java - 如何将多个变量从 java Activity 传递到 java 类？

Question

我可以将字符串从 Java Activity 传递到一类库，但我无法确定如何发送多个，我需要传递三个，这里是代码:

OFActivity.java

package cc.openframeworks.androidMultiOFActivitiesExample;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import cc.openframeworks.OFAndroid;
import cc.openframeworks.androidMultiOFActivitiesExample.R.id;


public class OFActivityA extends cc.openframeworks.OFActivity{

   @Override
    public void onCreate(Bundle savedInstanceState)
    { 
        super.onCreate(savedInstanceState);

    }


    OFAndroid of = new OFAndroid("jala");




}

Android.java

public class OFAndroid {


   private static String text ;

   public OFAndroid(String text) {
      this.text = text ;
   }


   public void useText() {
      Log.e("TAG" , this.text);
   }

Answer 1

尝试使用 a) Array、b) List 或 c) Bundle

数组

OFActivity.java

public class OFActivityA extends cc.openframeworks.OFActivity{

    // onCreate()

    OFAndroid of = new OFAndroid(new String[]{"jala", "foo", "bar"});
}

Android.java

public class OFAndroid {
   private String[] textArray ;

   public OFAndroid(String[] textArray) {
      this.textArray= textArray;
   }


   public void useText() {
      for (String text : textArray) {
          Log.e("TAG" , text);
      }
   }

列表

OFActivity.java

public class OFActivityA extends cc.openframeworks.OFActivity{

    // onCreate()

    List<String> listOfString = new ArrayList<>();
    listOfString.add("jala");
    listOfString.add("foo");
    listOfString.add("bar");
    OFAndroid of = new OFAndroid(listOfString);
}

Android.java

public class OFAndroid {
   private List<String> listOfString;

   public OFAndroid(List<String> listOfString) {
      this.listOfString = listOfString;
   }


   public void useText() {
      for (String text : listOfString) {
          Log.e("TAG" , text);
      }
   }

bundle

OFActivity.java

public class OFActivityA extends cc.openframeworks.OFActivity{

    // onCreate()

    Bundle bundle = new Bundle();
    bundle.putString("keyOfString1", "jala");
    bundle.putString("keyOfString2", "foo");
    bundle.putString("keyOfString3", "bar");    
    OFAndroid of = new OFAndroid(bundle);
}

Android.java

public class OFAndroid {
   private Bundle bundle ;

   public OFAndroid(Bundle bundle) {
      this.bundle = bundle;
   }

   public void useText() {
      Log.e("TAG", bundle.getString("keyOfString1")); // jala
      Log.e("TAG", bundle.getString("keyOfString2")); // foo
      Log.e("TAG", bundle.getString("keyOfString3")); // bar
   }

顺便说一句，有什么理由在OFAndroid.java中使用静态变量吗？如果不仔细控制静态对象的生命周期和引用，很容易造成内存泄漏问题。