CODEWITHSUNDEEP
androidandroid-intentandroid-activity
user2966161
user2966161

Reputation:

Passing data between activities in Android?

I wish to pass the value of score from one activity to another. I addExtras to the intent and getExtras in the new activity but it doesn't seem to get the value.

Activity 1;

Intent intent = new Intent(Game.this, EndGame.class);
        intent.putExtra("put_score", score);
        startActivity(intent);
        Game.this.finish();

Activity 2;

Bundle extras = getIntent().getExtras();
    if (extras != null) {
        score = extras.getString("put_score");
    }

    setContentView(R.layout.endgame);

    scoreResult = (TextView) findViewById(R.id.scoreNum);

    scoreResult.setText(score);

Upvotes: 0

Views: 110

Answers (2)

nikis
nikis

Reputation: 11234

You problem is coming from the following piece of code in Bundle.java:

try {
    return (String) o;
} catch (ClassCastException e) {
    typeWarning(key, o, "String", e);
    return null;
}

Here o is the object you put to the bundle (bundle actually has a core storage of type Map<String, Object>, so, due to autoboxing, when you put int to the bundle, it will become Integer). But, unfortunately, Integer cannot be casted to String explicitly, so you get null instead. In other words: if you put int, then use getInt to retrieve the value.

Upvotes: 2

Yazan
Yazan

Reputation: 6082

you placed data in intent using putExtra not putExtras so read them the same way

use getXXExtra() XX is the dataType your data is,

based on the example, if score is Integer, then use:

getIntExtra("put_score", 0);//0 zero is default in case data was not found

http://developer.android.com/reference/android/content/Intent.html

Upvotes: 1

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