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我有一個數據庫管理器類下面這是導致致命的異常。我很茫然，爲什麼並希望有人能告訴我什麼即時做錯了或者我怎麼能解決這個問題..致命的異常與getWritableDatabase
的代碼：
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;
import android.database.sqlite.SQLiteOpenHelper;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.util.Log;
public class DataBaseManager extends SQLiteOpenHelper{
Context mContext;
private static final String TAG = "DataBaseManager";
private static final int dbVersion = 1;// ++ for DB changes
static final String dbName ="LCInstore";
//Table Names
static final String allIcons = "Icons";
static final String allScreens = "Screens";
static final String isLookUp = "LookUp";
//Column Names - LookUp
static final String colIconID = "IconID";
static final String colScreenID = "ScreenID";
static final String colRank = "Rank"; // order
//Column Names shared by tables: Screens and Icons
static final String colID = "ID";
static final String colType = "Type";
static final String colName = "Name";
//Column Names - Icons
static final String colImage = "Image";
static final String colLabel = "Label";
static final String colIntent = "Intent";
static final String colIParams = "Params";
public DataBaseManager(Context context) {
super(context, dbName, null, dbVersion);
mContext = context;
Log.v(TAG, "Initaited");
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
Log.v(TAG, "on create called");
// Create Icon Table if does not exist
db.execSQL("CREATE TABLE "+ allIcons +"" +
"("+colID + " INTEGER PRIMARY KEY AUTOINCREMENT, "+
colName + " TEXT," +
colImage + " BLOB," +
colLabel + " TEXT," +
colIntent + " TEXT," +
colType + " TEXT)");
// Create Screens Table if does not exist
db.execSQL("CREATE TABLE IF NOT EXISTS " + allScreens +"" +
"("+colID + " INTEGER PRIMARY KEY AUTOINCREMENT, "+
colName + " TEXT," +
colType + " TEXT)");
//Create LookUp Table if does not exist
db.execSQL("CREATE TABLE IF NOT EXISTS " + isLookUp +"" +
"("+colIconID + " INTEGER, "+
colScreenID + " INTEGER," +
colRank + " INTEGER)");
InsertInitData(db);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
Log.v(TAG, "on upgrade called");
db.execSQL("DROP TABLE IF EXISTS "+allIcons);
}
/*private void InsertInitScreens(SQLiteDatabase db) {
ContentValues cv=new ContentValues();
cv.put(colName, "DR_Home");
cv.put(colType, "dr_home");
db.insert(allScreens, colID, cv);
cv.put(colName, "DR_Sub");
cv.put(colType, "dr_sub");
db.insert(allScreens, colID, cv);
}*/
private void InsertInitData(SQLiteDatabase db) {
//all Icons
addIconFromWeb(this, "Icon1", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon2", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon3", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon4", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon5", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon6", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromRes(this, "Icon7", R.drawable.dr_tablet_icon, "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon8", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon9", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon10", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon11", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
addIconFromWeb(this, "Icon12", "http://sapientboston.com/internal/elidd/red.png", "MY RED ICON", "someIntent", "generic");
ContentValues cv2=new ContentValues();
cv2.put(colName, "DR_Home");
cv2.put(colType, "dr_home");
db.insert(allScreens, colID, cv2);
cv2.put(colName, "DR_Sub");
cv2.put(colType, "dr_sub");
db.insert(allScreens, colID, cv2);
addIconToScreen(1, "DR_Sub");
addIconToScreen(2, "DR_Sub");
addIconToScreen(3, "DR_Sub");
addIconToScreen(4, "DR_Sub");
addIconToScreen(5, "DR_Sub");
addIconToScreen(6, "DR_Sub");
addIconToScreen(7, "DR_Sub");
addIconToScreen(8, "DR_Sub");
addIconToScreen(9, "DR_Sub");
addIconToScreen(10,"DR_Sub");
}
public byte[] getBlobFromRes(int d) {
byte[] blobData;
Bitmap bitmap = BitmapFactory.decodeResource(this.mContext.getResources(),
d);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
blobData = stream.toByteArray();
return blobData;
}
public void addIconFromRes(DataBaseManager db,String name, int res, String label, String intent, String type) {
SQLiteDatabase mdb = db.getWritableDatabase();
ContentValues cv=new ContentValues();
cv.put(colName, "Icon7");
cv.put(colImage, getBlobFromRes(res));
