if indexPath.row == 2 {
cell.contentView.backgroundColor = UIColor(red: 237/255, green: 237/255, blue: 237/255, alpha: 1)
} else{
cell.backgroundColor = UIColor.white
}
不使用cellForRowAtIndexPath和willDisplayCellsAtIndexPath方法。
答案 0 :(得分：0)
如果您想更改单元格使用public static void main(String[] args) {
int num = Math.max(1,Integer.parseInt(args[0]));
char[][] buffer = new char[num * 2][num * 2]; // The Buffer is needed
writeQ1(buffer, num);
writeQ2(buffer, num);
writeQ3(buffer, num);
writeQ4(buffer, num);
printBuffer(buffer);
}
// With a buffer, this method is needed
public static void printBuffer(char[][] buffer) {
for (char[] cs : buffer) {
for (char c : cs) {
if (c == 0) {
System.out.print(' ');
} else {
System.out.print(c);
}
}
System.out.println();
}
}
// The next methods can be refactored!
public static void writeQ1(char[][] buffer, int num) {
for (int i = 0; i <= num; i++) {
for (int j = 0; j < i; j++) {
buffer[i][j + num] = '*';
}
}
}
public static void writeQ2(char[][] buffer, int num) {
for (int i = 0; i <= num; i++) {
for (int j = 0; j < i; j++) {
buffer[i][j + (num - i)] = '*';
}
}
}
public static void writeQ3(char[][] buffer, int num) {
for (int i = 0; i <= num; i++) {
for (int j = 0; j < i; j++) {
buffer[2*num - i][j + (num - i)] = '*';
}
}
}
public static void writeQ4(char[][] buffer, int num) {
for (int i = 0; i <= num; i++) {
for (int j = 0; j < i; j++) {
buffer[2*num - i][j + num] = '*';
}
}
}
的背景颜色。
但如果您仍想使用cell.backgroundColor，请务必向红色，绿色和蓝色提供contentView.backgroundColor值。只需将float替换为cell.contentView.backgroundColor = UIColor(red: 237/255, green: 237/255, blue: 237/255, alpha: 1)
答案 1 :(得分：0)
如果您对单元格的内容视图有其他观点，则无论如何都不会显示内容视图背景。