需要在activity之間傳遞數(shù)據(jù)，遇到一些困難。代碼：private TextView createNewTextView (String text){
final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
final TextView newTextView = new TextView(this);
ArrayList<String> players = new ArrayList<String>();
Intent zacniIgro = getIntent();
newTextView.setLayoutParams(lparams);
newTextView.setText(text);
players.add(text);
zacniIgro.putStringArrayListExtra("players", players);
return newTextView;
}
public void zacniIgro (View v){
Intent zacniIgro = new Intent (getApplicationContext(), Igra.class);
startActivity(zacniIgro);
}在新的activity中如何得到數(shù)據(jù)？我試過(guò)：ArrayList<String> players = data.getStringArrayListExtra("players");檢索列表:@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_igra);
ArrayList<String> players = data.getStringArrayListExtra("players");
}給data加了紅下劃線。不知道是什么錯(cuò)誤。
2 回答
慕少森
TA貢獻(xiàn)2019條經(jīng)驗(yàn) 獲得超9個(gè)贊
因?yàn)槟忝看伍_(kāi)始activity都創(chuàng)建了一個(gè)intent。
ArrayList<String> players = new ArrayList<String>(); //declare it outside of the function
private TextView createNewTextView (String text){
final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
final TextView newTextView = new TextView(this);
newTextView.setLayoutParams(lparams);
newTextView.setText(text);
players.add(text);
return newTextView;
}
public void zacniIgro (View v){
Intent zacniIgro = new Intent (getApplicationContext(), Igra.class);
zacniIgro.putStringArrayListExtra("players", players);
startActivity(zacniIgro);
}在另一個(gè)activity中:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_igra);
Intent data = getIntent();
ArrayList<String> players = data.getStringArrayListExtra("players");
}
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