I have 3 classes. In every class I have 2 buttons like yes and no.
I want to pass 1 for yes and 0 for no.Finally I want to count the total number,
I mean if someone presses ' yes ' every time then it should be 3.
How to do it?`
passing values by buttons and count the whole thing
//this is 1st class
package com.atlantis.learnactivities;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Main extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button b1 = (Button) findViewById(R.id.b1);
b1.setOnClickListener (new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(Main.this,Second.class));
}
});
Button b2 = (Button) findViewById(R.id.b2);
b2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(Main.this,Second.class));
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
//this is 2nd class
package com.atlantis.learnactivities;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Second extends Activity {
String gender =null;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
Button b3 = (Button) findViewById(R.id.b3);
b3.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(Second.this,Three.class));
}
});
Button b4 = (Button) findViewById(R.id.b4);
b4.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent(Second.this,Four.class));
}
});
}
}
Use sharedPreference.
When click button add an integer value.
To add
SharedPreferences.Editor editor = getPreferences(MODE_PRIVATE).edit();
editor.putInt("btn_value", "value");
editor.commit();
To retrieve data from shared preference
SharedPreferences prefs = getPreferences(MODE_PRIVATE);
int value = prefs.getInt("btn_value", -1);
In your current Activity, create a new Intent:
Intent i = new Intent(Main.this, Second.class);
i.putExtra("new_variable_name","value");
startActivity(i);
Then in the Second Activity, retrieve those values:
Bundle extras = getIntent().getExtras();
if (extras != null) {
String value = extras.getString("new_variable_name");
}
You don't need to use SharedPreferences to pass data in the same application.
If you don't need to Store the values and just pass it from one class to the next, use putExtra with intent.
Eg. Inside your click listener:
intent.putExtra("value", 1);
//or intent.putExtra("value", "1") , depending on whether you want to use it as a String or int
And in the class you are passing the value to, retrieve it
this.getIntent().getExtras().getString("value");
//this.getIntent().getExtras().getInt("value");
check:
http://pkhandroid.wordpress.com/2012/10/02/post9-intent-message-passing-within-activities/
http://mobileorchard.com/android-app-development-using-intents-to-pass-data-and-return-results-between-activities/
Related
I am very new to android programming. I want to use a code that takes me to MainActivity from my current activity on a click of a Button.
Here is my current code:
package com.example.flashlightapp;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Whitelight extends Activity implements OnClickListener {
Button b1 = (Button) findViewById(R.id.b3);
Intent i = new Intent(this, MainActivity.class);
{
this.startActivity(i);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_whitelight);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
What should I put in
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
At first you must check if you declared all your activities in the manifest.xml file.
and in your Java code try this:
package com.example.flashlightapp;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Whitelight extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_whitelight);
Button b1 = (Button) findViewById(R.id.b3);
b1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i = new Intent(Whitelight.this, MainActivity.class);
this.startActivity(i);
}
});
}
}
This tutorial explains how to use intents and listeners : http://goo.gl/phLWkx
Try this..
public class Whitelight extends Activity implements OnClickListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_whitelight);
Button b1 = (Button) findViewById(R.id.b3); // Initialization of Button
b1.setOnClickListener(this); // Initialization of ClickListener to the Button
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent i = new Intent(this, MainActivity.class);
startActivity(i);
}
}
Follow the links
http://developer.android.com/index.html
http://developer.android.com/training/index.html
http://www.mkyong.com/tutorials/android-tutorial/
Use following :
Button b1;
public class Whitelight extends Activity implements OnClickListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_whitelight);
b1 = (Button) findViewById(R.id.b3); // Initialization of Button
b1.setOnClickListener(this); // Initialization of ClickListener to the Button
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v==b1){
Intent i = new Intent(this, MainActivity.class);
startActivity(i);
}
}
}
in onClick(...) :
you can choose if your button is press then perform specific activity, in your case if you press b1 button then perform button specific activity :
so we can check view v==b1 button. if you want to more button then
if(v==b1){
Intent i = new Intent(this, MainActivity.class);
startActivity(i);
}
else if(v==b2)
{
// perform another action ;
}
I want to implement 2 activities , one is a listview with image and text which works well now. The other one is a onClicklistener when I click any ListItem it will start another activity to show more information, with 1 previous button and next button to see the Prev information or next. However there is something wrong with the button. It can only see the previous one and next one once. Which means you can't click the next button twice. Any suggestions will be appreciated .
