I am new to android. In my app, having common header.
I have created common header.xml and include that header.xml in all the activites.
But the button clicks [listener] not working.
How to solve the issue. this is the code.
Header.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layoutHeader"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:text="Home" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:text="Accounts" />
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.3"
android:text="History" />
</LinearLayout>
Home.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<include
android:layout_width="fill_parent"
android:layout_height="wrap_content"
layout="#layout/header" />
<EditText
android:id="#+id/txtOTPCode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="textPersonName" />
<Button
android:id="#+id/btnVerify"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="verify" />
</LinearLayout>
BaseHeaderActivity.java
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public abstract class BaseHeaderActivity extends Activity
{
Button btn1, btn2, btn3;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.header);
btn1 = (Button)findViewById(R.id.button1);
btn1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
// Programming stuf
//show the another view
System.out.println("Home button Action");
}
});
}
}
Home Activity.java
import android.os.Bundle;
import android.widget.Button;
public class HomeActivity extends BaseHeaderActivity
{
Button btnVerify;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.home);
btnVerify = (Button)findViewById(R.id.btnVerify);
}
}
base activities button clicks not working..!
Kindly suggest the solution.
Thanks in advance,
Arun
You don't have to create two different activities for this. Create one activity and use all buttons (including button in header.xml) similarly
public class MainActivity extends Activity {
Button btn1,btnVerify;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1 = (Button)findViewById(R.id.button1);
btn1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
// Programming stuf
//show the another view
Toast.makeText(MainActivity.this, "Home button Action", Toast.LENGTH_SHORT).show();
}
});
btnVerify = (Button)findViewById(R.id.btnVerify);
btnVerify.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
// Programming stuf
//show the another view
Toast.makeText(MainActivity.this, "Button Verify Action", Toast.LENGTH_SHORT).show();
}
});
}
}
You can not use one layout xml file with single activity only.
Note - If you still want to create two different activities - one base and one child then you need to use setContentView() method in base activity with main layout file (Home.xml in your case) and extend it with child activity. Remember in this case dont use setContentView() method in Child Activity. This scenario is not preferred generally unless we want to create several child of same activity.
Related
hello friends today my question is about string_array.On my activity i created two buttons.Now on (strings.xml) i created string array name with two items and i have inserted some text as shown below.On each button click i would like to access each item individually.for example on button1 click show me first item and on button 2 click give me the 2nd item on.Can you please give me the code for button click as i have little idea on how to access item.I have created a textview activity to display my item with every click.my code is working fine till now but i need help with extra code that i have to add.Please help me .
// Button activity page
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</ScrollView>
<Button
android:layout_height="wrap_content"
android:layout_marginTop="90dp"
android:layout_marginEnd="60dp"
android:layout_marginRight="50dp"
android:id="#+id/btn1"
android:layout_width="wrap_content"
android:text="#string/OKILA"
android:textSize="18sp"
android:textStyle="bold" />
<Button
android:id="#+id/button1"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_marginTop="160dp"
android:layout_marginRight="50dp"
android:text="1"
android:textSize="18sp"
android:textStyle="bold" />
</RelativeLayout>
//strings.xml
<string-array name="chapters">
<item>this is tes1</item>
<item>this is test2</item>
</string-array>
//main
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import org.w3c.dom.Text;
public class Lipok extends AppCompatActivity implements View.OnClickListener {
Toolbar mActionBarToolbar;
Button btnOne;
Button btnTwo;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_lipok);
mActionBarToolbar=(Toolbar)findViewById(R.id.CHAPTERS);
setSupportActionBar(mActionBarToolbar);
getSupportActionBar().setTitle("CHAPTERS");
String[] chapters=getResources().getStringArray(R.array.chapters);
btnOne = findViewById(R.id.btn1);
btnTwo = findViewById(R.id.button1);
btnOne.setOnClickListener(this);
btnTwo.setOnClickListener(this);
}
#Override
public void onClick(View v) {
String text="";
