DatePickerDialog issue with fragments

DatePickerDialog issue with fragments - java

I have a fragment with editText that is meant to open a date picker. I have done everything seemingly correctly, however I can't figure out why I get the following error.
It has something to do with the fact that I'm working with a fragment.
Could you please help with this error?
EditProfileFragment.java
import android.app.DatePickerDialog;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.DatePicker;
import com.archive.pod.R;
import com.google.android.material.textfield.TextInputEditText;
import java.util.Calendar;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.DialogFragment;
import androidx.fragment.app.Fragment;
public class EditProfileFragment extends Fragment {
//Initializing
private TextInputEditText mDisplayDate;
private DatePickerDialog.OnDateSetListener mDateSetListener;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_editprofile, container, false);
//EditText
mDisplayDate = view.findViewById(R.id.etDateOfBirth);
//Date picker dialog box
mDisplayDate.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH);
int day = cal.get(Calendar.DAY_OF_MONTH);
DatePickerDialog dialog = new DatePickerDialog(
requireContext(),
android.R.style.Theme_DeviceDefault_Dialog_MinWidth,
mDateSetListener,
year, month, day);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
dialog.show();
}
});
mDateSetListener = new DatePickerDialog.OnDateSetListener() {
#Override
public void onDateSet(DatePicker datePicker, int year, int month, int day) {
month = month + 1;
String date = month + "/" + day + "/" + year;
mDisplayDate.setText(date);
}
};
return view;
}
}
Error Log
/AndroidRuntime: FATAL EXCEPTION: main
Process: com.archive.pod, PID: 20399
java.lang.ClassCastException: com.google.android.material.textfield.TextInputLayout cannot be cast to com.google.android.material.textfield.TextInputEditText
at com.archive.pod.Profile.EditProfileFragment.onCreateView(EditProfileFragment.java: 33)
at androidx.fragment.app.Fragment.performCreateView(Fragment.java: 2600)
at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java: 881)
at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManagerImpl.java: 1238)
at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java: 434)
Fragment Layout
<merge
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="20dp">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/userProfilePicture"
android:src="#drawable/ic_profile_picture_default"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginTop="20dp"
android:layout_centerHorizontal="true" />
<ImageButton
android:id="#+id/changeUserPhoto"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginTop="90dp"
android:layout_marginLeft="200dp"
android:layout_marginStart="200dp"
android:elevation="10dp"
android:background="#drawable/ic_add_circle"/>
<RelativeLayout
android:id="#+id/sectionTitle1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/changeUserPhoto"
android:layout_marginTop="50dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAllCaps="true"
android:textSize="12sp"
android:textColor="#color/label"
android:text="Primary Information"/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/relLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_below="#+id/sectionTitle1">
<!-- Full name input -->
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/etFullname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textNoSuggestions"
app:errorEnabled="true">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/full_name" />
</com.google.android.material.textfield.TextInputLayout>
<!-- Email input -->
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/etEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/etFullname"
app:errorEnabled="true">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/emailAddress"
android:inputType="textEmailAddress"/>
</com.google.android.material.textfield.TextInputLayout>
</RelativeLayout>
<RelativeLayout
android:id="#+id/sectionTitle2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/relLayout1"
android:layout_marginTop="20dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAllCaps="true"
android:textSize="12sp"
android:textColor="#color/label"
android:text="Private Information"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/sectionTitle2">
<!-- Phone number input -->
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/etPhoneNumber"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:focusable="false"
android:longClickable="false"
android:focusableInTouchMode="false"
app:errorEnabled="true">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/phone_number"
android:inputType="date"/>
</com.google.android.material.textfield.TextInputLayout>
<!-- Date of birth input -->
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/etDateOfBirth"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/etPhoneNumber"
android:focusable="false"
android:longClickable="false"
android:focusableInTouchMode="false"
app:errorEnabled="true">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/dob"
android:inputType="date"/>
</com.google.android.material.textfield.TextInputLayout>
</RelativeLayout>
</RelativeLayout>
</ScrollView>
</merge>

It just tells you that the first parameter of the DatePickerDialog constructor is not as supposed to be; where you put a Fragment, while it expects a context, so replace below line
DatePickerDialog dialog = new DatePickerDialog(
EditProfileFragment.this,
android.R.style.Theme_DeviceDefault_Dialog_MinWidth,
mDateSetListener,
year, month, day);
with
DatePickerDialog dialog = new DatePickerDialog(
requireContext(),
android.R.style.Theme_DeviceDefault_Dialog_MinWidth,
mDateSetListener,
year, month, day);

