbsentList=new AdapterForAbsentList(context,stuAbsent);
listForAbsentStudents.setAdapter(adapterForAbsentList);
listForAbsentStudents.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//what to do here.?
//Added below code now
StudentDetails studentDetails4;
studentDetails4=stuAbsent.get(position);
String temName=studentDetails4.getStudentName();
String tempConfidence=studentDetails4.getStudentConfidence();
int tempImage=studentDetails4.getStudentImage();
//Now how can I add these values to presentstudent array list in PresentStudent.java fragment.?
//presentStudentFragment.addToPresentStudents(temName,tempConfidence,tempImage);
Toast.makeText(getContext(),"value"+temName,Toast.LENGTH_SHORT).show();
}
});
return view;
}
public class AdapterForAbsentList extends BaseAdapter
{
public AdapterForAbsentList(Context mContext,ArrayList<StudentDetails>absentStudents)
{
this.absentStudents2 = absentStudents;
this.mContext = mContext;
}
ArrayList<StudentDetails> absentStudents2;
private Context mContext;
@Override
public int getCount() {
return absentStudents2.size();;
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(int i, View convertView, ViewGroup viewGroup) {
View viewForListView;
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
{
viewForListView =inflater.inflate(R.layout.custom_row_for_absent_list,null);
TextView txtConfidence=(TextView)viewForListView.findViewById(R.id.txtConfidence_Temp);
TextView txtName=(TextView)viewForListView.findViewById(R.id.txtName_Temp);
ImageView imgStudentThumbnail=(ImageView)viewForListView.findViewById(R.id.imgFile_Temp);
txtConfidence.setText(absentStudents2.get(i).getStudentConfidence());
txtName.setText(absentStudents2.get(i).getStudentName());
imgStudentThumbnail.setImageResource(absentStudents2.get(i).getStudentImage());
}
else
{
viewForListView = convertView;
}
return viewForListView;
}
}
}
和PresentStudentFragment.java
已编辑 添加了数组列表。
我应该如何将从 AbsentStudentFragment.java 上的数组列表中获取的值添加到 ArrayList listPresentStudents..？
public class PresentStudentFragment extends Fragment {
ListView listForPresentStudents;
public ArrayList<StudentDetails>listPresentStudents=new ArrayList<>();
Context context;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.fragment_present_students, container, false);
context=getActivity();
listPresentStudents.add(new StudentDetails("80","saurabh",R.mipmap.user));
listPresentStudents.add(new StudentDetails("60","pqr",R.mipmap.user));
listForPresentStudents=(ListView)view.findViewById(R.id.listview_for_present_students);
AdapterForPresentList adapterForPresentListNew=new AdapterForPresentList(context,listPresentStudents);
listForPresentStudents.setAdapter(adapterForPresentList);
return view;
}
public class AdapterForPresentList extends BaseAdapter
{
private Context mContext;
ArrayList<StudentDetails>abc;
public AdapterForPresentList(Context context, ArrayList<StudentDetails>pqr)
{
this.mContext=context;
this.abc = pqr;
}
@Override
public int getCount() {
return abc.size();;
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(int i, View convertView, ViewGroup viewGroup)
{
View viewForListView;
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
{
viewForListView = inflater.inflate(R.layout.custom_row_for_present_list, null);
TextView txtConfidence=(TextView)viewForListView.findViewById(R.id.txtConfidence_Temp2);
TextView txtName=(TextView)viewForListView.findViewById(R.id.txtName_Temp2);
ImageView imgStudentThumbnail=(ImageView)viewForListView.findViewById(R.id.imgFile_Temp2);
txtName.setText(abc.get(i).getStudentName());
txtConfidence.setText(abc.get(i).getStudentConfidence());
imgStudentThumbnail.setImageResource(abc.get(i).getStudentImage());
} else
{