cv.put(colLabel, "MY RED ICON 2");
cv.put(colIntent, "someIntent");
cv.put(colType, "generic");
mdb.insert(allIcons, colID, cv);
}
public void addIconFromWeb (DataBaseManager db,String name, String url, String label, String intent, String type) {
new DownLoadImageTask (db, name, url, label, intent, type).execute(url);
}
private class DownLoadImageTask extends AsyncTask <String, Void, byte[]> {
String pName;
String pLabel;
String pIntent;
String pType;
SQLiteDatabase mdb;
public DownLoadImageTask(DataBaseManager db, String name, String url, String label, String intent, String type){
pName = name;
pLabel = label;
pIntent = intent;
pType = type;
mdb = db.getWritableDatabase();
}
@Override
protected byte[] doInBackground(String... url) {
byte[] blobData = null;
DefaultHttpClient mHttpClient = new DefaultHttpClient();
HttpGet mHttpGet = new HttpGet(url[0]);
HttpResponse mHttpResponse;
try {
mHttpResponse = mHttpClient.execute(mHttpGet);
if (mHttpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
HttpEntity entity = mHttpResponse.getEntity();
if (entity != null) {
//ContentValues values = new ContentValues();
blobData = EntityUtils.toByteArray(entity);
//mContext.getContentResolver().insert(MyBaseColumn.MyTable.CONTENT_URI, values);
}
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return blobData;
}
@Override
protected void onPostExecute(byte[] result) {
ContentValues cv=new ContentValues();
cv.put(colName, pName);
cv.put(colImage, result);
cv.put(colLabel, pLabel);
cv.put(colIntent, pIntent);
cv.put(colType, pType);
mdb.insert(allIcons, colID, cv);
}
}
public void addIconToScreen(int id, String screenName){
SQLiteDatabase db=this.getWritableDatabase();
int hsID = getScreenID(screenName);
int hsTotal = getScreenTotal(hsID)+1;
Cursor c = db.rawQuery("select * from "+ isLookUp +" where " + colIconID + "=" +id + " and " + colScreenID +"=" +hsID, null);
int numFound = c.getCount();
if(numFound<1){
ContentValues cv= new ContentValues();
cv.put(colScreenID, hsID);
cv.put(colIconID, id);
cv.put(colRank, hsTotal);
db.insert(isLookUp, colID, cv);
}
// else do nothing
}
public int getScreenID(String name){
SQLiteDatabase db=this.getWritableDatabase();
int sID;
String selectQuery = "SELECT "+colID+ " FROM " + allScreens + " WHERE " +colName + "=" +name;
Cursor cursor = db.rawQuery(selectQuery, null);
sID = cursor.getInt(0);
return sID;
}
public int getScreenTotal (int sID){
SQLiteDatabase db=this.getReadableDatabase();
int rows = (int) db.compileStatement("SELECT COUNT(*) FROM " + isLookUp + " where " + colScreenID + "="+sID).simpleQueryForLong();
return rows;
}
public void DeleteScreenIcon (int screenID, int iconID){
SQLiteDatabase db=this.getWritableDatabase();
db.delete(isLookUp, colScreenID + "=" + screenID + " and " +colIconID+ "="+iconID, null);
db.close();
}
// GETTERS
public ArrayList<Integer> getScreenIcons(String screenName) {
int sID = getScreenID(screenName);
ArrayList<Integer> iconList = new ArrayList<Integer>();
// Select All Query
String selectQuery = "SELECT * FROM " + isLookUp + " where " + colScreenID + "=" +sID + " order by " + colRank;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
iconList.add(Integer.parseInt(cursor.getString(0)));
} while (cursor.moveToNext());
}
Log.v(TAG, "List Created");
cursor.close();
db.close();
// return contact list
return iconList;
}
public String getIconLabel(int id){
String label;
String selectQuery = "SELECT "+colLabel+ " FROM " + allIcons + " WHERE " +colIconID + "="+id;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
if(cursor != null)
{
cursor.moveToFirst();
label = cursor.getString(0);
}
else{
label ="";
}
cursor.close();
db.close();
return label;
}
public String getIconImage(int id){
String image;
String selectQuery = "SELECT "+colImage+ " FROM " + allIcons + " WHERE " +colIconID + "="+id;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
if(cursor != null)
{
cursor.moveToFirst();
image = cursor.getString(0);
}
else{
image ="";
}
cursor.close();
db.close();
return image;
}
public int checkHomeScreen(Integer iD) {
// TODO Auto-generated method stub
int sID = getScreenID("DR_Home");
SQLiteDatabase db=this.getReadableDatabase();
int rows = (int) db.compileStatement("SELECT COUNT(*) FROM " + isLookUp + " where " + colScreenID + "="+ sID + " and "+ colIconID + "="+iD).simpleQueryForLong();
return rows;
}
}
和錯誤： 