Use getapplicationcontext() and remove Edittextprofilefragment.this

Related

When android emulator runs it shows blank screen

I created an activity to edit some data by clicking the edit button it will send the key of it to another activity. All of my activity works normally except this particular one that does not show anything other than blank screen.
These are my codes where the problem occured.
jadual_Activity_EditSlot_Pengajar.java
package com.example.karismatuitioncentre.jadual.j_pengajar;
import android.app.TimePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.text.format.DateFormat;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import com.example.karismatuitioncentre.R;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
public class Jadual_Activity_EditSlot_Pengajar extends AppCompatActivity {
EditText et_editSlot_subjek,et_editSlot_pengajar;
Button btn_editSlot_submit,btn_editSlot_back;
TextView tvTimeBeforeSet,tvTimeAfterSet,tvEditSlot_masaStart,tvEditSlot_masaEnd,tvSubjectSet,tvPengajarSet;
int t1Hour,t1Minute,t2Hour,t2Minute;
protected void OnCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hari_editslot_pengajar);
String day_key=getIntent().getStringExtra("day_key");
String slot_key=getIntent().getStringExtra("slot_key");
tvSubjectSet= findViewById(R.id.tvSubjectSet);
tvPengajarSet= findViewById(R.id.tvPengajarSet);
tvTimeBeforeSet= findViewById(R.id.tvTimeBeforeSet);
tvTimeAfterSet= findViewById(R.id.tvTimeAfterSet);
et_editSlot_subjek= findViewById(R.id.et_editSlot_subjek);
et_editSlot_pengajar= findViewById(R.id.et_editSlot_pengajar);
tvEditSlot_masaStart= findViewById(R.id.tvEditSlot_masaStart);
tvEditSlot_masaEnd= findViewById(R.id.tvEditSlot_masaEnd);
btn_editSlot_submit= findViewById(R.id.btn_editSlot_submit);
FirebaseDatabase.getInstance().getReference().child(day_key).child(slot_key).addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
if (snapshot.exists()){
String SubjectSet= Objects.requireNonNull(snapshot.child("subjek").getValue()).toString();
String PengajarSet= Objects.requireNonNull(snapshot.child("pengajar").getValue()).toString();
String HourBeforeSet= Objects.requireNonNull(snapshot.child("masaSHour").getValue()).toString();
String MinuteBeforeSet= Objects.requireNonNull(snapshot.child("masaSMin").getValue()).toString();
String HourAfterSet= Objects.requireNonNull(snapshot.child("masaEHour").getValue()).toString();
String MinuteAfterSet= Objects.requireNonNull(snapshot.child("masaEMin").getValue()).toString();
int startH=Integer.parseInt(HourBeforeSet);
int startM=Integer.parseInt(MinuteBeforeSet);
int endH=Integer.parseInt(HourAfterSet);
int endM=Integer.parseInt(MinuteAfterSet);
tvSubjectSet.setText(SubjectSet);
tvPengajarSet.setText(PengajarSet);
Calendar calendar = Calendar.getInstance();
calendar.set(0,0,0,startH,startM);
tvTimeBeforeSet.setText(DateFormat.format("hh:mm aa",calendar));
Calendar calendar1 = Calendar.getInstance();
calendar1.set(0,0,0,endH,endM);
tvTimeAfterSet.setText(DateFormat.format("hh:mm aa",calendar1));
}
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
}
});
tvEditSlot_masaStart.setOnClickListener(view -> {
TimePickerDialog timePickerDialog=new TimePickerDialog(
Jadual_Activity_EditSlot_Pengajar.this,
(view1, hourOfDay, minute) -> {
t1Hour=hourOfDay;
t1Minute=minute;
Calendar calendar = Calendar.getInstance();
calendar.set(0,0,0,t1Hour,t1Minute);
tvEditSlot_masaStart.setText(DateFormat.format("hh:mm aa",calendar));
},12,0,false
);
timePickerDialog.updateTime(t1Hour,t1Minute);
timePickerDialog.show();
});
tvEditSlot_masaEnd.setOnClickListener(view -> {
TimePickerDialog timePickerDialog=new TimePickerDialog(
Jadual_Activity_EditSlot_Pengajar.this,
(view1, hourOfDay, minute) -> {
t2Hour=hourOfDay;
t2Minute=minute;
Calendar calendar = Calendar.getInstance();
calendar.set(0,0,0,t2Hour,t2Minute);
tvEditSlot_masaEnd.setText(DateFormat.format("hh:mm aa",calendar));
},12,0,false
);
timePickerDialog.updateTime(t2Hour,t2Minute);
timePickerDialog.show();
});
btn_editSlot_submit.setOnClickListener(view -> {
Map<String,Object> map=new HashMap<>();
map.put("subjek",et_editSlot_subjek.getText().toString());
map.put("pengajar",et_editSlot_pengajar.getText().toString());
map.put("masaSHour",t1Hour);
map.put("masaEHour",t2Hour);
map.put("masaSMin",t1Minute);
map.put("masaEMin",t2Minute);
FirebaseDatabase.getInstance().getReference().child(day_key).child(slot_key)
.setValue(map)
.addOnSuccessListener(aVoid -> {
et_editSlot_subjek.setText("");
et_editSlot_pengajar.setText("");
Toast.makeText(getApplicationContext(),"Penambahan berjaya",Toast.LENGTH_LONG).show();
Intent intent = new Intent(getApplicationContext(), Jadual_Activity_ViewSchedule_Pengajar_Test.class);
intent.putExtra("day_key", day_key);
startActivity(intent);
finish();
})
.addOnFailureListener(e -> Toast.makeText(getApplicationContext(),"Tidak Berjaya",Toast.LENGTH_LONG).show());
});
}
}
activity_hari_editslot_pengajar.java
<?xml version="1.0" encoding="utf-8"?>
<androidx.appcompat.widget.LinearLayoutCompat xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:background="#drawable/whitebg">
<TextView
android:id="#+id/tvSubjectSet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:text="TextView"
android:textSize="20sp" />
<EditText
android:id="#+id/et_editSlot_subjek"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:layout_marginBottom="15dp"
android:hint="Nama Subjek"
android:inputType="text"
android:textColor="#000"
android:textColorHint="#95150D0D"
android:textSize="20sp" />
<TextView
android:id="#+id/tvPengajarSet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textSize="20sp" />
<EditText
android:id="#+id/et_editSlot_pengajar"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:layout_marginBottom="15dp"
android:hint="Nama Pengajar"
android:inputType="text"
android:textColor="#000"
android:textColorHint="#95150D0D"
android:textSize="20sp" />
<TextView
android:id="#+id/tvTimeBeforeSet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textSize="20sp" />
<TextView
android:id="#+id/tvEditSlot_masaStart"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:layout_marginBottom="15dp"
android:background="#4BA8E697"
android:drawablePadding="16dp"
android:gravity="center"
android:hint="Waktu Kelas Bermula"
android:textColorHint="#95150D0D"
android:textSize="20sp"
android:textStyle="italic"
app:drawableTopCompat="#drawable/ic_time" />
<TextView
android:id="#+id/tvTimeAfterSet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textSize="20sp" />
<TextView
android:id="#+id/tvEditSlot_masaEnd"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:layout_marginBottom="15dp"
android:background="#68CDB1B0"
android:drawablePadding="16dp"
android:gravity="center"
android:hint="Waktu Kelas Tamat"
android:textColorHint="#95150D0D"
android:textSize="20sp"
android:textStyle="italic"
app:drawableTopCompat="#drawable/ic_time" />
<Button
android:id="#+id/btn_editSlot_submit"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="15dp"
android:background="#1E88E5"
android:text="Hantar"
android:textColor="#F6F6F6"
android:textSize="20sp" />
<Button
android:id="#+id/btn_editSlot_back"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:background="#00ACC1"
android:text="Kembali"
android:textColor="#FFFFFF"
android:textSize="20sp" />
</androidx.appcompat.widget.LinearLayoutCompat>

