This question already has answers here:
How do I compare strings in Java?
(23 answers)
Closed 3 years ago.
I have some issues creating a login activity.
Even though I put the right username (123456) and password (123456789).
I made sure to put the getText() method inside onLogin but I always get the message "login failed" and so I assume I don't get any data from EditText, and so I can't see what's wrong.
this login java class:
public class LoginActivity extends AppCompatActivity {
private EditText UsernameEt;
private EditText PasswordEt;
AlertDialog alertDialog;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
UsernameEt=findViewById(R.id.username);
PasswordEt=findViewById(R.id.password);
alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle("Login Status");
}
public void onLogin(View view) {
String username = UsernameEt.getText().toString();
String password = PasswordEt.getText().toString();
String type = "login";
//BackgroundWorker backgroundWorker = new BackgroundWorker(this);
//backgroundWorker.execute(type, username, password);
if(username=="123456" && password=="123456789"){
alertDialog.setMessage("Login success");
alertDialog.show();
} else {
alertDialog.setMessage("Login failed");
alertDialog.show();
}
}
}
and this is the login xml:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="#drawable/bg"
android:fitsSystemWindows="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="vertical">
<EditText
android:id="#+id/username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:backgroundTint="#FFFFFF"
android:drawableLeft="#drawable/ic_person_black_24dp"
android:ems="10"
android:hint="IPN"
android:inputType="textPersonName"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF" />
<EditText
android:id="#+id/password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:backgroundTint="#FFFFFF"
android:drawableLeft="#drawable/ic_lock_black_24dp"
android:ems="10"
android:hint="Password"
android:inputType="textPassword"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF" />
<Button
android:id="#+id/buttonLogin"
style="#style/DefaultButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center"
android:layout_marginTop="16dp"
android:layout_marginEnd="0dp"
android:layout_marginRight="0dp"
android:background="#drawable/gradiant"
android:onClick="onLogin"
android:text="#string/login"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</LinearLayout>
</ScrollView>
if(username.equals("123456") && password.equals("123456789"){
// login true
}
try this
username.getText().toString().contentEquals("123456") && password.getText().toString().contentEquals("123456789")
Related
Trying to make two login, one for admin, one for user. They share the same layout, but admin has additional TextFields and Buttons to add data to the menu. So when logging in with user credentials, the TextFields and Buttons will be setVisibility(View.GONE), but it's not working at all, in fact it's showing up like setVisibility(View.GONE) was added at all. Any advice would be appreciated.
loginpage.java
DatabaseHelper myDB;
EditText LoginEMail;
EditText LoginPassword;
Button LoginBtn;
LinearLayout linearLayout;
View add_image;
View add_name;
View add_desc;
View add_data;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.loginpage);
LoginEMail = findViewById(R.id.LoginEMail);
LoginPassword = findViewById(R.id.LoginPassword);
LoginBtn = findViewById(R.id.LoginBtn);
myDB = new DatabaseHelper(this);
linearLayout = findViewById(R.id.linearLayout);
linearLayout = new LinearLayout(this);
add_image = new View(this);
add_name = new View(this);
add_desc = new View(this);
add_data = new View(this);
}
public void Login(View view) {
Intent intent = new Intent(loginpage.this, MenuSelection.class);
if (LoginEMail.getText().toString().equals("admin") && (LoginPassword.getText().toString().equals("admin"))) {
startActivity(intent);
linearLayout.setVisibility(View.VISIBLE);
}
else if(LoginEMail.getText().toString().equals("user") && (LoginPassword.getText().toString().equals("user"))) {
startActivity(intent);
linearLayout.setVisibility(View.GONE);
add_image.setVisibility(View.GONE);
add_name.setVisibility(View.GONE);
add_desc.setVisibility(View.GONE);
add_data.setVisibility(View.GONE);
}
else
Toast.makeText(loginpage.this, "Incorrect E-mail or Password.", Toast.LENGTH_SHORT).show();
}
loginpage.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">
<EditText
android:id="#+id/LoginEMail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:hint="E-Mail"
android:inputType="textEmailAddress"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.504"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.204" />
<EditText
android:id="#+id/LoginPassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Password"
android:inputType="textPassword"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.495"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.338" />
<Button
android:id="#+id/LoginBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Log In"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.502"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.602"
android:onClick="Login"/>
</androidx.constraintlayout.widget.ConstraintLayout>
menu_selection.xml
<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:gravity="center_horizontal"
android:orientation="vertical">
<ListView
android:id="#+id/menu_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0">
<ImageButton
android:id="#+id/add_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:src="#color/black" />
<EditText
android:id="#+id/add_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Name" />
<EditText
android:id="#+id/add_desc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Description" />
<Button
android:id="#+id/add_data"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
Instead of add_image = new View(this); you need to associate the variable add_image to the view in your XML layout using the findViewById(R.id.add_image) method. Similarly for the other 3 views that you have initialized this way.
You also need to delete the line linearLayout = new LinearLayout(this);. The previous line setting this variable is correct.
