i'm struggling with this problem: I want to create a "whatsapp like" list of conversations and i'd like to bundle image, username and last message in a single external layout that I can call programmatically to then add a new one, but for some reason this doesn't work.
chat_link_layout.xml
<TextView
android:text="Username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/username"
android:layout_toRightOf="#+id/profileimage"
android:layout_toEndOf="#+id/profileimage"
android:textAppearance="#android:style/TextAppearance.Material.Medium"
android:textColor="#android:color/black"
android:textStyle="normal|bold"
android:layout_marginTop="5px"/>
<TextView
android:text="Last Message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/lastmessage"
android:layout_below="#+id/username"
android:layout_toRightOf="#+id/profileimage"
android:layout_toEndOf="#+id/profileimage"
android:textAppearance="#android:style/TextAppearance.Material.Medium"
android:textColor="#android:color/black" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#mipmap/ic_launcher"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:id="#+id/profileimage"
android:layout_marginRight="10px" />
part of the MainActivity.java's onCreate function where i try to call the XML layout
View chatLinkLayout = LayoutInflater.from(getApplication()).inflate(R.layout.chat_link_layout, null);
ConstraintLayout constraintLayout = (ConstraintLayout) findViewById(R.id.content_main);
constraintLayout.setBackgroundColor(Color.BLACK);
constraintLayout.addView(chatLinkLayout);
constraintLayout.addView(new CalendarView(getApplicationContext()));
the calendar is shown with no problem.
ChatLinkLayout.java
import android.content.Context;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.TextView;
public class ChatLinkLayout extends FrameLayout {
private TextView username;
private TextView lastmessage;
private ImageView profileimage;
public ChatLinkLayout(Context context) {
super(context);
username = (TextView) findViewById(R.id.username);
lastmessage = (TextView) findViewById(R.id.lastmessage);
profileimage = (ImageView) findViewById(R.id.profileimage);
}
}
Does any of you have any suggestion?
Thank you.
Related
I'm trying to play around with two activities. Edit and View activity. I would like to get the inputs from the edit activity and show in the view activity. In the edit activity I have the ok/submit button, which approves the changes and take back to the view activity, in this case the input text fields should be updated with the entered data. If the cancel button is pressed, then obviously no changes being done and the user is being taken back to the view activity.
I've most of the implementations done right, but I can't get the entered data to be shown on the view activity. What am I missing?
This is my codes for edit and view activities.
ViewActivity.java
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class ViewActivity extends AppCompatActivity {
public static final String EXTRA_FNAME = "EXTRA_TEXT";
public static final String EXTRA_LNAME = "EXTRA_TEXT";
public static final String EXTRA_EMAIL = "EXTRA_TEXT";
String Fname, Lname, email;
EditText FNInput, LNInput, emailInput;
Button editButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view);
FNInput = (EditText) findViewById(R.id.FNInput);
LNInput = (EditText) findViewById(R.id.LNInput);
emailInput = (EditText) findViewById(R.id.emailInput);
editButton = (Button) findViewById(R.id.okButton);
editButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
openEditActivity();
}
});
Fname = FNInput.getText().toString();
Lname = LNInput.getText().toString();
email = emailInput.getText().toString();
}
public void openEditActivity(){
Intent intent = new Intent(this, EditActivity.class);
intent.putExtra(EXTRA_FNAME, Fname);
intent.putExtra(EXTRA_LNAME, Lname);
intent.putExtra(EXTRA_EMAIL, email);
startActivity(intent);
}
}
EditActivity.java
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class EditActivity extends AppCompatActivity {
public static final String EXTRA_FNAME = "EXTRA_TEXT";
public static final String EXTRA_LNAME = "EXTRA_TEXT";
public static final String EXTRA_EMAIL = "EXTRA_TEXT";
String Fname, Lname, email;
EditText FNInput, LNInput, emailInput;
Button okButton, cancelButton;
private static final String TAG = "EditActivity";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_edit);
FNInput = (EditText) findViewById(R.id.FNInput);
LNInput = (EditText) findViewById(R.id.LNInput);
emailInput = (EditText) findViewById(R.id.emailInput);
okButton = (Button) findViewById(R.id.okButton);
cancelButton = (Button) findViewById(R.id.cancelButton);
okButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
updateViewActivity();
}
});
cancelButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
FNInput.setText("");
LNInput.setText("");
emailInput.setText("");
finish();
}
});
}
public void updateViewActivity(){
Fname = FNInput.getText().toString();
Lname = LNInput.getText().toString();
email = emailInput.getText().toString();
FNInput.setText(Fname);
LNInput.setText(Lname);
emailInput.setText(email);
Intent intent = new Intent(this, ViewActivity.class);
