Question

我试图在编辑文本上实现过滤器，我需要过滤非数字字符和点。我可以使用编辑文本或输入类型的数字标签，但似乎设备之间存在细微差别，就像有设备显示点字符，即使您在EditText中过滤它们。

这里是afterTextChanged方法

if(isEditing) return;
            Log.v("Information", "last: " + s.charAt(s.length()-1));
            Log.v("Information", "Full string before: " + s.toString());
            if(s.charAt(s.length()-1) == '.') {
                Log.v("Information", "DOT!");
                isEditing = true;
                String currentText = s.toString().replace(".", "");
                s.replace(0, s.length(),  currentText);
                isEditing = false;
                Log.v("Information", "Full string after: " + s.toString());
                return;
            }
            else if(!Character.isDigit(s.charAt(s.length()-1))) {
                Log.v("Information", "NOT DIGIT!");
                isEditing = true;
                String currentText = "";
                if(s.length() > 1)
                    currentText = s.toString().substring(0, s.length()-1);
                s.replace(0, s.length(), currentText);
                isEditing = false;
                Log.v("Information", "Full string after: " + s.toString());
                return;
            }

这是输出

last: 6
Full string before: 6
Full string after: 6
last: 6
Full string before: 66
Full string after: 66
last: h
Full string before: 66h
NOT DIGIT!
Full string after: 66
last: h
Full string before: 66hh
NOT DIGIT!
Full string after: 66h

正如你所看到的，在我删除第一个＆＃39; h＆＃39;后，当我输入另一个h时，字符串变为＆＃34; 66hh＆＃34;它应该在哪里＆＃34; 66h＆＃34;因为我已经删除了第一个h。是什么原因可以阻止我对可编辑的s进行更改？

编辑：忘了提，这里是我的EditText

 <core.globals.views.EditTextWithCursorWatcher
                    android:id="@+id/edittext"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="8"
                    android:background="@null"
                    android:ellipsize="end"
                    android:gravity="right"
                    android:hint="0,00"
                    android:maxLength="15"
                    android:paddingLeft="5dp"
                    android:paddingRight="5dp"
                    android:singleLine="true"
                    android:text="0,00"
                    android:textColor="#ff414141"
                    android:textColorHint="#ff414141"
                    android:textSize="16sp" />

Answer 1

我只是使用自定义Inputfilter创建工作演示。试试这个

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final EditText edtText = (EditText) findViewById(R.id.edtText);

        InputFilter filter = new InputFilter() {

            @Override
            public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {

                try {
                    if (!Character.isDigit(source.charAt(0))) {
                        if (source.equals(",")) {
                            if (dend == 0) {
                                return "";
                            } else {
                                if (("" + edtText.getText().toString().charAt(edtText.getText().toString().length() - 1)).equals(",")) {
                                    return "";
                                } else {
                                    return null;
                                }
                            }
                        } else {
                            return "";
                        }
                    }
                } catch (Exception e) {
                }
                return null;
            }
        };
        edtText.setFilters(new InputFilter[] { filter });

    }

TextTeatcher更改onTextChanged中的Editable不会影响Editable本身

1 个答案: