模型类
public class TestListModel {
private String testlist_id;
private String test_price;
private String test_name;
private boolean isSelected;
public TestListModel(String testlist_id, String test_price, String test_name,boolean isSelected) {
this.testlist_id = testlist_id;
this.test_price = test_price;
this.test_name = test_name;
this.isSelected = isSelected;
}
public String getTestlist_id() {
return testlist_id;
}
public void setTestlist_id(String testlist_id) {
this.testlist_id = testlist_id;
}
public String getTest_price() {
return test_price;
}
public void setTest_price(String test_price) {
this.test_price = test_price;
}
public String getTest_name() {
return test_name;
}
public void setTest_name(String test_name) {
this.test_name = test_name;
}
public boolean isSelected() {
return isSelected;
}
public boolean setSelected(boolean isSelected) {
this.isSelected = isSelected;
return isSelected;
}
}
回收站适配器类
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
private ArrayList<TestListModel> android;
public RecyclerAdapter(ArrayList<TestListModel> android) {
this.android = android;
}
@Override
public RecyclerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.test_list_row,parent,false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(RecyclerAdapter.ViewHolder holder, final int position) {
holder.test_name.setText(android.get(position).getTest_name());
holder.test_price.setText(android.get(position).getTest_price());
holder.chkSelected.setChecked(android.get(position).isSelected());
holder.chkSelected.setTag(android.get(position));
holder.chkSelected.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
TestListModel contact = (TestListModel) cb.getTag();
contact.setSelected(cb.isChecked());
android.get(position).setSelected(cb.isChecked());
Toast.makeText(
v.getContext(),
"Clicked on Checkbox: " + cb.getText() + " is "
+ cb.isChecked(), Toast.LENGTH_LONG).show();
}
});
}
@Override
public int getItemCount() {
return android.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private TextView test_name;
private TextView test_price;
public CheckBox chkSelected;
public TestListModel testLists;
public ViewHolder(View itemView) {
super(itemView);
test_name = (TextView)itemView.findViewById(R.id.test_name);
test_price = (TextView)itemView.findViewById(R.id.price_name);
chkSelected = (CheckBox) itemView.findViewById(R.id.check_box);
}
}
// method to access in activity after updating selection
public List<TestListModel> getTestList() {
return android;
}
}
HealthActivity
public class HealthServicesActivity extends AppCompatActivity implements View.OnClickListener {
SharePreferenceManager<LoginModel> sharePreferenceManager;
/*
*Api call
* */
private RecyclerView recyclerView;
private ArrayList<TestListModel> data;
private RecyclerAdapter madapter;
private Button submitButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_health_services);
ButterKnife.bind(this);
sharePreferenceManager = new SharePreferenceManager<>(getApplicationContext());
submitButton = (Button) findViewById(R.id.submit_button);
}
/*
* On Click Listner
* */
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.submit_button:
String serialNo="";
int serialNum=1;
String testListId = "";
int totalPrice = 0;
String testName = "";
String testPrice="";
List<TestListModel> stList = ((RecyclerAdapter) madapter)
.getTestList();
for (int i = 0; i < stList.size(); i++) {
TestListModel singleStudent = stList.get(i);
if (singleStudent.isSelected() == true) {
testListId = testListId+ "," + singleStudent.getTestlist_id().toString();
testName = testName + "\n" + "\n" + singleStudent.getTest_name().toString();
testPrice= testPrice+"\n" + "\n" + singleStudent.getTest_price().toString();
serialNo=serialNo + "\n" + "\n"+ Integer.parseInt(String.valueOf(serialNum));
serialNum++;
totalPrice= totalPrice+ Integer.parseInt(stList.get(i).getTest_price());
Intent in= new Intent(HealthServicesActivity.this, AmountCartActivity.class);
in.putExtra("test_id",testListId);
in.putExtra("test_name", testName);
in.putExtra("test_price", testPrice);
in.putExtra("total_price",totalPrice);
in.putExtra("serial_number",serialNo);
in.putExtra("patient_id",patientID);
startActivity(in);
}
else
Toasty.error(getApplicationContext(), "Please Select Test Lists", Toast.LENGTH_SHORT, true).show();
}
break;
/* Toast.makeText(HealthServicesActivity.this,
"Selected Lists: \n" + testName+""+testPrice, Toast.LENGTH_LONG)
.show();*/
/** back Button Click
* */
case R.id.back_to_add_patient:
startActivity(new Intent(getApplicationContext(), PatientActivity.class));
finish();
break;
default:
break;
}
}
/*
* Api Call For Displaying Test Lists
* */
private void loadJSON() {
String centerID=(sharePreferenceManager.getUserLoginData(LoginModel.class).getResult().getCenterId());
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(" http://192.168.1.80/aoplnew/api/")
// .baseUrl("https://earthquake.usgs.gov/fdsnws/event/1/query?")
