私は数ヶ月前にこの問題を抱えていましたが、今はそれに戻る時が来ました.
電話の通話履歴をデータベースに照会しますが、テーブルにデータを入力するのに約 30 秒かかります。クエリには約 1 秒かかるように見えますが、電話機には最後の 500 コールのみが保存されますが、データの取り込みには永遠にかかります。なぜそんなに遅いのですか？私は何か間違ったことをしていますか？
エミュレータのコールログには 8 つの項目しかないため、電話でのみテストします。
final String[] projection = null;
HotOrNot infoA = new HotOrNot(Charts.this);
infoA.open();
infoA.createtable_Calls();
infoA.deleteAllEntries_Calls();
infoA.close();
final Context context = getApplicationContext();
final String selection = null;
final String sortOrder = android.provider.CallLog.Calls.DATE + " DESC";
Cursor c = context.getContentResolver().query(android.provider.CallLog.Calls.CONTENT_URI, projection, selection, null, sortOrder);
while (c.moveToNext()) {
String callLogID = c.getString(c.getColumnIndex(android.provider.CallLog.Calls._ID));
int numberColumn = c.getColumnIndex(android.provider.CallLog.Calls.NUMBER);
int dateColumn = c.getColumnIndex(android.provider.CallLog.Calls.DATE);
int typeColumn = c.getColumnIndex(android.provider.CallLog.Calls.TYPE);
int durationColumn = c.getColumnIndex(android.provider.CallLog.Calls.DURATION);
int person = c.getColumnIndex(android.provider.CallLog.Calls.CACHED_NAME);
String number = c.getString(numberColumn);
int duration = c.getInt(durationColumn);
String personname = c.getString(person);
long callDate = c.getLong(dateColumn);
int callType = c.getInt(typeColumn);
if (duration >= 0)
{
switch (callType) {
case 1:
duration_in = duration;
duration_out = 0;
break;
case 2:
duration_out = duration;
duration_in = 0;
break;
case 3:
duration_in = 0;
duration_out = 0;
break;
}
}
//Here comes the slow part
HotOrNot info = new HotOrNot(Charts.this);
info.open();
info.pop
ulate_Calls(personname, number, String.valueOf(callType), Integer.toString(duration), Long.toString(callDate), callLogID);
info.close();
}
これは入力関数です。
public long populate_Calls(String name, String phone, String type, String duration, String date, String contactid) {
ContentValues cv = new ContentValues();
cv.put(KEY_NAME, name);
cv.put(KEY_PHONE, phone);
cv.put(KEY_TYPE, type);
cv.put(KEY_DURATION, duration);
cv.put(KEY_DATE, date);
cv.put(KEY_CONTACTID, contactid);
return ourDatabase.insert(DATABASE_TABLE, null, cv);
}
編集：
Andreas Ka と twaddington の回答に対して、SQLiteOpenHelper クラスの人口メソッドを変更しましたが、残念ながら違いはありませんでした。
public long populate_Calls(String name, String phone, String type, String duration, String date, String contactid) {
ContentValues cv = new ContentValues();
try {
ourDatabase.beginTransaction();
cv.put(KEY_NAME, name);
cv.put(KEY_PHONE, phone);
cv.put(KEY_TYPE, type);
cv.put(KEY_DURATION, duration);
cv.put(KEY_DATE, date);
cv.put(KEY_CONTACTID, contactid);
ourDatabase.yieldIfContendedSafely();
ourDatabase.setTransactionSuccessful();
} finally {
ourDatabase.endTransaction();
}
return ourDatabase.insert(DATABASE_TABLE, null, cv);
}
EDIT2: Babibu と twaddington の回答に基づいてコード全体を投稿します。ちなみに、temp_arrays は LinkedLists になりましたが、時間の違いはありません。
final String[] projection = null;
final Context context = getApplicationContext();
final String selection = null;
final String sortOrder = android.provider.CallLog.Calls.DATE + " DESC";
lv1 = (ListView) findViewById(R.id.ListView02);
HotOrNot infoA = new HotOrNot(Calllogs.this);
infoA.open();
infoA.createtable_Calls();
infoA.deleteAllEntries_Calls();
infoA.close();
pd = ProgressDialog.show(Calllogs.this, "Please wait..", "Loading data, it may take a few" +
" seconds based on the number of data.", false, true);
Cursor c = context.getContentResolver().query(android.provider.CallLog.Calls.CONTENT_URI, projection, selection, null, sortOrder);
while (c.moveToNext()) {
String callLogID = c.getString(c.getColumnIndex(android.provider.CallLog.Calls._ID));
int numberColumn = c.getColumnIndex(android.provider.CallLog.Calls.NUMBER);
int dateColumn = c.getColumnIndex(android.provider.CallLog.Calls.DATE);
int typeColumn = c.getColumnIndex(android.provider.CallLog.Calls.TYPE);
int durationColumn = c.getColumnIndex(android.provider.CallLog.Calls.DURATION);
int person = c.getColumnIndex(android.provider.CallLog.Calls.CACHED_NAME);
String number = c.getString(numberColumn);
int duration = c.getInt(durationColumn);
String personname = c.getString(person);
long callDate = c.getLong(dateColumn);
int callType = c.getInt(typeColumn);
if (duration >= 0)
{
switch (callType) {
case 1:
duration_in = duration;
duration_out = 0;
break;
case 2:
duration_out = duration;
duration_in = 0;
break;
case 3:
duration_in = 0;
duration_out = 0;
break;
}
}
temp_name.add(personname);
temp_num.add(number);
temp_type.add(String.valueOf(callType));
temp_dur.add(Integer.toString(duration));
temp_date.add(String.valueOf(callDate));
temp_id.add(callLogID);
} //end of while loop
HotOrNot infotemp = new HotOrNot(Calllogs.this);
infotemp.open();
for (int i=0; i<temp_name.size(); i++)
{
infotemp.populate_Calls(temp_name.get(i), temp_num.get(i), temp_type.get(i), temp_dur.get(i), temp_date.get(i), temp_type.get(i));
}
infotemp.close();
解決
私は twaddington のソリューションを投稿しています。これにより、時間が 8 秒から 2 秒未満に短縮されました。
HotOrNot infotemp = new HotOrNot(Calllogs.this);
infotemp.open();
// Get our database. You can do this however you wish, but
// it seems like since the database is contained in your `HotOrNot`
// object, it would be best to simply add a getter method to
// the class.
SQLiteDatabase db = infotemp.getDatabase();
try {
// Begin our transaction
db.beginTransaction();
// Loop over the array of calls and
// perform a db insert for each.
for (int i=0; i<temp_name.size(); i++) {
// Yield the database lock if requested. This will
// temporarily suspend our loop, but it should
// continue when the lock is opened.
db.yieldIfContendedSafely();
infotemp.populate_Calls(temp_name.get(i), temp_num.get(i),
temp_type.get(i), temp_dur.get(i), temp_date.get(i), temp_type.get(i));
}
// Mark our transaction as successful!
db.setTransactionSuccessful();
} finally {
// Always end the transaction!
db.endTransaction();
}
infotemp.close();