嘿大家我正在尝试向sqlite数据库插入数据，但是当我点击插入按钮时没有任何事情发生没有强制关闭，没有错误，没有成功/不成功的吐司消息什么都没有。当我点击查看数据库信息按钮没有数据被插入到db.I我之前做过这个并没有问题，但是这次我找不到我出错的地方请帮我提前谢谢你。
MainActivity
package com.example.sql;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
Button insert,viewd;
EditText name,age;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
name = (EditText)findViewById(R.id.etname);
age = (EditText) findViewById(R.id.etage);
insert = (Button)findViewById(R.id.btninsert);
viewd = (Button)findViewById(R.id.btnview);
insert.setOnClickListener(this);
viewd.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final MediaPlayer mpButtonClick = MediaPlayer.create(this, R.raw.buttonclick);
switch (v.getId()) {
case R.id.btninsert:
boolean status = true;
try{
String name1 = name.getText().toString();
String age1 = age.getText().toString();
SQLActivity entry = new SQLActivity(MainActivity.this);
entry.open();
entry.passDataToEntry(name1,age1);
entry.close();
mpButtonClick.start();
}
catch (Exception e) {
// TODO: handle exception
status=false;
String error = e.toString();
Log.e("Exception found ",error);
}
finally{
if(status)
{
Toast.makeText(getApplicationContext(), "Successfully Inserted", Toast.LENGTH_SHORT).show();
}
}
break;
case R.id.btnview:
Intent i = new Intent("com.example.sql.VIEW");
startActivity(i);
break;
}
}
}
SQLActivity
package com.example.sql;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class SQLActivity {
public static final String KEY_ROWID = "_id";
public static final String KEY_NAME = "p_name";
public static final String KEY_AGE = "p_age";
private static final String DATABASE_NAME = "SQLDB";
private static final String DATABASE_TABLE = "data_table";
private static final int DATABASE_VERSION = 1;
private DbHelper ourHelper;
private final Context ourContext;
private SQLiteDatabase ourDatabase;
private static class DbHelper extends SQLiteOpenHelper
{
public DbHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" + KEY_ROWID
+ " INTEGER PRIMARY KEY AUTOINCREMENT , " + KEY_NAME + " TEXT NOT NULL , "
+ KEY_AGE + " TEXT NOT NULL);"
);
String y = "CREATE TABLE " + DATABASE_TABLE + " (" + KEY_ROWID
+ " INTEGER PRIMARY KEY AUTOINCREMENT , " + KEY_NAME + " TEXT NOT NULL , "
+ KEY_AGE + " TEXT NOT NULL);";
//System.out.println("query" + y);
Log.d("query", y);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
Log.w("TaskDBAdapter", "Upgrading from version " +
oldVersion + " to " +
newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
onCreate(db);
}
}
public SQLActivity(Context c)
{
ourContext = c;
}
public SQLActivity open() throws SQLException
{
ourHelper = new DbHelper(ourContext);
ourDatabase = ourHelper.getWritableDatabase();
return this;
}
public void close()
{
ourHelper.close();
}
public long passDataToEntry(String name1, String age1) {
// TODO Auto-generated method stub
ContentValues cv = new ContentValues();
cv.put(KEY_NAME, name1);
cv.put(KEY_AGE, age1);
int i = (int)ourDatabase.insert(DATABASE_TABLE, null, cv);
String MY_TAG="";
Log.d(MY_TAG,"Value= "+i);
return ourDatabase.insert(DATABASE_TABLE, null, cv);
}
public String getData() {
// TODO Auto-generated method stub
String[] columns = new String[]{KEY_NAME,KEY_AGE};
Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null);
String result = "";
int iRow = c.getColumnIndex(KEY_ROWID);
int iName = c.getColumnIndex(KEY_NAME);
int iAge = c.getColumnIndex(KEY_AGE);
for(c.moveToFirst(); !c.isAfterLast(); c.moveToNext())
{
result = result + c.getString(iName) + " " + c.getString(iAge) + "\n";
}
return result;
}
}
activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="28dp"
android:text="Name"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/etname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="14dp"
android:ems="10"
android:inputType="textPersonName" />
<TextView
android:id="@+id/tvinfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="40dp"
android:text="Age"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/etage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="number" />
<Button
android:id="@+id/btninsert"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="130dp"
android:text="Insert" />
<Button
android:id="@+id/btnview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="View" />
</LinearLayout>
logcat的
04-18 22:43:50.625: E/Zygote(33): setreuid() failed. errno: 2
04-18 22:43:56.095: E/Zygote(33): setreuid() failed. errno: 17
04-18 22:43:56.985: E/BatteryService(59): usbOnlinePath not found
04-18 22:43:56.985: E/BatteryService(59): batteryVoltagePath not found
04-18 22:43:56.985: E/BatteryService(59): batteryTemperaturePath not found
04-18 22:43:56.995: E/SurfaceFlinger(59): Couldn't open /sys/power/wait_for_fb_sleep or /sys/power/wait_for_fb_wake
04-18 22:44:01.455: E/EventHub(59): could not get driver version for /dev/input/mouse0, Not a typewriter