Here is my main activity code
package com.example.manchesterunited;
import com.example.manchesterunited.R;
import android.os.Bundle;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.Intent;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends ListActivity {
static PlayerData data = new PlayerData();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CustomAdapter adapter = new CustomAdapter(this);
setListAdapter(adapter);
}
public void onListItemClick(ListView l,View v, int pos, long id){
int playerId = (int)id;
Toast.makeText(getApplicationContext(),"Selected "+data.getName(pos),Toast.LENGTH_SHORT).show();
Intent intent = new Intent(this, InfoActivity.class);
intent.putExtra("playerId", playerId);
startActivity(intent);
}
}
And here is the second activity
package com.example.manchesterunited;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class InfoActivity extends Activity {
TextView dobText;
TextView pobText;
TextView internationalText;
Button prevButton;
Button nextButton;
PlayerData data = new PlayerData();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_info);
dobText = (TextView)findViewById(R.id.textView1);
pobText = (TextView)findViewById(R.id.textView2);
internationalText = (TextView)findViewById(R.id.textView3);
prevButton = (Button)findViewById(R.id.prev);
nextButton = (Button)findViewById(R.id.next);
Intent intent = getIntent();
final int playerId = intent.getExtras().getInt("playerId");
dobText.setText("Birthdate:"+String.valueOf(data.getPlayer(playerId).getDob()));
pobText.setText("Birthplace:"+String.valueOf(data.getPlayer(playerId).getPob()));
internationalText.setText("International:"+data.getPlayer(playerId).getInternational());
prevButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
int newId = playerId-1;
dobText.setText("Birthdate:"+String.valueOf(data.getPlayer(newId).getDob()));
pobText.setText("Birthplace:"+String.valueOf(data.getPlayer(newId).getPob()));
internationalText.setText("International:"+data.getPlayer(newId).getInternational());
}
});
nextButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
int newId = playerId+1;
dobText.setText("Birthdate:"+String.valueOf(data.getPlayer(newId).getDob()));
pobText.setText("Birthplace:"+String.valueOf(data.getPlayer(newId).getPob()));
internationalText.setText("International:"+data.getPlayer(newId).getInternational());
}
});}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_info, menu);
return true;
}
}
You're not updating the playerID.
You're just getting a new ID.
you should put
int newId = playerId+1;
playerID = newId; //insert this line
so that when you click again,
playerID gets updated.
You are always adding just 1 to player ID which will now point to next item. But as soon as you re-click the button it will have the same player ID that was passed through intent. So again it will add in the same value. Make a new variable which will store the current player ID that is visible and keep on incrementing it then you will be able to browse next and vice versa in the previous case.
You can't increment player ID as it has been declared as final, so you can either make a global variable or put a variable in intent and increment it on button clicks.
nextButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v)
{
// TODO Auto-generated method stub
//make newId global then it will work. And keep on updating it when the button is clicked accordingly.
newId = playerId+1;
dobText.setText("Birthdate:"+String.valueOf(data.getPlayer(newId).getDob()));
pobText.setText("Birthplace:"+String.valueOf(data.getPlayer(newId).getPob()));
internationalText.setText("International:"+data.getPlayer(newId).getInternational());
}
});}
Try this on InfoActivity,
private int playerId;
...
...onCreate(...){
...
playerId = intent.getExtras().getInt("playerId");
prevButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
...
playerId--;
dobText.setText("Birthdate:"+String.valueOf(data.getPlayer(playerId).getDob()));
pobText.setText("Birthplace:"+String.valueOf(data.getPlayer(playerId).getPob()));
internationalText.setText("International:"+data.getPlayer(playerId).getInternational());
}
}
nextButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
...
playerId++;
dobText.setText("Birthdate:"+String.valueOf(data.getPlayer(playerId).getDob()));
pobText.setText("Birthplace:"+String.valueOf(data.getPlayer(playerId).getPob()));
internationalText.setText("International:"+data.getPlayer(playerId).getInternational());
}
}
}
I want to alert dialog to display if the password and login id doesn't match. I tried the following code, but when i run if the text are same then it executes, but in the case if the password and Login Id doesn't match an alert is supposed to be display but instead the process exits saying unfortunately your project is ended.
