app unforunatly stopped on data parsing on intent

app unforunatly stopped on data parsing on intent - java

I am getting a run time error "RemindMe is unfortunately stopped" on AddReminder activity when I passed a username from logging activity to Menu then attempt to add reminder activity, it unfortunately stops. Also logcat is not showing me anything (its empty).
Loging.XML
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="com.example.champ.remindme2.Login"
android:background="#drawable/back">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView2"
android:src="#drawable/remind_me_logo"
android:contentDescription="Logo" />
<EditText
android:id="#+id/edtitem"
android:layout_width="265dp"
android:layout_height="wrap_content"
android:padding="10dip"
android:background="#drawable/username_rounded_edited_text"
android:inputType="text"
android:hint="Username"
android:textAlignment="center"
android:layout_marginTop="37dp"
android:layout_below="#+id/imageView2"
android:layout_centerHorizontal="true" />
<EditText
android:id="#+id/password"
android:layout_width="265dp"
android:layout_height="wrap_content"
android:padding="10dip"
android:background="#drawable/pass_rounded_edited_text"
android:inputType="text"
android:hint="Password"
android:textAlignment="center"
android:layout_below="#+id/edtitem"
android:layout_centerHorizontal="true" />
<Button
android:id="#+id/LoginButton"
android:background="#drawable/blue_botton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Login"
style="#style/ButtonText"
android:onClick="Login"
android:layout_below="#+id/password"
android:layout_alignLeft="#+id/password"
android:layout_alignStart="#+id/password"
android:layout_alignRight="#+id/password"
android:layout_alignEnd="#+id/password" />
<Button
android:id="#+id/txtSignup"
android:background="#drawable/blue_botton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Signup"
style="#style/ButtonText"
android:onClick="Signup"
android:layout_below="#+id/LoginButton"
android:layout_alignLeft="#+id/LoginButton"
android:layout_alignStart="#+id/LoginButton" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView3"
android:src="#drawable/fb_loging"
android:layout_alignBottom="#+id/txtSignup"
android:layout_toRightOf="#+id/txtSignup"
android:layout_toEndOf="#+id/txtSignup" />
</RelativeLayout>
Loging.java
public class Login extends AppCompatActivity {
EditText ed1Username, ed2Pass;
String Username;
int counter=3;
Button LoginButton;
// TextView txtAttempts;
//private final int interval = 3000;
/*private Runnable runnable = new Runnable(){
public void run() {
LoginButton.setEnabled(true);
}
}; */
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
LoginButton= (Button)findViewById(R.id.LoginButton);
ed1Username=(EditText)findViewById(R.id.edtitem);
Username=ed1Username.getText().toString();
ed2Pass=(EditText)findViewById(R.id.password);
}
public void Login(View v){
if (ed1Username.getText().toString().equals("Admin") && ed2Pass.getText().toString().equals("123")){
Toast.makeText(Login.this, "Login Successful", Toast.LENGTH_LONG).show();
Intent intent = new Intent(this, Menu.class);
intent.putExtra("Username",Username);
startActivity(intent);
}
else {
Toast.makeText(Login.this, "Login Failed", Toast.LENGTH_LONG).show();
counter--;
}
// txtAttempts.setText("Attempts Left: " + counter);
if (counter == 0) {
LoginButton.setEnabled(false);
// new Timer().schedule((TimerTask) runnable,interval);
}
}
public void Signup(View v) {
Intent intent = new Intent(this, signup.class);
startActivity(intent);
}
}
Menu.XML
<?xml version="1.0" encoding="utf-8"?>
<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="#drawable/back"
tools:context="com.example.champ.remindme2.Menu">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView4"