.addConverterFactory(GsonConverterFactory.create())
.build();
ApiInterface request = retrofit.create(ApiInterface.class);
Call<JSONResponse> call = request.getTestLists("http://192.168.1.80/aoplnew/api/users/gettestlist/"+centerID);
call.enqueue(new Callback<JSONResponse>() {
@Override
public void onResponse(Call<JSONResponse> call, Response<JSONResponse> response) {
JSONResponse jsonResponse = response.body();
data = new ArrayList<>(Arrays.asList(jsonResponse.getResult()));
madapter = new RecyclerAdapter(data);
recyclerView.setAdapter(madapter);
Toast.makeText(HealthServicesActivity.this, "APi Call Back", Toast.LENGTH_SHORT).show();
}
@Override
public void onFailure(Call<JSONResponse> call, Throwable t) {
Log.d("Error",t.getMessage());
}
});
}
@Override
public void onBackPressed() {
super.onBackPressed();
startActivity(new Intent(getApplicationContext(), PatientActivity.class));
finish();
}
}
AmountCartActivity
public class AmountCartActivity extends AppCompatActivity implements View.OnClickListener , PaymentResultListener {
SharePreferenceManager<LoginModel> sharePreferenceManager;
/*
*Setting Recycler View
* */
private RecyclerView recyclerView;
List<AmountCartModel> mydataList ;
private MyAdapter madapter;
/*
* Getting Bundle Values
* */
Bundle extras ;
String testId="";
String testName="";
String testPrice="";
String totalPrice="";
String serialNumber="";
private Button backButton;
/*
* Api Call For DashBoard
* */
String st;
Api webService = ServiceGenerator.getApi();
ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_amount_cart);
ButterKnife.bind(this);
progressDialog = new ProgressDialog(AmountCartActivity.this);
progressDialog.setMessage("Please Wait...");
progressDialog.setCanceledOnTouchOutside(false);
backButton=(Button) findViewById(R.id.back_button);
showcenterid(sharePreferenceManager.getUserLoginData(LoginModel.class));
backButton.setOnClickListener(this);
gettingValues();
}
@Override
public void onClick(View v) {
switch (v.getId()) {
/*
* back Button Click
* */
case R.id.back_button:
startActivity(new Intent(getApplicationContext(), HealthServicesActivity.class));
//finish();
break;
default:
break;
}
}
/*
* Getting Bundle Values and Setting Recycler View
* */
private void gettingValues() {
mydataList = new ArrayList<>();
/*
* Getting Values From BUNDLE
* */
bundle = getIntent().getExtras();
if (bundle != null) {
testId=bundle.getString("test_id");
testName = bundle.getString("test_name");
testPrice = bundle.getString("test_price");
totalPrice= String.valueOf(bundle.getInt("total_price"));
serialNumber=bundle.getString("serial_number");
//Just add your data in list
AmountCartModel mydata = new AmountCartModel(); // object of Model Class
mydata.setTestId(testId);
mydata.setTestName(testName );
mydata.setTestPrice(testPrice);
mydata.setSerialNumber(serialNumber);
mydataList.add(mydata);
totalPriceDisplay.setText("Total Amount : "+totalPrice);
}
madapter=new MyAdapter(mydataList);
madapter.setMyDataList(mydataList);
recyclerView = (RecyclerView)findViewById(R.id.recyler_amount_cart);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(madapter);
}
用于AmountCart的回收站适配器
/*
* Recycler Adapter
*/
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private List<AmountCartModel> context;
private List<AmountCartModel> myDataList;
public MyAdapter(List<AmountCartModel> context) {
this.context = context;
myDataList = new ArrayList<>();
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// Replace with your layout
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.amount_cart_row, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
// Set Your Data here to yout Layout Components..
