So lets say i have 4 buttons , and each button contains an intent which navigates to an activity.They all navigate to a single same activity . When i click the first button i want that new activity to show "Hi" , When i click the second button i want it to show "Bye" and so on . How do i do that ?
Here is a simple code to start with
public class Intentt extends Activity {
Button b1,b2,b3,b4;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_intentt);
b1 = (Button)findViewById(R.id.button2);
b2 = (Button)findViewById(R.id.button3);
b3 = (Button)findViewById(R.id.button4);
b4 = (Button)findViewById(R.id.button5);
b1.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
startActivity(i);
}
});
b2.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
startActivity(i);
}
});
b3.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
startActivity(i);
}
});
b4.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
startActivity(i);
}
});
}
Just pass some data through intent extras, or intent extra Bundle:
Intent i=new Intent(context,MainActivity.class);
i.putExtra(id, 453);
context.startActivity(i);
Example:
Button b1, b2, b3, b4;
Context context = this;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_intentt);
b1 = (Button) findViewById(R.id.button2);
b2 = (Button) findViewById(R.id.button3);
b3 = (Button) findViewById(R.id.button4);
b4 = (Button) findViewById(R.id.button5);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(context, MainActivity.class);
i.putExtra(MainActivity.ID_ACTION, MainActivity.ACTION_1);
startActivity(i);
}
});
b2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(context, MainActivity.class);
i.putExtra(MainActivity.ID_ACTION, MainActivity.ACTION_2);
startActivity(i);
}
});
}
And then in that activity you can switch on that values getting them like that:
String id = intent.getStringExtra("id");
int id = intent.getIntExtra("id",-1);
and then use the if-elseif-else or switch statement(s) to change the actions based on the passed action, so you can display your messages
To properly recieve them you need to set activity's launchMode to "standard" because of this bug in AndroidManifest.xml and create
public static final int ACTION_1 = 1;
public static final int ACTION_2 = 2;
public static final int ACTION_NULL = -1;
public static final String ID_ACTION = "action_id";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
int id = getIntent().getIntExtra(ID_ACTION, -1);
if (id == ACTION_NULL) {
Log.d("TAG", "id is null");
Toast.makeText(MainActivity.this, "id is null!", Toast.LENGTH_SHORT).show();
} else if (id == ACTION_1) {
Log.i("TAG", "ALLOHA! from button 1");
Toast.makeText(MainActivity.this, "Aloha from button 1!", Toast.LENGTH_LONG).show();
} else if (id == ACTION_2) {
Log.i("TAG", "Hello from button 2");
Toast.makeText(MainActivity.thi,"Hello from button 2!", Toast.LENGTH_LONG).show();
}
}
In each intent you could pass parameterts
Intent i=new Intent(context,SendMessage.class);
i.putExtra("KEY_MESSAGE", "Hola amigo");
In the other activity
Intent i = getIntent();
String message = i.getStringExtra("KEY_MESSAGE")
Toast.make(this,message,Toast.LENGTH_SHORT).show()
Re write the button click listener as follows :
b1.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
i.putExtra("Data","Hi");
startActivity(i);
}
});
b2.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
i.putExtra("Data","Hello");
startActivity(i);
}
});
b3.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
i.putExtra("Data","Bye");
startActivity(i);
}
});
b4.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(Intentt.this,MainActivity.class);
i.putExtra("Data","See you");
startActivity(i);
}
});
In your MainActivity class onCreate Method, you can access the passed data by :
String passedData = getIntent().getStringExtra("Data");
you can use this passedData to display on screen.