android:src="#drawable/remind_me_logo"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginTop="5dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add Reminder"
android:id="#+id/button"
android:onClick="addReminder"
android:layout_below="#+id/imageView4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="32dp"
android:layout_marginStart="32dp"
android:layout_marginTop="49dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="View List"
android:id="#+id/button2"
android:layout_alignTop="#+id/button"
android:layout_toRightOf="#+id/button"
android:layout_toEndOf="#+id/button"
android:layout_marginLeft="32dp"
android:layout_marginStart="32dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add Shop"
android:id="#+id/button3"
android:layout_centerVertical="true"
android:layout_alignLeft="#+id/button"
android:layout_alignStart="#+id/button" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="View profile"
android:id="#+id/button4"
android:layout_alignTop="#+id/button3"
android:layout_alignLeft="#+id/button2"
android:layout_alignStart="#+id/button2" />
</RelativeLayout>
Menu.java
public class Menu extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
}
public void addReminder(View v) {
Intent intent = new Intent(this, AddReminder.class);
String Username = intent.getExtras().getString("Username");
intent.putExtra("Username", Username);
startActivity(intent);
}
}
AddReminder.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="com.example.champ.remindme2.AddReminder"
android:background="#drawable/back">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView6"
android:src="#drawable/remind_me_logo"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="52dp" />
<EditText
android:id="#+id/edtitem"
android:layout_width="260dp"
android:layout_height="wrap_content"
android:padding="5dp"
android:background="#drawable/rounded_edited_text"
android:inputType="text"
android:textAlignment="center"
android:layout_alignBottom="#+id/plusButton"
android:layout_alignLeft="#+id/imageView6"
android:text="Add Item"
android:layout_alignTop="#+id/plusButton" />
<Button
android:id="#+id/plusButton"
android:background="#drawable/blue_botton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="+"
style="#style/ButtonText"
android:onClick="plus"
android:layout_below="#+id/imageView6"
android:layout_alignParentRight="true"
android:layout_alignLeft="#+id/NextButton"
android:layout_alignStart="#+id/NextButton" />
<ScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/scrollView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="47dp" />
<Button
android:id="#+id/NextButton"
android:background="#drawable/blue_botton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Next"
style="#style/ButtonText"
android:onClick="AddEventPlace"
android:layout_alignTop="#+id/BackButton"
android:layout_alignRight="#+id/imageView6" />
<Button
android:id="#+id/BackButton"
android:background="#drawable/blue_botton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Back"
style="#style/ButtonText"
android:onClick="Back"
android:layout_alignParentBottom="true"
android:layout_alignLeft="#+id/edtitem"
android:layout_alignStart="#+id/edtitem" />
</RelativeLayout>
AddReminder.java
public class AddReminder extends AppCompatActivity {
String item;
//Passing Value Through String
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_reminder);
EditText edtItem= (EditText)findViewById(R.id.edtitem);
item=edtItem.getText().toString();
}
public void AddEventPlace(View v){
Intent intent = new Intent(this, AddEventPlace.class);
String Username = intent.getExtras().getString("Username");
intent.putExtra("Username", Username);
intent.putExtra("item",item);
startActivity(intent);
}
}

