android– 自定义ArrayAdapter getView没有被调用 – 为什么不呢？

概述我在另一个Activity类中使用了相同的模式,它完美地运行.但是在这个类(也是一个Activity)中,从不调用getView.我通过记录fbFriendMatchAdapter.getCount()确认适配器中有9个项目.我已经尝试将数据源更改为String[]变量,但这对getView的(缺少)没有影响.我很感激任何建议！我已经彻底

我在另一个Activity类中使用了相同的模式,它完美地运行.但是在这个类(也是一个Activity)中,从不调用getVIEw.我通过记录fbFrIEndMatchAdapter.getCount()确认适配器中有9个项目.我已经尝试将数据源更改为String []变量,但这对getVIEw的(缺少)没有影响.

我很感激任何建议！我已经彻底研究过了.这个问题有很多种,但都没有解决我的问题.这就是我发布新问题的原因.

//Here is the ArrayList data source deFinition.//It is loaded using a for loop with 9 values.private List<String> fbFrIEndMatchAdapter=new ArrayList<String>();// Here is the Custom Array AdapterArrayAdapter<String> fbFrIEndMatchAdapter = new ArrayAdapter<String>(this,        R.layout.row_left, R.ID.ListVIEwname, fbFrIEndPotentialMatchArrayList) {     @OverrIDe    public VIEw getVIEw(final int dialogposition, VIEw convertVIEw, VIEwGroup ListParent) {        LayoutInflater inflater = getLayoutInflater();        VIEw fbFrIEndMatchDialogVIEwRow = inflater.inflate(R.layout.row_left, ListParent, false);         Log.d(BBTAG, String.format("BBSetup getVIEw[%s] name=%s", dialogposition, buddydisplayname ));        return fbFrIEndMatchDialogVIEwRow;    }  // [END getVIEw]    @OverrIDe    public String getItem(int position) {        return fbFrIEndPotentialMatchArrayList.get(position);    }};//Here is the dialog that includes the ArrayAdapter:AlertDialog fbFrIEndsMatchDialog = new AlertDialog.Builder(new ContextthemeWrapper(context, R.style.PetesspinnerReplacement))        .setTitle("Select Correct Facebook FrIEnd")  //FYI overrIDden by custom Title        .setAdapter(fbFrIEndMatchAdapter, new DialogInterface.OnClickListener() {            @OverrIDe            public voID onClick(DialogInterface dialog, int selectedFBFrIEnd) {                buddyFBUIDs[buddyNumber] = fbFrIEndUIDsList.get(selectedFBFrIEnd);              }        })        .setMessage("No matches found")        .setCancelable(true)        .setPositivebutton("Set as Facebook FrIEnd", new DialogInterface.OnClickListener() {             @OverrIDe             public voID onClick(DialogInterface dialog, int iFrIEnd) {                 dialog.dismiss();             }         })        .setNegativebutton("FrIEnd Not Listed", new DialogInterface.OnClickListener() {            @OverrIDe            public voID onClick(DialogInterface dialog, int ID) {                dialog.dismiss();                buddyFBUIDs[buddyNumber] = "n/a";  //record lack of FB uID            }         })          .create();  //build dialogfbFrIEndsMatchDialog.show();  // Now show dialog 

解决方法:

我建议不要试图为此内联一个ArrayAdapter子类,因为我相信ArrayAdapter对你的布局和数据结构做了一些假设,可能会让你失望.编写自己的自定义适配器非常简单,我几乎建议不要使用ArrayAdapter(除了最简单的用例).只需子类化BaseAdapter和四个必需的方法,然后使用它.像这样的东西：

private class MatchAdapter extends BaseAdapter {    private List<String> mItems;    private LayoutInflater mInflater;    public MatchAdapter (Context c, List<String> items) {        mItems = items;        //Cache a reference to avoID looking it up on every getVIEw() call        mInflater = LayoutInflater.from(c);     }    @OverrIDe    public int getCount () {        return mItems.size();    }    @OverrIDe    public long getItemID (int position) {        return position;    }    @OverrIDe    public Object getItem (int position) {        return mItems.get(position);    }    @OverrIDe    public VIEw getVIEw (int position, VIEw convertVIEw, VIEwGroup parent) {        //If there's no recycled vIEw, inflate one and tag each of the vIEws        //you'll want to modify later        if (convertVIEw == null) {            convertVIEw = mInflater.inflate (R.layout.row_left, parent, false);            //This assumes layout/row_left.xml includes a TextVIEw with an ID of "textvIEw"            convertVIEw.setTag (R.ID.textvIEw, convertVIEw.findVIEwByID(R.ID.textvIEw));        }        //RetrIEve the tagged vIEw, get the item for that position, and        //update the text        TextVIEw textVIEw = (TextVIEw) convertVIEw.getTag(R.ID.textvIEw);        String textItem = (String) getItem(position);        textVIEw.setText(textItem);        return convertVIEw;    }}

总结

以上是内存溢出为你收集整理的android – 自定义ArrayAdapter getView没有被调用 – 为什么不呢？全部内容，希望文章能够帮你解决android – 自定义ArrayAdapter getView没有被调用 – 为什么不呢？所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。