Do it like this:
public class Intentt extends Activity implements View.OnClickListener {
Button b1,b2,b3,b4;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_intentt);
b1 = (Button)findViewById(R.id.button2);
b2 = (Button)findViewById(R.id.button3);
b3 = (Button)findViewById(R.id.button4);
b4 = (Button)findViewById(R.id.button5);
b1.setOnClickListener(this);
b2.setOnClickListener(this);
b3.setOnClickListener(this);
b4.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button2:
Intent i = new Intent(Intentt.this,MainActivity.class);
i.putExtra('"STRING_I_NEED"', "Hi");
startActivity(i)
break;
case R.id.button3:
Intent i = new Intent(Intentt.this,MainActivity.class);
i.putExtra('"STRING_I_NEED"', "Bye");
startActivity(i)
break;
case R.id.button4:
break;
.
.
.
}
}
}
After that in your mainActivity retrieve string that you sent with:
Bundle extras = getIntent().getExtras();
String s = extras.getString("STRING_I_NEED");
Related
So I've got multiple buttons in one activity, and I can only use them one after another. I've read I need to do something with the (OnClickListener) part but I'm unsure what or how to do it. Any help is greatly appreciated. Code is below:
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Main2Activity extends AppCompatActivity {
private Button B3;
private Button B4;
private Button B5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
}
});
}
private void moveToDanceScheduleMenu () {
Intent intent = new Intent(Main2Activity.this, DanceScheduleMenu.class);
startActivity(intent);
B4 = findViewById(R.id.button10);
B4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToWhatsOn();
}
});
}
private void moveToWhatsOn () {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
B5 = findViewById(R.id.button11);
B5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToMainResultsMenu();
}
});
}
EDIT: thanks guys for all the help- out at the moment so when I get home I’ll test these. They look very similar to what I’ve read so they should work.. thanks!
You are setting your click listeners sequentially. If you want all the buttons to be clickable at any time, move the listeners into your onCreate():
protected void onCreate() {
B3.setOnClickListener(){};
B4.setOnClickListner(){};
// etc.
}
A click listener is just that – it "listens" for clicks. Your B3, for example, is the only one listening when the Activity gets created, so all the other buttons will ignore your clicks on them. When B3 is clicked, moveToDanceScheduleMenu() is invoked and B4 starts listening.
I hope that clears things up a bit.
Complete code:
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Main2Activity extends AppCompatActivity {
private Button B3;
private Button B4;
private Button B5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
}
});
B4 = findViewById(R.id.button10);
B4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToWhatsOn();
}
});
B5 = findViewById(R.id.button11);
B5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToMainResultsMenu();
}
});
}
private void moveToDanceScheduleMenu () {
Intent intent = new Intent(Main2Activity.this, DanceScheduleMenu.class);
startActivity(intent);
}
private void moveToWhatsOn () {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
}
}
You can put all your code in OnCreate() method like this
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Main2Activity extends AppCompatActivity {
private Button B3;
private Button B4;
private Button B5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B4 = findViewById(R.id.button10);
B5 = findViewById(R.id.button11);
B3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Main2Activity.this, DanceScheduleMenu.class);
startActivity(intent);
}
});
B4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
}
});
B5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToMainResultsMenu();
}
});
}
You are making Buttons depended of other Buttons in a Sequential order.
