我正在观察从外部api获取的livedata。正在验证实时数据并完成活动，如下面的代码所示。但是当我再次创建此活动时，将再次调用Observer，该活动将自行完成。
viewModel.getRescheduleResponse().observe(this, new Observer<Response >() {
@Override
public void onChanged(Response response) {
if(response!=null){
if(response.getOutput().get(0).getStatus().equalsIgnoreCase("success")){
Toast.makeText(ProcessDetails.this, "Service rescheduled successfully", Toast.LENGTH_SHORT).show();
finish();
}else{
Toast.makeText(ProcessDetails.this, response.getOutput().get(0).getMessage(), Toast.LENGTH_SHORT).show();
}
}else{
Toast.makeText(ProcessDetails.this, "Please check your network", Toast.LENGTH_SHORT).show();
}
}
});
这是活动代码。观察者在重新启动此活动时触发的地方
public class ProcessDetails extends BaseActivity {
TextView tracktech, reschedule;
LinearLayout action;
ProcessDetailViewModel viewModel;
ActivityProcessDetailsBinding binding;
ProgressDialog pdialog;
Dialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_process_details);
binding = DataBindingUtil.setContentView(this, R.layout.activity_process_details);
//viewModel = new ProcessDetailViewModel();
viewModel = ViewModelProviders.of(this).get(ProcessDetailViewModel.class);
if (savedInstanceState == null) {
viewModel.init();
}
pdialog = new ProgressDialog(this);
pdialog.setMessage("Please wait...");
binding.setViewModel(viewModel);
binding.setClickHandlers(new ClickHandlers());
tracktech = findViewById(R.id.tracktxt);
reschedule = findViewById(R.id.rescheduletxt);
action = findViewById(R.id.actionlay);
if (getIntent().getStringExtra("FROM") != null) {
tracktech.setVisibility(View.GONE);
action.setVisibility(View.GONE);
}
setupObdservers();
tracktech.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(), TrackingActivity.class);
startActivity(i);
}
});
}
public void setupObdservers() {
viewModel.getProcessdetailsResponse().observe(this, new Observer<ProcessDetailResponse>() {
@Override
public void onChanged(ProcessDetailResponse processDetailResponse) {
Log.i("darbar", "okay");
ProcessDetailModel model = new ProcessDetailModel();
model.setBrand(processDetailResponse.getOutput().get(0).getBookinglist().get(0).getBrand());
model.setDate(processDetailResponse.getOutput().get(0).getBookinglist().get(0).getDate());
model.setTime(processDetailResponse.getOutput().get(0).getBookinglist().get(0).getTime());
model.setAddress(processDetailResponse.getOutput().get(0).getBookinglist().get(0).getAddress());
model.setService(processDetailResponse.getOutput().get(0).getBookinglist().get(0).getServiceType());
model.setTechName(processDetailResponse.getOutput().get(0).getBookinglist().get(0).getTechnicianDetails().get(0).getName());
model.setTechPhone(processDetailResponse.getOutput().get(0).getBookinglist().get(0).getTechnicianDetails().get(0).getPhoneNo());
viewModel.setModel(model);
binding.setViewModel(viewModel);
}
});
viewModel.getRescheduleResponse().observe(this, new Observer<LoginResponse>() {
@Override
public void onChanged(LoginResponse loginResponse) {
if(loginResponse!=null){
if(loginResponse.getOutput().get(0).getStatus().equalsIgnoreCase("success")){
Log.i("darbar","gone");
Toast.makeText(ProcessDetails.this, "Service rescheduled successfully", Toast.LENGTH_SHORT).show();
finish();
}else{
Toast.makeText(ProcessDetails.this, loginResponse.getOutput().get(0).getMessage(), Toast.LENGTH_SHORT).show();
}
}else{
Toast.makeText(ProcessDetails.this, "Please check your network", Toast.LENGTH_SHORT).show();
}
}
});
}
public class ClickHandlers {
public void onRescheduleClick(View v) {
showCustomDialog();
}
}
private void showCustomDialog() {
dialog = new Dialog(ProcessDetails.this);
dialog.setContentView(R.layout.dialog_reschedule);
Button okbtn = dialog.findViewById(R.id.buttonOk);
final TextView datetxt = dialog.findViewById(R.id.datetxt);
final TextView timetxt = dialog.findViewById(R.id.timetxt);
datetxt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
final Calendar calendar = Calendar.getInstance();
int yy = calendar.get(Calendar.YEAR);
int mm = calendar.get(Calendar.MONTH);
int dd = calendar.get(Calendar.DAY_OF_MONTH);
DatePickerDialog datePicker = new DatePickerDialog(ProcessDetails.this, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
String date = String.valueOf(dayOfMonth) + "/" + String.valueOf(monthOfYear+1)
+ "/" + String.valueOf(year);
datetxt.setText(date);
}
}, yy, mm, dd);
datePicker.show();
}
});
timetxt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Calendar mcurrentTime = Calendar.getInstance();
int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
int minute = mcurrentTime.get(Calendar.MINUTE);
TimePickerDialog mTimePicker;
mTimePicker = new TimePickerDialog(ProcessDetails.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker timePicker, int hourOfDay, int selectedMinute) {
boolean isPM = (hourOfDay >= 12);
timetxt.setText(String.format("%02d:%02d %s", (hourOfDay == 12 || hourOfDay == 0) ? 12 : hourOfDay % 12, selectedMinute, isPM ? "PM" : "AM"));
}
}, hour, minute, false);//Yes 24 hour time
mTimePicker.setTitle("Select Time");
mTimePicker.show();
}
});
okbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(datetxt.toString().length()<2){
Toast.makeText(ProcessDetails.this, "Plese fill reschedule date", Toast.LENGTH_SHORT).show();
}else if(timetxt.toString().length()<2){
Toast.makeText(ProcessDetails.this, "Plese fill reschedule time", Toast.LENGTH_SHORT).show();
} else {
viewModel.rescheduleService(datetxt.getText().toString(),timetxt.getText().toString());
}
// Close dialog
dialog.dismiss();
}
});
dialog.show();
}
}
有解决方案吗？