Saturday, July 21, 2012

Pass data between activity in andorid

When start a new activity in our main activity using startActivity(), data can be passed using Bundle.

Inside the main activity,
            Intent intent = new Intent();
           intent.setClass(MainActivity.this, NewActivity.class);
           Bundle bundle = new Bundle();
           bundle.putCharSequence("extraCharSequence", "hello");
           bundle.putInt("extraInt", 12345);

Get the data in onCreate() of the new activity,
    public void onCreate(Bundle savedInstanceState) {
       Bundle bundle = this.getIntent().getExtras();
       CharSequence dataCharSequence = bundle.getCharSequence("extraCharSequence");
       int dataInt = bundle.getCharSequence("extraInt");


The code this.getIntent().getExtras() return the map of all extras previously added with putExtra(), or null if none have been added.

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