viewForListView = convertView;
}
return viewForListView;
}
}
}
POJO class StudentDetails.java
public class StudentDetails {
String studentName,studentConfidence;
int studentImage;
public StudentDetails() {
}
public String getStudentName() {
return studentName;
}
public void setStudentName(String studentName) {
this.studentName = studentName;
}
public String getStudentConfidence() {
return studentConfidence;
}
public void setStudentConfidence(String studentConfidence) {
this.studentConfidence = studentConfidence;
}
public int getStudentImage() {
return studentImage;
}
public void setStudentImage(int studentImage) {
this.studentImage = studentImage;
}
public StudentDetails(String studentName, String studentConfidence, int studentImage) {
this.studentName = studentName;
this.studentConfidence = studentConfidence;
this.studentImage = studentImage;
}
}
以及列表项的浏览量custom_row_list
<ImageView
android:id="@+id/imgFile_Temp2"
android:layout_width="90dp"
android:layout_height="90dp"
android:src="@mipmap/user"
android:padding="10dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/imgFile_Temp2"
android:orientation="vertical">
<TextView
android:id="@+id/txtConfidence_Temp2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:textColor="@android:color/black"
android:textSize="16sp" />
<TextView
android:id="@+id/txtName_Temp2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:textColor="@android:color/black"
android:textSize="16sp" />
我需要的是，如果我 swipe/clicked 一个来自 listForAbsentStudents 列表的项目，那么它应该被转移到 listForPresentStudents 列表，并且该项目应该从缺席学生列表中删除。
我该怎么做……忘了刷卡吧……这对我来说似乎很遥远……
请告诉我在 listview 的 onItemclick() 方法上我应该怎么做才能达到这个目的。
我应该使用 intents and/or bundle 来传递 extras.. 如果是这样的话..？
类似于 parent.getItemAt(position)..？
我不明白你在问什么..我假设你的一个 Fragment 包含 ListView..对吗？如果用户单击 ListView 中的任何项目，该项目应该传递给另一个片段..对吗？
请在 AbsentStudentFragment.java 中的 onItemClick(..) 方法
中使用它
PresentStudentFragment fragObj = new PresentStudentFragment();
Bundle args = new Bundle();
args.putString("YourKey", "YourValue");
//as many as putString() you want
fragObj.setArguments(args);
在你的 onCreateView(..) 方法中 PresentStudentFragment.java 的地方
String value = getArguments().getString("YourKey");
希望对你有帮助..
我需要知道如何将项目从第一个片段的列表视图移动到第二个片段的另一个列表视图fragment.Below 是 2 个片段的代码和包含列表视图的 xml 文件项目。 AbsentStudentFragment.java
编辑： 我已经用数组列表替换了所有数组，并且我正在使用带有简单 POJO class 的 Arraylist 为列表适配器生成数据。 请检查 below.My 问题是如何使用我从名称、置信度等列表项中获取的值或我获取的 StudentDetails 类型的 POJO，并将这些值添加到 PresentStudent 片段中的 PresentStudent arraylist。？
public class AbsentStudentFragment extends Fragment
{
ListView listForAbsentStudents;
Context context;
public View onCreateView(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState)
{
final ArrayList<StudentDetails> stuAbsent= new ArrayList<>();
stuAbsent.add(new StudentDetails("name","nameNot",R.mipmap.user));
stuAbsent.add(new StudentDetails("81","checkName",R.mipmap.user));
stuAbsent.add(new StudentDetails("60","3rd",R.mipmap.user));
View view = inflater.inflate(R.layout.fragment_absent_students, container,false);
context=getActivity();
listForAbsentStudents=(ListView)view.findViewById(R.id.listview_for_absent_students);
final AdapterForAbsentList adapterForAbsentList=new AdapterForAbsentList(context,stuAbsent);
listForAbsentStudents.setAdapter(adapterForAbsentList);
listForAbsentStudents.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//what to do here.?
//Added below code now
StudentDetails studentDetails4;
studentDetails4=stuAbsent.get(position);
String temName=studentDetails4.getStudentName();
String tempConfidence=studentDetails4.getStudentConfidence();
int tempImage=studentDetails4.getStudentImage();
//Now how can I add these values to presentstudent array list in PresentStudent.java fragment.?