How do I create a fragment template(class with variables and methods, layout) for multiple fragments with the same content?

On the main screen I have 7 buttons (days) and a fragment.
For every day of the week I wanted to generate a fragment with some EditTexts and a ListView, but creating 7 fragments with the same layout and almost the same class content seems too repetitive.
I only did it for Monday and Tuesday.
The only difference between MondayFragment and TuesdayFragment is that in TuesdayFragment I renamed the variable mondayTV to tuesdayTV and in layout I changed the ids of the submit button and the ListView. Also the key for Bundle is different. I don't think it's worth posting it since it's so similar to MondayFragment.
I want to know if it's possible to create a fragment template and use it to generate a fragment for every button of the activity given this code I wrote. There is still a lot to work on when it comes to functionality but I can't get this idea out of my head.
MainActivity.java
package com.example.dietmanagement;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
public Button monday, tuesday, wednesday, thursday, friday, saturday, sunday;
final MondayFragment mondayFragment = new MondayFragment();
final TuesdayFragment tuesdayFragment = new TuesdayFragment();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*Intent i = getIntent();
String current_user = i.getStringExtra("current_user");
TextView current_user_txtview = findViewById(R.id.current_user);
current_user_txtview.setText("Welcome, " + current_user);*/
monday = (Button)findViewById(R.id.monday_btn);
tuesday = (Button)findViewById(R.id.tuesday_btn);
wednesday = (Button)findViewById(R.id.wednesday_btn);
thursday = (Button)findViewById(R.id.thursday_btn);
friday = (Button)findViewById(R.id.friday_btn);
saturday = (Button)findViewById(R.id.saturday_btn);
sunday = (Button)findViewById(R.id.sunday_btn);
monday.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
openFragment(mondayFragment);
getDay(mondayFragment, "monday", (String) monday.getContentDescription());
}
});
tuesday.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
openFragment(tuesdayFragment);
getDay(tuesdayFragment, "tuesday", (String) tuesday.getContentDescription());
}
});
}
private void openFragment(final Fragment fragment){
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(R.id.daysfragment, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
public void getDay(final Fragment fragment, String key, String value)
{
Bundle bnd = new Bundle();
bnd.putString(key, value);
fragment.setArguments(bnd);
}
}
Activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background_green"
tools:context=".MainActivity">
<Button
android:id="#+id/tuesday_btn"
android:layout_width="70dp"
android:layout_height="70dp"
android:background="#drawable/button_states"
android:contentDescription="#string/tuesday_context"
android:text="#string/tuesday"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.194"
app:layout_constraintStart_toEndOf="#+id/monday_btn"
app:layout_constraintTop_toBottomOf="#+id/main_title"
app:layout_constraintVertical_bias="0.017" />
<TextView
android:id="#+id/main_title"
android:layout_width="147dp"
android:layout_height="93dp"
android:fontFamily="sans-serif-medium"
android:text="#string/welcome_label"
android:textColor="#FFFFFF"
android:textSize="70sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.414"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.049" />
<Button
android:id="#+id/monday_btn"
android:layout_width="70dp"
android:layout_height="70dp"
android:background="#drawable/button_states"
android:contentDescription="#string/monday_context"
android:text="#string/monday"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.16"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/main_title"
app:layout_constraintVertical_bias="0.017" />
<Button
android:id="#+id/thursday_btn"
android:layout_width="70dp"
android:layout_height="70dp"
android:background="#drawable/button_states"
android:text="#string/thursday"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.018"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/main_title"
app:layout_constraintVertical_bias="0.172" />
<Button
android:id="#+id/sunday_btn"
android:layout_width="70dp"
android:layout_height="70dp"
android:background="#drawable/button_states"
android:text="#string/sunday"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="28sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.786"
app:layout_constraintStart_toEndOf="#+id/saturday_btn"
app:layout_constraintTop_toBottomOf="#+id/main_title"
app:layout_constraintVertical_bias="0.172" />
<Button
android:id="#+id/saturday_btn"
android:layout_width="70dp"
