Java 为Android保存setOnItemClickListener数据
我创建了一个listview，允许用户在列表中勾选他们看过的电影。唯一的问题是，当我更改活动或关闭应用程序时，它会将listview中的所有元素重置为默认值。我想知道是否有办法使用我当前的代码保存这些更改Java 为Android保存setOnItemClickListener数据,java,android,listview,Java,Android,Listview,我创建了一个listview，允许用户在列表中勾选他们看过的电影。唯一的问题是，当我更改活动或关闭应用程序时，它会将listview中的所有元素重置为默认值。我想知道是否有办法使用我当前的代码保存这些更改 public class Movies extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceSta
public class Movies extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_movies);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
ListView moviesListView = (ListView)findViewById(R.id.moviesListView);
final ArrayList<String> topMovies = new ArrayList<String>(asList("The Shawshank Redemption", "The Godfather", "The Godfather: Part 2",
"The Dark Knight", "Pulp Fiction","Schlinder's List","12 Angry Men","The Lord of the Rings: The Return of the King",
"The Good, the Bad and the Ugly","Fight Club","The Lord of the Rings: The Fellowship of the Ring","Star Wars: Episode V - The Empire Strikes Back",
"Forrest Gump","Inception","One Flew Over the Cuckoo's Nest","The Lord of the Rings: The Two Towers","Goodfellas",
"The Matrix","Seven Samurai","Star Wars: Episode IV - A New Hope","City of God","Se7en","The Silence of the Lambs",
"The Usual Suspects","It's a Wonderful Life","Life is Beautiful","Leon: The Professional","Once Upon a Time in the West",
"Spirited Away","Interstellar","Saving Private Ryan","Casablanca","American History X","Psycho","City Lights","Raiders of the Lost Ark",
"Rear Window","The Intouchables","Modern Times","The Green Mile","Terminator 2: Judgement Day","The Pianist","The Departed",
"Whiplash","Back to the Future","Memento","Gladiator","Apocolypse Now","Dr. Strangelove","The Prestige"));
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, topMovies);
moviesListView.setAdapter(arrayAdapter);
final MediaPlayer mPlayer = MediaPlayer.create(this,R.raw.pindrop);
moviesListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if(view.getAlpha()==1f) {
mPlayer.start();
Toast.makeText(getApplicationContext(), "You Watched " + topMovies.get(position), Toast.LENGTH_LONG).show();
view.animate().alpha(0.2f);
}
else{
view.animate().alpha(1f);
}
}
});
}
}
公共类电影扩展了AppCompative活动{
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_电影）；
Toolbar Toolbar=（Toolbar）findViewById（R.id.Toolbar）；
设置支持操作栏（工具栏）；
ListView moviesListView=（ListView）findViewById（R.id.moviesListView）；
最终ArrayList topMovies=新ArrayList（asList（“肖申克的救赎”、“教父”、“教父：第2部分”），
“黑暗骑士”、“低俗小说”、“施林德名单”、“12个愤怒的男人”、“指环王：国王的回归”，
“善、恶、丑”、“搏击俱乐部”、“指环王：指环团契”、“星球大战：第五集-帝国反击”，
《阿甘正传》，《盗梦空间》，《飞越布谷鸟巢》，《指环王：双塔》，《好家伙》，
《黑客帝国》，《七武士》，《星球大战：第四集-新希望》，《上帝之城》，《Se7en》，《沉默的羔羊》，
“通常的怀疑”，“这是一个美好的生活”，“生活是美好的”，“利昂：专业人士”，“曾经在西方”，
“幽灵之旅”、“星际”、“拯救大兵瑞恩”、“卡萨布兰卡”、“美国历史X”、“精神病”、“城市之光”、“迷失方舟掠夺者”，
《后窗》，《不可触摸的人》，《现代》，《绿英里》，《终结者2：审判日》，《钢琴家》，《逝者》，
“鞭笞”、“回到未来”、“纪念品”、“角斗士”、“现在的Apocolypse”、“奇爱博士”、“威望”）；
ArrayAdapter ArrayAdapter=新的ArrayAdapter（这是android.R.layout.simple\u list\u item\u 1，topMovies）；
setAdapter（arrayAdapter）；
final MediaPlayer=MediaPlayer.create（this，R.raw.pindrop）；
moviesListView.setOnItemClickListener（新的AdapterView.OnItemClickListener（）{
@凌驾
public void onItemClick（AdapterView父对象、视图、整型位置、长id）{
if（view.getAlpha（）==1f）{
mPlayer.start（）；
Toast.makeText（getApplicationContext（），“您观看了”+topMovies.get（position），Toast.LENGTH_LONG.show（）；
view.animate（）.alpha（0.2f）；
}
否则{
view.animate（）.alpha（1f）；
}
}
});
}
}