我在SQLiteDatabase中存储一个呼叫持续时间(以秒为单位),我需要将其显示为用户的分钟。这是声明:
Cursor listCur = mDb.rawQuery(
"SELECT * FROM " + mDbCallTable.TABLE_NAME +
" JOIN " + mDbPhoneTable.TABLE_NAME +
" ON " + mDbCallTable.TABLE_NAME+"."+mDbCallTable.COLUMN_PHONE+"="+mDbPhoneTable.TABLE_NAME+"."+mDbPhoneTable.COLUMN_PHONE +
" JOIN " + mDbCustomerTable.TABLE_NAME +
" ON " + mDbPhoneTable.TABLE_NAME+"."+mDbPhoneTable.COLUMN_CUST_ID+"="+mDbCustomerTable.TABLE_NAME+"."+mDbCustomerTable._ID,
null
);
这里是我将它连接到SimpleCursorAdapter进行显示的地方:
ListView theList;
SimpleCursorAdapter adapter;
theList = (ListView)findViewById(R.id.call_list);
listCur.moveToFirst();
adapter = new SimpleCursorAdapter(
MainActivity.this,
R.layout.call_list_item,
listCur,
new String[] {
mDbCallTable.TABLE_NAME+"."+mDbCallTable.COLUMN_PHONE,
mDbCustomerTable.TABLE_NAME+"."+mDbCustomerTable.COLUMN_NAME,
mDbCallTable.TABLE_NAME+"."+mDbCallTable.COLUMN_DURATION
},
new int[] {
R.id.item_text_phone,
R.id.item_text_customer,
R.id.item_text_duration
}
);
theList.setAdapter(adapter);
在这里的某个地方,我需要除以60得到分钟并加1(向上舍入到最近的分钟)。我该怎么做?
答案 0 :(得分:3)
您可以在适配器上使用ViewBinder。
像
这样的东西adapter.setViewBinder(new SimpleCursorAdapter.ViewBinder(){
public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
if(columnIndex != 2) return false; // only care about 3rd column
int duration = cursor.getInt(columnIndex) / 60 + 1;
((TextView)view).setText(String.valueOf(duration));
return true;
}
});
答案 1 :(得分:1)
在select语句中 - 而不是执行select * - 指定列 - 您可以执行以下操作: 从blah blah选择column_phone,column_name,(column_duration / 60)+ 1作为column_duration