android:layout_height="70dp"
android:background="#drawable/button_states"
android:text="#string/saturday"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="28sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.225"
app:layout_constraintStart_toEndOf="#+id/friday_btn"
app:layout_constraintTop_toBottomOf="#+id/main_title"
app:layout_constraintVertical_bias="0.172" />
<Button
android:id="#+id/friday_btn"
android:layout_width="70dp"
android:layout_height="70dp"
android:background="#drawable/button_states"
android:text="#string/friday"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.137"
app:layout_constraintStart_toEndOf="#+id/thursday_btn"
app:layout_constraintTop_toBottomOf="#+id/main_title"
app:layout_constraintVertical_bias="0.172" />
<Button
android:id="#+id/wednesday_btn"
android:layout_width="70dp"
android:layout_height="70dp"
android:background="#drawable/button_states"
android:text="#string/wednesday"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.369"
app:layout_constraintStart_toEndOf="#+id/tuesday_btn"
app:layout_constraintTop_toBottomOf="#+id/main_title"
app:layout_constraintVertical_bias="0.017" />
<ImageView
android:id="#+id/logo"
android:layout_width="52dp"
android:layout_height="58dp"
android:layout_marginStart="8dp"
android:layout_marginTop="52dp"
android:contentDescription="#string/app_name"
app:layout_constraintStart_toEndOf="#+id/main_title"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_logo" />
<TextView
android:id="#+id/current_user"
android:layout_width="362dp"
android:layout_height="27dp"
android:text="#string/current_user"
android:textAlignment="viewEnd"
android:textSize="18sp"
app:layout_constraintBottom_toTopOf="#+id/main_title"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.938"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.318" />
<FrameLayout
android:id="#+id/daysfragment"
android:layout_width="match_parent"
android:layout_height="460dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MondayFragment.java
package com.example.dietmanagement;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
public class MondayFragment extends Fragment {
public TextView mondayTV;
public ArrayList<String> hour_food;
public ArrayAdapter<String> listViewAdapter;
public ListView listView;
public EditText input_meal;
public EditText input_time;
public Button submit;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_monday, container, false);
mondayTV = (TextView) v.findViewById(R.id.day);
Bundle bndMon = getArguments();
String day = bndMon.getString("monday");
mondayTV.setText(day);
hour_food = new ArrayList<String>();
listViewAdapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, hour_food);
listView = (ListView)v.findViewById(R.id.monday_list_item);
listView.setAdapter(listViewAdapter);
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
hour_food.remove(position);
Toast.makeText(getActivity(), "Meal Removed", Toast.LENGTH_SHORT).show();
listViewAdapter.notifyDataSetChanged();
return true;
}
});
input_meal = v.findViewById(R.id.input_meal);
input_time = v.findViewById(R.id.input_time);
submit = (Button) v.findViewById(R.id.submit_food_btn);
submit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(TextUtils.isEmpty(input_time.getText())) {
Toast.makeText(getActivity(), "Empty time input", Toast.LENGTH_SHORT).show();
} else if(TextUtils.isEmpty(input_meal.getText())){
Toast.makeText(getActivity(), "Empty meal input", Toast.LENGTH_SHORT).show();
}
else
{
hour_food.add(String.format("%s - %s", input_meal.getText().toString(), input_time.getText().toString()));
listViewAdapter.notifyDataSetChanged();
input_meal.setText("");
input_time.setText("");
}
}
});
return v;
}
}
fragment_monday.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background_green"
tools:context=".MondayFragment">
<TextView
android:id="#+id/day"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="24dp"
android:text="#string/day" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="#+id/input_time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autofillHints="#string/time"
android:hint="#string/time"
android:inputType="time" />
<EditText
android:id="#+id/input_meal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:autofillHints="#string/meal"
android:hint="#string/meal"
android:inputType="textAutoCorrect|textCapSentences" />
</LinearLayout>
<Button
android:id="#+id/submit_food_btn_monday"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/submit"
android:background="#color/white"
android:textColor="#color/background_green"
android:layout_gravity="end"
android:layout_marginTop="10dp"/>
<ListView
android:id="#+id/monday_list_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>
strings.xml

