Android IME，在EditText中设置光标位置 [英] Android IME, set cursor position in EditText

问题描述

我正在使用软键盘，需要在IME编辑文本中设置光标位置.

I am working on soft keyboard where I need to set the cursor position in IME edit text.

如上图所示，我已经创建了软键盘，因为我们可以看到在编辑文本和当前光标位置中输入了一些文本(由蓝色指示器显示).

As shown in above image, I had created soft keyboard, as we can see some text is entered in edit text and current cursor position(shown by blue indicator).

我需要将光标位置设置在当前行的末尾(在我们的示例中，该行的末尾首先由图像中的红色显示)

I need to set the cursor position at the end of the current line (in our case at the end of the line first shown by red color in image)

我尝试使用InputConnection提供的不同功能，

I have tried with different functions provided with InputConnection, I tried with,

CharSequence seq = conn.getTextBeforeCursor(1000, 0);     // will get as much characters as possible on the left of cursor

还有一件事，我还需要计算编辑文本中的行数(在我们的例子中是两行).

And one more thing, I also need to count to the number of lines in edit text (in our case it's two).

推荐答案

朋友们感谢您的赞赏.两天前我得到了我的 解决方案，但无法更新我的答案.

Hi friends thanks for appreciation. Before two days I got my solution but can't able to update my answer.

为此，我在下面的代码中使用了

For that I used below code,

如果我们使用的API版本大于10，

If we are using api version greater than 10,

sendDownUpKeyEvents(0x0000007b);

因为此方法是在api 11中添加的.

because this method is added in api 11.

如果我们使用的API版本小于11，

If we are using api version less than 11,

if (getCurrentInputConnection() != null) {
                    CharSequence textAfter = getCurrentInputConnection().getTextAfterCursor(1024, 0);
                    if (!TextUtils.isEmpty(textAfter)) {
                        int newPosition = 1;
                        while (newPosition < textAfter.length()) {
                            char chatAt = textAfter.charAt(newPosition);
                            if (chatAt == '\n' || chatAt == '\r') {
                                break;
                            }
                            newPosition++;
                        }
                        if (newPosition > textAfter.length())
                            newPosition = textAfter.length();
                        try {
                            CharSequence textBefore = getCurrentInputConnection().getTextBeforeCursor(Integer.MAX_VALUE, 0);
                            if (!TextUtils.isEmpty(textBefore)) {
                                newPosition = newPosition + textBefore.length();
                            }
                            getCurrentInputConnection().setSelection(newPosition, newPosition);
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                }

这篇关于Android IME，在EditText中设置光标位置的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！