How to override the lt;ENTERgt; key behaviour of the virtual keyboard in Android(如何覆盖 lt;ENTERgt;Android中虚拟键盘的按键行为)
问题描述
我想覆盖虚拟键盘的 ENTER 键的行为,以便:
I want to override the behaviour of the ENTER key of the virtual keyboard so that:
- 当屏幕上有更多字段时,它会制表"到下一个字段
- 当它是屏幕的最后一个字段时,它执行屏幕的默认动作
我一直在使用 IME 选项和标签,但没有得到我想要的.有人有什么建议吗?
I've been playing with the IME options and labels, but just don't get what I want. Anybody have any suggestions?
推荐答案
在另一个论坛的帮助下,我找到了方法.
With help on another forum, I found the way to do it.
为了使其可重用,我创建了自己的超级对话框类,其中包含 2 个 OnKeyListener
对象和一个抽象提交方法:
To make it reusable, I have created my own super dialog class that contains 2 OnKeyListener
objects and an abstract submit method:
public abstract class MyAbstractDialog extends Dialog {
/**
* OnKeyListener that puts the focus down when the ENTER key is pressed
*/
protected View.OnKeyListener onEnterFocusDown = new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
(keyCode == KeyEvent.KEYCODE_ENTER)) {
v.requestFocus(View.FOCUS_DOWN);
return true;
}
return false;
}
};
/**
* OnKeyListener that submits the page when the ENTER key is pressed
*/
protected View.OnKeyListener onEnterSubmitView = new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if ((event.getAction() == KeyEvent.ACTION_DOWN) &&
(keyCode == KeyEvent.KEYCODE_ENTER)) {
submitView(v);
return true;
}
return false;
}
};
protected abstract void submitView(View v);
}
现在在 Dialog
我可以使用这些对象来设置我的字段:
Now in the Dialog
I can use these objects to set on my fields:
// make the ENTER key on passwordField1 put the focus on the next field
passwordField1.setOnKeyListener(onEnterFocusDown);
// make the ENTER key on passwordField2 submit the page
passwordField2.setOnKeyListener(onEnterSubmitView);
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本文标题为:如何覆盖 <ENTER>Android中虚拟键盘的按键


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