switch(v.getId()){
case R.id.btn1 : {
text = getResources().getStringArray(R.array.chapters)[0];
break;
}
case R.id.button1 : {
text = getResources().getStringArray(R.array.chapters)[1];
break;
}
}
Intent intent = new Intent(Lipok.this,lipokchapters.class);
intent.putExtra("DATA", text);
startActivity(intent);
}
}
//textview activity page
package com.Aolai.temeshilai;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class lipokchapters extends AppCompatActivity {
TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_lipokchapters);
textView=findViewById(R.id.textv);
String text= getIntent().getStringExtra("Data");
textView.setText(text);
}
}
Try this :
xml file
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</ScrollView>
<Button
android:layout_height="wrap_content"
android:layout_marginTop="90dp"
android:layout_marginEnd="60dp"
android:layout_marginRight="50dp"
android:id="#+id/OKILA"
android:layout_width="wrap_content"
android:text="#string/OKILA"
android:textSize="18sp"
android:textStyle="bold" />
<Button
android:id="#+id/button1"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_marginTop="160dp"
android:layout_marginRight="50dp"
android:text="1"
android:textSize="18sp"
android:textStyle="bold" />
</RelativeLayout>
strings.xml
<string-array name="chapters">
<item>this is tes1</item>
<item>this is test2</item>
</string-array>
Main Class
public class Lipok extends AppCompatActivity implements View.OnClickListener {
Toolbar mActionBarToolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_lipok);
mActionBarToolbar=(Toolbar)findViewById(R.id.CHAPTERS);
setSupportActionBar(mActionBarToolbar);
getSupportActionBar().setTitle("CHAPTERS");
}
#Override
public void onClick(View v) {
String text="";
switch(v.getId()){
case R.id.OKILA : {
text = getResources().getStringArray(R.array.testArray)[0];
break;
}
case R.id.button1 : {
text = getResources().getStringArray(R.array.testArray)[1];
break;
}
}
Toast.makeText(this, text, Toast.LENGTH_LONG).show();
Intent intent = new Intent(this, YOUR_ACTIVITY_NAME.class);
intent.putExtra("DATA", text);
startActivity(intent);
// Or else you can do whatever you want to do here with that text
}
}
Then in your other activity
String data = getIntent().getStringExtra("DATA");
YOUR_TEXTVIEW_NAME.setText(data);
This is basics of Android so before answering I suggest you to go
through basic tutorials before posting on Stackoberflow.
Now,
Here is how you can access the items from your string_array.
String[] chapters= getResources().getStringArray(R.array.chapters);
Now,here is pseudo code that might help you.
btn1.setOnClickListener(
your_text_view.setText(chapters[0])
)
//Here 0 means your first item, likewise you can access items by their index in
array
I'm new to Android app.. I was trying to change the button color on first click and to change back to default on the next click and this will work no matter how many times user clicks...
Can anyone help me to understand this
Create global variable clickStatus
boolean clickStatus=true;
final Button running_app=(Button)findViewById(R.id.running_app);
running_app.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (clickStatus){
clickStatus=false;
running_app.setBackgroundColor(Color.parseColor("#3F51B5"));
}else {
clickStatus=true;
running_app.setBackgroundResource(android.R.drawable.btn_default);
}
}
});
Simple, Just give two different tags to button and keep toggling it on button click. That would help you to change background colour alternatively. Here is the complete code for it. Hope this helps.
Here is main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button
android:id="#+id/btnClick"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Click Me" />
</LinearLayout>
Here is MainActivity.java
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private Button btnClick;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btnClick = (Button) findViewById(R.id.btnClick);
btnClick.setOnClickListener(this);
btnClick.setTag("1");
btnClick.setBackgroundColor(Color.BLUE);
}
#Override
public void onClick(View view) {
if (view.getTag().equals("1")) {
view.setTag("0");
btnClick.setBackgroundColor(Color.RED);
} else {
view.setTag("1");
btnClick.setBackgroundColor(Color.BLUE);
}
}
}
I am new to android programming and there are a few things I don't quite know how to do yet. I am doing a course on udemy and was trying to put together everything I have learned up to a certain point.
What I am trying to do is have the user click on a button (i have 12) and have it bring up a textField where they can enter two numbers. I just want to be able to get the user's two numbers and i'm pretty sure I can figure out the rest ( I hope). I just don't understand how to go about doing this.
Any help would be much appreciated. Basically all I want to do is to be able to have the user click on one of the 12 buttons and be asked to enter two values, then take those values and perform a calculation on it.
