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Minor refinements to prep for history change

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git-svn-id: https://zxing.googlecode.com/svn/trunk@2079 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
srowen 2011-12-11 16:24:03 +00:00
parent a12326f2d4
commit 08acd5b8f7
2 changed files with 49 additions and 96 deletions
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4
android/src/com/google/zxing/client/android/CaptureActivity.java
View file

@ -356,8 +356,10 @@ public final class CaptureActivity extends Activity implements SurfaceHolder.Cal
builder.setNegativeButton(R.string.button_cancel, null);
builder.show();
break;
default:
return super.onOptionsItemSelected(item);
}
return super.onOptionsItemSelected(item);
return true;
}
@Override

141
android/src/com/google/zxing/client/android/history/HistoryManager.java
View file

@ -31,7 +31,6 @@ import android.content.SharedPreferences;
import android.content.res.Resources;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.net.Uri;
import android.os.Environment;
@ -114,15 +113,8 @@ public final class HistoryManager {
dialogItems.add(displayResult.toString());
}
} catch (SQLiteException sqle) {
Log.w(TAG, "Error while opening database", sqle);
} finally {
if (cursor != null) {
cursor.close();
}
if (db != null) {
db.close();
}
close(cursor, db);
}
Resources res = activity.getResources();
@ -155,56 +147,37 @@ public final class HistoryManager {
values.put(DBHelper.TIMESTAMP_COL, System.currentTimeMillis());
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db;
try {
db = helper.getWritableDatabase();
} catch (SQLiteException sqle) {
Log.w(TAG, "Error while opening database", sqle);
return;
}
SQLiteDatabase db = null;
try {
db = helper.getWritableDatabase();
// Insert the new entry into the DB.
db.insert(DBHelper.TABLE_NAME, DBHelper.TIMESTAMP_COL, values);
} finally {
db.close();
close(null, db);
}
}
public void addHistoryItemDetails(String itemID, String itemDetails) {
// As we're going to do an update only we don't need need to worry
// about the preferences; if the item wasn't saved it won't be udpated
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db;
SQLiteDatabase db = null;
Cursor cursor = null;
try {
db = helper.getWritableDatabase();
} catch (SQLiteException sqle) {
Log.w(TAG, "Error while opening database", sqle);
return;
}
try {
Cursor cursor = null;
cursor = db.query(DBHelper.TABLE_NAME,
ID_DETAIL_COL_PROJECTION,
DBHelper.TEXT_COL + "=?",
new String[] { itemID },
null,
null,
DBHelper.TIMESTAMP_COL + " DESC",
"1");
String oldID = null;
String oldDetails = null;
try {
cursor = db.query(DBHelper.TABLE_NAME,
ID_DETAIL_COL_PROJECTION,
DBHelper.TEXT_COL + "=?",
new String[] { itemID },
null,
null,
DBHelper.TIMESTAMP_COL + " DESC");
if (cursor.moveToNext()) {
oldID = cursor.getString(0);
oldDetails = cursor.getString(1);
}
} finally {
if (cursor != null) {
cursor.close();
}
if (cursor.moveToNext()) {
oldID = cursor.getString(0);
oldDetails = cursor.getString(1);
}
String newDetails = oldDetails == null ? itemDetails : oldDetails + " : " + itemDetails;
@ -214,53 +187,37 @@ public final class HistoryManager {
db.update(DBHelper.TABLE_NAME, values, DBHelper.ID_COL + "=?", new String[] { oldID });
} finally {
db.close();
close(cursor, db);
}
}
private void deletePrevious(String text) {
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db;
try {
db = helper.getWritableDatabase();
} catch (SQLiteException sqle) {
Log.w(TAG, "Error while opening database", sqle);
return;
}
SQLiteDatabase db = null;
try {
db = helper.getWritableDatabase();
db.delete(DBHelper.TABLE_NAME, DBHelper.TEXT_COL + "=?", new String[] { text });
} finally {
db.close();
close(null, db);
}
}
public void trimHistory() {
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db;
try {
db = helper.getWritableDatabase();
} catch (SQLiteException sqle) {
Log.w(TAG, "Error while opening database", sqle);
return;
}
SQLiteDatabase db = null;
Cursor cursor = null;
try {
db = helper.getWritableDatabase();
cursor = db.query(DBHelper.TABLE_NAME,
ID_COL_PROJECTION,
null, null, null, null,
DBHelper.TIMESTAMP_COL + " DESC");
int count = 0;
while (count < MAX_ITEMS && cursor.moveToNext()) {
count++;
}
cursor.move(MAX_ITEMS);
while (cursor.moveToNext()) {
db.delete(DBHelper.TABLE_NAME, DBHelper.ID_COL + '=' + cursor.getString(0), null);
}
} finally {
if (cursor != null) {
cursor.close();
}
db.close();
close(cursor, db);
}
}
@ -281,16 +238,10 @@ public final class HistoryManager {
CharSequence buildHistory() {
StringBuilder historyText = new StringBuilder(1000);
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db;
try {
db = helper.getWritableDatabase();
} catch (SQLiteException sqle) {
Log.w(TAG, "Error while opening database", sqle);
return "";
}
SQLiteDatabase db = null;
Cursor cursor = null;
try {
db = helper.getWritableDatabase();
cursor = db.query(DBHelper.TABLE_NAME,
COLUMNS,
null, null, null, null,
@ -312,14 +263,21 @@ public final class HistoryManager {
historyText.append('"').append(massageHistoryField(cursor.getString(4))).append("\"\r\n");
}
return historyText;
} finally {
if (cursor != null) {
cursor.close();
}
db.close();
close(cursor, db);
}
}
void clearHistory() {
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db = null;
try {
db = helper.getWritableDatabase();
db.delete(DBHelper.TABLE_NAME, null, null);
} finally {
close(null, db);
}
return historyText;
}
static Uri saveHistory(String history) {
@ -352,20 +310,13 @@ public final class HistoryManager {
private static String massageHistoryField(String value) {
return value == null ? "" : value.replace("\"","\"\"");
}
void clearHistory() {
SQLiteOpenHelper helper = new DBHelper(activity);
SQLiteDatabase db;
try {
db = helper.getWritableDatabase();
} catch (SQLiteException sqle) {
Log.w(TAG, "Error while opening database", sqle);
return;
private static void close(Cursor cursor, SQLiteDatabase database) {
if (cursor != null) {
cursor.close();
}
try {
db.delete(DBHelper.TABLE_NAME, null, null);
} finally {
db.close();
if (database != null) {
database.close();
}
}