Create DayFragment and layout only for one day. Pass extra information for Fragment and handle situations for different days with that extra information (in your case it looks like only String from bundle is different).
fragment_day.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background_green">
<TextView
android:id="#+id/day"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="24dp"
android:text="#string/day" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<EditText
android:id="#+id/input_time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autofillHints="#string/time"
android:hint="#string/time"
android:inputType="time" />
<EditText
android:id="#+id/input_meal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:autofillHints="#string/meal"
android:hint="#string/meal"
android:inputType="textAutoCorrect|textCapSentences" />
</LinearLayout>
<Button
android:id="#+id/submit_food_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/submit"
android:background="#color/white"
android:textColor="#color/background_green"
android:layout_gravity="end"
android:layout_marginTop="10dp"/>
<ListView
android:id="#+id/list_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
DayFragment.java
public class DayFragment extends Fragment {
private TextView dayTV;
private ArrayList<String> hour_food;
private ArrayAdapter<String> listViewAdapter;
private ListView listView;
private EditText input_meal;
private EditText input_time;
private Button submit;
private String text;
public DayFragment(String text) {
this.text = text;
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_day, container, false);
dayTV = v.findViewById(R.id.day);
dayTV.setText(text);
hour_food = new ArrayList<>();
listViewAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1, hour_food);
listView = v.findViewById(R.id.list_item);
listView.setAdapter(listViewAdapter);
listView.setOnItemLongClickListener((parent, view, position, id) -> {
hour_food.remove(position);
Toast.makeText(getActivity(), "Meal Removed", Toast.LENGTH_SHORT).show();
listViewAdapter.notifyDataSetChanged();
return true;
});
input_meal = v.findViewById(R.id.input_meal);
input_time = v.findViewById(R.id.input_time);
submit = v.findViewById(R.id.submit_food_btn);
submit.setOnClickListener(v1 -> {
if (TextUtils.isEmpty(input_time.getText())) {
Toast.makeText(getActivity(), "Empty time input", Toast.LENGTH_SHORT).show();
} else if (TextUtils.isEmpty(input_meal.getText())) {
Toast.makeText(getActivity(), "Empty meal input", Toast.LENGTH_SHORT).show();
} else {
hour_food.add(String.format("%s - %s", input_meal.getText().toString(), input_time.getText().toString()));
listViewAdapter.notifyDataSetChanged();
input_meal.setText("");
input_time.setText("");
}
});
return v;
}
}
Use constructor for passing information.
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button monday = findViewById(R.id.monday_btn),
tuesday = findViewById(R.id.tuesday_btn),
wednesday = findViewById(R.id.wednesday_btn),
thursday = findViewById(R.id.thursday_btn),
friday = findViewById(R.id.friday_btn),
saturday = findViewById(R.id.saturday_btn),
sunday = findViewById(R.id.sunday_btn);
openFragment(monday);
openFragment(tuesday);
openFragment(wednesday);
openFragment(thursday);
openFragment(friday);
openFragment(saturday);
openFragment(sunday);
}
private void openFragment(Button btn) {
btn.setOnClickListener(v -> {
String contentDescription = btn.getContentDescription().toString();
getSupportFragmentManager().beginTransaction()
.replace(R.id.daysfragment, new DayFragment(contentDescription))
.addToBackStack(null)
.commit();
});
}
}
In MainActivity openFragment() method takes a Button parameter and with that Button and sets onClickListener to that Button. When you click any Button it gets content description from that Button and passing it to Fragment and opens that Fragment with that content description.

