当片段改变时，autocompletetextviewarraylist更新不工作

Question

首先，我的英语水平不高。

我使用android.support.v4.view。ViewPager和fragment.

当我滑动片段页时，想要更新AutoCompleteTextView适配器。

试1. onPageSelected(int position)

中(clear, set, notify…)的组合

aList.clear();  
autoSearchAdapter.clear();  
autoTextView.setAdapter(autoSearchAdapter);  
autoSearchAdapter.notifyDataSetChanged();  

在onPageSelected(int position)

中使用处理器

提示。有时AutoCompleteTextView arrayList工作。(50%)，它是在AutoCompleteTextView写句子后工作，滑动页面。这时数组列表展开了。

部分代码
类MainActivity扩展ActionBarActivity {

static String uName;
TestAdapter demoPagerAdapter;
ViewPager mViewPager;
static AutoCompleteTextView autoTextView;
static ArrayAdapter<String> autoSearchAdapter;
public static ArrayList<String> aList;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //hide actionbar
    getSupportActionBar().hide();
    setContentView(R.layout.activity_main);
    // fragments, so use getSupportFragmentManager.
    demoPagerAdapter = new TestAdapter(getSupportFragmentManager());
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(demoPagerAdapter);
    getAccountInfo();
    SetAutoSearchAdapter();
    KeyBoardHide();
}
private void SetAutoSearchAdapter(){
    //AutoCompleteTextView setting
    autoTextView = (AutoCompleteTextView) findViewById(R.id.autocomplete_textview);
    aList=new ArrayList<String>();
    autoSearchAdapter =
            new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line, aList);
    autosearchInit();
    autoTextView.setAdapter(autoSearchAdapter);
    //updating autosearch adapter
    mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        }
        @Override
        public void onPageSelected(int position) {
            if (position == 0) {
                aList.clear();
                Toast.makeText(getApplicationContext(), "fragment 0", Toast.LENGTH_LONG).show();
                //autosearchInit();
                aList.add("aaaaaa00");
                aList.add("bbbbb00");
                aList.add("ccccc00");
                autoSearchAdapter.notifyDataSetChanged();
            } else if (position == 1) {
                Toast.makeText(getApplicationContext(), "fragment 1.", Toast.LENGTH_LONG).show();
                aList.clear();
                aList.add("aaaaaa11");
                aList.add("bbbbb11");
                aList.add("ccccc11");
                autoSearchAdapter.notifyDataSetChanged();
            } else if (position == 2) {
                Toast.makeText(getApplicationContext(), "fragment 2", Toast.LENGTH_LONG).show();
                aList.clear();
                autoSearchAdapter.clear();
                autoTextView.setAdapter(autoSearchAdapter);
                aList.add("aaaaa22");
                aList.add("bbbbb22");
                aList.add("ccccc22");
                autoSearchAdapter.notifyDataSetChanged();
            }
        }
        @Override
        public void onPageScrollStateChanged(int state) {
        }
    });
}

Answer 1

在autoSearchAdapter你必须创建一个方法来设置数组列表，

private ArrayList<Test> test;
Public void setAryList(ArrayList<Test> test){
this.test = test;
}

之后你必须调用

autoSearchAdapter.setAryList(aList);  
autoSearchAdapter.notifyDataSetChanged();  

很有魅力