Question

Android sqlite中判断某个表是不是存在方法

Answer 1

sqlite 中判断某个表是否存在的方法

/**
* 判断某张表是否存在
* @param tabName 表名
* @return
*/
public boolean tabbleIsExist(String tableName){
boolean result = false;
if(tableName == null){
return false;
}
SQLiteDatabase db = null;
Cursor cursor = null;
try {
db = this.getReadableDatabase();
String sql = "select count(*) as c from Sqlite_master where type ='table' and name ='"+tableName.trim()+"' ";
cursor = db.rawQuery(sql, null);
if(cursor.moveToNext()){
int count = cursor.getInt(0);
if(count>0){
result = true;
}
}

} catch (Exception e) {
// TODO: handle exception
}
return result;
}