intent.putExtra(EXTRA_FNAME, Fname);
intent.putExtra(EXTRA_LNAME, Lname);
intent.putExtra(EXTRA_EMAIL, email);
startActivity(intent);
}
}
activity_view.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=".ViewActivity">
<LinearLayout
android:layout_width="270dp"
android:layout_height="374dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="57dp"
android:layout_marginTop="75dp"
android:orientation="vertical">
<EditText
android:id="#+id/FNInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="First Name"
android:inputType="textPersonName" />
<EditText
android:id="#+id/LNInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Last Name"
android:inputType="textPersonName" />
<EditText
android:id="#+id/emailInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="info#mail.com"
android:inputType="textEmailAddress" />
<Button
android:id="#+id/okButton"
android:layout_width="153dp"
android:layout_height="wrap_content"
android:text="Edit" />
</LinearLayout>
<TextView
android:id="#+id/viewTV"
android:layout_width="134dp"
android:layout_height="33dp"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginEnd="135dp"
android:layout_marginBottom="18dp"
android:text="View Activity"
tools:layout_editor_absoluteX="15dp"
tools:layout_editor_absoluteY="687dp" />
</RelativeLayout>
activity_edit.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=".EditActivity">
<LinearLayout
android:layout_width="270dp"
android:layout_height="374dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="57dp"
android:layout_marginTop="75dp"
android:orientation="vertical">
<EditText
android:id="#+id/FNInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="First Name"
android:inputType="textPersonName" />
<EditText
android:id="#+id/LNInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Last Name"
android:inputType="textPersonName" />
<EditText
android:id="#+id/emailInput"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="info#mail.com"
android:inputType="textEmailAddress" />
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent" >
<Button
android:id="#+id/okButton"
style="#style/Widget.AppCompat.Button.Borderless.Colored"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="OK"
android:textColor="#03A9F4" />
<Button
android:id="#+id/cancelButton"
style="#style/Widget.AppCompat.Button.ButtonBar.AlertDialog"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cancel"
android:textAlignment="center" />
</TableRow>
</LinearLayout>
<TextView
android:id="#+id/viewTV"
android:layout_width="108dp"
android:layout_height="38dp"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true"
android:layout_marginStart="169dp"
android:layout_marginBottom="18dp"
android:text="Edit Activity" />
</RelativeLayout>
I'm sorry this post is going to be lengthy.
When you want to do something like this, you have to follow some steps and follow them properly. which are:-
First, making yourself clear what you want to do exactly, that mean your goal.
Secondly, try to understand what you should do to achieve that goal, like - what thing might have need to do that, resources, tutorial (for this scenario) etc.
Finally let's start searching and learn how to do that.
Here, I can tell you where the problem is, you started learning but didn't completed the learning. I can see you just copied and pasted into two different activities without a reason.
Well, I am sharing what problems I found out from the above code of yours :-
Your ViewActivity.java should be consist of some TextView where you're intended to show your data from your EditActivity.java, which is not there.
You're sending Data with same key every time (another proof of copy pasting, not knowing what is happening) which is -
public static final String EXTRA_FNAME = "EXTRA_TEXT"; // use it as EXTRA_FNAME public static final String EXTRA_LNAME = "EXTRA_TEXT"; // use it as EXTRA_LNAME public static final String EXTRA_EMAIL = "EXTRA_TEXT"; // use it as EXTRA_EMAIL
When you are sending data to your view activity, you need to receive what you were sending by using getIntent() something like :- String s = getIntent().getStringExtra("EXTRA_FNAME"); which will return the value assigned to this key from your previous activity while sending to the present activity.
After receiving the desired value populate your TextView in the next line like this :- textView.setText(s); // fetched from getIntent() previously
For more information you can check this tutorial, which has showed how to pass and view data from one activity to another. Hope you understand.
I'm currently making a very simple math game. In this math game I want the player to solve easy equations. It looks like this: 9 * __ = 45, the player then fill in the correct number to solve the equation and then presses a Correct-button. If correct scores are added to the player.
The empty space is an EditText and the others are TextViews. Because I use a mix of TextView & EditText I need somehow to make a convertion for the program to be able to read and calculate. I've been reading like crazy and tried all kinds of different methods without success. How should I do to get around this?
