在过去的几天里，我尝试在表格的某些单元格中插入一些微调器，其中顶部和左侧的标题都是固定的，只有其他单元格可以作为一个单元滚动。为了实现这一点，我找到InQBarna/TableFixHeaders并更改了SampleTableAdapter.java以在某些单元格中显示微调器（不在标题内）。
为了处理微调器的选择，我像往常一样为每个微调器添加一个OnItemSelectedListener，代码如下：
final Spinner aufgabe = (Spinner) view.findViewById(android.R.id.custom);
ArrayAdapter<CharSequence> adapter = new ArrayAdapter(getContext(), android.R.layout.simple_spinner_item, ArbeitAnzeigen.allePunkte.get(column - 2));
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
aufgabe.setAdapter(adapter);
aufgabe.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView parent, View view, int position, long id) {
Log.d(TAG,"onItemSelected()");
}
@Override
public void onNothingSelected(AdapterView parent) {
Log.d(TAG,"onNothingSelected()");
}
});
但是所有的OnItemSelectedListener都不起作用。一旦创建了视图，就会调用它们，但是当选择一个项目（不仅是预先选择的）时，没有反应。
以下是我的应用程序上下文的一些信息：带有微调器的表放在一个片段中。此片段是tabhost的另一个片段的一部分。我的应用程序有一个导航抽屉来选择想要的片段。主要活动属于ActionBarActivity类型。
我检查了上面代码的许多变体，但我找不到解决方案。有人可以帮助我吗？我会很高兴有一个提示，我可以搜索并尝试。
是否有可能另一位听众正在接收该事件？如果可以的话，我该如何找出哪一个？
以下是整个代码：
MainActivity.java
public class MainActivity extends Activity {
public static String[] tabellenueberschrift;
public static String[][] tabellenzeilen;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView ueberschrift = (TextView) findViewById(R.id.ueberschrift);
ueberschrift.setText("Beispieltabelle");
tabellenueberschrift = new String[6];
for (int i = 0; i < 6; i++) {
tabellenueberschrift[i] = "Header " + Integer.toString(i);
}
tabellenzeilen = new String[3][6];
for (int i = 0; i < 3; i++) {
tabellenzeilen[i][0] = "Zeile " + Integer.toString(i);
for (int j = 1; j < 6; j++) {
tabellenzeilen[i][j] = "3";
}
}
TableFixHeaders tableFixHeaders = (TableFixHeaders) findViewById(R.id.table);
tableFixHeaders.setAdapter(new TableTestAdapter(this));
}
TableTestAdapter.java：
public class TableTestAdapter extends SampleTableAdapter {
private static final String TAG = TableTestAdapter.class.getSimpleName();
private final static int WIDTH_DIP = 110;
private final static int HEIGHT_DIP = 48;
private final int width;
private final int height;
public TableTestAdapter(Context context) {
super(context);
Resources resources = context.getResources();
width = Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, WIDTH_DIP, resources.getDisplayMetrics()));
height = Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, HEIGHT_DIP, resources.getDisplayMetrics()));
}
@Override
public int getRowCount() {
return 3;
}
@Override
public int getColumnCount() {
return 5;
}
@Override
public int getWidth(int column) {
return width;
}
@Override
public int getHeight(int row) {
return height;
}
@Override
public String getCellString(int row, int column) {
if (row == -1) {
return MainActivity.tabellenueberschrift[column + 1];
}
else {
return MainActivity.tabellenzeilen[row][column + 1];
}
}
@Override
public int getLayoutResource(int row, int column) {
final int layoutResource;
switch (getItemViewType(row, column)) {
case 0:
layoutResource = R.layout.tabelle_header;
break;
case 1:
layoutResource = R.layout.tabelle;
break;
case 2:
layoutResource = R.layout.tabelle_spinner;
break;
default:
throw new RuntimeException("wtf?");
}
return layoutResource;
}
@Override
public int getItemViewType(int row, int column) {
if (row < 0) {
return 0;
} else {
if (column >= 0) {
return 2;
}
else {
return 1;
}
}
}
@Override
public int getViewTypeCount() {
return 3;
}
SampleTableAdapter.java：
public abstract class SampleTableAdapter extends BaseTableAdapter {
private static final String TAG = SampleTableAdapter.class.getSimpleName();
private final Context context;
private final LayoutInflater inflater;
/**
* Constructor
*
* @param context
* The current context.
*/
public SampleTableAdapter(Context context) {
this.context = context;
inflater = LayoutInflater.from(context);
}
/**
* Returns the context associated with this array adapter. The context is
* used to create views from the resource passed to the constructor.
*
* @return The Context associated with this adapter.
*/
public Context getContext() {
return context;
}
/**
* Quick access to the LayoutInflater instance that this Adapter retreived
* from its Context.
*
* @return The shared LayoutInflater.
*/
public LayoutInflater getInflater() {
return inflater;
}
@Override
public View getView(int row, int column, View converView, ViewGroup parent) {
if (converView == null) {
converView = inflater.inflate(getLayoutResource(row, column), parent, false);
}
if (getItemViewType(row, column) == 2) {
final Spinner spinner = (Spinner) converView.findViewById(android.R.id.custom);
ArrayAdapter<CharSequence> adapter = new ArrayAdapter(getContext(), android.R.layout.simple_spinner_item, getItems(Integer.valueOf(MainActivity.tabellenzeilen[row][column + 1])));
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView parent, View view, int position, long id) {
Log.d(TAG, "onItemSelected()");
}
@Override
public void onNothingSelected(AdapterView parent) {
Log.d(TAG, "onNothingSelected()");
}
});
}
else {
setText(converView, getCellString(row, column));
}
return converView;
}
/**
* Sets the text to the view.
*
* @param view
* @param text
*/
private void setText(View view, String text) {
((TextView) view.findViewById(android.R.id.text1)).setText(text);
}
/**
* @param row
* the title of the row of this header. If the column is -1
* returns the title of the row header.
* @param column
* the title of the column of this header. If the column is -1
* returns the title of the column header.
* @return the string for the cell [row, column]
*/
public abstract String getCellString(int row, int column);
public abstract int getLayoutResource(int row, int column);
private ArrayList<String> getItems(int anzahl) {
ArrayList<String> rueckgabe = new ArrayList<String>();
for (int i = 0; i < anzahl; i++) {
rueckgabe.add("Auswahl " + Integer.toString(i+1));
}
return rueckgabe;
}
答案 0 :(得分：0)
你不应该覆盖getView。相反，您应该在onResume中运行您的代码，以确保每次活动到达时都能正确初始化侦听器。