Try Binding Button and their OnclickListners in oncreate.Like this.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B4 = findViewById(R.id.button10);
B5 = findViewById(R.id.button11);
B3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
}
});
B4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToWhatsOn();
}
});
B5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToMainResultsMenu();
}
});
}
I think this code is work
public class Main2Activity extends AppCompatActivity {
private Button B3;
private Button B4;
private Button B5;
private a=false,b=false;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
a=true ;
}
});
}
private void moveToDanceScheduleMenu () {
Intent intent = new Intent(Main2Activity.this, DanceScheduleMenu.class);
startActivity(intent);
}
B4 = findViewById(R.id.button10);
B4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(a==true ){
moveToWhatsOn();
}
}
});
private void moveToWhatsOn () {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
b=true ;
B5 = findViewById(R.id.button11);
}
B5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(b==true){
moveToMainResultsMenu();
}
}
});
}
If you want to use a button only after a previous button was pressed, you should disable all next buttons in the begining in the onCreate() method and enable them later when the previous button was pressed
B3.setEnabled(true);
B4.setEnabled(false);
B5.setEnabled(false);
And then enable the next button after onClick
B3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
B4.setEnabled(true);
}
});
And as far for your code
public class Main2Activity extends AppCompatActivity {
private Button B3;
private Button B4;
private Button B5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B4 = findViewById(R.id.button10);
B5 = findViewById(R.id.button11);
B3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
}
});
B4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToWhatsOn();
}
});
B5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToMainResultsMenu();
}
});
}
private void moveToDanceScheduleMenu() {
Intent intent = new Intent(Main2Activity.this, DanceScheduleMenu.class);
startActivity(intent);
}
private void moveToWhatsOn() {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
}
}
There are several ways to interact with the buttons:
First method: Class implementation
public class Main2Activity extends AppCompatActivity implements OnClickListener {
private Button B3;
private Button B4;
private Button B5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B4 = findViewById(R.id.button10);
B5 = findViewById(R.id.button11);
B3.setOnClickListener(this);
B4.setOnClickListener(this);
B5.setOnClickListener(this);
}
public void onClick(View v){
if(v.getId()==B3.getId()){
moveToDanceScheduleMenu();
}else if(v.getId()==B4.getId()){
moveToWhatsOn();
}else if(v.getId()==B5.getId()){
moveToMainResultsMenu();
}
}
private void moveToDanceScheduleMenu () {
Intent intent = new Intent(Main2Activity.this,DanceScheduleMenu.class);
startActivity(intent);
}
private void moveToWhatsOn () {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
}
Second Method: Private variable (large blocks)
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
findViewById(R.id.button3).setOnClickListener(mGlobal_OnClickListener);
findViewById(R.id.button10).setOnClickListener(mGlobal_OnClickListener);
findViewById(R.id.button11).setOnClickListener(mGlobal_OnClickListener);
}
//Global On click listener for all views
final OnClickListener mGlobal_OnClickListener = new OnClickListener() {
public void onClick(final View v) {
switch(v.getId()) {
case R.id.button3:
moveToDanceScheduleMenu();
break;
case R.id.button10:
moveToWhatsOn();
break;
case R.id.button11:
moveToDanceScheduleMenu();
break;
}
}
};
private void moveToDanceScheduleMenu () {
Intent intent = new Intent(Main2Activity.this,DanceScheduleMenu.class);
startActivity(intent);
}
private void moveToWhatsOn () {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
}
Third Method: Online (small blocks)
public class Main2Activity extends AppCompatActivity{
private Button B3;
private Button B4;
private Button B5;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
B3 = findViewById(R.id.button3);
B4 = findViewById(R.id.button10);
B5 = findViewById(R.id.button11);
B3.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
}
});
B4.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToWhatsOn();
}
});
B5.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
moveToDanceScheduleMenu();
}
});
}
private void moveToDanceScheduleMenu () {
Intent intent = new Intent(Main2Activity.this,DanceScheduleMenu.class);
startActivity(intent);
}
private void moveToWhatsOn () {
Intent intent = new Intent(Main2Activity.this, WhatsOn.class);
startActivity(intent);
}
I have created a new layout name dialog_exit for onBackPressed but when I install and open, my application can not open and showing error close app
Please review my whole code and guide me how can I solve this problem
Here is my main activity code
public class MainActivity extends AppCompatActivity {
public Dialog mDialog;
public Button mDialogyes, mDialogno;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
createDialog();
}
private void createDialog() {
mDialog = new Dialog(this);
mDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
mDialog.setContentView(R.layout.dialog_exit);
mDialog.setCanceledOnTouchOutside(true);
mDialog.setCancelable(true);
mDialogyes = (Button) findViewById(R.id.yes);
mDialogno = (Button) findViewById(R.id.no);