This is how my data looks like:
activity_play.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:id="#+id/activity_play"
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.android.laboration2.PlayActivity">
<TextView
android:id="#+id/textPlayMultiply"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/textPlayNumber1"
android:layout_centerHorizontal="true"
android:text="#string/multiply"
android:textAlignment="textStart"
android:layout_gravity = "start"
android:textColor="#android:color/black"
android:textSize="40sp" />
<TextView
android:id="#+id/textPlayNumber1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="#+id/textPlayScore"
android:layout_alignParentTop="true"
android:layout_alignRight="#+id/textPlayScore"
android:layout_marginTop="48dp"
android:text="#string/number_1"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="50sp" />
<TextView
android:id="#+id/textPlayEqual"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="#string/equal"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="50sp"
android:layout_below="#+id/editTextPlayNumber2"
android:layout_alignLeft="#+id/textPlayMultiply"
android:layout_alignStart="#+id/textPlayMultiply" />
<TextView
android:id="#+id/textPlayResult"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="29dp"
android:text="#string/result_number3"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="50sp"
android:layout_below="#+id/textPlayEqual"
android:layout_alignLeft="#+id/textPlayEqual"
android:layout_alignStart="#+id/textPlayEqual" />
<TextView
android:id="#+id/textPlayScore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="31dp"
android:layout_toStartOf="#+id/answerButton"
android:text="#string/score_0"
android:textAlignment="textStart"
android:layout_gravity="start"
android:textColor="#android:color/black"
android:textSize="24sp"
android:layout_toLeftOf="#+id/answerButton" />
<Button
android:id="#+id/answerButton"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_marginTop="36dp"
android:background="#android:color/holo_orange_dark"
android:text="#string/button_result"
android:textAllCaps="false"
android:textColor="#android:color/white"
android:textSize="18sp"
android:textStyle="bold"
android:layout_below="#+id/textPlayResult"
android:layout_centerHorizontal="true" />
<EditText
android:id="#+id/editTextPlayNumber2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/textPlayMultiply"
android:layout_alignBottom="#+id/textPlayMultiply"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_toEndOf="#+id/answerButton"
android:layout_toRightOf="#+id/answerButton"
android:hint=" "
android:inputType="number"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="50sp" />
<TextView
android:id="#+id/textPlayLevel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/textPlayScore"
android:layout_alignBottom="#+id/textPlayScore"
android:layout_toEndOf="#+id/answerButton"
android:layout_toRightOf="#+id/answerButton"
android:text="#string/level_0"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="24sp" />
</RelativeLayout>
.
PlayActivity.java
package com.example.android.laboration2;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class PlayActivity extends AppCompatActivity implements View.OnClickListener {
TextView textPlayNumber1;
EditText editTextPlayNumber2;
TextView textPlayResult;
TextView textPlayScore;
TextView textPlayLevel;
Button answerButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_play);
textPlayNumber1 = (TextView) findViewById(R.id.textPlayNumber1);
editTextPlayNumber2 = (EditText) findViewById(R.id.editTextPlayNumber2);
textPlayResult = (TextView) findViewById(R.id.textPlayResult);
textPlayScore = (TextView) findViewById(R.id.textPlayScore);
textPlayLevel = (TextView) findViewById(R.id.textPlayLevel);
answerButton = (Button) findViewById(R.id.answerButton);
answerButton.setOnClickListener(this);
}//onCreate ends here
#Override
public void onClick(View v) {
}//onClick ends here
}//PlayActivity ends here
You can do
int playNumberValue = Integer.getInteger(textPlayNumber1.getText().toString());
int userInputValue = Integer.getInteger(editTextPlayNumber2.getText().toString());
int result = Integer.getInteger(textPlayResult.getText().toString());
if(result == userInputValue+playNumberValue)
//win game
Your TextView and EditText all have String type values. You have to parse those value to Integer then calculate and show the result.
Here is the action onClick answer button-
int score = 0;
#Override
public void onClick(View v) {
switch(v.getId()){
case R.id.answerButton:
int playNum1 = Integer.parseInt(textPlayNumber1.getText().toString());
int playNum2 = Integer.parseInt(editTextPlayNumber2.getText().toString());
int playResult = Integer.parseInt(textPlayResult.getText().toString());
if(playNum1*playNum2 == playResult){
score++;
textPlayScore.setText(""+score);
}
break;
}
}
Hope this helps.
I am implementing a program that uses database and interacts with different layouts of entries and editing users.
