我所遇到的一個巧妙的解決辦法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;
}
}
,只需將此過濾器應用於編輯文本像這樣:
mCentsEditText = (EditText)v.findViewById(R.id.cents_edit_text);
InputFilterMinMax filter = new InputFilterMinMax("0", "99") {};
mCentsEditText.setFilters(new InputFilter[]{filter});
閱讀這個問題幾次後,它的不清楚在用戶打字時或在離開現場後你是否希望驗證和編輯輸入。在這兩種情況下,你都有兩個答案。 – Devunwired 2011-03-22 13:19:19