I have attached my code below
package com.example.explicitintent;
import java.security.PublicKey;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
Button b1, b2,b3;
EditText e1, e2;
String username="saras", password="greek";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
e1 = (EditText) findViewById(R.id.editText0001);
e2 = (EditText) findViewById(R.id.editText0002);
b1 = (Button) findViewById(R.id.button0002);
b1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0)
{
// TODO Auto-generated method stub
if (username.equals(e1.getText().toString()) && (password.equals(e2.getText().toString())))
{
Intent b = new Intent(MainActivity.this,Contacts.class);
String s = e1.getText().toString();
String s1 = e2.getText().toString();
b.putExtra("d1", s);
b.putExtra("d2", s1);
startActivity(b);
}
else
{
AlertDialog.Builder alt = new AlertDialog.Builder(getApplicationContext());
alt.setIcon(R.drawable.ic_launcher);
alt.setTitle("WARNING");
alt.setMessage("Do u want to re-enter password");
alt.setPositiveButton("YES", new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface arg0, int arg1)
{
Toast.makeText(getApplicationContext(), "OK", Toast.LENGTH_SHORT).show();
}
});
alt.setNegativeButton("NO",new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface arg0, int arg1)
{
Toast.makeText(getApplicationContext(),"OK", Toast.LENGTH_SHORT).show();
}
});
alt.show();
}
}
});
b2 = (Button) findViewById(R.id.button0003);
b2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent c = new Intent(MainActivity.this, Reset.class);
startActivity(c);
}
});
b3 = (Button) findViewById(R.id.button1);
b3.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View arg0)
{
Toast.makeText(getApplicationContext(),"Password Saved", Toast.LENGTH_LONG).show();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Change this line
AlertDialog.Builder alt = new AlertDialog.Builder(getApplicationContext());
to
AlertDialog.Builder alt = new AlertDialog.Builder(arg0.getContext());
and you should change arg0 to something meaningful like view or v. If that doesn't work then please post the logcat so we can see what error you are getting. You need to use the appropriate Context for the situation and here you want the AlertDialog to use the Activity Context which is the same Context that your Button (or arg0) uses.
Note MainActivity.this will do the same thing here as argo.getContext() but I was recently informed that it is bad practice for reasons such as if you want to re-use this code then you have to change the activity name part of the code. Its a less dynamic way of accessing the Context.
Here is a good SO answer that addresses the issue of Context. It can be a tricky concept to grasp at first so you may want to read over it a few times and keep it close by.
*I've been going nuts with this problem the last few days.I'm trying to use SharedPreferences to allow my users to save the selected option of the in-game audio via the ToggleButton but everytime when I run my app and hit my "Done" button to go back to the main_activity screen and then click on settings again it never saves.I've done some research on this by googling,my book and this site but by many methods I've tried the result is the same.
I'm new to android development let alone app development so as much as I learned these past few weeks this has been a major roadblock for me and I apologize if this question has been covered already on this site but I'm at a real loss on what I'm doing wrong here.
Here is my code from my settings activity.
package com.fullfrontalgames.numberfighter;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.ToggleButton;
public class Settings extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.settings);
Button Notifications = (Button) findViewById(R.id.Notifications);
Button Done = (Button) findViewById(R.id.done);
Button AccountSettings = (Button) findViewById(R.id.AccountSettings);
final ToggleButton AT = (ToggleButton) findViewById(R.id.AudioToggle);
AT.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
{
if ((AT.isChecked()))
{
SharedPreferences appPrefs =
getSharedPreferences("com.fullfrontalgames.numberfighter.Settings_preferences",
MODE_PRIVATE);
SharedPreferences.Editor editor = appPrefs.edit();
editor.putBoolean("atpref", AT.isChecked()); //value to store
editor.commit();
}
}
}
});
SharedPreferences appPrefs =
getSharedPreferences("com.fullfrontalgames.numberfighter.Settings_preferences",
MODE_PRIVATE);
boolean atpref = appPrefs.getBoolean("atpref", true); //default is true
AT.setChecked(atpref);
Done.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent Intent = new Intent(Settings.this,activity_main.class);
Intent.setFlags(android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(Intent);
}
});
Notifications.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent("com.fullfrontalgames.numberfighter.Notifications"));
}
});
AccountSettings.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
startActivity(new Intent("com.fullfrontalgames.numberfighter.AccountSettings"));
}
});
}
public void onToggleClicked(View view) {
// Is the toggle on?
boolean on = ((ToggleButton) view).isChecked();
if (on) {
view.setSoundEffectsEnabled(true);
} else {
view.setSoundEffectsEnabled(false);
}
}
}
If you are trying to save the ToggleButton's state when it is false, simply remove the if-statement in your OnClickListener:
if ((AT.isChecked()))
I want the values of edit text restored when user comes back to my first activity?
Please help me out.
