android EditText获取光标位置

int index = editText.getSelectionStart();

1、在光标处插入字符：

int index = editText.getSelectionStart();
Editable editable = editText.getText();
editable.insert(index, "xyz");

2、删除光标前字符：

int index = editText.getSelectionStart();
Editable editable = editText.getText();
editable.delete(index-1, index);

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