//presentStudentFragment.addToPresentStudents(temName,tempConfidence,tempImage);
Toast.makeText(getContext(),"value"+temName,Toast.LENGTH_SHORT).show();
}
});
return view;
}
public class AdapterForAbsentList extends BaseAdapter
{
public AdapterForAbsentList(Context mContext,ArrayList<StudentDetails>absentStudents)
{
this.absentStudents2 = absentStudents;
this.mContext = mContext;
}
ArrayList<StudentDetails> absentStudents2;
private Context mContext;
@Override
public int getCount() {
return absentStudents2.size();;
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(int i, View convertView, ViewGroup viewGroup) {
View viewForListView;
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
{
viewForListView =inflater.inflate(R.layout.custom_row_for_absent_list,null);
TextView txtConfidence=(TextView)viewForListView.findViewById(R.id.txtConfidence_Temp);
TextView txtName=(TextView)viewForListView.findViewById(R.id.txtName_Temp);
ImageView imgStudentThumbnail=(ImageView)viewForListView.findViewById(R.id.imgFile_Temp);
txtConfidence.setText(absentStudents2.get(i).getStudentConfidence());
txtName.setText(absentStudents2.get(i).getStudentName());
imgStudentThumbnail.setImageResource(absentStudents2.get(i).getStudentImage());
}
else
{
viewForListView = convertView;
}
return viewForListView;
}
}
}
和PresentStudentFragment.java
已编辑 添加了数组列表。
我应该如何将从 AbsentStudentFragment.java 上的数组列表中获取的值添加到 ArrayList listPresentStudents..？
public class PresentStudentFragment extends Fragment {
ListView listForPresentStudents;
public ArrayList<StudentDetails>listPresentStudents=new ArrayList<>();
Context context;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.fragment_present_students, container, false);
context=getActivity();
listPresentStudents.add(new StudentDetails("80","saurabh",R.mipmap.user));
listPresentStudents.add(new StudentDetails("60","pqr",R.mipmap.user));
listForPresentStudents=(ListView)view.findViewById(R.id.listview_for_present_students);
AdapterForPresentList adapterForPresentListNew=new AdapterForPresentList(context,listPresentStudents);
listForPresentStudents.setAdapter(adapterForPresentList);
return view;
}
public class AdapterForPresentList extends BaseAdapter
{
private Context mContext;
ArrayList<StudentDetails>abc;
public AdapterForPresentList(Context context, ArrayList<StudentDetails>pqr)
{
this.mContext=context;
this.abc = pqr;
}
@Override
public int getCount() {
return abc.size();;
}
@Override
public Object getItem(int i) {
return null;
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(int i, View convertView, ViewGroup viewGroup)
{
View viewForListView;
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
{
viewForListView = inflater.inflate(R.layout.custom_row_for_present_list, null);
TextView txtConfidence=(TextView)viewForListView.findViewById(R.id.txtConfidence_Temp2);
TextView txtName=(TextView)viewForListView.findViewById(R.id.txtName_Temp2);
ImageView imgStudentThumbnail=(ImageView)viewForListView.findViewById(R.id.imgFile_Temp2);
txtName.setText(abc.get(i).getStudentName());
txtConfidence.setText(abc.get(i).getStudentConfidence());
imgStudentThumbnail.setImageResource(abc.get(i).getStudentImage());
} else
{
viewForListView = convertView;
}
return viewForListView;
}
}
}
POJO class StudentDetails.java
public class StudentDetails {
String studentName,studentConfidence;
int studentImage;
public StudentDetails() {
}
public String getStudentName() {
return studentName;
}
public void setStudentName(String studentName) {
this.studentName = studentName;
}
public String getStudentConfidence() {
return studentConfidence;
}
public void setStudentConfidence(String studentConfidence) {
this.studentConfidence = studentConfidence;
}
public int getStudentImage() {
return studentImage;
}
public void setStudentImage(int studentImage) {
this.studentImage = studentImage;
}
public StudentDetails(String studentName, String studentConfidence, int studentImage) {
this.studentName = studentName;
this.studentConfidence = studentConfidence;
this.studentImage = studentImage;
}
}
以及列表项的浏览量custom_row_list
<ImageView
android:id="@+id/imgFile_Temp2"
android:layout_width="90dp"
android:layout_height="90dp"
android:src="@mipmap/user"
android:padding="10dp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/imgFile_Temp2"
android:orientation="vertical">
<TextView
android:id="@+id/txtConfidence_Temp2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:textColor="@android:color/black"
android:textSize="16sp" />
<TextView
android:id="@+id/txtName_Temp2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:textColor="@android:color/black"
android:textSize="16sp" />
我需要的是，如果我 swipe/clicked 一个来自 listForAbsentStudents 列表的项目，那么它应该被转移到 listForPresentStudents 列表，并且该项目应该从缺席学生列表中删除。
我该怎么做……忘了刷卡吧……这对我来说似乎很遥远……
请告诉我在 listview 的 onItemclick() 方法上我应该怎么做才能达到这个目的。
我应该使用 intents and/or bundle 来传递 extras.. 如果是这样的话..？
类似于 parent.getItemAt(position)..？
我不明白你在问什么..我假设你的一个 Fragment 包含 ListView..对吗？如果用户单击 ListView 中的任何项目，该项目应该传递给另一个片段..对吗？
请在 AbsentStudentFragment.java 中的 onItemClick(..) 方法
中使用它 PresentStudentFragment fragObj = new PresentStudentFragment();
Bundle args = new Bundle();
args.putString("YourKey", "YourValue");
//as many as putString() you want
fragObj.setArguments(args);
在你的 onCreateView(..) 方法中 PresentStudentFragment.java 的地方
String value = getArguments().getString("YourKey");
希望对你有帮助..