Android的运行时错误" java.lang.NoClassDefFoundError的:org.apache.commons.collections.CollectionUtils" [英] Android Runtime Error "java.lang.NoClassDefFoundError: org.apache.commons.collections.CollectionUtils "
问题描述
我想在Android中使用org.apache.commons.collections.CollectionUtils。样品低于
I am trying to use org.apache.commons.collections.CollectionUtils in Android. The sample is below
import java.util.ArrayList;
import org.apache.commons.collections.CollectionUtils;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class CheckCommonsActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String email1 = "xyz@gmail.com";
String email2 = "abc@gmail.com";
String email3 = "mnp@gmail.com";
String email4 = null;
ArrayList<String> emailList1 = new ArrayList<String>();
emailList1.add(email4);
emailList1.add(email1);
emailList1.add(email2);
emailList1.add(email3);
ArrayList<String> emailList2 = new ArrayList<String>();
emailList2.add(email3);
emailList2.add(email2);
emailList2.add(email1);
boolean isEqual = CollectionUtils.isEqualCollection(emailList1,
emailList2);
TextView text = (TextView) findViewById(R.id.text);
text.setText(String.valueOf(isEqual));
}
}
我已经导入commons-collections提供-3.2.1.jar构建Android项目的路径,但我得到的错误 java.lang.NoClassDefFoundError的:org.apache.commons.collections.CollectionUtils
在运行时。
EDIT1
感谢
推荐答案
您必须把库/库(而不是/ lib)中的文件夹你的Android项目
You have to put the library in /libs (not /lib) folder of your android project
编辑:我是假设你把它放在/ lib文件夹中,因为这是一个常见的故障。在您添加的截图可以看出,包括你的lib外部罐子。 Anyway..whether你把它放在/ lib或外部罐子的解决方案是相同的:创建/ libs文件夹,把LIB有
I was assuming that you put it in /lib folder because this is a common failure. In your added screenshot can be seen that you included the lib as external jar. Anyway..whether you put it in /lib or as external jar the solution is the same: create /libs folder and put the lib there
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