Passing Data Between Activities using Extras

Put Extras

Intent mIntentToBeLame = new Intent(SecondActivity.this, MainActivity.class);
String message = "hey main, plz learn 2 be chill and not call the RA next time";
mIntentToBeLame.putExtra("MSG", message);

Get Extras

Example

Intent prevActivity = getIntent();
String name = prevActivity.getStringExtra("NAME");
int age = prevActivity.getIntExtra("AGE", 0);

Methods

getBooleanArrayExtra(String name)
getBooleanExtra(String name, boolean defaultValue)
getBundleExtra(String name)
getByteArrayExtra(String name)
getByteExtra(String name, byte defaultValue)
getCharArrayExtra(String name)
getCharExtra(String name, char defaultValue)
getCharSequenceArrayExtra(String name)
getCharSequenceArrayListExtra(String name)
getCharSequenceExtra(String name)
getDataString()
getDoubleArrayExtra(String name)
getDoubleExtra(String name, double defaultValue)
getExtras()
getFloatArrayExtra(String name)
float    getFloatExtra(String name, float defaultValue)
getIntArrayExtra(String name)
getIntExtra(String name, int defaultValue)
getIntegerArrayListExtra(String name)
getLongArrayExtra(String name)
getLongExtra(String name, long defaultValue)
getSerializableExtra(String name)
getShortArrayExtra(String name)
getShortExtra(String name, short defaultValue)
getStringArrayExtra(String name)
getStringArrayListExtra(String name)
getStringExtra(String name)