Passing Of Value From One Activity To Another In Android

Hi i have developed an app which has a text box and a search button when i enter a number in the text box and click on the search button it needs to pass the value entered to the n

Solution 1:

Mistakes you made:

1) Why are you trying to start activity twice?

startActivity(myIntent);   // this is OK
HomeActivity.this.startActivity(myIntent);

2) To pass entered text from one activity to another, you can use putExtra() method of Intent, for example:

myIntent.putExtra("SearchText", outlet_no);

So your complete code would be:

 Intent myIntent = new Intent(HomeActivity.this, StoreActivity.class);   
 myIntent.putExtra("SearchText", outlet_no);    
 startActivity(myIntent);

3) To receive value which you have passed from first activity:

Intent intent = getIntent();
Bundle bundle = intent.getExtras();
String outlet_no= bundle.getString("SearchText");

4) SharedPreferences:

FYI, SharedPreference is used to save small amount of data which can be reference and used later across application.

You should refer below links:

1. SharedPreferences
2. Intent
3. Intent and Intent Filters

Solution 2:

Intent myIntent = new Intent(HomeActivity.this, StoreActivity.class);
myIntent.putExtra("searchString", outlet_no);       
startActivity(myIntent);

This will send the searchString to the StoreActivity

and in StoreActivity you can retrieve the value using:

String s = getIntent.getStringExtra("searchString");

Solution 3:

In your onClick method, have the following code:

    String outlet_no = outlet_id.getText().toString();
    if(!outlet_no.isEmpty()){
        Intent myIntent = new Intent(HomeActivity.this, StoreActivity.class);  
        myIntent.putExtra("outlet_id",outlet_no);
        startActivity(myIntent);
    }
    else{
        Toast.makeText(getApplicationContext(), "Please enter an outlet id", Toast.LENGTH_SHORT);
    }  

Now in the StoreActivity, in the onCreate() method have something like this:

String outlet_no = getIntent().getStringExtra("outlet_id");  
if (outlet_no != null) //Just a defensive check
   //Start your processing

Solution 4:

You can also do this with Intents.

Say, we have 2 activities: SourceActivity & DestinationActivity and we want to pass a value of SourceActivity to DestinationActivity

in your Button OnClickListener:

String str_outlet_no = outlet_no.getText().toString();
Intent intent = new Intent(SourceActivity.this, DestinationActivity.class);
intent.putExtra("outlet_no_key", outlet_no);
startActivity(intent);

and on the other side in DestinationActivity:

Intent intent = getIntent();
String desi = intent.getStringExtra("outlet_no");

and search desi from database

Solution 5:

You can try something like this:-

Activity A

myIntent.putExtra(var, value); // Putting the value
startActivity(myIntent);

Activity B

String value = getIntent().getStringExtra(var); // Getting the value