mDialogyes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setFlags(intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addCategory(Intent.CATEGORY_HOME);
startActivity(intent);
finish();
System.exit(0);
mDialogno.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mDialog.dismiss();
}
});
}
});
}
#Override
public void onBackPressed() {
mDialog.show();
}
}
Here is my layout code as screenshot because
stackoverflow not allow me to add more code that why sharing image
Updated code of createDialog function
private void createDialog() {
mDialog = new Dialog(this);
mDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
mDialog.setContentView(R.layout.dialog_exit);
mDialog.setCanceledOnTouchOutside(true);
mDialog.setCancelable(true);
mDialogyes = (Button) mDialog.findViewById(R.id.yes);
mDialogno = (Button) mDialog.findViewById(R.id.no);
mDialogyes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setFlags(intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addCategory(Intent.CATEGORY_HOME);
startActivity(intent);
finish();
System.exit(0);
}
});
mDialogno.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mDialog.dismiss();
}
});
}
try this code
mDialogyes = (Button)mDialogyes. findViewById(R.id.yes);
mDialogno = (Button)mDialogyes. findViewById(R.id.no);
mDialogyes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setFlags(intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addCategory(Intent.CATEGORY_HOME);
startActivity(intent);
finish();
System.exit(0);
}
});
mDialogno.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mDialog.dismiss();
}
});
You have to do like this
mDialogyes = (Button) mDialog.findViewById(R.id.yes);
mDialogno = (Button) mDialog.findViewById(R.id.no);
what I am trying to do is call fragment from an activity with a FragmentTransaction, at that point it works for me, the problem is that when the activity calls the fragment, the two are presented on the screen.
Activity java code :
public class ElectricalCalculators extends AppCompatActivity implements View.OnClickListener {
Button kwbutton , evbutton ;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_electrical_calculators);
findViewById(R.id.menu_back).setOnClickListener(this);
findViewById(R.id.menu_home).setOnClickListener(this);
Button kwbutton = (Button) findViewById(R.id.ampsBoutton);
kwbutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , AmpsConversion.class);
startActivityForResult(intent,0);
}
});
Button evbutton = (Button) findViewById(R.id.evBoutton);
evbutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , ElectronVoltsConversion.class);
startActivityForResult(intent,0);
}
});
Button jbutton = (Button) findViewById(R.id.joulesBoutton);
jbutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , JoulesConversion.class);
startActivityForResult(intent,0);
}
});
Button Kwbutton = (Button) findViewById(R.id.kwBoutton);
Kwbutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , KwConversion.class);
startActivityForResult(intent,0);
}
});
Button Kwhbutton = (Button) findViewById(R.id.kwhBoutton);
Kwhbutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent( v.getContext() , KwhConversion.class);
startActivityForResult(intent,0);
}
});
}
#Override
public void onClick(View v) {
Class clazz = null;
FragmentManager fragmentManager = getSupportFragmentManager();
if (v.getId() == R.id.menu_back){
fragmentManager.beginTransaction().replace(R.id.elctricalCalculator, new Fragmen2()).commit();
}
/** switch (v.getId()) {
case R.id.menu_back:
//clazz = Fragmen2.class;
fragmentManager.beginTransaction().replace(R.id.elctricalCalculator, new Fragmen2()).commit();
break;
case R.id.menu_home:
clazz = MainActivity.class;
break;
/**case R.id.five_tabs_changing_colors:
clazz = FiveColorChangingTabsActivity.class;
break;*/
//}
// startActivity(new Intent(this, clazz));
}
}
Fragment code :
public class Fragmen2 extends Fragment {
Button Tboton,
Lboton,
Pboton,
Dboton,
wboton,
eboton;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_fragmen2, container, false);
Tboton = (Button)view.findViewById(R.id.boton1fragmen2); /**boton que conecta el fragment 2 con la actividad temperatura */
Tboton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent Tboton = new Intent( getActivity() ,Temperatura.class);
startActivity(Tboton);
}
});
Lboton =(Button)view.findViewById(R.id.boton2fragmen2);
Lboton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent Lboton = new Intent(getActivity() , Dimensions.class);
startActivity(Lboton);
}
});
View v = inflater.inflate(R.layout.fragment_fragmen1, container, false);
/**Pboton = (Button)view.findViewById(R.id.boton3fragmen2);
Pboton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});*/
Dboton = (Button)view.findViewById(R.id.boton4fragmen2);
Dboton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent Dboton = new Intent(getActivity(),Dimensions.class);
startActivity(Dboton);
}
});
wboton = (Button)view.findViewById(R.id.boton3fragmen2);
wboton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent wboton = new Intent(getActivity(),Weight.class);
startActivity(wboton);
}
});
eboton = (Button)view.findViewById(R.id.boton4fragmen2);
eboton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent eboton = new Intent(getActivity(),ElectricalCalculators.class);
startActivity(eboton);
}
});
return view;
}
}
I want to pass an XML resource from one activity to another activity using Java Code? I don't want to create separate different activities for different buttons.
