[英]Xamarin Android Editext wrapped text
I have a multine edittet control and need to get the text of this control with a carriage return. 我有一个multine edittet控件,需要使用回车符来获取此控件的文本。 The problem is that i do not know where the text is wrapped. 问题是我不知道文本在哪里包装。 Is ther a possibility to get the text formatted as seen in the control? 是否有可能获得控件中所见格式的文本? Or is there a OnWrapped event so that i can append then the /r/n on my own? 还是有一个OnWrapped事件,以便我可以自己附加/ r / n?
Thank you! 谢谢!
I found a dirty possibility which does nearly what I need 我发现一个肮脏的可能性几乎可以满足我的需求
public sealed class CustomEditText : EditText
{
private int _prevLineCounter = 1;
public static bool DelIsPressed { get; set; }
private CustomEditText(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
{
}
public CustomEditText(Context context) : base(context)
{
BeforeTextChanged += CustomEditText_BeforeTextChanged;
SetOnKeyListener(new KeyListner());
}
private void CustomEditText_BeforeTextChanged(object sender, TextChangedEventArgs e)
{
// not loaded yet
if (LineCount == 0)
return;
if (DelIsPressed)
{
DelIsPressed = false;
return;
}
// text got wrapped
if (_prevLineCounter < LineCount)
{
_prevLineCounter = LineCount;
// find last space an enter carriage return
int spaceIndex = Text.LastIndexOf(' ');
// just one long string
if (spaceIndex == -1)
spaceIndex = Text.Length - 2;
Text = Text.Insert(spaceIndex, "\r\n");
// set cursor to the end
SetSelection(Text.Length);
}
_prevLineCounter = LineCount;
}
public CustomEditText(Context context, IAttributeSet attrs) : base(context, attrs)
{
}
public CustomEditText(Context context, IAttributeSet attrs, int defStyleAttr) : base(context, attrs,
defStyleAttr)
{
}
public CustomEditText(Context context, IAttributeSet attrs, int defStyleAttr, int defStyleRes) : base(context,
attrs, defStyleAttr, defStyleRes)
{
}
}
public class KeyListner: Java.Lang.Object, View.IOnKeyListener
{
public bool OnKey(View v, Keycode keyCode, KeyEvent e)
{
CustomEditText.DelIsPressed = e.KeyCode == Keycode.Del;
return false;
}
}
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