// to get Amount
/* myDataList.get(position).getTestName();
myDataList.get(position).getTestPrice();*/
holder.testName.setText(myDataList.get(position).getTestName());
holder.testPrice.setText(myDataList.get(position).getTestPrice());
holder.textView2.setText(myDataList.get(position).getSerialNumber());
}
@Override
public int getItemCount() {
/*if (myDataList.size() != 0) {
// return Size of List if not empty!
return myDataList.size();
}
return 0;*/
return myDataList.size();
}
public void setMyDataList(List<AmountCartModel> myDataList) {
// getting list from Fragment.
this.myDataList = myDataList;
notifyDataSetChanged();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView testName,testPrice,textView2;
public ViewHolder(View itemView) {
super(itemView);
// itemView.findViewById
testName=itemView.findViewById(R.id.test_name_one);
testPrice=itemView.findViewById(R.id.test_price);
textView2=itemView.findViewById(R.id.textView2);
}
}
}
如何在活动中保持复选框状态。我在REST API调用中使用回收站视图显示复选框。我从HealthActivity中选择复选框，然后单击“提交”按钮，然后整个列表显示在AmountCartActivity中，但是当我单击“后退”按钮时，我没有得到那些选定的复选框。当我添加或删除任何复选框时，它应该仅按选择给出结果。如何保持所选复选框的状态？
答案 0 :(得分：0)
在您的AmountCartActivity中，当您监听后退按钮的点击时，您可以执行以下操作：
@Override
public void onClick(View v) {
switch (v.getId()) {
/*
* back Button Click
* */
case R.id.back_button:
startActivity(new Intent(getApplicationContext(), HealthServicesActivity.class));
//finish();
break;
default:
break;
}
}
您正在打开全新的HealthServicesActivity，并且不会在任何地方保留数据。 （当您打开一个新的HealthServicesActivity时，它对您的旧列表一无所知）。因此，我认为您的目标是完成AmountCartActivity并像这样恢复以前的HealthServicesActivity：
@Override
public void onClick(View v) {
switch (v.getId()) {
/*
* back Button Click
* */
case R.id.back_button:
finish(); //JUST FINISH THE ACTIVITY AND RETURN TO THE PREVIOUS ACTIVITY
break;
default:
break;
}
}
编辑 ：（添加了项目点击监听器逻辑）
由于每次提交和返回时都将使用相同的HealthServiceActivity，所以我认为您应该实现一个接口来保持复选框状态的更新。在各自的方法中进行以下更改（请参阅我的评论）
RecylerAdapter：
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
private ArrayList<TestListModel> android;
private OnItemClickListener onItemClickListener; //ADD THIS GLOBAL FIELD
/** THIS METHOD IS TO BIND YOUR NEW ITEM CLICK LISTENER **/
public void setOnItemClickListener(OnItemClickListener onItemClickListener)
{
this.onItemClickListener = onItemClickListener;
}
@Override
public void onBindViewHolder(RecyclerAdapter.ViewHolder holder, final int position) {
holder.test_name.setText(android.get(position).getTest_name());
holder.test_price.setText(android.get(position).getTest_price());
holder.chkSelected.setChecked(android.get(position).isSelected());
//YOU DON'T HAVE TO DEAL WITH TAGS, JUST USE BELOW CODE TO SET YOUR
// ITEM CLICK LISTENER TO EACH CHECKBOX
holder.chkSelected.setOnClickListener(v ->
onItemClickListener.onClickItem(position);
}
// THIS METHOD WILL SWITCH YOUR SELECT STATES AND UPDATE ITEMS ACCORDINGLY
public void updateCheckboxState(int position){
TestListModel listItem = android.get(position);
listItem.setSelected(!listItem.isSelected());
notifyDataSetChanged();
}
// ADD THIS INTERFACE
public interface OnItemClickListener {
void onClickItem(int position);
}
}
HealthServicesActivity：
//DON'T FORGET TO IMPLEMENT RecylcerAdapter.OnItemClickListener
public class HealthServicesActivity extends AppCompatActivity implements View.OnClickListener, RecyclerAdapter.OnItemClickListener {
/*
* Api Call For Displaying Test Lists
* */
private void loadJSON() {
{ ... }
@Override
public void onResponse(Call<JSONResponse> call, Response<JSONResponse> response) {
JSONResponse jsonResponse = response.body();
data = new ArrayList<>(Arrays.asList(jsonResponse.getResult()));
madapter = new RecyclerAdapter(data);
madapter.setOnItemClickListener(this); // SET YOUR LISTENER HERE
recyclerView.setAdapter(madapter);
Toast.makeText(HealthServicesActivity.this, "APi Call Back", Toast.LENGTH_SHORT).show();
}
// UPDATE CHECKBOX STATES WHEN AN ITEM IS CLICKED
@Override
public void onClickItem(int position) {
madapter.updateCheckboxState(position);
}
}