这是我的MainActivity.java
public class MainActivity extends Activity implements OnClickListener{
ArrayList<Product> products = new ArrayList<Product>();
final Context context = this;
ListAdapter boxAdapter;
String[] dataArray;
EditText editText;
//name that get back through the dialog
private String getName;
private String selectedItem;
private ArrayAdapter<String> adapter; // The list adapter
/** Called when the activity is first created. */
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
fillData();
boxAdapter = new ListAdapter(this, products);
ListView lvMain = (ListView) findViewById(R.id.lvMain);
lvMain.setAdapter(boxAdapter);
Button btn = (Button) findViewById(R.id.AddItem);
//the add item button function
btn.setOnClickListener(new OnClickListener(){
public void onClick(View arg0) {
//get the dialog view
LayoutInflater li = LayoutInflater.from(context);
View promptsView = li.inflate(R.layout.dialog, null);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
context);
// set prompts.xml to alertdialog builder
alertDialogBuilder.setView(promptsView);
final EditText userInput = (EditText) promptsView
.findViewById(R.id.insert);
// set dialog message
alertDialogBuilder
.setCancelable(false)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
// get user input and set it to result
// edit text
getName=userInput.getText().toString();
products.add(new Product(getName,false));
}
})
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
});
// Create the listener for normal item clicks
OnItemClickListener itemListener = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long rowid) {
Toast.makeText(
getApplicationContext(),
"You have clicked on " + parent.getItemAtPosition(position).toString() + ".",
Toast.LENGTH_SHORT).show();
}
};
//the long press to delete function
OnItemLongClickListener itemLongListener = new OnItemLongClickListener()
{
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long id) {
// Store selected item in global variable
selectedItem = parent.getItemAtPosition(position).toString();
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setMessage("Do you want to remove " + selectedItem + "?");
builder.setCancelable(false);
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
products.remove(selectedItem);
boxAdapter.notifyDataSetChanged();
Toast.makeText(
getApplicationContext(),
selectedItem + " has been removed.",
Toast.LENGTH_SHORT).show();
}
});
builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Create and show the dialog
builder.show();
// Signal OK to avoid further processing of the long click
return true;
}
};
lvMain.setOnItemClickListener(itemListener);
lvMain.setOnItemLongClickListener(itemLongListener);
}
void fillData() {
dataArray = getResources().getStringArray(R.array.ChecklistData);
for(String productName : dataArray)
{
products.add(new Product(productName,false));
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
这是ListAdapter.java
public class ListAdapter extends BaseAdapter {
Context ctx;
LayoutInflater lInflater;
ArrayList<Product> objects;
ListAdapter(Context context, ArrayList<Product> products) {
ctx = context;
objects = products;
lInflater = (LayoutInflater) ctx
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return objects.size();
}
@Override
public Object getItem(int position) {
return objects.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
view = lInflater.inflate(R.layout.item, parent, false);
}
Product p = getProduct(position);
((TextView) view.findViewById(R.id.tvDescr)).setText(p.name);
/*((TextView) view.findViewById(R.id.tvPrice)).setText(p.price + "");
((ImageView) view.findViewById(R.id.ivImage)).setImageResource(p.image);*/
CheckBox cbBuy = (CheckBox) view.findViewById(R.id.cbBox);
cbBuy.setOnCheckedChangeListener(myCheckChangList);
cbBuy.setTag(position);
cbBuy.setChecked(p.box);
return view;
}
Product getProduct(int position) {
return ((Product) getItem(position));
}
ArrayList<Product> getBox() {
ArrayList<Product> box = new ArrayList<Product>();
for (Product p : objects) {
if (p.box)
box.add(p);
}
return box;
}
OnCheckedChangeListener myCheckChangList = new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
getProduct((Integer) buttonView.getTag()).box = isChecked;
}
};
}
OnItemClickListener和OnItemLongClickListener根本不起作用。任何人都帮助我在这里..我确实诊断出了问题，但它仍然没有功能
答案 0 :(得分：1)
OnItemClickListener itemListener = new OnItemClickListener() {
OnItemLongClickListener itemLongListener = new OnItemLongClickListener() {
您只需定义这些变量，但不要将它们分配给ListView。 你应该在某处调用这些行：
lvMain.setOnItemClickListener(itemListener);
lvMain.setOnItemLongClickListener(itemLongListener);
<强>更新
您也会错过注册上下文菜单列表。
registerForContextMenu(lvMain);
答案 1 :(得分：0)
您需要注册听众。在onCreate()方法的末尾添加以下行。
lvMain.setOnItemClickListener(itemListener);
lvMain.setOnItemLongClickListener(itemLongListener);
答案 2 :(得分：0)
对已实现的方法中的推送事件做出反应，如：
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button:
this.doSomething();
}
}
和
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
//react to the view or react to the position
switch (view.getId()) {
case R.id.button:
this.doSomething();
}
return true;
}
答案 3 :(得分：0)
我遇到了完全相同的问题。在布局中启用onclick或onlongclick时; onitemclickListener不会工作。只需从您的Layout XML资源中删除标签android：clickable和android：longclickable，它们都可以正常工作。