I'm new to the committee and I have problems with my code because I'm using TextInputLayout and I want my Password and Confirm Password must validate but whatever I do it still giving me problems to fix it.
Here is my activity_register.xml
<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="16dp"
tools:context=".Register">
<android.support.design.widget.TextInputLayout
android:id="#+id/text_input_RegPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
app:errorEnabled="true"
app:passwordToggleEnabled="true">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Password"
android:inputType="textPassword" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="#+id/text_input_RegCfmPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_below="#+id/text_input_RegPassword"
app:errorEnabled="true"
app:passwordToggleEnabled="true">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Confirm Password"
android:inputType="textPassword" />
</android.support.design.widget.TextInputLayout>
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="101dp"
android:text="Register"
android:onClick="Reg"/>
</LinearLayout>
and this is my Register.java because I have tried to use equals but it won't work because when I want to type .getText is just invalid
public class Register extends AppCompatActivity {
private TextInputLayout textInputRegPassword;
private TextInputLayout textInputRegCfmPassword;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
getSupportActionBar().hide();
setContentView(R.layout.activity_register);
textInputRegPassword = findViewById(R.id.text_input_RegPassword);
textInputRegCfmPassword = findViewById(R.id.text_input_RegCfmPassword);
}
private boolean RegisterPassword(){
String userReg = textInputRegPassword.getEditText().getText().toString().trim();
if(userReg.isEmpty()){
textInputRegPassword.setError("Enter Password");
return false;
} else {
textInputRegPassword.setError(null);
return true;
}
}
private boolean RegisterCfmPassword(){
String userReg = textInputRegCfmPassword.getEditText().getText().toString().trim();
if(userReg.isEmpty()){
textInputRegCfmPassword.setError("Enter Password");
return false;
} else {
textInputRegCfmPassword.setError(null);
return true;
}
}
public void Reg(View v){
if(!RegisterPassword() | !RegisterCfmPassword() ){
return;
}
}
}
Edited: I want my Password and Confirm Password Validate that both of them are the same and when I press the button, it just crash
private boolean Verify(){
if(CfmPassword.getText().toString().equals(Password.getText().toString())){
return true;
} else{
textInputRegCfmPassword.setError("Password Do Not Match");
return false;
}
}
public void Reg(View v){
if(!RegisterPassword() | !RegisterCfmPassword() | !Verify() ){
return;
}
}
Try this code
Register Class code
public class Register extends AppCompatActivity {
private TextInputLayout textInputRegPassword;
private TextInputLayout textInputRegCfmPassword;
private TextInputEditText inputRegCfmPassword;
private TextInputEditText inputRegPassword;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
getSupportActionBar().hide();
setContentView(R.layout.activity_register);
textInputRegPassword = (TextInputLayout)findViewById(R.id.text_input_RegPassword);
textInputRegCfmPassword =(TextInputLayout) findViewById(R.id.text_input_RegCfmPassword);
inputRegCfmPassword =(TextInputEditText) findViewById(R.id.input_RegCfmPassword);
inputRegPassword =(TextInputEditText) findViewById(R.id.input_RegPassword);
}
private boolean RegisterPassword(){
String userReg = inputRegPassword.getText().toString().trim();
if(userReg.isEmpty()){
textInputRegPassword.setError("Enter Password");
return false;
} else {
textInputRegPassword.setError(null);
return true;
}
}
private boolean RegisterCfmPassword(){
String userReg = inputRegCfmPassword.getText().toString().trim();
if(userReg.isEmpty()){
textInputRegCfmPassword.setError("Enter Password");
return false;
} else {
textInputRegCfmPassword.setError(null);
return true;
}
}
private boolean Verify(){
if(inputRegPassword.getText().toString().equals(inputRegCfmPassword.getText().toString())){
return true;
} else{
textInputRegCfmPassword.setError("Password Do Not Match");
return false;
}
}
public void Reg(View v){
if(!RegisterPassword() || !RegisterCfmPassword() || !Verify() ){
return;
}
}
}
And xml code is
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="16dp"
tools:context=".Register">
<android.support.design.widget.TextInputLayout
android:id="#+id/text_input_RegPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
app:errorEnabled="true"
app:passwordToggleEnabled="true">
<android.support.design.widget.TextInputEditText
android:id="#+id/input_RegPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Password"
android:inputType="textPassword" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="#+id/text_input_RegCfmPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/text_input_RegPassword"
app:errorEnabled="true"
app:passwordToggleEnabled="true">
<android.support.design.widget.TextInputEditText
android:id="#+id/input_RegCfmPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Confirm Password"
android:inputType="textPassword" />
</android.support.design.widget.TextInputLayout>
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="101dp"
android:onClick="Reg"
android:text="Register" />
</LinearLayout>
Hope this will be help you!
TextInputLayout is just a design layout. You should get user input from its child TextInputEditText.