Android : Saving and Restoring Activity data when switching Portrait and Landscape

I am try to save my roll no and name in main activity but when my screen is rotated the activity data has been lose ,
finally i fixed it , below i adding source code

consider any layout , here i am using this layout structure
In activity_xml :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="20dp"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/rollnoID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"
android:text="Rollno : "
android:textSize="25dp" />
<EditText
android:hint="Roll Number"
android:id="#+id/rollnoID_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"
android:ems="8"
android:inputType="number"
android:text=""
android:textSize="25dp" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/nameID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"
android:text="Name : "
android:textSize="25dp" />
<EditText
android:hint="Student Name"
android:id="#+id/nameID_edit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_marginTop="10dp"
android:ems="8"
android:inputType="textCapWords"
android:text=""
android:textSize="25dp" />
</LinearLayout>
<Button
android:onClick="saveData"
android:id="#+id/saveButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="save this Data"
android:textSize="20sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="20dp"
android:padding="20dp"
android:orientation="vertical">
<TextView
android:gravity="center"
android:hint="~RollNo~"
android:textColor="#color/colorPrimary"
android:id="#+id/display_rollno"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="30sp" />
<TextView
android:layout_marginTop="20dp"
android:id="#+id/display_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:hint="~Name~"
android:textColor="#color/colorPrimary"
android:textSize="30sp" />
</LinearLayout>
</LinearLayout>
In MainActivity :
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private static final String KEY_ROLL = "rollno_key";
private static final String KEY_NAME = "name_key";
int rollno;
String name;
EditText roll_et , name_et;
TextView roll_tv , name_tv;
Button saveButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
roll_et = (EditText) findViewById(R.id.rollnoID_edit);
name_et = (EditText) findViewById(R.id.nameID_edit);
roll_tv = (TextView) findViewById(R.id.display_rollno);
name_tv = (TextView) findViewById(R.id.display_name);
if (savedInstanceState != null){
String save_RollNO = savedInstanceState.getString(KEY_ROLL);
roll_tv.setText(save_RollNO);
String save_Name = savedInstanceState.getString(KEY_NAME);
name_tv.setText(save_Name);
} else {
Toast.makeText(getApplicationContext(),"Entry your data",Toast.LENGTH_SHORT).show();
}
}
#Override
public void onSaveInstanceState(Bundle saveData) {
saveData.putString(KEY_ROLL , roll_et.getText().toString());
saveData.putString(KEY_NAME , name_et.getText().toString());
super.onSaveInstanceState(saveData);
}
public void saveData(View v){
roll_tv.setText(roll_et.getText().toString().trim());
name_tv.setText(name_et.getText().toString().trim());
}
}