Check my updated code, Hope it will help...
1) Updated Menu Activity -
public class Menu extends AppCompatActivity {
String username;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
username = getIntent().getStringExtras("Username");
}
public void addReminder(View v) {
Intent intent = new Intent(this, AddReminder.class);
intent.putExtra("Username", username);
startActivity(intent);
}
}
2) Updated AddReminder Activity -
public class AddReminder extends AppCompatActivity {
String item;
String username;
//Passing Value Through String
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_reminder);
EditText edtItem= (EditText)findViewById(R.id.edtitem);
item=edtItem.getText().toString();
username = getIntent().getStringExtras("Username");
}
public void AddEventPlace(View v){
Intent intent = new Intent(this, AddEventPlace.class);
intent.putExtra("Username", username);
intent.putExtra("item",item);
startActivity(intent);
}
}

Related

I am unable to refer to things inside my activity, like buttons, and radiogroups

so I am trying to create an activity, and then add onclick listeners to it, but it wont let me refer. So the moment I open this activity in my app, my app crashes, saying 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference'
I have no idea why this is happening. I have correctly names them in accordance with the xml file as well.
Please help.
public class SubtaskActivity extends AppCompatActivity {
EditText etSubtaskName;
Button btnDone;
RadioGroup radgrpPri, radgrpTime;
RadioButton radbtnPriHigh, radbtnPriMed, radbtnPriLow, radbtnTimeMore, radbtnTimeMed, radbtnTimeLess;
boolean priHigh, priMed, priLow, timeMore, timeMed, timeLess;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
btnDone = findViewById(R.id.btnDone);
radgrpPri = findViewById(R.id.radgrpPri);
radgrpTime = findViewById(R.id.radgrpTime);
radbtnPriHigh = findViewById(R.id.radbtnPriHigh);
radbtnPriMed = findViewById(R.id.radbtnPriMed);
radbtnPriLow = findViewById(R.id.radbtnPriLow);
radbtnTimeMore = findViewById(R.id.radbtnTimeMore);
radbtnTimeMed = findViewById(R.id.radbtnTimeMed);
radbtnTimeLess = findViewById(R.id.radbtnTimeLess);
etSubtaskName = findViewById(R.id.etSubtaskName);
radgrpPri.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (radbtnPriHigh.isChecked())
{
priHigh = true;
priLow = false;
priMed = false;
}
else if (radbtnPriMed.isChecked())
{
priHigh = false;
priLow = false;
priMed = true;
}
else if (radbtnPriLow.isChecked())
{
priHigh = false;
priLow = true;
priMed = false;
}
}
});
radgrpTime.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (radbtnTimeMore.isChecked())
{
timeMore = true;
timeMed = false;
timeLess = false;
}
else if (radbtnTimeMed.isChecked())
{
timeMore = false;
timeMed = true;
timeLess = false;
}
else if (radbtnTimeLess.isChecked())
{
timeMore = false;
timeMed = false;
timeLess = true;
}
}
});
btnDone.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String name = etSubtaskName.getText().toString().trim();
Intent intent = new Intent(SubtaskActivity.this, TaskInfo.class);
intent.putExtra("subtaskName", name);
intent.putExtra("priHigh", priHigh);
intent.putExtra("priMed", priMed);
intent.putExtra("priLow", priLow);
intent.putExtra("timeMore", timeMore);
intent.putExtra("timeMed", timeMed);
intent.putExtra("timeLess", timeLess);
startActivity(intent);
}
});
}
}
XML File :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/it"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:background="#color/background"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/background"
android:orientation="vertical">
<TextView
android:id="#+id/tvSubtaskPriorityHeading"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginTop="16dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:fontFamily="#font/roboto"
android:text="#string/priority_of_subtask"
android:textColor="#B8AEAE"
android:textSize="16sp" />
<RadioGroup
android:id="#+id/radgrpPri"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radbtnPriHigh"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_weight="1"
android:buttonTint="#color/red"
android:text="#string/high"
android:textColor="#color/white" />
<RadioButton
android:id="#+id/radbtnPriMed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:buttonTint="#color/yellow"
android:text="#string/medium"
android:textColor="#color/white" />
<RadioButton
android:id="#+id/radbtnPriLow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:buttonTint="#color/green"
android:text="#string/low"
android:textColor="#color/white" />
</RadioGroup>
<TextView
android:id="#+id/tvTimeWeightHeading"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginTop="32dp"
android:layout_marginRight="16dp"
android:layout_marginBottom="16dp"
android:fontFamily="#font/roboto"
android:text="#string/time_this_subtask_may_consume"
android:textColor="#B8AEAE"
android:textSize="16sp" />
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/floating_hint_time_minutes"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:hintTextAppearance="#style/FlotatingHintStyle">
<EditText
android:id="#+id/etSubtaskName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:ems="10"
android:fontFamily="#font/roboto"
android:hint="#string/name_your_subtask"
android:inputType="textPersonName"
android:maxLength="20"
android:textColor="#color/white"
android:textColorHint="#B8AEAE"
android:textSize="14sp" />
</com.google.android.material.textfield.TextInputLayout>
<RadioGroup
android:id="#+id/radgrpTime"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radbtnTimeMore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_weight="1"
android:buttonTint="#color/red"
android:text="#string/more"
android:textColor="#color/white" />
<RadioButton
android:id="#+id/radbtnTimeMed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:buttonTint="#color/yellow"
android:text="#string/medium"
android:textColor="#color/white" />
<RadioButton
android:id="#+id/radbtnTimeLess"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:buttonTint="#color/green"
android:text="#string/less"
android:textColor="#color/white" />
</RadioGroup>
</LinearLayout>
<Button
android:id="#+id/btnDone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="16dp"
android:layout_marginTop="32dp"
android:layout_marginRight="16dp"
android:gravity="center_horizontal"
android:text="#string/done"
app:backgroundTint="#color/orange_accent" />
</LinearLayout>

