区分防御层数量级差异，区分量级给出相应提示。

contacts/src/main/java/cc/winboll/studio/contacts/activities/SettingsActivity.java

@@ -200,7 +200,7 @@ public class SettingsActivity extends AppCompatActivity implements IWinBoLLActiv
             settingsModel.setDunResumeCount(Integer.parseInt(etDunResumeCount.getText().toString()));
 			
 			// 应用效果提示
-			ToastUtils.show(String.format("以下设置将在连拨%d次后接通电话。", settingsModel.getDunTotalCount()));
+			ToastUtils.show((settingsModel.getDunTotalCount() == 1)?"电话骚扰防御力几乎为0。":String.format("以下设置将在连拨%d次后接通电话。", settingsModel.getDunTotalCount()));
         }
         settingsModel.setIsEnableDun(isEnableDun);
         Rules.getInstance(this).saveDun();