Thanks in advance
this is my first activity code for getting user values in edit text
public class IntentActivity extends Activity {
EditText ed1, ed2;
float ed1_val, ed2_val;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ed1 = (EditText) findViewById(R.id.editText1);
ed2 = (EditText) findViewById(R.id.editText2);
Button next = (Button) findViewById(R.id.button1);
next.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(),
Second_activity.class);
startActivity(intent);
}
});
}
/** Called when the activity is first created. */
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
ed1_val = Float.parseFloat(ed1.getText().toString());
ed2_val = Float.parseFloat(ed2.getText().toString());
Log.v("TAG", "inside saved instance");
savedInstanceState.putFloat("ed1", +ed1_val);
savedInstanceState.putFloat("ed2", +ed2_val);
}
#Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
Log.v("TAG", "inside on restore");
float ed_val = savedInstanceState.getFloat("ed1");
float ed2_val = savedInstanceState.getFloat("ed2");
ed1.setText("" + ed_val);
ed2.setText("" + ed2_val);
}
}
this is my second activity code
public class Second_activity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.second_xml);
Button back = (Button) findViewById(R.id.button1);
back.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(),
IntentActivity.class);
startActivity(intent);
}
});
}
}
It is not a good idea to start the first activity again on back pressed. Call finish() in the second activity. This will lead to the resume of the first activity which is what you need.
back.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
finish(); }
});
}
You don't need neither onSaveInstanceState nor onRestoreInstanceState.
Just call finish in the onClick listener for the button in the second Activity:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class IntentActivity extends Activity {
EditText ed1, ed2;
float ed1_val, ed2_val;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ed1 = (EditText) findViewById(R.id.editText1);
ed2 = (EditText) findViewById(R.id.editText2);
Button next = (Button) findViewById(R.id.button1);
next.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(),
Second_activity.class);
startActivity(intent);
}
});
}
}
This is the second one:
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Second_activity extends Activity {
// TODO Auto-generated method stub
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second_xml);
Button back = (Button) findViewById(R.id.button1);
back.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
finish();
}
});
}
}
That way you are resuming the previous Activity instead of starting new one.
If you need to pass data between them you could use startActivityForResult / onActivityResult and setResult methods:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class IntentActivity extends Activity {
private static final int GET_VALUES_REQUEST_ID = 1;
public static final String FIRST_VALUE_ID = "first_value_id";
public static final String SECOND_VALUE_ID = "second_value_id";
private static final float DEFAULT_VALUE = 0;
EditText ed1, ed2;
float ed1_val, ed2_val;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ed1 = (EditText) findViewById(R.id.editText1);
ed2 = (EditText) findViewById(R.id.editText2);
Button next = (Button) findViewById(R.id.button1);
next.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(),
Second_activity.class);
startActivityForResult(intent, GET_VALUES_REQUEST_ID);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case GET_VALUES_REQUEST_ID: {
if (Activity.RESULT_OK == resultCode) {
ed1_val = data.getFloatExtra(FIRST_VALUE_ID, DEFAULT_VALUE);
ed2_val = data.getFloatExtra(SECOND_VALUE_ID, DEFAULT_VALUE);
setValues();
}
break;
}
}
super.onActivityResult(requestCode, resultCode, data);
}
protected void setValues() {
ed1.setText(Float.toString(ed1_val));
ed2.setText(Float.toString(ed2_val));
}
}
The second activity could be something like that:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Second_activity extends Activity {
// TODO Auto-generated method stub
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second_xml);
Button back = (Button) findViewById(R.id.button1);
back.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent data = new Intent();
data.putExtra(IntentActivity.FIRST_VALUE_ID, 324f);
data.putExtra(IntentActivity.SECOND_VALUE_ID, 32234f);
setResult(Activity.RESULT_OK, data);
finish();
}
});
}
}
This is a very basic example so I just hardcoded some return values - please implement something more meaningful.
Beside that you could avoid using underscores as word separator in class names - camel case is much more accepted as name convention.
just finish the second activity don't start it via intent.
When you finish the second activity first activity will be automatically resumed,
you can go for overriding protected void onSaveInstanceState(Bundle outState) and protected void onRestoreInstanceState(Bundle savedInstanceState)
Here is an example
Remember it will work when you will not finish your previous activity.Do this in your first activity.
You are starting a new activity by pressing back button on Second Activity. The new activity instance is not the previous one that has started the Second Activity hence onRestoreInstanceState callback is not getting called.
Its easy if you do not need to send data back to the first activity. How do send back data without using an intent.