Your xml could be like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/b_ok"
android:text="Click Me"/>
<EditText android:layout_width="fill_parent"
android:layout_height="match_parent"
android:visibility="invisible"
android:id="#+id/et_showme"/>
</LinearLayout>
and your activity could be like this:
package com.william.kinaan.welcomeback;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class Test1 extends Activity implements OnClickListener {
private Button b_ok;
private EditText et_showme;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test1);
initialize();
}
private void initialize() {
this.b_ok = (Button) findViewById(R.id.b_ok);
this.b_ok.setOnClickListener(this);
this.et_showme = (EditText) findViewById(R.id.et_showme);
}
#Override
public void onClick(View v) {
this.et_showme.setVisibility(View.VISIBLE);
}
}
Create an Activity that has 2 EditTexts
When user click a button the Activity is started and user can enter the Numbers
Try this.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingLeft="16dp"
android:paddingRight="16dp" >
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_id"
android:visibility="invisible"
android:text="sample text"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="click"
android:id="#+id/click"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
And in your activity, you can do like this.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
Button button = (Button) findViewById(R.id.click);
final EditText text = (EditText) findViewById(R.id.tv_id);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
text.setVisibility(View.VISIBLE);
}
});
}
I have two rather basic questions I believe which needs answering:
1) When I run my emulator on the home screen my SignIn button is unresponsive and I am unsure why as I have tried alternative methods but whenever I click nothing happens and no error is showing. Code is shown below:
package com.techblogon.loginexample;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class HomeActivity extends Activity
{
Button btnSignIn,btnSignUp;
LoginDataBaseAdapter loginDataBaseAdapter;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// create a instance of SQLite Database
loginDataBaseAdapter=new LoginDataBaseAdapter(this);
loginDataBaseAdapter=loginDataBaseAdapter.open();
// Get The Reference Of Buttons
btnSignIn=(Button)findViewById(R.id.buttonSignIN);
btnSignUp=(Button)findViewById(R.id.buttonSignUP);
// Set OnClick Listener on SignUp button
btnSignUp.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
/// Create Intent for SignUpActivity and Start The Activity
Intent intentSignUP=new Intent(getApplicationContext(),SignUPActivity.class);
startActivity(intentSignUP);
}
});
}
// Method to handleClick Event of Sign In Button
public void signIn(View V)
{
final Dialog dialog = new Dialog(HomeActivity.this);
dialog.setContentView(R.layout.login);
dialog.setTitle("Login");
final EditText editTextUserName=(EditText)dialog.findViewById(R.id.editTextUserNameToLogin);
final EditText editTextPassword=(EditText)dialog.findViewById(R.id.editTextPasswordToLogin);
Button btnSignIn=(Button)dialog.findViewById(R.id.buttonSignIN);
// Set On ClickListener
btnSignIn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// get The User name and Password
String userName=editTextUserName.getText().toString();
String password=editTextPassword.getText().toString();
// fetch the Password form database for respective user name
String storedPassword=loginDataBaseAdapter.getSinlgeEntry(userName);
// check if the Stored password matches with Password entered by user
if(password.equals(storedPassword))
{
Toast.makeText(HomeActivity.this, "Welcome", Toast.LENGTH_LONG).show();
dialog.dismiss();
Intent ii=new Intent(HomeActivity.this,MainMenu.class);
startActivity(ii);
}
else
{
Toast.makeText(HomeActivity.this, "User Name or Password does not match", Toast.LENGTH_LONG).show();
}
}
});
dialog.show();
}
#Override
protected void onDestroy() {
super.onDestroy();
// Close The Database
loginDataBaseAdapter.close();
}
}
Could somebody provide me with the best sqlite database viewer for eclipse, I am looking to view the records of the database I have created on my emulator
My XML is as follows
<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:gravity="center_vertical"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/picture" />
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Hello, Welcome"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="#+id/buttonSignIN"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:text="Sign In" />
<Button
android:id="#+id/buttonSignUP"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:text="Sign Up" />
</LinearLayout>
you are missing an attribute in xml for buttonSignIN button
android:onClick="signIn"
Try this,
<Button
android:id="#+id/buttonSignIN"
android:layout_width="fill_parent"
android:layout_height="70dp"
android:onClick="signIn"
android:text="Sign In" />
You need to understand the difference between setting clickListener in java code and setting a attribute from xml for the button click. These are two different ways in which you could achieve click events for any element.
trying to run a fragment with a button and getting error after the execution:
Following this S.O. answer How to handle button clicks using the XML onClick within Fragments , but not working with me.
