我有以下 XML 文件，显示标签不匹配错误。非常感谢任何建议!
(我正在尝试查看来自 TimePicker 的数据)
AddEditCountry java
import android.app.Activity;
import android.app.AlertDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.ViewGroup;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.TimePicker;
public class AddEditCountry extends Activity {
private long rowID;
private EditText nameEt;
private EditText capEt;
private EditText codeEt;
private TimePicker timeEt;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.add_country);
nameEt = (EditText) findViewById(R.id.nameEdit);
capEt = (EditText) findViewById(R.id.capEdit);
codeEt = (EditText) findViewById(R.id.codeEdit);
timeEt = (TimePicker) findViewById(R.id.timeEdit);
Bundle extras = getIntent().getExtras();
if (extras != null)
{
rowID = extras.getLong("row_id");
nameEt.setText(extras.getString("name"));
capEt.setText(extras.getString("cap"));
codeEt.setText(extras.getString("code"));
timeEt.setCurrentHour(extras.getInt("time"));
}
Button saveButton =(Button) findViewById(R.id.saveBtn);
saveButton.setOnClickListener(new OnClickListener() {
public void onClick(View v)
{
if (nameEt.getText().length() != 0)
{
AsyncTask<Object, Object, Object> saveContactTask =
new AsyncTask<Object, Object, Object>()
{
@Override
protected Object doInBackground(Object... params)
{
saveContact();
return null;
}
@Override
protected void onPostExecute(Object result)
{
finish();
}
};
saveContactTask.execute((Object[]) null);
}
else
{
AlertDialog.Builder alert = new AlertDialog.Builder(AddEditCountry.this);
alert.setTitle(R.string.errorTitle);
alert.setMessage(R.string.errorMessage);
alert.setPositiveButton(R.string.errorButton, null);
alert.show();
}
}
});
}
private void saveContact()
{
DatabaseConnector dbConnector = new DatabaseConnector(this);
if (getIntent().getExtras() == null)
{
dbConnector.insertContact(nameEt.getText().toString(),
capEt.getText().toString(),
timeEt.getCurrentHour().toString(),
codeEt.getText().toString());
}
else
{
dbConnector.updateContact(rowID,
nameEt.getText().toString(),
capEt.getText().toString(),
timeEt.getCurrentHour().toString(),
codeEt.getText().toString());
}
}
}
add_country xml(导致崩溃的TimePicker数据首先进入系统)
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:layout_weight="1">
<LinearLayout android:id="@+id/linearLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<EditText android:id="@+id/nameEdit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:imeOptions="actionNext"
android:hint="@string/name_hint"
android:inputType="textPersonName|textCapWords"/>
<EditText android:id="@+id/capEdit"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:imeOptions="actionNext"
android:hint="@string/cap_hint"
android:inputType="textPersonName|textCapWords"/>
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Data Limit"
android:textColor="#ffffff"
android:textAppearance="?android:textAppearanceMedium" />
<SeekBar
android:id="@+id/seekBar1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="left"
android:textColor="#ffffff"
android:text="10MB" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="right"
android:textColor="#ffffff"
android:text="Unlimited Data" />
</LinearLayout>
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Bandwidth Limit"
android:textColor="#ffffff"
android:textAppearance="?android:textAppearanceMedium" />
<SeekBar
android:id="@+id/seekBar1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:gravity="left"
android:textColor="#ffffff"
android:text="10kbs" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:textColor="#ffffff"
android:gravity="right"
android:text="Unlimited Bandwidth" />
</LinearLayout>
<TextView
android:id="@+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:textAppearanceSmall" />
<TextView
android:id="@+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="WiFi Time Limit"
android:textColor="#ffffff"
android:textAppearance="?android:textAppearanceMedium" />
<TimePicker
android:id="@+id/timeEdit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:layout_weight="1.0" />
<EditText
android:id="@+id/codeEdit"
android:inputType="textUri"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ems="10"
android:lines="1"
android:hint="@string/code_hint"
android:imeOptions="actionNext" />
<Button android:id="@+id/saveBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:layout_gravity="center_horizontal"
android:text="@string/save_btn"/>
</LinearLayout>
</ScrollView>
查看国家/地区 xml
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="1"
android:layout_margin="5dp">
<TableRow>
<TextView
style="@style/StyleLabel"
android:text="@string/name_lbl"/>
<TextView
android:id="@+id/nameText"
style="@style/StyleText"/>
</TableRow>
<TableRow>
<TextView
style="@style/StyleLabel"
android:text="@string/cap_lbl"/>
<TextView
android:id="@+id/capText"
style="@style/StyleText"/>
</TableRow>
<TableRow>
<TextView
style="@style/StyleLabel"
android:text="@string/code_lbl"/>
<TextView
android:id="@+id/codeText"
style="@style/StyleText"/>
</TableRow>
