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public Form(Context context) {
...
}

package ua.org.zasadnyy.zvalidations.validations;

import android.content.Context;
import android.widget.EditText;
import ua.org.zasadnyy.zvalidations.Field;
import ua.org.zasadnyy.zvalidations.R;
import ua.org.zasadnyy.zvalidations.ValidationResult;

/**
 * Created by vitaliyzasadnyy on 04.08.13.
 */
public class InRangeNotStrict extends BaseValidation {

    private Integer mMin;
    private Integer mMax;

    private InRangeNotStrict(Context context, Integer min, Integer max) {
        super(context);
        mMin = min;
        mMax = max;
    }

    public static Validation build(Context context, Integer min, Integer max) {
        return new InRangeNotStrict(context, min, max);
    }

    @Override
    public ValidationResult validate(Field field) {
        EditText textView = field.getTextView();
        boolean isValid = false;
        try {
            int value = Integer.parseInt(textView.getText().toString());
            isValid = (mMin == null || value >= mMin) && (mMax == null || value <= mMax);
        } catch (NumberFormatException ignored) {
        }
        return isValid ?
                ValidationResult.buildSuccess(textView)
                : ValidationResult.buildFailed(textView, mContext.getString(
                mMin == null ?
                        R.string.zvalidations_not_in_range_max
                        : (mMax == null ?
                        R.string.zvalidations_not_in_range_min
                        : R.string.zvalidations_not_in_range
                ), mMin, mMax
        ));
    }
}