提起Android的EditText的光标选择问题,可以通过android.text.Selection包提供的方法来实现,Android SDK提供了有关光标选择的多种方法,比如说getSelectionEnd、getSelectionStart、removeSelection、selectAll、setSelection,详细的参数声明如下:
final static int getSelectionEnd(CharSequence text)
Return the offset of the selection edge or cursor, or -1 if there is no selection or cursor.
final static int getSelectionStart(CharSequence text)
Return the offset of the selection anchor or cursor, or -1 if there is no selection or cursor.
final static void removeSelection(Spannable text)
Remove the selection or cursor, if any, from the text.
final static void selectAll(Spannable text)
Select the entire text.
final static void setSelection(Spannable text, int index)
Move the cursor to offset index.
static void setSelection(Spannable text, int start, int stop)
Set the selection anchor to start and the selection edge to stop.
Editable ea= etEdit.getText(); //etEdit为EditText
Selection.setSelection(ea, ea.length()-1); // Android开发网提示这里ea的长度必须大于1。否则会有异常发生
本文深入探讨了Android SDK中EditText光标选择的相关方法,包括如何获取光标位置、清除选择、全选文本以及设置光标位置。通过示例代码展示了如何利用android.text.Selection包进行光标操作。
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