<TableRow>
<TextView
style="@style/StyleLabel"
android:text="Linked Users"/>
<TextView
style="@style/StyleText"/>
</TableRow>
<TableRow>
<TextView
style="@style/StyleLabel"
android:text="Time Limit"/>
<TextView
android:id="@+id/timeEdit"
style="@style/StyleText"/>
</TableRow>
</TableLayout>
ViewCountry java
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.TimePicker;
public class ViewCountry extends Activity {
private long rowID;
private TextView nameTv;
private TextView capTv;
private TextView codeTv;
private TimePicker timeTv;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.view_country);
setUpViews();
Bundle extras = getIntent().getExtras();
rowID = extras.getLong(CountryList.ROW_ID);
}
private void setUpViews() {
nameTv = (TextView) findViewById(R.id.nameText);
capTv = (TextView) findViewById(R.id.capText);
timeTv = (TimePicker) findViewById(R.id.timeEdit);
codeTv = (TextView) findViewById(R.id.codeText);
}
@Override
protected void onResume()
{
super.onResume();
new LoadContacts().execute(rowID);
}
private class LoadContacts extends AsyncTask<Long, Object, Cursor>
{
DatabaseConnector dbConnector = new DatabaseConnector(ViewCountry.this);
@Override
protected Cursor doInBackground(Long... params)
{
dbConnector.open();
return dbConnector.getOneContact(params[0]);
}
@Override
protected void onPostExecute(Cursor result)
{
super.onPostExecute(result);
result.moveToFirst();
// get the column index for each data item
int nameIndex = result.getColumnIndex("name");
int capIndex = result.getColumnIndex("cap");
int codeIndex = result.getColumnIndex("code");
int timeIndex = result.getColumnIndex("time");
nameTv.setText(result.getString(nameIndex));
capTv.setText(result.getString(capIndex));
timeTv.setCurrentHour(result.getInt(timeIndex));
codeTv.setText(result.getString(codeIndex));
result.close();
dbConnector.close();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
super.onCreateOptionsMenu(menu);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.view_country_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case R.id.editItem:
Intent addEditContact =
new Intent(this, AddEditCountry.class);
addEditContact.putExtra(CountryList.ROW_ID, rowID);
addEditContact.putExtra("name", nameTv.getText());
addEditContact.putExtra("cap", capTv.getText());
addEditContact.putExtra("code", codeTv.getText());
addEditContact.putExtra("time", timeTv.getCurrentHour());
startActivity(addEditContact);
return true;
case R.id.deleteItem:
deleteContact();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void deleteContact()
{
AlertDialog.Builder alert = new AlertDialog.Builder(ViewCountry.this);
alert.setTitle(R.string.confirmTitle);
alert.setMessage(R.string.confirmMessage);
alert.setPositiveButton(R.string.delete_btn,
new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int button)
{
final DatabaseConnector dbConnector =
new DatabaseConnector(ViewCountry.this);
AsyncTask<Long, Object, Object> deleteTask =
new AsyncTask<Long, Object, Object>()
{
@Override
protected Object doInBackground(Long... params)
{
dbConnector.deleteContact(params[0]);
return null;
}
@Override
protected void onPostExecute(Object result)
{
finish();
}
};
deleteTask.execute(new Long[] { rowID });
}
}
);
alert.setNegativeButton(R.string.cancel_btn, null).show();
}
}
Database Connector
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
public class DatabaseConnector {
private static final String DB_NAME = "WorldCountries";
private SQLiteDatabase database;
private DatabaseOpenHelper dbOpenHelper;
public DatabaseConnector(Context context) {
dbOpenHelper = new DatabaseOpenHelper(context, DB_NAME, null, 1);
}
public void open() throws SQLException
{
//open database in reading/writing mode
database = dbOpenHelper.getWritableDatabase();
}
public void close()
{
if (database != null)
database.close();
}
public void insertContact(String name, String cap, String code, String time)
{
ContentValues newCon = new ContentValues();
newCon.put("name", name);
newCon.put("cap", cap);
newCon.put("time", time);
newCon.put("code", code);
open();
database.insert("country", null, newCon);
close();
}
public void updateContact(long id, String name, String cap,String code, String time)
{
ContentValues editCon = new ContentValues();
editCon.put("name", name);
editCon.put("cap", cap);
editCon.put("time", time);
editCon.put("code", code);
open();
database.update("country", editCon, "_id=" + id, null);
close();
}
public Cursor getAllContacts()
{
return database.query("country", new String[] {"_id", "name"},
null, null, null, null, "name");
}
public Cursor getOneContact(long id)
{
return database.query("country", null, "_id=" + id, null, null, null, null);
}
public void deleteContact(long id)
{
open();
database.delete("country", "_id=" + id, null);
close();
}
}
洛卡特:
03-22 04:40:09.319: D/Activity(2206): Activity.onPause(), editTextTapSensorList size: 0
03-22 04:40:09.479: I/Adreno200-EGLSUB(2206): <ConfigWindowMatch:2165>: Format RGBA_8888.
