listview项目longpress打开contextmenu并执行3选项视图，编辑，删除。查看是单击而不是获取列表视图中所选项目的ID，并通过下一个活动...
我展示你的代码......
Broker_Management.java 跟随代码意图通过下一个活动而不是传递putExtra值（选择的longpress项目ID），下一个活动是打开的（Broker_Details_View.java）而不是{ {1}}获取id值以将数据提取到sqlite中。
getExtraBroker_Details_View.java
public class Broker_Management extends ListActivity implements OnClickListener {
ListAdapter adapter;
DBUtil db;
Button btn_add_broker, btn_back;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.broker_management);
//CREATE A DATABASE
db = new DBUtil(Broker_Management.this);
broker_list_display();
btn_add_broker = (Button) findViewById(R.id.btn_add_broker);
btn_back = (Button) findViewById(R.id.btn_back);
btn_add_broker.setOnClickListener(this);
btn_back.setOnClickListener(this);
}
public void onClick(View arg0) {
switch (arg0.getId()) {
case R.id.btn_add_broker:
startActivity(new Intent(Broker_Management.this, Add_New_Broker.class));
break;
case R.id.btn_back:
Intent goback = new Intent(Broker_Management.this, Admin_Home.class);
startActivity(goback);
break;
}
}
public void broker_list_display() {
Cursor c;
db.open();
String[] from = new String[]{"broker_name", "city"};
int[] to = new int[]{R.id.broker_name, R.id.broker_city};
c = db.get_broker_list();
//String[] columns = new String[]{c.getColumnName(1),c.getColumnName(2)};
adapter = new SimpleCursorAdapter(Broker_Management.this, R.layout.itemlist, c, from, to);
setListAdapter(adapter);
db.close();
registerForContextMenu(getListView());
}
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("Context Menu");
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.broker_context_menu, menu);
}
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
Cursor cursor;
switch (item.getItemId()) {
case R.id.view:
Toast.makeText(this, "View is Peform", Toast.LENGTH_SHORT).show();
Intent intentview = new Intent(Broker_Management.this, Broker_Details_View.class);
cursor = (Cursor) adapter.getItem(info.position);
intentview.putExtra("KEY_1", cursor.getInt(cursor.getColumnIndex("_id")));
startActivity(intentview);
return true;
case R.id.update:
Toast.makeText(this, "Update is Perform", Toast.LENGTH_SHORT).show();
Intent intentupdate = new Intent(Broker_Management.this, Broker_Details_Update.class);
cursor = (Cursor) adapter.getItem(info.position);
intentupdate.putExtra("KEY_1", cursor.getInt(cursor.getColumnIndex("_id")));
startActivity(intentupdate);
return true;
case R.id.delete:
Toast.makeText(this, "Delete Activity Perform", Toast.LENGTH_SHORT).show();
Intent intentdelete = new Intent(Broker_Management.this, Broker_Details_Update.class);
cursor = (Cursor) adapter.getItem(info.position);
intentdelete.putExtra("KEY_1", cursor.getInt(cursor.getColumnIndex("_id")));
startActivity(intentdelete);
return true;
default:
return super.onContextItemSelected(item);
}
}
}
DBUtil.java
public class Broker_Details_View extends Activity {
int id;
DBUtil db;
TextView tv_broker_name, tv_city, tv_contact_no, tv_email_id, tv_broker_login_id, tv_joining_date;
Button btn_update, btn_delete, btn_close, btn_menu, btn_back;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.broker_details_view);
/*
id=getIntent().getIntExtra("KEY_1", 0);
db=new DBUtil(Broker_Details_View.this);
tv_broker_name = (TextView) findViewById(R.id.tv_broker_name);
tv_city = (TextView) findViewById(R.id.tv_city);
tv_contact_no = (TextView) findViewById(R.id.tv_contact_no);
tv_email_id = (TextView) findViewById(R.id.tv_email_id);
tv_joining_date = (TextView) findViewById(R.id.tv_joining_id);
db.open();
Cursor c = db.get_broker_details(id);
if(c.getCount() == 1){
c.moveToFirst();
tv_broker_name.setText(c.getString(c.getColumnIndex("broker_name")));
tv_city.setText(c.getString(c.getColumnIndex("city")));
tv_contact_no.setText(c.getString(c.getColumnIndex("contact_no")));
tv_email_id.setText(c.getString(c.getColumnIndex("email_id")));
tv_broker_login_id.setText(c.getString(c.getColumnIndex("join_date")));
}
db.close(); */
}
}
请解决此问题如何获取所选listView项目中的ID以打开package com.me.DBUtil;
import android.app.Activity;
import android.database.Cursor;
public class DBUtil extends Activity {
private static final String DATABASE_NAME = "EMS";
private static final int DATABASE_VERSION = 1;
//BROKER table content
private static final String DBTABLE_BROKER = "Broker";
private static final String B_BROKER_ID = "_id";
private static final String B_LOGIN_ID = "login_id";
private static final String B_BROKER_NAME = "broker_name";
private static final String B_ADDRESS = "address";
private static final String B_CITY = "city";
private static final String B_CONTACT_NO = "contact_no";
private static final String B_EMAIL_ID = "email_id";
private static final String B_DOB = "dob";
private static final String B_AVTAR = "avtar";
private static final String B_JOIN_DATE = "join_date";
public Cursor get_broker_list() {
String[] columns = new String[]{B_BROKER_ID, B_BROKER_NAME, B_CITY};
Cursor c = ourDatabase.query(DBTABLE_BROKER, columns, null, null, null, null, null);
return c;
}
public Cursor get_broker_details(int id) {
String[] columns = new String[]{B_BROKER_ID, B_BROKER_NAME, B_CITY, B_CONTACT_NO, B_EMAIL_ID, B_JOIN_DATE};
String con = "" + B_BROKER_ID + "=" + id;
Cursor c = ourDatabase.query(DBTABLE_BROKER, columns, con, null, null, null, null);
return c;
}
}
并通过下一个活动进行意图？
答案 0 :(得分：0)
为列表设置onItemClickListener。
getListView().setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long arg3) {
// TODO Auto-generated method stub
//open the context menu for the position
//to pass to the intent, retrive the value for the position from the cursor and pass it to the intent.
}
});