04-18 22:44:01.455: E/EventHub(59): could not get driver version for /dev/input/mice, Not a typewriter
04-18 22:44:02.105: E/System(59): Failure starting core service
04-18 22:44:02.105: E/System(59): java.lang.SecurityException
04-18 22:44:02.105: E/System(59): at android.os.BinderProxy.transact(Native Method)
04-18 22:44:02.105: E/System(59): at android.os.ServiceManagerProxy.addService(ServiceManagerNative.java:146)
04-18 22:44:02.105: E/System(59): at android.os.ServiceManager.addService(ServiceManager.java:72)
04-18 22:44:02.105: E/System(59): at com.android.server.ServerThread.run(SystemServer.java:184)
04-18 22:44:02.665: E/SoundPool(59): error loading /system/media/audio/ui/Effect_Tick.ogg
04-18 22:44:02.675: E/SoundPool(59): error loading /system/media/audio/ui/KeypressStandard.ogg
04-18 22:44:02.675: E/SoundPool(59): error loading /system/media/audio/ui/KeypressSpacebar.ogg
04-18 22:44:02.675: E/SoundPool(59): error loading /system/media/audio/ui/KeypressDelete.ogg
04-18 22:44:02.675: E/SoundPool(59): error loading /system/media/audio/ui/KeypressReturn.ogg
04-18 22:44:03.755: E/ThrottleService(59): Could not open GPS configuration file /etc/gps.conf
04-18 22:44:05.005: E/logwrapper(147): executing /system/bin/tc failed: No such file or directory
04-18 22:44:05.045: E/logwrapper(148): executing /system/bin/tc failed: No such file or directory
04-18 22:44:05.065: E/logwrapper(149): executing /system/bin/tc failed: No such file or directory
04-18 22:44:10.423: E/HierarchicalStateMachine(59): TetherMaster - unhandledMessage: msg.what=3
ViewActivity
package com.example.sql;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class ViewActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.view);
TextView tv = (TextView)findViewById(R.id.tvinfo);
SQLActivity info = new SQLActivity(this);
info.open();
info.getData();
}
}
view.xml用
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Data...." />
<TextView
android:id="@+id/tvinfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="DB Info" />
</LinearLayout>
答案 0 :(得分：1)
以下是简单的SQlite数据库尝试此操作并将其与您的方案相匹配。
RegistrationAdapter.java
package com.example.registrationform;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
public class RegistrationAdapter {
SQLiteDatabase database_ob;
RegistrationOpenHelper openHelper_ob;
Context context;
public RegistrationAdapter(Context c) {
context = c;
}
public RegistrationAdapter opnToRead() {
openHelper_ob = new RegistrationOpenHelper(context,
openHelper_ob.DATABASE_NAME, null, openHelper_ob.VERSION);
database_ob = openHelper_ob.getReadableDatabase();
return this;
}
public RegistrationAdapter opnToWrite() {
openHelper_ob = new RegistrationOpenHelper(context,
openHelper_ob.DATABASE_NAME, null, openHelper_ob.VERSION);
database_ob = openHelper_ob.getWritableDatabase();
return this;
}
public void Close() {
database_ob.close();
}
public long insertDetails(String fname, String lname) {
ContentValues contentValues = new ContentValues();
contentValues.put(openHelper_ob.FNAME, fname);
contentValues.put(openHelper_ob.LNAME, lname);
opnToWrite();
long val = database_ob.insert(openHelper_ob.TABLE_NAME, null,
contentValues);
Close();
return val;
}
public Cursor queryName() {
String[] cols = { openHelper_ob.KEY_ID, openHelper_ob.FNAME,
openHelper_ob.LNAME };
opnToWrite();
Cursor c = database_ob.query(openHelper_ob.TABLE_NAME, cols, null,
null, null, null, null);
return c;
}
public Cursor queryAll(int nameId) {
String[] cols = { openHelper_ob.KEY_ID, openHelper_ob.FNAME,
openHelper_ob.LNAME };
opnToWrite();
Cursor c = database_ob.query(openHelper_ob.TABLE_NAME, cols,
openHelper_ob.KEY_ID + "=" + nameId, null, null, null, null);
return c;
}
public long updateldetail(int rowId, String fname, String lname) {
ContentValues contentValues = new ContentValues();
contentValues.put(openHelper_ob.FNAME, fname);
contentValues.put(openHelper_ob.LNAME, lname);
opnToWrite();
long val = database_ob.update(openHelper_ob.TABLE_NAME, contentValues,
openHelper_ob.KEY_ID + "=" + rowId, null);
Close();
return val;
}
public int deletOneRecord(int rowId) {
// TODO Auto-generated method stub
opnToWrite();
int val = database_ob.delete(openHelper_ob.TABLE_NAME,
openHelper_ob.KEY_ID + "=" + rowId, null);
Close();
return val;
}
}
openhelper.java
package com.example.registrationform;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
public class RegistrationOpenHelper extends SQLiteOpenHelper {
public static final String DATABASE_NAME = "REGISTRATION_DB";
public static final String TABLE_NAME = "REGISTRATION_TABLE";
public static final String TABLE_NAME_ONE = "REGISTRATION_TABLE_ONE";
public static final int VERSION = 1;
public static final String KEY_ID = "_id";
public static final String FNAME = "F_NAME";
public static final String PKEY_ID = "pid";