Making android EditText vertical scrollable

I am new to Android development and I have an issue with making Android EditText vertically scroll able. The vertical scrolling of the EditText does not work for me. I followed several posts and resources but none of them worked for me.
I am using the following code sample to enable the vertical scroll ability.
this.detailsEditText.setScroller(new Scroller(this));
this.detailsEditText.setMaxLines(1);
this.detailsEditText.setVerticalScrollBarEnabled(true);
this.detailsEditText.setMovementMethod(new ScrollingMovementMethod());
The following are the activity class and layout resource file, respectively I am using in my app.
CreateAppointmentActivity.java
package lk.iit.appointmentmanagerapp.activities;
import java.sql.Date;
import java.sql.Time;
import lk.iit.appointmentmanagerapp.data.Appointment;
import lk.iit.appointmentmanagerapp.data.DatabaseHandler;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Scroller;
public class CreateAppointmentActivity extends Activity {
private EditText titleEditText;
private EditText timeEditText;
private EditText detailsEditText;
private EditText dateEditText;
private Button saveButton;
private Button resetButton;
private final DatabaseHandler handler = new DatabaseHandler(this);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_appointment);
this.titleEditText = (EditText)(this.findViewById(R.id.edit_title));
this.timeEditText = (EditText)(this.findViewById(R.id.edit_time));
this.detailsEditText = (EditText)(this.findViewById(R.id.edit_details));
this.dateEditText = (EditText)(this.findViewById(R.id.edit_date));
this.detailsEditText.setScroller(new Scroller(this));
this.detailsEditText.setMaxLines(1);
this.detailsEditText.setVerticalScrollBarEnabled(true);
this.detailsEditText.setMovementMethod(new ScrollingMovementMethod());
SharedPreferences preferences = getSharedPreferences("date_variables", MODE_PRIVATE);
this.dateEditText.setText(preferences.getInt("Year", 0) + "-" + preferences.getInt("Month", 0) + "-" + preferences.getInt("Day", 0));
this.dateEditText.setEnabled(false);
this.saveButton = (Button)(this.findViewById(R.id.save_new_appointment_button));
this.saveButton.setOnClickListener(new View.OnClickListener() {
#SuppressWarnings("deprecation")
#Override
public void onClick(View v) {
String[] dateComponents = dateEditText.getText().toString().split("-");
String[] timeComponents = timeEditText.getText().toString().split(":");
Appointment appointment = new Appointment();
appointment.setAppointment_title(titleEditText.getText().toString());
appointment.setAppointment_date(new Date(Integer.parseInt(dateComponents[0]), Integer.parseInt(dateComponents[1]), Integer.parseInt(dateComponents[2])));
appointment.setAppointment_time(new Time(Integer.parseInt(timeComponents[0]), Integer.parseInt(timeComponents[1]), Integer.parseInt(timeComponents[2])));
appointment.setAppointment_details(detailsEditText.getText().toString());
boolean inserted = handler.addAppointment(appointment);
//
//
}
});
this.resetButton = (Button)(this.findViewById(R.id.reset_button));
this.resetButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
titleEditText.setText("");
timeEditText.setText("");
detailsEditText.setText("");
dateEditText.setText("");
}
});
}
}
activity_create_appointment.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:background="#color/background"
tools:context="lk.iit.appointmentmanagerapp.activities.CreateAppointmentActivity" >
<TextView
android:id="#+id/create_activity_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/welcome_create"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dip"
android:layout_marginBottom="25dip"
android:textSize="18.5sp"
android:textColor="#ffffff" />
<TextView
android:id="#+id/title_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/create_activity_title"
android:layout_marginTop="15dip"
android:text="#string/title_textview_text"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/edit_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/create_activity_title"
android:layout_marginTop="15dip"
android:layout_toRightOf="#+id/title_textview"
android:layout_marginLeft="30dip"
android:background="#ffffff"
android:ems="10"
android:inputType="text" >
<requestFocus />
</EditText>
<TextView
android:id="#+id/time_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/title_textview"
android:layout_marginTop="25dip"
android:text="#string/time_textview_text"
android:textAppearance="?android:attr/textAppearanceMedium"
/>
<EditText
android:id="#+id/edit_time"
android:background="#ffffff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/time_textview"
android:layout_below="#+id/edit_title"
android:layout_marginLeft="25dip"
android:layout_marginTop="25dip"
android:ems="10"
android:inputType="time" />
<TextView
android:id="#+id/details_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/time_textview"
android:text="#string/details_textview_text"
android:layout_marginTop="25dip"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/edit_details"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/details_textview"
android:layout_alignBottom="#+id/details_textview"
android:layout_alignLeft="#+id/edit_title"
android:background="#ffffff"
android:ems="10"
android:inputType="text" >
</EditText>
<TextView
android:id="#+id/date_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/details_textview"
android:text="Date"
android:layout_marginTop="25dip"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="#+id/edit_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/date_textview"
android:layout_below="#+id/edit_details"
android:background="#ffffff"
android:layout_marginLeft="25dip"
android:layout_marginTop="25dip"
android:ems="10"
android:inputType="date" >
</EditText>
<Button
android:id="#+id/save_new_appointment_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/date_textview"
android:layout_marginTop="15dip"
android:layout_marginBottom="10dip"
android:layout_centerHorizontal="true"
android:text="#string/save_button_text"
android:textAllCaps="false" />
<Button
android:id="#+id/reset_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/save_new_appointment_button"
android:layout_marginTop="2dip"
android:layout_centerHorizontal="true"
android:text="#string/reset_button_text"
android:textAllCaps="false" />
</RelativeLayout>
Please bear with me if I have done any mistakes as I am relatively new to this area of development.
I would be grateful if someone help me out with this issue.

Try this in java code:
EditText dwEdit = (EditText) findViewById(R.id.DwEdit);
dwEdit.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View view, MotionEvent event) {
// TODO Auto-generated method stub
if (view.getId() ==R.id.DwEdit) {
view.getParent().requestDisallowInterceptTouchEvent(true);
switch (event.getAction()&MotionEvent.ACTION_MASK){
case MotionEvent.ACTION_UP:
view.getParent().requestDisallowInterceptTouchEvent(false);
break;
}
}
return false;
}
});
And in your xml:
<EditText
android:id="#+id/DwEdit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:minLines="10"
android:scrollbarStyle="insideInset"
android:scrollbars="vertical"
android:overScrollMode="always"
android:inputType="textCapSentences">
</EditText>

If you wanna scroll editText only in detailEditText then you specify height of editText 50dp or your need and remove inputType="text" from your editText ....it fulfill your need..
and you don't need any code in java relative to that editText..

