参考之前博文：
《如何向SQLite批量插入大量记录和其他一些使用心得》
------------------------------代码的分割线---------------------------
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;
public class SQLiteBatchUpdateTool {
private static final String TAG = "SQLiteBatchUpdateTool";
public static interface BatchOperateDataSource {
public int size();
public boolean next();
public void bindAllValues(SQLiteStatement statement);
}
public static boolean batchInsertOrUpdate(String logMsg,
SQLiteHelper helper,String table,String[] columns,
BatchOperateDataSource dataSource) {
if (dataSource == null || dataSource.size() <= 0) {
return false; // 没有数据无需更新
}
if (columns == null || columns.length <= 0) {
Log.e(TAG,logMsg + "传入的列值不正确，不能构造sql");
return false;
}
Log.i(TAG,logMsg + "开始：记录数=" + dataSource.size());
long start = System.currentTimeMillis();
long failedCnt = 0;
long succCnt = 0;
boolean result = false;
try {
synchronized (helper) {
SQLiteDatabase db = helper.getWritableDatabase();
try {
db.beginTransaction();
StringBuilder sql = new StringBuilder();
sql.append("INSERT OR REPLACE INTO ");
sql.append(table);
sql.append('(');
int columnNum = 0;
for (String colName : columns) {
sql.append((columnNum > 0) ? "," : "");
sql.append(colName);
++columnNum;
}
sql.append(')');
sql.append(" VALUES (");
columnNum = 0;
for (int i = 0; i < columns.length; i++) {
sql.append((i > 0) ? ",?" : "?");
++columnNum;
}
sql.append(')');
SQLiteStatement statement = db.compileStatement(sql.toString());
while (dataSource.next()) {
dataSource.bindAllValues(statement);
if (statement.executeInsert() != -1) {
++succCnt;
} else {
++failedCnt;
}
statement.clearBindings();
}
result = true;
db.setTransactionSuccessful
();
} catch (Exception e) {
Log.e(TAG,logMsg + "执行数据库操作异常",e);
result = false;
} finally {
if (db != null) {
try {
db.endTransaction();
} catch (Exception e) {
Log.e(TAG,logMsg + "结束数据库事务异常",e);
}
try {
db.close();
} catch (Exception e) {
|