03-22 04:40:09.479: D/memalloc(2206): ion: Mapped buffer base:0x5d00d000 size:614400 offset:0 fd:69
03-22 04:40:09.569: D/memalloc(2206): ion: Mapped buffer base:0x5d997000 size:614400 offset:0 fd:75
03-22 04:40:09.599: D/memalloc(2206): ion: Mapped buffer base:0x5da3d000 size:614400 offset:0 fd:78
03-22 04:40:09.599: D/memalloc(2206): ion: Unmapping buffer base:0x5c989000 size:614400
03-22 04:40:09.599: D/memalloc(2206): ion: Unmapping buffer base:0x5ca41000 size:614400
03-22 04:40:09.599: D/memalloc(2206): ion: Unmapping buffer base:0x5cf66000 size:614400
03-22 04:40:15.376: D/Activity(2206): Activity.onPause(), editTextTapSensorList size: 0
03-22 04:40:15.416: I/Adreno200-EGLSUB(2206): <ConfigWindowMatch:2165>: Format RGBA_8888.
03-22 04:40:15.426: D/memalloc(2206): ion: Mapped buffer base:0x5cf06000 size:614400 offset:0 fd:56
03-22 04:40:15.496: D/memalloc(2206): ion: Mapped buffer base:0x5ddd3000 size:614400 offset:0 fd:60
03-22 04:40:15.516: D/memalloc(2206): ion: Unmapping buffer base:0x5d00d000 size:614400
03-22 04:40:15.516: D/memalloc(2206): ion: Unmapping buffer base:0x5d997000 size:614400
03-22 04:40:15.526: D/memalloc(2206): ion: Unmapping buffer base:0x5da3d000 size:614400
03-22 04:40:15.556: D/memalloc(2206): ion: Mapped buffer base:0x5d00d000 size:614400 offset:0 fd:63
03-22 04:40:18.409: D/Activity(2206): Activity.onPause(), editTextTapSensorList size: 0
03-22 04:40:18.469: W/dalvikvm(2206): threadid=1: thread exiting with uncaught exception (group=0x410889d8)
03-22 04:40:18.469: E/AndroidRuntime(2206): FATAL EXCEPTION: main
03-22 04:40:18.469: E/AndroidRuntime(2206): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.nfc.linkingmanager/com.nfc.linkingmanager.ViewCountry}: java.lang.ClassCastException: android.widget.TextView cannot be cast to android.widget.TimePicker
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1960)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1985)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.ActivityThread.access$600(ActivityThread.java:127)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1151)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.os.Handler.dispatchMessage(Handler.java:99)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.os.Looper.loop(Looper.java:137)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.ActivityThread.main(ActivityThread.java:4477)
03-22 04:40:18.469: E/AndroidRuntime(2206): at java.lang.reflect.Method.invokeNative(Native Method)
03-22 04:40:18.469: E/AndroidRuntime(2206): at java.lang.reflect.Method.invoke(Method.java:511)
03-22 04:40:18.469: E/AndroidRuntime(2206): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788)
03-22 04:40:18.469: E/AndroidRuntime(2206): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
03-22 04:40:18.469: E/AndroidRuntime(2206): at dalvik.system.NativeStart.main(Native Method)
03-22 04:40:18.469: E/AndroidRuntime(2206): Caused by: java.lang.ClassCastException: android.widget.TextView cannot be cast to android.widget.TimePicker
03-22 04:40:18.469: E/AndroidRuntime(2206): at com.nfc.linkingmanager.ViewCountry.setUpViews(ViewCountry.java:38)
03-22 04:40:18.469: E/AndroidRuntime(2206): at com.nfc.linkingmanager.ViewCountry.onCreate(ViewCountry.java:30)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.Activity.performCreate(Activity.java:4701)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1051)
03-22 04:40:18.469: E/AndroidRuntime(2206): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1924)
03-22 04:40:18.469: E/AndroidRuntime(2206): ... 11 more
最佳答案
这就是问题 - 底线，我已经分成多行:
<TableRow>
<TextView style="@style/StyleLabel" android:text="Time Limit"/>
<TimePicker android:id="@+id/timeEdit" style="@style/StyleText"/> </TimePicker>
</TableLayout>
您还没有关闭 TableRow关闭 TableLayout 之前的元素元素。
(请注意，如果您以“自然缩进”的方式布置 XML，而不是在底部放置一长行，您自己可能会更容易看到这一点。)
我还希望您使用任何编辑器来编辑 XML 以非常清楚地显示错误，例如通过在 </TableLayout> 下划线.
关于java - XML 不会显示保存的 TimePicker 数据 (CurrentHour)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15565556/