I'm working with RelativeLayout on all screens. In one of thelayouts, I insert a perfectly aligned button and give the command android:visibility="gone" for him to show upon request.
The problem is that when I need to use it at command editarBt.setVisibility(View.VISIBLE), the button appears out of alignment and overlaps the fields for entering information.
Is there any way to keep the position of command by button?
I will not put the entire code because it has 7 classes, so I'll just put the classes that interest.
EnterPatientActivity Class
package br.luizhmu.aulas_android_sqlite;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
/**
* Created by LuizHMU on 2/17/15.
*/
public class EnterPatientActivity extends Activity {
private Paciente paciente = new Paciente();
private EditText nomeEt;
private EditText emailEt;
private EditText senhaEt;
private Button salvarBt;
private Button editarBt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_inserir_paciente);
nomeEt = (EditText) findViewById(R.id.editTextNome);
emailEt = (EditText) findViewById(R.id.editTextEmail);
senhaEt = (EditText) findViewById(R.id.editTextSenha);
salvarBt = (Button) findViewById(R.id.buttonSalvar);
editarBt = (Button) findViewById(R.id.buttonEditar);
Intent intent = getIntent();
if(intent != null){
Bundle bundle = intent.getExtras();
if(bundle != null){
paciente.setId(bundle.getLong("id"));
paciente.setNome(bundle.getString("nome"));
paciente.setEmail(bundle.getString("email"));
nomeEt.setText(paciente.getNome());
emailEt.setText(paciente.getEmail());
senhaEt.setVisibility(View.GONE);
salvarBt.setVisibility(View.GONE);
editarBt.setVisibility(View.VISIBLE);
}
}
}
public void salvar(View view){
paciente.setNome(nomeEt.getText().toString());
paciente.setEmail(emailEt.getText().toString());
paciente.setSenha(senhaEt.getText().toString());
DataBase bd = new DataBase(this);
bd.inserir(paciente);
Toast.makeText(this, "Paciente inserido com sucesso!", Toast.LENGTH_SHORT).show();
}
public void editar(View view){
paciente.setNome(nomeEt.getText().toString());
paciente.setEmail(emailEt.getText().toString());
DataBase bd = new DataBase(this);
bd.atualizar(paciente);
Toast.makeText(this, "Paciente \""+paciente.getNome()+"\" atualizado com sucesso.", Toast.LENGTH_SHORT).show();
}
}
activity_inserir_paciente.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:paddingLeft="15dp"
android:paddingRight="15dp"
android:background="#ffffea0a"
tools:context=".EnterPatientActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Novo paciente"
android:id="#+id/textView3"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:textColor="#ff1727ff"
android:textSize="20dp"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:hint="*Nome"
android:ems="10"
android:id="#+id/editTextNome"
android:layout_below="#+id/textView3"
android:layout_alignRight="#+id/buttonSalvar"
android:layout_alignEnd="#+id/buttonSalvar" />
<EditText
android:hint="Telefone"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="phone"
android:ems="10"
android:id="#+id/editTextTelefone"
android:layout_below="#+id/editTextNome"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<EditText
android:hint="*E-mail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textEmailAddress"
android:ems="10"
android:id="#+id/editTextEmail"
android:layout_below="#+id/editTextTelefone"
android:layout_alignLeft="#+id/editTextTelefone"
android:layout_alignStart="#+id/editTextTelefone" />
<EditText
android:hint="*Senha"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:ems="10"
android:id="#+id/editTextSenha"
android:layout_below="#+id/editTextEmail"
android:layout_alignLeft="#+id/editTextEmail"
android:layout_alignStart="#+id/editTextEmail" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Salvar"
android:id="#+id/buttonSalvar"
android:onClick="salvar"
android:layout_below="#+id/textView4"
android:layout_alignRight="#+id/editTextSenha"
android:layout_alignEnd="#+id/editTextSenha" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Editar"
android:id="#+id/buttonEditar"
android:layout_alignTop="#+id/buttonSalvar"
android:layout_toLeftOf="#+id/buttonSalvar"
android:layout_toStartOf="#+id/buttonSalvar"
android:visibility="gone"
android:onClick="editar"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="* Campos de preenchimento obrigatório"
android:textColor="#000000"
android:id="#+id/textView4"
android:layout_below="#+id/editTextSenha"
android:layout_alignLeft="#+id/editTextSenha"
android:layout_alignStart="#+id/editTextSenha" />
</RelativeLayout>
In a RelativeLayout, you can prevent views from overlapping by using the layout_toLeftOf, layout_toRightOf, layout_above and layout_below attributes, which expect a view id as value.