ImageButton imageBttn = (ImageButton)findViewById(R.id.imageButton1);
imageBttn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, info.class));
}
});
Pseudocode to explain what I'm trying to do:
If BUTTON_1 is clicked
-Pass swirl.png to info.class
If BUTTON_2 is clicked
-Pass golden.png to info.class
If BUTTON_3 is clicked
-Pass arcade.png
imageBttn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, info.class)
intent.putExtra("image",R.drawable.ic_search_grey);
startActivity(intent);
}
});
On Mainactvitiy get the int drawable
int res = getIntent().getIntExtra("image", -1);
if(res > -1) {
Drawable drawable = getResources().getDrawable(res, null);
imgBtn.setImageDrawable(drawable);
}
InfoActivity.java
public class InfoActivity extends Activity {
private static final String EXTRA_IMAGE = "image";
public static void launch(Activity activity, #DrawableRes int imageResId) {
Intent intent = new Intent(activity, InfoActivity.class);
intent.putExtra(EXTRA_IMAGE, imageResId);
activity.startActivity(intent);
}
#Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_info);
int imageResId = getIntent().getIntExtra(EXTRA_IMAGE, -1);
if (imageResId == -1) {
throw new IllegalArgumentException(EXTRA_IMAGE);
// or set error/default image resource id
}
// ... something to do with imageResId
}
}
MainActivity.java
button1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
InfoActivity.launch(MainActivity.this, R.drawable.swirl);
}
});
button2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
InfoActivity.launch(MainActivity.this, R.drawable.golden);
}
});
button3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
InfoActivity.launch(MainActivity.this, R.drawable.arcade);
}
});
}
I been working on Android Native App , What i was trying to do is :
Activities - A -> B -> C Then A-> B -> C -> C .
From C Activity if it again point to C then i want to remove C , B from stack manually .
On my back it should move only to A .
I tried finish() but problem is :
Activities - A -> B -> C Then A-> B -> C -> C on finish A -> B -> C required state A-> C .
Is anyone know how to catch all activities in stack and remove specific activities from stack ??
In Activity C, override onBackPressed and add in something like:
#Override
public void onBackPressed() {
if (shouldGoBackToA) { // There are various ways this could be set
Intent intent = new Intent(this, AActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
} else {
finish();
}
}
FLAG_ACTIVITY_CLEAR_TOP will cause it to go down the stack to the existing copy of A Activity instead of starting a new one. From the docs:
public static final int FLAG_ACTIVITY_CLEAR_TOP
If set, and the activity being launched is already running in the current task, then instead of launching a new instance of that activity, all of the other activities on top of it will be closed and this Intent will be delivered to the (now on top) old activity as a new Intent.
While calling intent pass a flag called actvity clear top like this:
Intent newIntent=new Intent(this,MainActivity.class);
newIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(newIntent);
You can use this :
In A activity while passing to B activity, the intent should be added with a flag FLAG_ACTIVITY_NO_HISTORY like this,
Button b=(Button) findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent newIntent=new Intent(AActivity.this,Bactivty.class);
newIntent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(newIntent);
}
});
While moving to CActivity:
Button b = (Button) findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent newIntent = new Intent(Bactivty.this, CActivity.class);
startActivity(newIntent);
}
});
On backpress will take you to AActivity now.
