Question

这就是我要设置的最大行数：

#include "A.h"
A<int,int,int,int> a;
a.method1();

当第3行即将开始时，光标消失。要把它放回去，我必须点击退格键。

Answer 1

假设在文本视图中光标不会留在键盘后面。我编写了一个帮助方法，使UITextField文本滚动到文本结尾。

- (void)scrollToCaretInTextView:(UITextView *)textView animated:(BOOL)animated
{
    CGRect rect = [textView caretRectForPosition:textView.selectedTextRange.end]; //Get the content size of textview 
    rect.size.height += textView.textContainerInset.bottom;
    [textView scrollRectToVisible:rect animated:animated];
}

Answer 2

我不太确定你的期望。如果你想要最多两行，那么应该没有第三行。

使用此：

import { TestBed, async, inject } from '@angular/core/testing';
import { SignupService } from './signup.service';
import { Observable } from 'rxjs/Observable';

import { HttpModule, Http, Response, ResponseOptions, RequestOptions, Headers, XHRBackend } from '@angular/http';
import { MockBackend, MockConnection } from '@angular/http/testing';
import { ErrorHandlerService } from '../../services/error-handler.service';

describe('SignupService', () => {

  let errorStub = {};

  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [HttpModule],
      providers: [
        SignupService,
        { provide: XHRBackend, useClass: MockBackend },
        { provide: ErrorHandlerService, useValue: errorStub }
      ]
    });
  });

  it('signup should return an application error if no apps are provided', inject([SignupService], (service: SignupService) => {
    service.signup('', [], null).subscribe(
      suc => { },
      err => expect(err).toMatch(/application/)
    );
  }));

  it('signup should return a role error if no roles are provided', inject([SignupService], (service: SignupService) => {
    service.signup('', null, []).subscribe(
      suc => { },
      err => expect(err).toMatch(/rôle/)
    );
  }));

  it(
    'signup should return a response with a "contenu" parameter',
    inject([SignupService, XHRBackend], (service: SignupService, mockBackEnd: MockBackend) => {
      let content = 'anything';
      mockBackEnd.connections.subscribe((connection: MockConnection) => {
        connection.mockRespond(new Response(new ResponseOptions({
          body: JSON.stringify({
            contenu: content
          })
        })));
      });
      service.signup('', [], []).subscribe(
        suc => expect(suc).toBe(content)
      );
    }));

  it(
    'checkUser should return a response with a "contenu" parameter',
    inject([SignupService, XHRBackend], (service: SignupService, mockBackEnd: MockBackend) => {
      let content = 'anything';
      mockBackEnd.connections.subscribe((connection: MockConnection) => {
        connection.mockRespond(new Response(new ResponseOptions({
          body: JSON.stringify({
            contenu: content
          })
        })));
      });
      service.checkUser('').subscribe(
        suc => expect(suc).toBe(content)
      );
    }));
});

Limit the number of lines for UITextview

看起来你真正想要的是一个有两行高度的textview？如果是这样，请在查看控制器时尝试此操作。

self.text_description.textContainer.maximumNumberOfLines = 2
self.text_description.textContainer.lineBreakMode = .byTruncatingTail

UITextView - 设置最大行隐藏光标

2 个答案: