Develop Reference

Android : Choose Intent to open from Button

I'm working on android project. In my activity i have four buttons. The user has to select the particular button to receive the notifications. So the next time if i select Notifications(its a fragment of nav drawer) it should directly lead me to that particular activity instead of again selecting the department.
1st Run
Nav Drawer (select Notification)>>Opens Activity(to choose button to receive notification) >> Opens that particular activity
2nd Run
Nav Drawer(select Notification)>> Directly opens the selected activity
Notification.class
import android.app.Notification;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.NotificationCompat;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.mateoj.multiactivitydrawer.department.dept_1styeartab;
import com.pushbots.push.Pushbots;
public class notifications extends BaseActivity {
private WebView webView;
Button clickButton;
Button clickButton1;
Button clickButton2;
Button clickButton3;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Pushbots.sharedInstance().init(this);
Pushbots.sharedInstance().setCustomHandler(customHandler.class);
setContentView(R.layout.activity_notifications);
SharedPreferences preferences = getSharedPreferences("com.mateoj.multiactivitydrawer", MODE_PRIVATE);
final SharedPreferences.Editor editor = preferences.edit();
clickButton = (Button) findViewById(R.id.ncs);
clickButton1 = (Button) findViewById(R.id.nmech);
clickButton2 = (Button) findViewById(R.id.nece);
clickButton3 = (Button) findViewById(R.id.neee);
clickButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent show = new Intent(getApplicationContext(), noti_cse.class);
Pushbots.sharedInstance().tag("cse");
Pushbots.sharedInstance().untag("mech");
Pushbots.sharedInstance().untag("ece");
Pushbots.sharedInstance().untag("eee");
editor.putString("session", "cse").commit();
editor.commit();
startActivity(show);
}
});
clickButton1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent show = new Intent(getApplicationContext(), noti_mech.class);
Pushbots.sharedInstance().tag("mech");
Pushbots.sharedInstance().untag("ece");
Pushbots.sharedInstance().untag("eee");
Pushbots.sharedInstance().untag("cse");
editor.putString("session", "mech").commit();
editor.commit();
startActivity(show);
}
});
clickButton2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent show = new Intent(getApplicationContext(), noti_ece.class);
Pushbots.sharedInstance().tag("ece");
Pushbots.sharedInstance().untag("mech");
Pushbots.sharedInstance().untag("eee");
Pushbots.sharedInstance().untag("cse");
editor.putString("session", "ec").commit();
editor.commit();
startActivity(show);
}
});
clickButton3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent show = new Intent(getApplicationContext(), noti_eee.class);
Pushbots.sharedInstance().tag("eee");
Pushbots.sharedInstance().untag("ece");
Pushbots.sharedInstance().untag("mech");
Pushbots.sharedInstance().untag("cse");
editor.putString("session", "eee").commit();
editor.commit();
startActivity(show);
}
});
onStartUp();
}
#Override
protected void onDestroy() {
super.onDestroy();
onStartUp();
}
#Override
protected void onPause() {
super.onPause();
onStartUp();
}
#Override
protected void onStop() {
super.onStop();
onStartUp();
}
private void onStartUp()
{
SharedPreferences sharedPreferences = getSharedPreferences("com.mateoj.multiactivitydrawer", Context.MODE_PRIVATE);
String str = sharedPreferences.getString("session", "");
if (str.equals("cs")) {
clickButton.setClickable(true);
clickButton1.setClickable(false);
clickButton2.setClickable(false);
clickButton3.setClickable(false);
} else if (str.equals("mech")) {
clickButton.setClickable(false);
clickButton1.setClickable(true);
clickButton2.setClickable(false);
clickButton3.setClickable(false);
} else if (str.equals("ec")) {
clickButton.setClickable(false);
clickButton1.setClickable(false);
clickButton2.setClickable(true);
clickButton3.setClickable(false);
} else if (str.equals("eee"))
{
clickButton.setClickable(false);
clickButton1.setClickable(false);
clickButton2.setClickable(false);
clickButton3.setClickable(true);
}
}
/* private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
} */
#Override
protected boolean useDrawerToggle() {
return false;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.action_credits)
return true;
if (item.getItemId() == android.R.id.home)
onBackPressed();
return super.onOptionsItemSelected(item);
}
}
The onStartup code saves the preferences

passing values by buttons and count the whole thing

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/

SharedPreferences ToggleButton not saving

*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()))

Android Using SharedPreferences to save and retrieve values - Counter

Hello I am new to android and actually i am developing a application whereby the user would be clicking on a button and the button should record the click event - the counter should be incremented at each time the button is clicked. The button would be displayed in one activity and once the user has clicked the button, another activity would be displayed whereby the results would be shown.
Actually i am having problems in assigning the sharedPreferences to the button and then displaying it into the next activity hence having the number of clicks.
The code i am using is as follows:
MainActivity.java
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
/** Declare the variables being used */
public static final String GAME_PREFERENCES = "GamePrefs";
public static final String GAME_PREFERENCES_SCORE = "Score"; // Integer
int counter;
Button add;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
counter = 0;
add = (Button) findViewById (R.id.bAdd);
add.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
counter++;
Intent openClickActivity2 = new Intent("com.android.jay.Results");
startActivity(openClickActivity2);
}
});
}
}
Results.java
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.widget.TextView;
public class Results extends MainActivity{
public void onCreate(Bundle savedInstanceState) {
SharedPreferences mGameSettings;
super.onCreate(savedInstanceState);
mGameSettings = getSharedPreferences(GAME_PREFERENCES, Context.MODE_PRIVATE);
setContentView(R.layout.results);
final TextView DisplayResults =
(TextView) findViewById(R.id.bAdd);
if (mGameSettings.contains(GAME_PREFERENCES_SCORE)) {
DisplayResults.setText(mGameSettings.getString(GAME_PREFERENCES_SCORE, “counter”));
}
}
}
Any help to guide me would be much appreciated.Thank you

You will have to set GAME_PREFERENCES_SCORE in MainActivity. Do something like this after counter++:
getSharedPreferences(GAME_PREFERENCES, Context.MODE_PRIVATE).edit().setInt(GAME_PREFERENCES_SCORE, counter). commit();

Simply make a Preferences class
public class Preferences {
String MASTER_NAME = "mysticmatrix_master";
SharedPreferences mysticMatrixPref;
Preferences(Context context) {
mysticMatrixPref = context.getSharedPreferences(MASTER_NAME, 0);
}
public void setAddCount(int count) {
SharedPreferences.Editor prefEditor = mysticMatrixPref.edit();
prefEditor.putInt("count", count);
prefEditor.commit();
}
public int getAddCount() {
return mysticMatrixPref.getInt("count", 0);
}
}
and in your MainActivity.java put this code
public class MainActivity extends Activity implements OnClickListener {
ImageButton add;
Preferences cpObj;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
preferences = new Preferences(getApplicationContext());
/*
* getting the count variable and adding 1 in that to check the condition of showing rate activity and adds
*/
add = (Button) findViewById (R.id.bAdd);
add.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
cpObj = new Preferences(getApplicationContext());
cpObj.setAddCount(cpObj.getAddCount() + 1);
}
});
}
}
And in your result activity just get the count's value
import android.content.Context;
public class Results extends MainActivity{
Preferences cpObj;
public void onCreate(Bundle savedInstanceState) {
preferences = new Preferences(getApplicationContext());
setContentView(R.layout.results);
final TextView DisplayResults =
(TextView) findViewById(R.id.bAdd);
DisplayResults.setText(cpObj.getAddCount());
}
} }
By this you will get the default value of result as '0' and you can set that in your Preferences class

Use a method like this:
public static void SavePreference(Context context, String key, Integer value) {
SharedPreferences.Editor editor = PreferenceManager
.getSharedPreferences(GAME_PREFERENCES, Context.MODE_PRIVATE)
.edit();
editor.putInt(key, value);
editor.commit();
}
and in you onclick after counter++ add this:
SavePereference(context, "GAME_PREFERENCES_SCORE", counter);

Values in sharedpreferences are not cleared

I am developing an app in which I need to manage users session i.e when user logs in for the first time he must see the login page and once he is authenticated he is redirected to the home screen and tht time a value is set in sharedpreferences. Now on the home screen when the user clicks on logout button the values in shsredpreferences must be cleared and the next time the user opens the app he must be directed to login page.Unless and until user clicks logout he must not be shown the login page.
I am able to store values in sharedpreferences but not able to delete them.
here is my code for loginpage.java
package com.sess.eg;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class loginpage extends Activity {
/** Called when the activity is first created. */
EditText acc,user,pin;
Button login;
StringBuilder builder = new StringBuilder();
String UserName;
SharedPreferences.Editor prefs;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// SharedPreferences prefs1 = getPreferences(MODE_WORLD_READABLE);
// UserName= prefs1.getString("User", "Abcdef");
//
// System.out.println(UserName);
//
// if(UserName.equals("Ad"))
//
// {
// System.out.println(UserName);
// Intent i=new Intent(loginpage.this,homepage.class);
// startActivity(i);
// }
setContentView(R.layout.main);
acc = (EditText) findViewById(R.id.ed_login_acc);
user = (EditText) findViewById(R.id.ed_user_acc);
pin = (EditText) findViewById(R.id.ed_pin_acc);
login = (Button) findViewById(R.id.login_button);
SharedPreferences prefs1 = getPreferences(MODE_WORLD_READABLE);
login.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v) {
prefs.putString("User", "Ad");
prefs.commit();
//System.out.println(sendJson1());
//startService(new Intent(Login.this, MyService.class));
Intent i = new Intent(loginpage.this, homepage.class);
startActivity(i);
finish();
//System.out.println(UserName);
}
});
}
#Override
protected void onStart() {
SharedPreferences prefs1 = getPreferences(MODE_WORLD_READABLE);
UserName= prefs1.getString("User", "Abcdef");
System.out.println(UserName);
if(UserName.equals("Ad"))
{
System.out.println(UserName);
Intent i=new Intent(loginpage.this,homepage.class);
startActivity(i);
finish();
}
super.onStart();
}
}
here is my code for homepage.java
package com.sess.eg;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class homepage extends Activity{
Button logout;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home3);
logout = (Button) findViewById(R.id.logout);
logout.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v) {
SharedPreferences.Editor prefs = getPreferences(MODE_WORLD_WRITEABLE).edit();
prefs.clear();
// prefs.commit();
SharedPreferences prefs1 = getPreferences(MODE_WORLD_READABLE);
String UserName= prefs1.getString("User", "Abcdef");
System.out.println(UserName);
finish();
}
});
}
}

In your code:
//prefs.commit();
Change this. Remove it from the comments.
prefs.commit();
commit() is called to save your preferences changes.
"Commit your preferences changes back from this Editor to the SharedPreferences object it is editing. This atomically performs the requested modifications, replacing whatever is currently in the SharedPreferences.
Note that when two editors are modifying preferences at the same time, the last one to call commit wins. "
Read here.

You have commented out the calls to prefs.commit(). Uncomment them.