Also, you might want to use View.INVISIBLE instead of View.GONE: The former will consider the view during layouting, but hide it. The latter will pretend the view does not exist, therefore altering your layout result.
MainActivity's code
How can I get values from the text boxes and the qty box in that user will input the value. price will come from server and than i want to calculate the bill and show it in next layout. plz give me some easy explanation as i am not expert in it. thanks in advance.
MainActivity .java
package com.example.myone;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
EditText textIn;
Button buttonAdd;
LinearLayout container;
private Button done;
private TextView tv;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textIn = (EditText)findViewById(R.id.textin);
buttonAdd = (Button)findViewById(R.id.add);
container = (LinearLayout)findViewById(R.id.container);
done = (Button) findViewById(R.id.cal);
tv= (TextView) findViewById(R.id.tv);
buttonAdd.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View arg0) {
LayoutInflater layoutInflater =
(LayoutInflater) getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View addView = layoutInflater.inflate(R.layout.row, null);
TextView textOut = (TextView)addView.findViewById(R.id.textout);
textOut.setText(textIn.getText().toString());
//(int1);
Button buttonRemove = (Button)addView.findViewById(R.id.remove);
buttonRemove.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
((LinearLayout)addView.getParent()).removeView(addView);
}});
container.addView(addView);
}});
}
}
MainActivity.xml
<LinearLayout
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:orientation="vertical"
android:background="#drawable/mainbg"
tools:context=".MainActivity" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="#+id/textin"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="Enter your item here"
/>
<Button
android:id="#+id/cal"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_below="#+id/textin"
android:text="Done!"
android:layout_alignParentLeft="true"
/>
<Button
android:id="#+id/add"
android:text="Add"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignBaseline="#+id/cal"
/>
</RelativeLayout>
<LinearLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
Row.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:background="#drawable/borderbg"
android:orientation="horizontal"
android:id="#+id/rel"
android:layout_height="wrap_content">
<TextView
android:id="#+id/textout"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:hint="Item"
android:layout_marginTop="10dp"
android:layout_marginLeft="5dp"
/>
<EditText
android:id="#+id/qty"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_alignTop="#+id/price"
android:layout_toRightOf="#+id/price"
android:layout_marginLeft="50dp"
android:textSize="12sp"
android:hint="Qty" />
<TextView
android:id="#+id/price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/textout"
android:layout_alignBottom="#+id/textout"
android:layout_marginLeft="42dp"
android:layout_toRightOf="#+id/textout"
android:hint="Price" />
<Button
android:id="#+id/remove"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:gravity="left"
android:text="remove" />
</RelativeLayout>
Simply I want to create a basic shopping app that have 20 products. the price and product name will come from server and quantity will input by user so how do I that?
You are looking for something like this
int count = container.getChildCount();
for (int i = 0; i < count; i++) {
final View row = container.getChildAt(i);
TextView textOut = (TextView)row.findViewById(R.id.textout);
String data = textOut.getText().toString();
}
Where container is your LinearLayout in which you have added your inflated rows.
Try this:-
To take user input from text box:-
int qty = Integer.parseInt(qtyTextBox.getText().toString());
Caluculate bill:-
double bill = price*qty;
Send bill value to next activity:-
Intent in = new Intent();
in.putExtra("Bill", bill);
startActivity(in);
Get bill value in next activity:-
Intent in = getIntent();
int mBill = in.getExtra("Bill");
string bill = String.valueOf(mBill);
Now you can set the value of 'bill' to the TextView where you want to display it.
I'm trying to get an ImageButton to create another ImageButton in a different layout from an OnClick. My logcat takes me to an error on this line, but provides no further feedback:
ImageButton adab = (ImageButton)findViewById(R.id.abbutton);
My code:
package org.iimed.www;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
public class Penicillins extends Activity implements OnClickListener{
ImageButton back,addmed;
Context abbuttonplain;
public void onCreate(Bundle SavedInstanceState){
super.onCreate(SavedInstanceState);
setContentView(R.layout.penicillin);
back = (ImageButton) findViewById(R.id.back);
addmed = (ImageButton) findViewById(R.id.addmed);
back.setOnClickListener(this);
addmed.setOnClickListener(this);
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.back:
startActivity(new Intent(
Penicillins.this, ImageTextListViewActivity.class));
break;
case R.id.addmed:
RelativeLayout ll=(RelativeLayout)findViewById(R.layout.sundayopen);
LayoutParams param = new
RelativeLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
ImageButton adab = (ImageButton)findViewById(R.id.abbutton);
ll.addView(adab,param);
}
}
}
Thanks for you patience.