i want to calculate the number and display results in textboxes of next screen layout in android

main activity.java
package abhilmohan.blogspot.com;
import android.R.string;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.app.ActionBar;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
public class MainActivity extends ActionBarActivity {
EditText amount1;
EditText amount2;
EditText amount3;
EditText amount4;
Button calculate;
double w=0;
double x=0;
double y=0;
double z=0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActionBar bar= getActionBar();
bar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#ff0000")));
}
public void initcontrols() {
amount1=(EditText)findViewById(R.id.editText1);
amount2=(EditText)findViewById(R.id.editText2);
amount3=(EditText)findViewById(R.id.editText3);
amount4=(EditText)findViewById(R.id.editText4);
calculate=(Button)findViewById(R.id.button1);
}
public void calculate() {
w=Double.parseDouble(amount1.getText().toString());
x=Double.parseDouble(amount2.getText().toString());
y=w/12;
amount3.setText(Double.toString(y));
z=w*x/100;
amount4.setText(Double.toString(z));
}
public void gotoactivity (View v) {
Intent intent = new Intent(this,ResultPage.class);
calculate();
startActivity(intent);
}
am not getting result while calling calculator() void method on button click.i want my results to be published in two textviews created in reulst_page layout
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
android:gravity="left"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="abhilmohan.blogspot.com.MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
style="#style/text_style"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="40dp"
android:layout_marginRight="40dp"
android:text="#string/ctc"
android:textAppearance="?android:attr/textAppearanceLarge" />
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="75dp"
android:layout_marginLeft="30dp"
android:layout_marginRight="20dp"
android:layout_marginTop="-15dp"
android:inputType="number"
android:background="#drawable/rounded_edit_text"
android:ems="10"
android:padding="20dp"
android:paddingBottom="50dp"
android:textColor="#000000" />
<TextView
android:id="#+id/textView2"
style="#style/text_style"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="90dp"
android:layout_marginLeft="40dp"
android:layout_marginTop="-30dp"
android:text="#string/TDS"
android:textAppearance="?android:attr/textAppearanceLarge" />
<EditText
android:id="#+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginTop="-70dp"
android:background="#drawable/rounded_edit_text"
android:inputType="number"
android:ems="10"
android:padding="20dp"
android:paddingBottom="50dp" >
<requestFocus />
</EditText>
<Button
android:id="#+id/button1"
android:layout_width="177dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="60dp"
android:background="#drawable/button_style"
android:text="#string/ok"
android:textColor="#ffffff"
android:onClick="gotoactivity" />
</LinearLayout>
</RelativeLayout>
resultpage.java
package abhilmohan.blogspot.com;
import android.support.v7.app.ActionBarActivity;
import android.view.MenuItem;
import android.app.ActionBar;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
public class ResultPage extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.result_page);
getActionBar().setDisplayHomeAsUpEnabled(true);
ActionBar bar= getActionBar();
bar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#ff0000")));
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if(item.getItemId()== android.R.id.home)
{
finish();
}
return super.onOptionsItemSelected(item);
}
}
result_page.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
style="#style/text_style"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="40dp"
android:layout_marginRight="40dp"
android:text="#string/amount"
android:textAppearance="?android:attr/textAppearanceLarge" />
<EditText
android:id="#+id/editText3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="75dp"
android:layout_marginLeft="30dp"
android:layout_marginRight="20dp"
android:layout_marginTop="-15dp"
android:background="#drawable/rounded_edit_text"
android:ems="10"
android:inputType="number"
android:padding="20dp"
android:paddingBottom="50dp"
android:textColor="#000000"
android:clickable="false"
android:cursorVisible="false"
android:focusable="false"
android:focusableInTouchMode="false" />
<TextView
android:id="#+id/textView2"
style="#style/text_style"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="90dp"
android:layout_marginLeft="40dp"
android:layout_marginTop="-30dp"
android:text="#string/tdsamount"
android:textAppearance="?android:attr/textAppearanceLarge" />
<EditText
android:id="#+id/editText4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:layout_marginTop="-70dp"
android:background="#drawable/rounded_edit_text"
android:ems="10"
android:inputType="number"
android:padding="20dp"
android:paddingBottom="50dp"
android:clickable="false"
android:cursorVisible="false"
android:focusable="false"
android:focusableInTouchMode="false" >
<requestFocus />
</EditText>
<Button
android:id="#+id/button2"
android:layout_width="177dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="60dp"
android:background="#drawable/button_style"
android:text="#string/rate"
android:textColor="#ffffff" />
</LinearLayout>

At the moment you are executing calculate() in the MainActivity.java second activity called ResultPage doesn't exist, therefore you can't change it's view (editText3and editText4).
In order to pass data to another activity you should fill your Intent with some extra data and then in your ResultPage activity's onCreate you would get underlying extras.
EDIT
MainActivity.java
public void gotoactivity (View v) {
calculate();
Intent intent = new Intent(this, ResultPage.class);
intent.putExtra("AMOUNT_3", y);
intent.putExtra("AMOUNT_4", z);
startActivity(intent);
}
ResultPage.java inside onCreate
Bundle extras = getIntent().getExtras();
if (extras != null) {
int amount3 = extras.getInt("AMOUNT_3");
int amount4 = extras.getInt("AMOUNT_4");
}

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