如何使庫項目的方法在android的另一個項目中工作？

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我有我試圖在另一個新項目中使用的項目，我現有的項目的Java代碼是在這裏：如何使庫項目的方法在android的另一個項目中工作？

package com.powergroup.splitview; 

import android.content.Intent; 
import android.graphics.Color; 
import android.os.Bundle; 
import android.support.v4.app.FragmentActivity; 
import android.view.View; 
import android.view.Window; 
import android.view.WindowManager; 
import android.widget.Button; 
import android.widget.LinearLayout; 
import android.widget.LinearLayout.LayoutParams; 
import android.widget.TextView; 

public class SplitviewActivity extends FragmentActivity implements 
     Left.OnButtonClickListener { 

    LinearLayout LEFT, RIGHT, leftfragmentln, rightfragmentln; 
    Right rightFr; 
    Left leftFr; 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     //reduced the Gray Bar 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       WindowManager.LayoutParams.FLAG_FULLSCREEN); 


     setContentView(R.layout.main); 
     // initializes the objects 
     initializer(); 

     // sets the size of the two sides, give the ration here 
     setSize(20, 80); 
     // sets the colour of the two sides 
     setColor(Color.BLUE, Color.RED); 

    } 

    public void initializer() { 
     LEFT = (LinearLayout) findViewById(R.id.lnLeft); 
     RIGHT = (LinearLayout) findViewById(R.id.lnRight); 
     leftfragmentln = (LinearLayout) findViewById(R.id.lnLeftFragment); 
     rightfragmentln = (LinearLayout) findViewById(R.id.lnRightFragment); 
     rightFr = (Right) getSupportFragmentManager().findFragmentById(
       R.id.view_right); 
     leftFr = (Left) getSupportFragmentManager().findFragmentById(
       R.id.view_left); 

    } 

    public void setColor(int leftColor, int rightColor) { 

     // for landscape mode 
     if ((rightFr != null) && rightFr.isInLayout() && (leftFr != null) 
       && leftFr.isInLayout()) { 

      LEFT.setBackgroundColor(leftColor); 
      RIGHT.setBackgroundColor(rightColor); 
     } else { 
      // for portrait mode 
      RIGHT.setBackgroundColor(rightColor); 

     } 

    } 

    public void setSize(float leftsize, float rightsize) { 

     // for landscape mode 
     if ((rightFr != null) && rightFr.isInLayout() && (leftFr != null) 
       && leftFr.isInLayout()) { 

      android.widget.LinearLayout.LayoutParams par1 = (LayoutParams) LEFT 
        .getLayoutParams(); 

      android.widget.LinearLayout.LayoutParams par2 = (LayoutParams) RIGHT 
        .getLayoutParams(); 
      par1.weight = rightsize; 
      par2.weight = leftsize; 

     } 

    } 

    // a method to add view in a blank xml programatically 
    public void setView(View leftView, View rightView) { 
     if ((rightFr != null) && rightFr.isInLayout() && (leftFr != null) 
       && leftFr.isInLayout()) { 
      leftfragmentln.addView(leftView); 
      rightfragmentln.addView(rightView); 
     } else { 

      rightfragmentln.addView(rightView); 

     } 
    } 

    @Override 
    public void onClickButton(String s) { 

     if ((rightFr != null) && rightFr.isInLayout()) { 
      rightFr.setText(s); 
     } else { 
      Intent intent = new Intent(this, RightActivity.class); 
      intent.putExtra("value", s); 
      startActivity(intent); 
     } 

    } 

}

我在上面的代碼做成一個庫，並試圖在我的另一個項目中使用，其中i可以使用上面的方法。我該怎麼辦？ Plz幫助

來源

2012-03-30 Sabbir Ahmed