<android.support.design.widget.TextInputLayout
android:id="#+id/text_input_RegPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
app:errorEnabled="true"
app:passwordToggleEnabled="true">
<android.support.design.widget.TextInputEditText
android:id="#+id/text_input_edit_password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Password"
android:inputType="textPassword" />
then in your activity define TextInputEditText:
TextInputEditText password = findViewById(R.id.text_input_edit_password);
and finally get user input:
password.getText().toString()
I would like to ask on how to achieve to wrap a content in alertdialog?
Because the current output of my dialog has an excess white field.
Hope someone can help me to understand this problem thanks.
Here is my activity_dialog.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:minWidth="10dp"
android:minHeight="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:context="com.bloxofcode.toggle.MainActivity">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="50sp"
android:background="#color/colorHeaderDialog"
android:textColor="#android:color/white"
android:text="#string/select_gender"
android:padding="15dp"
android:gravity="center_horizontal|left"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="30sp"
android:padding="15dp"
android:text="Sample"
android:id="#+id/editText" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ToggleButton
android:text="ToggleButton"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/toggleButtonMale"
android:textOn=""
android:textOff=""
android:focusable="false"
android:background="#drawable/check_male"
android:layout_weight="1" />
<ToggleButton
android:text="ToggleButton"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/toggleButtonFemale"
android:textOn=""
android:textOff=""
android:focusable="false"
android:background="#drawable/check_male"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<Button
android:id="#+id/btnCancel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Cancel"
android:textSize="20dp"
android:padding="30dp"
android:textColor="#android:color/white"
android:layout_weight="1"/>
<Button
android:id="#+id/btnAccept"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Accept"
android:textSize="20dp"
android:padding="30dp"
android:background="#color/colorDialogOK"
android:textColor="#android:color/white"
android:layout_weight="1"/>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
Here is some of my implementation in the MainActivity.java:
AlertDialog.Builder mBuilder = new AlertDialog.Builder(MainActivity.this);
View mView = getLayoutInflater().inflate(R.layout.activity_dialog, null);
.....
mBuilder.setView(mView);
final AlertDialog dialog = mBuilder.create();
dialog.show();
Try Creating a dialog like this. this works perfect and then right away your dialog logic is seperated from you activity logic
public class CustomDialog extends Dialog implements
android.view.View.OnClickListener {
public Activity c;
public CustomDialog d;
public Button yes, no;
public CustomDialog(Activity a) {
super(a);
// TODO Auto-generated constructor stub
this.c = a;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.dialog_layout);
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//dosomething
}
});
}
}
Hope it is not correct to wrap the content of dialog as it might disrupt the view in tablets and larger devices.
Anyhow, basing upon your requirement.. hope this link works
AlertDialog with custom view: Resize to wrap the view's content
This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 6 years ago.
I may have some troubles finding where the problem is ... Here is my activity_main.xml :
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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: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"
tools:context="com.grasland.test.MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/poids"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:text="#string/poids"
android:textColor="#FF0000"
android:textStyle="bold"
android:textSize="20sp" />
<EditText
android:id="#+id/editPoids"
android:layout_width="match_parent"
android:layout_height="50sp"
android:layout_below="#id/poids"
android:hint="#string/editPoids"
android:inputType="number"/>
<TextView
android:id="#+id/taille"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/editPoids"
android:layout_centerHorizontal="true"
android:text="#string/taille"
android:textColor="#FF0000"
android:textStyle="bold"
android:textSize="20sp" />
<EditText
android:id="#+id/editTaille"
android:layout_width="match_parent"
android:layout_height="50sp"
android:layout_below="#id/taille"
android:hint="#string/editTaille"
android:inputType="number"/>
<RadioGroup
android:id="#+id/radioGroup1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:orientation="horizontal"
android:layout_below="#id/editTaille">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/radioButtonCm"
android:checked="true" />
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/radioButtonM"/>
</RadioGroup>
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_below="#id/radioGroup1"
android:text="#string/button"/>
<TextView
android:id="#+id/resultTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/button"
android:paddingTop="40dp"
android:layout_centerHorizontal="true"
android:text="#string/resultTitle"
android:textSize="20sp" />
<TextView
android:id="#+id/result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/resultTitle"
android:paddingTop="20dp"
android:layout_centerHorizontal="true"
android:textSize="80sp" />
</RelativeLayout>
</FrameLayout>
and there is my java file :
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Button calculImc = (Button) findViewById(R.id.button);
final EditText poidsView = (EditText) findViewById(R.id.editPoids);
final EditText tailleView = (EditText) findViewById(R.id.editTaille);
final TextView resultat = (TextView) findViewById(R.id.result);
calculImc.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int iPoids = Integer.parseInt(poidsView.getText().toString());
int iTaille = Integer.parseInt(tailleView.getText().toString());
double dResult = iPoids / ( ( iTaille * iTaille ) / 1000 );
resultat.setText(Double.toString(dResult));
}
});
}
}
I can't see the reason for this NullPointerException I'm getting (I may be a bit tired ...).
Thanks in advance !
Sylvain.
I don't see you placing the setContentView function below onCreate
You should consider doing:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
}
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.