ANDROID APP

private TextView tv;
private int meaningOfLife = 42;
private String userName = "Douglas Adams";
มัลติเพิลแอคทิวิตี้ (Multiple Activities)
47
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tv = (TextView) findViewById(R.id.startscreen_text);
//display initial values
tv.setText(userName + ":" + meaningOfLife);
}
//setup button listener
Button startButton = (Button) findViewById(R.id.play_game);
startButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
startGame();
}
});
@Override
protected void onActivityResult(int requestCode,
int resultCode, Intent data) {
if (requestCode == PLAY_GAME && resultCode == RESULT_OK) {
meaningOfLife = data.getExtras().getInt("returnInt");
userName = data.getExtras().getString("userName");
//show it has changed
tv.setText(userName + ":" + meaningOfLife);
}
super.onActivityResult(requestCode, resultCode, data);
}
private void startGame() {
Intent launchGame = new Intent(this, PlayGame.class);
//passing information to launched activity
launchGame.putExtra("meaningOfLife", meaningOfLife);
launchGame.putExtra("userName", userName);
}
}
startActivityForResult(launchGame, PLAY_GAME);