Edit: the .xml the button is to create on
<?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:background="#drawable/miimedback" >
<ImageView
android:id="#+id/pillboxm"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="63dp"
android:contentDescription="#string/pillbox"
android:src="#drawable/pillbox" />
<ImageButton
android:id="#+id/satlid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/pillboxm"
android:layout_alignRight="#+id/pillboxm"
android:background="#android:color/transparent"
android:contentDescription="#string/satlid"
android:src="#drawable/slid" />
<ImageButton
android:id="#+id/frilid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/thulid"
android:layout_toLeftOf="#+id/satlid"
android:background="#android:color/transparent"
android:contentDescription="#string/frilid"
android:src="#drawable/flid" />
<ImageButton
android:id="#+id/thulid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/pillboxm"
android:layout_toLeftOf="#+id/frilid"
android:background="#android:color/transparent"
android:contentDescription="#string/thulid"
android:src="#drawable/tlid" />
<ImageButton
android:id="#+id/homebutton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginTop="11dp"
android:background="#android:color/transparent"
android:contentDescription="#string/homebutton"
android:src="#drawable/homebut1" />
<ImageButton
android:id="#+id/wedlid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/thulid"
android:layout_toLeftOf="#+id/thulid"
android:background="#android:color/transparent"
android:contentDescription="#string/wedlid"
android:src="#drawable/wlid" />
<ImageButton
android:id="#+id/tuelid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/pillboxm"
android:layout_toLeftOf="#+id/wedlid"
android:background="#android:color/transparent"
android:contentDescription="#string/tuelid"
android:src="#drawable/tlid" />
<ImageButton
android:id="#+id/monlid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/pillboxm"
android:layout_toLeftOf="#+id/tuelid"
android:background="#android:color/transparent"
android:contentDescription="#string/monlid"
android:src="#drawable/mlid" />
<ImageButton
android:id="#+id/adbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignTop="#+id/abbutton"
android:background="#android:color/transparent"
android:contentDescription="#string/adbutton"
android:src="#drawable/adbutton" />
<ImageButton
android:id="#+id/abbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/cobutton"
android:layout_alignParentRight="true"
android:background="#android:color/transparent"
android:contentDescription="#string/abbutton"
android:src="#drawable/antibiotic_buton" />
<ImageButton
android:id="#+id/bppressure"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/monlid"
android:layout_alignTop="#+id/adbutton"
android:background="#android:color/transparent"
android:contentDescription="#string/bpbutton"
android:src="#drawable/bpbutton" />
<ImageButton
android:id="#+id/satlidopen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/monlid"
android:layout_toLeftOf="#+id/monlid"
android:background="#android:color/transparent"
android:contentDescription="#string/satlidopen"
android:src="#drawable/satlidopen" />
<ImageButton
android:id="#+id/cobutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/satlidopen"
android:layout_marginBottom="133dp"
android:layout_toRightOf="#+id/wedlid"
android:background="#android:color/transparent"
android:contentDescription="#string/cobutton"
android:src="#drawable/cobutton" />
</RelativeLayout>
the logcat:
01-06 23:35:23.725: E/AndroidRuntime(29654): at `org.iimed.www.Penicillins.onClick(Penicillins.java:50)`
You should create a new ImageButton in code, and not try to add the same ImageButton reference (R.id.abbutton). You can't add the same View (you get a reference to same inflated object using findViewbyId). Try something like:
RelativeLayout ll=(RelativeLayout)findViewById(R.layout.sundayopen);
LayoutParams param = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
ImageButton adab = new ImageButton(getApplicationContext());
// Initialise ImageButton properties like the Image here...
ll.addView(adab,param);
Also, as a good practice you should keep the reference to your RelativeLayout ll in a member variable, assign in it once (look it up using findViewbyId) in your onCreate and just use it wherever you need it, that way you save the unnecessary lookups every time you click the R.id.addmed ImageButton.
back = (ImageButton) findViewById(R.id.back);
addmed = (ImageButton) findViewById(R.id.addmed);
you are using this id's to click and getting error for this is
adab = (ImageButton)findViewById(R.id.abbutton);
check id and layout proper as you have no id of abbuttonin your layout