Step 1: Start activty for result A -> B -> C1 -> C2..
Call your Activity with startActivityForResult
Intent intent = new Intent(yourActivity.this, nextActivity.class);
startActivityForResult(intent, 1);
Step 2: In C2 specify that you want to go back to A..
Whenever you are done with your activity write the below code
Intent i = getIntent();
i.putString("Result","GottoA");
setResult(Activity.RESULT_OK, i);
finish();
Step 3: Whenever C2 finishes , previsus stack activit's onActivityResult is called.. so u can check in C1 and B onActivityResult whether you have set any result bck.. and finish accordingly
and impliment the following code in Activity B and c
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Intent i = getIntent();
if (resultCode == RESULT_OK && i.getString("Result","null").equals"GottoA") {
i.putString("Result","GottoA");
setResult(RESULT_OK, i);
finish();
}
}
In Activity C, when back button is pushed start activity A like this:
#Override
public void onBackPressed() {
Intent intent = new Intent(getApplicationContext(), A.class);
intent.putExtra("EXIT", true);
startActivity(intent);
}
Then in Activity A's onCreate() do this
if (getIntent().getBooleanExtra("EXIT", false)) {
finish();
}
this complete example may help you...
public class ActivityA extends Activity {
public static final int ID_TEXTVIEW = 0xDEAF1;
public static final int ID_BUTTON = 0xDEAF2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
View contentView = getContentView(this);
TextView textView = (TextView) contentView.findViewById(ID_TEXTVIEW);
textView.setText("ActivityA");
setContentView(contentView);
final Button button = (Button) contentView.findViewById(ID_BUTTON);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ActivityA.this, ActivityB.class);
startActivity(intent);
}
});
}
public static View getContentView(Context context) {
LinearLayout layout = new LinearLayout(context);
layout.setOrientation(LinearLayout.VERTICAL);
layout.setGravity(Gravity.CENTER);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
layoutParams.gravity = Gravity.CENTER_HORIZONTAL;
TextView textView = new TextView(context);
textView.setLayoutParams(layoutParams);
textView.setId(ID_TEXTVIEW);
layout.addView(textView);
Button button = new Button(context);
button.setText("Next");
button.setLayoutParams(layoutParams);
button.setId(ID_BUTTON);
layout.addView(button);
return layout;
}
}
public class ActivityB extends Activity {
public static final String ACTION_FINISH = "com.myapp.test2.ACTION_FINISH";
public ActivityB() {
}
private FinishReceiver finishReceiver;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
View contentView = ActivityA.getContentView(this);
final TextView textView = (TextView) contentView
.findViewById(ActivityA.ID_TEXTVIEW);
textView.setText("ActivityB");
setContentView(contentView);
final Button button = (Button) contentView
.findViewById(ActivityA.ID_BUTTON);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ActivityB.this, ActivityC.class);
startActivity(intent);
}
});
finishReceiver = new FinishReceiver();
IntentFilter filter = new IntentFilter(ACTION_FINISH);
registerReceiver(finishReceiver, filter);
}
#Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(finishReceiver);
}
private class FinishReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(ACTION_FINISH)) {
finish();
}
}
}
}
public class ActivityC extends Activity {
public ActivityC() {
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
View contentView = ActivityA.getContentView(this);
final TextView textView = (TextView) contentView
.findViewById(ActivityA.ID_TEXTVIEW);
textView.setText("ActivityC");
setContentView(contentView);
final Button button = (Button) contentView.findViewById(ActivityA.ID_BUTTON);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ActivityB.ACTION_FINISH);
sendBroadcast(intent);
intent = new Intent(ActivityC.this, ActivityC.class);
startActivity(intent);
finish();
}
});
}
}