You didn't call in onCreate method setContentView(R.layout.youractivity). If you didn't, Android doesn't know what to render, so there are no views for you to provide.
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.youractivity);
}

just set your (xml)layout file to setContentView in onCreate()
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_layout);
}

java.lang.StringIndexOutOfBoundsException: error in Android

while I was testing my app using the virtual emulator (don't have a valid device where I can test), I found out a bug. That's the java.lang.StringIndexOutOfBoundsException: length=0; index=2 error, and it pops out when I click on an EditText and try to write in it. The EditText is set to appear when another button is clicked. Here is the XML:
<RelativeLayout 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"
tools:context="com.example.luca.cecco.activity.allergie"
android:padding="20dp"
android:orientation="vertical"
android:background="#drawable/possible4_bg">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hai allergie?"
android:fontFamily="sans-serif"
android:textAllCaps="true"
style="#style/BOLD"
android:textAlignment="center"
android:layout_gravity="center"
android:layout_marginTop="200dp"
android:background="#drawable/round_shape_btn"
android:textColor="#color/blank"
android:padding="10dp"
android:textSize="40sp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="105dp">
<Button
android:id="#+id/btn_allergia_si"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_marginLeft="120dp"
android:layout_marginRight="10dp"
android:background="#drawable/round_shape_clicked_btn"
android:fontFamily="sans-serif"
android:text="Sì"
android:textAllCaps="true"
style="#style/BOLD"
android:gravity="center"
android:textColor="#color/blank"
android:textSize="30sp" />
<Button android:id="#+id/btn_allergia_no"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:text="No"
style="#style/BOLD"
android:gravity="center"
android:background="#drawable/round_shape_clicked_btn"
android:fontFamily="sans-serif"
android:textAllCaps="true"
android:textColor="#color/blank"
android:textSize="30sp"
android:layout_marginLeft="110dp"/>
</LinearLayout>
<EditText android:id="#+id/allergia_si"
android:layout_width="285dp"
android:layout_height="wrap_content"
android:layout_marginTop="25dp"
android:layout_marginLeft="150dp"
android:hint="Inserisci qui le tue allergie"
android:textAlignment="center"
android:textSize="20sp"
android:textColorHint="#color/blank"
android:background="#drawable/round_shape_clicked_btn"
android:textAllCaps="true"
android:padding="5dp"/>
<Button android:id="#+id/btn_avanti3"
android:layout_marginTop="100dp"
android:layout_marginRight="30dp"
android:layout_width="110dp"
android:textColor="#color/blank"
android:layout_height="85dp"
android:text="Avanti"
android:gravity="center"
android:textAlignment="center"
android:textSize="20sp"
android:layout_gravity="end"
style="#style/AlertDialog.AppCompat"
android:background="#color/blue_button"
android:textStyle="bold"
android:textAllCaps="true"
android:fontFamily="sans-serif"
/>
</LinearLayout>
</RelativeLayout>
And here it is the Java class:
private Button btn_si;
private Button btn_no;
private EditText et_allergia;
private Button btn_avanti;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_allergie);
btn_si = (Button) findViewById(R.id.btn_allergia_si);
btn_no = (Button) findViewById(R.id.btn_allergia_no);
et_allergia = (EditText) findViewById(R.id.allergia_si);
btn_avanti = (Button) findViewById(R.id.btn_avanti3);
et_allergia.setVisibility(View.INVISIBLE);
btn_no.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
btn_no.setBackground(getResources().getDrawable(R.drawable.round_shape_clicked_btn)); //cambia il colore di base
}
});
btn_si.setOnClickListener(new View.OnClickListener() { //cambia il colore di base e rende visibile l'edit text
#Override
public void onClick(View view)
{
btn_si.setBackground(getResources().getDrawable(R.drawable.round_shape_clicked_btn)); //cambia il colore di base
et_allergia.setVisibility(View.VISIBLE);
}
});
btn_avanti.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
Intent intent = new Intent(allergie.this, Preferenze.class);
startActivity(intent);
}
});
}

You are getting error Because, You have set property 'textAllCaps' in EditText. This property is mostly used for TextView.
Remove This Property and try again.

TextInputLayout: EditText added is not a TextInputEditText. Please switch to using that class instead

