[英]How can I get selected items on listdialog's click event?
我正在实现listdialog。 当我单击特定列表项时,我想打印一条祝酒消息。 我想在烤面包上打印消息,否则我想执行一些操作。 我的代码是这样的:
ListView lv;
DbHelper dbh;
final String ar[]={"Delete","Update"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_all);
lv = (ListView) findViewById(R.id.listView);
dbh = new DbHelper(ViewAllActivity.this);
ArrayList<DoctorPojo> arraylist = dbh.getData();
ArrayAdapter<DoctorPojo> adapter=new ArrayAdapter<DoctorPojo>(ViewAllActivity.this,android.R.layout.simple_list_item_1,arraylist);
lv.setAdapter(adapter);
lv.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener()
{
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id)
{
final AlertDialog.Builder alert=new AlertDialog.Builder(ViewAllActivity.this);
alert.setTitle("Which Action You Want to Perform...!!!");
alert.setItems(ar, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if(ar[0] == alert.) {
Toast.makeText(ViewAllActivity.this, " Delete is pressed", Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(ViewAllActivity.this, " Update is pressed", Toast.LENGTH_LONG).show();
}
}
});
alert.create().show();
return false;
}
});
}
}
请帮忙; 我对if条件感到困惑。
如果我正确理解了您的问题,则需要实现ListView的setOnItemClickListener(AdapterView.OnItemClickListener监听器) 。 setOnItemLongClickListener用于按住列表项。
对于ListView的setOnItemClickListener()实现,可以执行以下操作:
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
//YOUR ACTION HERE
//or show a toast instead:
Toast.makeText(ViewAllActivity.this, "Your message here", Toast.LENGTH_LONG).show();
}
});
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