public static final String PROFILE = "profile";
public static final String LNAME = "L_NAME";
public static final String SCRIPT = "create table " + TABLE_NAME + " ("
+ KEY_ID + " integer primary key autoincrement, " + FNAME
+ " text not null, " + LNAME + " text not null );";
public static final String PROFILE_TABLE = "create table " + TABLE_NAME_ONE + " ("
+ PKEY_ID + " integer primary key autoincrement, " + PROFILE
+ " text not null, );";
/* public static final String PROFILE_TABLE="create table profiletable(profileid integer primary key autoincrement,profilename text null);";
public static final String VALUE_TABLE="create table valuetable(id integer primary key autoincrement,value text null,delay );";
*/
public RegistrationOpenHelper(Context context, String name,
CursorFactory factory, int version) {
super(context, name, factory, version);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL(SCRIPT);
db.execSQL(PROFILE_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("drop table " + TABLE_NAME);
db.execSQL("drop table "+TABLE_NAME_ONE);
onCreate(db);
}
}
RegistrationActivity.java
package com.example.registrationform;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class RegistrationActivity extends Activity {
RegistrationAdapter adapter;
RegistrationOpenHelper helper;
EditText fnameEdit, lnameEdit;
Button submitBtn, resetBtn;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
fnameEdit = (EditText) findViewById(R.id.et_fname);
lnameEdit = (EditText) findViewById(R.id.et_lname);
submitBtn = (Button) findViewById(R.id.btn_submit);
resetBtn = (Button) findViewById(R.id.btn_reset);
adapter = new RegistrationAdapter(this);
submitBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
String fnameValue = fnameEdit.getText().toString();
String lnameValue = lnameEdit.getText().toString();
long val = adapter.insertDetails(fnameValue, lnameValue);
// Toast.makeText(getApplicationContext(), Long.toString(val),
// 300).show();
finish();
}
});
resetBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
fnameEdit.setText("");
lnameEdit.setText("");
}
});
}
}
MainActivity.java
package com.example.registrationform;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
public class MainActivity extends Activity {
RegistrationAdapter adapter_ob;
RegistrationOpenHelper helper_ob;
SQLiteDatabase db_ob;
ListView nameList;
Button registerBtn;
Cursor cursor;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
nameList = (ListView) findViewById(R.id.lv_name);
registerBtn = (Button) findViewById(R.id.btn_register);
adapter_ob = new RegistrationAdapter(this);
String[] from = { helper_ob.FNAME, helper_ob.LNAME };
int[] to = { R.id.tv_fname, R.id.tv_lname };
cursor = adapter_ob.queryName();
SimpleCursorAdapter cursorAdapter = new SimpleCursorAdapter(this,
R.layout.row, cursor, from, to);
nameList.setAdapter(cursorAdapter);
nameList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
Bundle passdata = new Bundle();
Cursor listCursor = (Cursor) arg0.getItemAtPosition(arg2);
int nameId = listCursor.getInt(listCursor
.getColumnIndex(helper_ob.KEY_ID));
passdata.putInt("keyid", nameId);
Intent passIntent = new Intent(MainActivity.this,
EditActivity.class);
passIntent.putExtras(passdata);
startActivity(passIntent);
}
});
registerBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent registerIntent = new Intent(MainActivity.this,
RegistrationActivity.class);
startActivity(registerIntent);
}
});
}
@Override
public void onResume() {
super.onResume();
cursor.requery();
}
}
EditActivity.java
package com.example.registrationform;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class EditActivity extends Activity {
RegistrationAdapter regadapter;
RegistrationOpenHelper openHelper;
int rowId;
Cursor c;
String fNameValue, lNameValue;
EditText fname, lname;
Button editSubmit, btnDelete;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.editregister);
fname = (EditText) findViewById(R.id.et_editfname);
lname = (EditText) findViewById(R.id.et_editlname);
editSubmit = (Button) findViewById(R.id.btn_update);
btnDelete = (Button) findViewById(R.id.btn_delete);
Bundle showData = getIntent().getExtras();
rowId = showData.getInt("keyid");
// Toast.makeText(getApplicationContext(), Integer.toString(rowId),
// 500).show();
regadapter = new RegistrationAdapter(this);
c = regadapter.queryAll(rowId);
if (c.moveToFirst()) {
do {
fname.setText(c.getString(1));
lname.setText(c.getString(2));
} while (c.moveToNext());
}
editSubmit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
regadapter.updateldetail(rowId, fname.getText().toString(),
lname.getText().toString());
finish();
}
});
btnDelete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
regadapter.deletOneRecord(rowId);
finish();
}
});
}
}
答案 1 :(得分：0)
在ViewActiviy中设置文本
tv.setText(info.getData());
info.close();