我所遇到的一个巧妙的解决办法here:
public class InputFilterMinMax implements InputFilter {
private int min, max;
public InputFilterMinMax(int min, int max) {
this.min = min;
this.max = max;
}
public InputFilterMinMax(String min, String max) {
this.min = Integer.parseInt(min);
this.max = Integer.parseInt(max);
}
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
try {
int input = Integer.parseInt(dest.toString() + source.toString());
if (isInRange(min, max, input))
return null;
} catch (NumberFormatException nfe) { }
return "";
}
private boolean isInRange(int a, int b, int c) {
return b > a ? c >= a && c <= b : c >= b && c <= a;
}
}
,只需将此过滤器应用于编辑文本像这样:
mCentsEditText = (EditText)v.findViewById(R.id.cents_edit_text);
InputFilterMinMax filter = new InputFilterMinMax("0", "99") {};
mCentsEditText.setFilters(new InputFilter[]{filter});
阅读这个问题几次后,它的不清楚在用户打字时或在离开现场后你是否希望验证和编辑输入。在这两种情况下,你都有两个答案。 – Devunwired 2011-03-22 13:19:19