EditText智能限制小数点前后分别保留几位
需求
- 可以分别限制小数点前面几位，和小数点后几位
- 首位输入0时，第二位只能输入小数点
- 首位输入小数点，默认显示0.
- 嘻嘻!
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public static void setEditTextLimit(final int frontPoint, final int behindPoint, final EditText... editTexts) {
if (editTexts != null && editTexts.length > 0) {
for (final EditText editText : editTexts) {
editText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
if (s.length() == frontPoint + 1 && !s.toString().contains(".")) {
editText.setText(s.toString().substring(0, frontPoint));
editText.setSelection(frontPoint);
}
if (editText.getText().toString().indexOf(".") >= 0) {
if (editText.getText().toString().indexOf(".", editText.getText().toString().indexOf(".") + 1) > 0) {
editText.setText(editText.getText().toString().substring(0, editText.getText().toString().length() - 1));
editText.setSelection(editText.getText().toString().length());
}
}
if (s.toString().contains(".")) {
if (s.length() - 1 - s.toString().indexOf(".") > behindPoint) {
s = s.toString().subSequence(0,
s.toString().indexOf(".") + behindPoint+1);
editText.setText(s);
editText.setSelection(s.length());
}
}
if (s.toString().trim().substring(0).equals(".")) {
s = "0" + s;
editText.setText(s);
editText.setSelection(2);
}
if (s.toString().startsWith("0")
&& s.toString().trim().length() > 1) {
if (!s.toString().substring(1, 2).equals(".")) {
editText.setText(s.subSequence(0, 1));
editText.setSelection(1);
return;
}
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
}
}
|
xml别忘了
1
| android:inputType="numberDecimal"
|
