我总是得到错误:
10-03 09:55:44.517: ERROR/AndroidRuntime(819): Caused by: java.lang.ClassCastException: android.widget.EditText
在我的代码中,我没有这个词EditText,为什么会出现这种错误？
MultiAutoCompleteTextView之前是EditText.请帮忙
码:
public class AddPizza extends Activity {
private ImageView iv;
private MultiAutoCompleteTextView name;
private RatingBar rating;
private SQLiteDatabase myDB;
final String MY_DB_NAME = "PizzaCounter";
final String MY_DB_TABLE = "Pizza";
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.addpizza);
iv = (ImageView) findViewById(R.id.imageViewPizza);
name = (MultiAutoCompleteTextView) findViewById(R.id.multiAutoCompleteTextView1);
rating = (RatingBar) findViewById(R.id.ratingBar1);
Button bt = (Button) findViewById(R.id.bt_addform);
iv.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) { …读者总是null,我不明白为什么.
在使用一种方法连接之前,一切正常.
码:
private MySqlConnection connection;
private MySqlCommand command;
private MySqlDataReader Reader;
public Form1()
{
InitializeComponent();
DBint();
}
private void DBint()
{
string myConnectionString = "SERVER=xxx;PORT=3306;" +
"DATABASE=xxx;" +
"UID=root;" +
"PASSWORD=xxx;";
connection = new MySqlConnection(myConnectionString);
command = connection.CreateCommand();
MySqlDataReader Reader;//error occures her
connection.Open();
Reader = command.ExecuteReader();
//MessageBox.Show(tmp);
//connection.Close();
}
我总是得到一个Resources $ NotFoundException,但我不知道为什么.请帮忙
码:
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = new ViewHolder();
LayoutInflater li = (LayoutInflater)CustomAdapter.this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = li.inflate(R.layout.customlistitem,null);
holder.mTexttitle = (TextView) convertView.findViewById(R.id.item_title);
holder.mTextrate = (TextView) convertView.findViewById(R.id.item_rate);
convertView.setTag(holder);
}
else{
holder = (ViewHolder) convertView.getTag();
}
holder.mTexttitle.setText(pizzen.get(position).title);
holder.mTextrate.setText(pizzen.get(position).rate);
//holder.mTextdate.setText(pizzen.get(position).date.toString());
return convertView;
}
public class ViewHolder {
public TextView mTexttitle;
public TextView mTextrate;
public TextView mTextdate;
public ImageView mImageView;
}
堆栈跟踪:
09-30 10:11:07.001: ERROR/XXX List View(1032): android.widget.ListView@43d133c0
09-30 10:11:07.021: ERROR/XXX(1032): …我有一个问题是在服务中设置ServiceUpdateUIListener以更新UI.制作一个新的Service对象并在那里设置监听器并将其置于intent中是错误的.
代码源是在http://developerlife.com/tutorials/?p=356那里我找不到如何设置监听器并启动服务.
呼叫:
TimerService service = new TimerService();
TimerService.setUpdateListener(new ServiceUpdateUIListener() {
@Override
public void updateUI(String time) {
clock.setText(time);
}
});
Intent i = new Intent(Timer.this,service.class); //service cannot be resolved to a type
i.putExtra("ms", ms);
startService(i);
服务:
public class TimerService extends Service{
CountDownTimer timer;
Chronometer clock;
public static ServiceUpdateUIListener UI_UPDATE_LISTENER;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
int ms = intent.getIntExtra("ms", 0);
timer = …我想要一个分为两部分垂直的布局.我的应用程序始终处于横向模式.
请帮忙.
我用tablelayout试了一下.
<TableLayout android:id="@+id/tableLayout1"
android:stretchColumns="*" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android">
<TableRow android:id="@+id/tableRow1"
android:layout_width="fill_parent" android:layout_height="wrap_content">
</TableRow>
</TableLayout>
海兰!
我有一个listview,应该填充数据库中的数据
码:
private void onCreateDBAndDBTabled() {
myDB = this.openOrCreateDatabase(MY_DB_NAME, MODE_PRIVATE, null);
myDB.execSQL("CREATE TABLE IF NOT EXISTS " + MY_DB_TABLE
+ " (_id integer primary key autoincrement, name varchar(100), rate integer(1), eattime datetime)"
+";");
ArrayList<Pizza> list = new ArrayList<Pizza>();
Cursor cursor = this.myDB.query(MY_DB_TABLE, new String[] { "name" },null,null,null,null,null,null);
if (cursor.moveToFirst()) {
do {
Log.e("XXX", "Courser Enter: " + cursor.getString(0));
Pizza pizza = new Pizza();
pizza.title= cursor.getString(0);
list.add(pizza);
}
while (cursor.moveToNext());
}
if (cursor != null && !cursor.isClosed()) {
cursor.close();
} …我的错误如下:
'/'应用程序中的服务器错误.
未找到视图"登录"或其主控,或者没有视图引擎支持搜索的位置.搜索了以下位置:
~/Views/User/Login.aspx
~/Views/User/Login.ascx
~/Views/Shared/Login.aspx
~/Views/Shared/Login.ascx
~/Views/User/Login.cshtml
~/Views/User/Login.vbhtml
~/Views/Shared/Login.cshtml
~/Views/Shared/Login.vbhtml^
查看/登录/ Login.cshtml:
@{
ViewBag.Title = "Login";
}
@{
if (!ViewData["uname"].Equals(null) )
{
<div>
Username: @ViewData["uname"]
@Session["uname"] = @ViewData["uname"]
</div>
}
}
<h2>Login</h2>
<h4>Username:</h4>
<input type="text" name="uname" value=" " />
<button />
控制器/ Usercontroller.cs:
public class UserController : Controller
{
//
// GET: /User/
public ActionResult Index()
{
return View();
}
public ActionResult Login()
{
return View();
}
}
Global.asax.cs(仅限方法):
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"Default", // …我有食谱表:
CREATE TABLE IF NOT EXISTS `RECIPES` (
`recipes_id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
`text` varchar(2000) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
`count_persons` int(11) NOT NULL,
`duration` int(11) NOT NULL,
`user_id` int(11) NOT NULL,
`date` datetime NOT NULL,
`accepted` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`recipes_id`),
KEY `recipes_user_fk` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=44 ;
插入:
(20, 'Hundefutter', 'Dose öffnen', 4, 10, 1, '2011-12-31 23:59:5', 0)
使用php我将其解析为json(getByID):
<?php
header('Content-Type: text/html; …