我有一个应用程序将 CurrentHour 存储在 sqlite 数据库中，然后将其显示在另一个活动中。这是我第一次使用 TimePicker - 所以我不确定自己到底做错了什么，但是当我添加到存储和查看 CurrentHour 的成功代码时 - 当我尝试为 CurrentMinute 添加代码（基于 CurrentHour）时应用程序不会保存数据。
add_country.xml （我试图从中存储分钟值的 TimePicker 所在的位置）
<?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>
添加国家/地区 JAVA
来自 TimePicker 的很可能的分钟值在这里搞砸了
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;
private TimePicker minEt;
@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);
minEt = (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"));
minEt.setCurrentMinute(extras.getInt("min"));
}
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(),
minEt.getCurrentMinute().toString(),
codeEt.getText().toString());
}
else
{
dbConnector.updateContact(rowID,
nameEt.getText().toString(),
capEt.getText().toString(),
timeEt.getCurrentHour().toString(), /* Storing as String*/
minEt.getCurrentMinute().toString(),
codeEt.getText().toString());
}
}
}
数据库连接器 Java
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, String min)
{
ContentValues newCon = new ContentValues();
newCon.put("name", name);
newCon.put("cap", cap);
newCon.put("time", time);
newCon.put("min", min);
newCon.put("code", code);
open();
database.insert("country", null, newCon);
close();
}
public void updateContact(long id, String name, String cap,String code, String time, String min)
{
ContentValues editCon = new ContentValues();
editCon.put("name", name);
editCon.put("cap", cap);
editCon.put("time", time);
editCon.put("min", min);
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();
}
}
数据库打开助手.JAVA
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
public class DatabaseOpenHelper extends SQLiteOpenHelper {
public DatabaseOpenHelper(Context context, String name,
CursorFactory factory, int version) {
super(context, name, factory, version);
}
@Override
public void onCreate(SQLiteDatabase db) {
String createQuery = "CREATE TABLE country (_id integer primary key autoincrement,name, cap, code, time, min);";
db.execSQL(createQuery);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}
附言
我希望将 CurrentHour 和 CurrentMinute 同时显示在 view_country.xml 的同一行（如果可能）
<TextView
android:id="@+id/timeEdit"
style="@style/StyleText"/>
如果不是 - 只是获得一些帮助传递数据会很棒！（一旦我弄清楚为什么数据没有通过，我会弄清楚其余的）
日志猫：
03-22 08:41:10.120: D/Activity(9149): Activity.onPause(), editTextTapSensorList size: 0
03-22 08:41:10.240: I/Adreno200-EGLSUB(9149): <ConfigWindowMatch:2165>: Format RGBA_8888.
03-22 08:41:10.240: D/memalloc(9149): ion: Mapped buffer base:0x5d981000 size:614400 offset:0 fd:69
03-22 08:41:10.300: D/memalloc(9149): ion: Mapped buffer base:0x5da29000 size:614400 offset:0 fd:75
03-22 08:41:10.350: D/memalloc(9149): ion: Mapped buffer base:0x5debf000 size:614400 offset:0 fd:78
03-22 08:41:10.360: D/memalloc(9149): ion: Unmapping buffer base:0x5d05e000 size:614400
03-22 08:41:10.360: D/memalloc(9149): ion: Unmapping buffer base:0x5d12e000 size:614400
03-22 08:41:10.360: D/memalloc(9149): ion: Unmapping buffer base:0x5d385000 size:614400
03-22 08:41:16.316: E/SQLiteDatabase(9149): Error inserting min= time=41 code=8 cap= name=Tttttsstttt
03-22 08:41:16.316: E/SQLiteDatabase(9149): android.database.sqlite.SQLiteException: table country has no column named min: , while compiling: INSERT INTO country(min,time,code,cap,name) VALUES (?,?,?,?,?)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:68)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteProgram.compileSql(SQLiteProgram.java:143)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteProgram.compileAndbindAllArgs(SQLiteProgram.java:361)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteStatement.acquireAndLock(SQLiteStatement.java:260)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:112)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1736)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1609)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at com.nfc.linkingmanager.DatabaseConnector.insertContact(DatabaseConnector.java:42)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at com.nfc.linkingmanager.AddEditCountry.saveContact(AddEditCountry.java:96)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at com.nfc.linkingmanager.AddEditCountry.access$1(AddEditCountry.java:90)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at com.nfc.linkingmanager.AddEditCountry$1$1.doInBackground(AddEditCountry.java:63)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.os.AsyncTask$2.call(AsyncTask.java:264)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
03-22 08:41:16.316: E/SQLiteDatabase(9149): at java.lang.Thread.run(Thread.java:856)
03-22 08:41:16.316: D/Activity(9149): Activity.onPause(), editTextTapSensorList size: 0
03-22 08:41:16.336: I/Adreno200-EGLSUB(9149): <ConfigWindowMatch:2165>: Format RGBA_8888.
03-22 08:41:16.347: D/memalloc(9149): ion: Mapped buffer base:0x5d05e000 size:614400 offset:0 fd:58
03-22 08:41:16.377: D/memalloc(9149): ion: Mapped buffer base:0x5d12e000 size:614400 offset:0 fd:62
03-22 08:41:16.407: D/memalloc(9149): ion: Unmapping buffer base:0x5d981000 size:614400
03-22 08:41:16.407: D/memalloc(9149): ion: Unmapping buffer base:0x5da29000 size:614400
03-22 08:41:16.407: D/memalloc(9149): ion: Unmapping buffer base:0x5debf000 size:614400
03-22 08:41:16.457: D/memalloc(9149): ion: Mapped buffer base:0x5d385000 size:614400 offset:0 fd:66