Always getting this warning TextInputLayout: EditText added is not a TextInputEditText. Please switch to using that class instead. and not finishing Activity for First time. On Second time not getting an warning and activity finishing perfectly.
activity_login.xml
<LinearLayout
android:id="#+id/ll_login_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center_horizontal"
android:orientation="vertical"
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:visibility="visible">
<android.support.design.widget.TextInputLayout
android:id="#+id/email_field"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="16dp"
android:hint="#string/email_phone"
android:paddingTop="48dp">
<android.support.v7.widget.AppCompatEditText
android:id="#+id/et_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:inputType="textEmailAddress"
android:paddingEnd="0dp"
android:paddingStart="8dp" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="#+id/password_field"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/password"
android:paddingBottom="16dp">
<android.support.v7.widget.AppCompatEditText
android:id="#+id/et_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:inputType="textPassword"
android:paddingEnd="0dp"
android:paddingStart="8dp" />
</android.support.design.widget.TextInputLayout>
<Button
android:id="#+id/btn_login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="#dimen/button_login_social_margin"
android:layout_marginStart="#dimen/button_login_social_margin"
android:layout_marginBottom="#dimen/activity_vertical_margin"
android:text="#string/login"
android:textColor="#android:color/black" />
</LinearLayout>
LoginActivity.java
public class LoginActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
final AppCompatEditText etEmailOrPh = (AppCompatEditText) findViewById(R.id.et_email);
final AppCompatEditText etPassword = (AppCompatEditText) findViewById(R.id.et_password);
final Button btnLogin = (Button) findViewById(R.id.btn_login);
assert etEmailOrPh != null;
assert etPassword != null;
assert btnLogin != null;
btnLogin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String emailOrPhone = etEmailOrPh.getText().toString().trim();
String password = etPassword.getText().toString().trim();
if(emailOrPhone.isEmpty()){
etEmailOrPh.setError(getResources().getString(R.string.email_phone_mandatory));
etEmailOrPh.requestFocus();
} else if(emailOrPhone.contains("#") && CommonUtil.isValidEmail(emailOrPhone)) {
etEmailOrPh.setError(getResources().getString(R.string.email_error));
etEmailOrPh.requestFocus();
} else if(password.isEmpty()) {
etPassword.setError(getResources().getString(R.string.password_mandatory));
etPassword.requestFocus();
} else {
SharedPreferences cache = LoginActivity.this.getSharedPreferences(Constants.SHARED_PREF_NAME, Context.MODE_PRIVATE);
final SharedPreferences.Editor preferenceEditor = cache.edit();
preferenceEditor.putInt(Constants.SHARED_PREF_ITEM_USER_ID, 1);
preferenceEditor.apply();
setResult(RESULT_OK);
finish();
}
}
});
}
}

Change this EditText
android.support.v7.widget.AppCompatEditText
to this
android.support.design.widget.TextInputEditText
Full Code :
<android.support.design.widget.TextInputLayout
android:id="#+id/email_field"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="16dp"
android:hint="#string/email_phone"
android:paddingTop="48dp">
<android.support.design.widget.TextInputEditText
android:id="#+id/et_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:inputType="textEmailAddress"
android:paddingEnd="0dp"
android:paddingStart="8dp"
/>
</android.support.design.widget.TextInputLayout>

Try not using
<android.support.v7.widget.AppCompatEditText
instead use
<EditText
So you will get:
<EditText
android:id="#+id/et_email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:inputType="textEmailAddress"
android:paddingEnd="0dp"
android:paddingStart="8dp" />
After doing a bit of research on the issue i found this post:
EditText added is not a TextInputEditText. Please switch to using that class instead
let me know if it helps you.

Why am I unable to get a Dialog when clicking the image?

I want the user to choose that whether they'd like to take picture or choose one from gallery.
I set up an OnClickListener on my Image but when I'm clicking the image, nothing is happening.
Here is my SettingUpUserProfile.java file's code:
public class SettingUpUserProfile extends AppCompatActivity {
public static final int TAKE_PHOTO_REQUEST = 0;
protected ImageView userProfilePicture;
#Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_setting_up_user_profile);
userProfilePicture = (ImageView) findViewById(R.id.userProfilePicture);
userProfilePicture.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(SettingUpUserProfile.this);
builder.setTitle(null);
builder.setItems(R.array.pickImage_options, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int position) {
switch (position) {
case 0:
Intent intentCaptureFromCamera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intentCaptureFromCamera, TAKE_PHOTO_REQUEST);
break;
case 1:
// Choose from gallery.
}
}
});
}
});
}
}
and here is my activity_setting_up_user_profile.xml file's code:
<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:background="#color/light_purple"
tools:context="com.abc.xyz.SettingUpUserProfile">
<TextView
android:id="#+id/settingUpUserProfileText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:text="#string/settingUpUserProfileText1"
android:textColor="#color/white"
android:textStyle="bold"
android:textSize="30sp"
android:gravity="center_horizontal|center_vertical"/>
<ImageView
android:id="#+id/userProfilePicture"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/settingUpUserProfileText1"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginTop="100dp"
android:clickable="true"
android:src="#drawable/ic_face_white_48dp" />
<TextView
android:id="#+id/settingUpUserProfileText2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userProfilePicture"
android:layout_marginTop="5dp"
android:text="#string/settingUpUserProfileText2"
android:textColor="#color/white"
android:textSize="15sp"
android:gravity="center_horizontal|center_vertical"/>
<EditText
android:id="#+id/userName"
android:background="#drawable/phone_number_edit_text_design"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/settingUpUserProfileText2"
android:layout_marginTop="80dp"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_marginRight="10dp"
android:layout_marginEnd="10dp"
android:gravity="center_horizontal|center_vertical"
android:hint="#string/hint_userName"
android:textColor="#color/white"
android:textColorHint="#E0E0E0"
android:textCursorDrawable="#null"
android:inputType="textPersonName"/>
<Button
android:id="#+id/buttonAllSet"
android:background="#color/white"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/userName"
android:layout_marginTop="20dp"
android:text="#string/button_allSet"
android:textStyle="bold"
android:textColor="#color/light_purple"
android:layout_marginEnd="120dp"
android:layout_marginStart="120dp"
android:gravity="center_horizontal|center_vertical"/>
</RelativeLayout>
I'm really unable to figure out what is wrong here.
Kindly, let me know.
I'm new to StackOverflow so please cooperate.
Thanks in advance.