DetalhesFragment.java
package com.example.waitersoriginal;
import android.app.Fragment;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsoluteLayout;
import android.widget.Button;
import android.widget.TextView;
public class DetalhesFragment extends Fragment implements OnClickListener{
TextView nomeEntrada,descrEntrada,valorEntrada,nmArm,dsArm,vlArm;
String txtNome, txtDescr;
View view,v;
#Override
public View onCreateView(LayoutInflater inflater,ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.detalhes_fragment, container, false);
Button mButton = (Button) view.findViewById(R.id.button1);
nomeEntrada= (TextView) view.findViewById(R.id.textView1);
descrEntrada= (TextView)view.findViewById(R.id.textView2);
valorEntrada= (TextView)view.findViewById(R.id.textView3);
mButton.setOnClickListener((android.view.View.OnClickListener) this);
return view;
}
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button1:
PedidosFragment array = (PedidosFragment)getFragmentManager().findFragmentById(R.id.fragment3);
array.criaArray(txtNome,txtDescr);
break;
}
}
public void change(String txt, String txt1){
//public void change(String txt, String txt1, String txt2){
//public void change(String txt){
nomeEntrada.setText(txt);
descrEntrada.setText(txt1);
txtNome = txt;
txtDescr = txt1;
//valorEntrada.setText(txt2);
}
}
But this row contains errors:
public class DetalhesFragment extends Fragment implements OnClickListener{
Error: The type DetalhesFragment must implement the inherited abstract method DialogInterface.OnClickListener.onClick(DialogInterface,int)
I've tried to implement the method above, no success.
Can somebody help me with this?
Ty!
EDIT:
detalhes_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="14dp"
android:layout_y="14dp"
android:textSize="25dp" />
<TextView
android:id="#+id/textView2"
android:layout_width="455dp"
android:layout_height="wrap_content"
android:layout_x="14dp"
android:layout_y="78dp"
android:textSize="18dp" />
<TextView
android:id="#+id/textView3"
android:layout_width="170dp"
android:layout_height="wrap_content"
android:layout_x="285dp"
android:layout_y="19dp"
android:textSize="22dp" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="14dp"
android:layout_y="395dp"
android:text="Adicionar aos Pedidos"
android:visibility="visible" />
</AbsoluteLayout>
Remove this code:
mButton.setOnClickListener((android.view.View.OnClickListener) this);
return view;
}
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button1:
PedidosFragment array = (PedidosFragment)getFragmentManager().findFragmentById(R.id.fragment3);
array.criaArray(txtNome,txtDescr);
break;
}
}
Replace this code...
mButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button1:
PedidosFragment array = (PedidosFragment)getFragmentManager().findFragmentById(R.id.fragment3);
array.criaArray(txtNome,txtDescr);
break;
}
});
return view;
}
As the error says your have to implement (add in your class) a method with the name onClick with a parameter of type DialogInterface and another one of type int.
That is because your are implementing an interface which is a kind of contract. All methods of the interface you implement it is mandatory to you to create it on your class even if it has no code at all.
Like:
#Override
public void onClick(DialogInterface dialogInterface, int i){}
EDIT
Sorry, I just saw your code and see the the method is there what you need to do is to add the right parameters. Right now you are passing just a view.
Can you use Linear Layout.
Why did use absolute layout?
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" ><TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="14dp"
android:layout_y="14dp"
android:textSize="25dp" />
<TextView
android:id="#+id/textView2"
android:layout_width="455dp"
android:layout_height="wrap_content"
android:layout_x="14dp"
android:layout_y="78dp"
android:textSize="18dp" />
<TextView
android:id="#+id/textView3"
android:layout_width="170dp"
android:layout_height="wrap_content"
android:layout_x="285dp"
android:layout_y="19dp"
android:textSize="22dp" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="14dp"
android:layout_y="395dp"
android:text="Adicionar aos Pedidos"
android:visibility="visible" />
</LinearLayout>`
Can You try this...