從外部jar文件導入的類無法解析的類型錯誤

我正在使用模糊邏輯創建一個android應用程序。我已經通過將它添加到lib文件夾中導入了jar庫。從外部jar文件導入的類無法解析的類型錯誤

但是，引用這些庫的類顯示錯誤「無法解析爲類型」「。

我試過了解決方案，classes from android project library not resolved in android project。但它對我並不起作用，而clean-refresh-build方法也沒用。

代碼：

import java.sql.Savepoint; 

import com.fuzzylite.*; 
import com.fuzzylite.defuzzifier.*; 
import com.fuzzylite.factory.*; 
import com.fuzzylite.hedge.*; 
import com.fuzzylite.imex.*; 
import com.fuzzylite.norm.*; 
import com.fuzzylite.norm.s.*; 
import com.fuzzylite.norm.t.*; 
import com.fuzzylite.rule.*; 
import com.fuzzylite.term.*; 
import com.fuzzylite.variable.*; 

import android.app.Activity; 
import android.os.Bundle; 
import android.widget.EditText; 
import android.widget.RatingBar; 
import android.widget.SeekBar; 
import android.widget.TextView; 

private void fuzzy(){ 
    Engine engine = new Engine(); 
    engine.setName("Mamdani-Tip-Calculator"); 

    InputVariable inputVariable1 = new InputVariable(); 
    inputVariable1.setEnabled(true); 
    inputVariable1.setName("FoodQuality"); 
    inputVariable1.setRange(1.000, 10.000); 
    inputVariable1.addTerm(new Trapezoid("Bad", 0.000, 1.000, 3.000, 7.000)); 
    inputVariable1.addTerm(new Trapezoid("Good", 3.000, 7.000, 10.000, 11.000)); 
    engine.addInputVariable(inputVariable1); 

    InputVariable inputVariable2 = new InputVariable(); 
    inputVariable2.setEnabled(true); 
    inputVariable2.setName("Service"); 
    inputVariable2.setRange(1.000, 10.000); 
    inputVariable2.addTerm(new Trapezoid("Bad", 0.000, 1.000, 3.000, 7.000)); 
    inputVariable2.addTerm(new Trapezoid("Good", 3.000, 7.000, 10.000, 11.000)); 
    engine.addInputVariable(inputVariable2); 

    OutputVariable outputVariable = new OutputVariable(); 
    outputVariable.setEnabled(true); 
    outputVariable.setName("Tip"); 
    outputVariable.setRange(0.000, 30.000); 
    outputVariable.fuzzyOutput().setAccumulation(new AlgebraicSum()); 
    outputVariable.setDefuzzifier(new Centroid(200)); 
    outputVariable.setDefaultValue(Double.NaN); 
    outputVariable.setLockValidOutput(false); 
    outputVariable.setLockOutputRange(false); 
    outputVariable.addTerm(new Gaussian("AboutTenPercent", 10.000, 2.000)); 
    outputVariable.addTerm(new Gaussian("AboutFifteenPercent", 15.000, 2.000)); 
    outputVariable.addTerm(new Gaussian("AboutTwentyPercent", 20.000, 2.000)); 
    engine.addOutputVariable(outputVariable); 

    RuleBlock ruleBlock = new RuleBlock(); 
    ruleBlock.setEnabled(true); 
    ruleBlock.setName(""); 
    ruleBlock.setConjunction(new AlgebraicProduct()); 
    ruleBlock.setDisjunction(new Maximum()); 
    ruleBlock.setActivation(new Minimum()); 
    ruleBlock.addRule(Rule.parse("if FoodQuality is Bad and Service is Bad then Tip is AboutTenPercent", engine)); 
    ruleBlock.addRule(Rule.parse("if FoodQuality is Bad and Service is Good then Tip is AboutFifteenPercent", engine)); 
    ruleBlock.addRule(Rule.parse("if FoodQuality is Good and Service is Bad then Tip is AboutFifteenPercent", engine)); 
    ruleBlock.addRule(Rule.parse("if FoodQuality is Good and Service is Good then Tip is AboutTwentyPercent", engine)); 
    engine.addRuleBlock(ruleBlock); 


}

截圖：

The imported libraries do not seem to have a problem.

The classes cannot be resolved to a type

來源

2014-10-09 Ankit Bansal

如果您導入單個類而不是包，是否有任何更改？即。導入com.fuzzylite.Engine而不是com.fuzzylite。* – Giovanni 2014-10-09 09:13:02

您保存並自動構建嗎？.... sry – user2504380 2014-10-09 09:15:15

@ user2504380 - 是的，我試過保存和自動構建，但沒有結果。 – 2014-10-09 13:37:21