Add Below lines to your onClick() method
AlertDialog alertDialog = builder.create();
alertDialog.show();

EditText is declared and LogCat is still giving nullpointerexception

Ok, so I am getting a nullpointerexception in logcat when I am running my app, however I looked at other StackOverflow questions that were similar to mine and found that I had done everything right, so where is my error coming from?
here is my MainActivity:
public double inchSnow, durationStorm, peakSnow, peakTime, finalSnow, windSpeed, snowGround, result, avgSnow;
EditText inSnow, durnStorm, pSnow, pTime, fSnow, wSpeed, sGround;
protected void onCreate(Bundle savedInstanceState) {
final AlertDialog.Builder invalidNumber = new AlertDialog.Builder(actContext);
invalidNumber.setTitle("Blank Field!");
invalidNumber.setMessage("Seems like a field has been left blank, can you fix it?");
invalidNumber.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.cancel();
}
});
inSnow = (EditText) findViewById(R.id.inchesSnow);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getZip = (Button) findViewById(R.id.calculate);
final Intent intent = new Intent(this, com.boreas.snowdaycalculator.result.class);
getZip.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
try{
inchSnow = new Integer(inSnow.getText().toString()).intValue();
}catch (NumberFormatException ex){
final AlertDialog alertDialog = invalidNumber.create();
invalidNumber.show();
}
Intent myIntent = new Intent(MainActivity.this, result.class);
myIntent.putExtra("inchSnow",inchSnow);
startActivity(myIntent);
}
});
}
My MainActivity 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="521dp"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".MainActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/scrollView"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="520px"
android:layout_alignTop="#+id/scrollView"
android:layout_alignLeft="#+id/scrollView">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="#+id/inchesSnow"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:hint="Inches of Snow"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="#+id/durationStorm"
android:layout_below="#+id/inchesSnow"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:hint="Duration of Storm"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="#+id/peakRate"
android:layout_below="#+id/durationStorm"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:hint="Peak Snow Rate"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="#+id/peakRateTime"
android:layout_below="#+id/peakRate"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:hint="Time of Peak Snow Rate"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberSigned"
android:ems="10"
android:id="#+id/finalRate"
android:layout_below="#+id/peakRateTime"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:hint="Final Snow Rate"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberSigned"
android:ems="10"
android:id="#+id/windSpeed"
android:layout_below="#+id/finalRate"
android:layout_alignParentLeft="true"
android:hint="Wind Speed"
android:layout_alignParentRight="true"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="numberDecimal"
android:ems="10"
android:id="#+id/snowGround"
android:layout_below="#+id/windSpeed"
android:layout_alignParentLeft="true"
android:hint="Snow Already on Ground"
android:layout_alignParentRight="true"/>
</RelativeLayout>
</ScrollView>
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Calculate Chances"
android:id="#+id/calculate"
android:layout_marginBottom="150dp"
android:layout_alignBottom="#+id/scrollView"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
Anyone have any ideas on what I am doing wrong? Thanks.

You need to place
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
before all other calls in method. findViewById() will return null until you set the content view. And more importantly, super.onCreate(savedInstanceState) will create the activity to work with.

Put the line:
inSnow = (EditText) findViewById(R.id.inchesSnow);
after the line:
setContentView(R.layout.activity_main);

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Why am I unable to get a Dialog when clicking the image?

EditText is declared and LogCat is still giving nullpointerexception

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