Question

我在“aa_bb_cc”中有一个字符串。我想将它转换为单个字符串“aa bb cc”，每个字符串之间的空格为aa，bb和cc。我怎样才能做到这一点？？感谢。

Answer 1

您可以使用：

 str = [str stringByReplacingOccurrencesOfString:@"_"
                                     withString:@" "];

Answer 2

NSString* newString = [oldString stringByReplacingOccurencesOfString:@"_" withString:@" "];

Apple Documentation

- (NSString *)stringByReplacingOccurrencesOfString:(NSString *)target withString:(NSString *)replacement

Answer 3

使用NSString的 stringByReplacingOccurrencesOfString

 NSString *str = @"aa_bb_cc";
 [str stringByReplacingOccurrencesOfString:@"_" withString:@""];

Answer 4

[str replaceOccurrencesOfString:@"_" withString:@" " options:NSLiteralSearch range:NSMakeRange(0, [str length])];

Answer 5

Swift 4.2

@Override
protected void adjustForNumColumns(int numColumns) {
    ((GridData) c_top.getLayoutData()).horizontalSpan = numColumns;
}

@Override
protected void doFillIntoGrid(Composite parent, int numColumns) {

    /* Layout comments:
     * 
     * component are sequentially filled into numColumns
     * by default each component will use 1 column
     * GridData can be set to use more that one columns
     */

    GridData gd = new GridData(SWT.FILL, SWT.TOP, true, false);
    gd.horizontalSpan = numColumns;

    c_top = parent;
    c_top.setLayoutData(gd);

    c_group = new Composite(c_top, SWT.BORDER);

    GridLayout newgd = new GridLayout(2, false);
    c_group.setLayout(newgd);
    c_group.setLayoutData(gd);

    // kernel spec combo

    Label comboLabel = new Label(c_group, SWT.NONE);
    comboLabel.setText("Select kernel");
    gd = new GridData(SWT.LEFT, SWT.TOP, false, false);
    gd.horizontalSpan = numColumns - 1;
    comboLabel.setLayoutData(gd);

    c_kernelCombo = new Combo(c_group, SWT.READ_ONLY);
    gd = new GridData(SWT.FILL, SWT.TOP, true, false);
    //gd.horizontalSpan = 1;
    c_kernelCombo.setLayoutData(gd);     
}

Answer 6

Swift 2.2：

let input = "upload_FfAPfl-icon.png"

let output = input.stringByReplacingOccurrencesOfString("_", withString: "") // "uploadFfAPfl-icon.png"

从字符串中删除下划线

6 个答案: