Question

我是android的新手，我刚刚制作了一个List。当您单击列表视图项时，它应该打开一个新页面，让我们说标准的“Hello world”页面。但我不知道如何创造这个。

Mainactivity.java

package pcsalt.example.customlistviewdemo;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.widget.ListView;

public class MainActivity extends Activity  {

ListView lvDetail;
Context context = MainActivity.this;
ArrayList<ListData> myList = new ArrayList<ListData>();

String[] title = new String[] {
        "Above & Beyond", "Afrojack", "DJ 3", "DJ 4",
        "DJ 5", "DJ 6", "DJ 7", "DJ 8"
};
String[] desc  = new String[] {
        "56:58", "58:49", "60:00", "60:00",
        "60:00", "60:00", "60:00", "60:00"
};
int[]    img   = new int[]    {
        R.drawable.star3, R.drawable.star3, R.drawable.star3, R.drawable.star3,
        R.drawable.star3, R.drawable.star3, R.drawable.star3, R.drawable.star8
};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    lvDetail = (ListView) findViewById(R.id.lvCustomList);
    // insert data into the list before setting the adapter
    // otherwise it will generate NullPointerException  - Obviously
    getDataInList();
    lvDetail.setAdapter(new MyBaseAdapter(context, myList));
}

private void getDataInList() {
    for(int i=0;i<8;i++) {
        // Create a new object for each list item
        ListData ld = new ListData();
        ld.setTitle(title[i]);
        ld.setDescription(desc[i]);
        ld.setImgResId(img[i]);
        // Add this object into the ArrayList myList
        myList.add(ld);
    }

}

}

您能否详细说明我需要添加的内容？（还有新的xml / java文件）。谢谢。

Answer 1

试试这个：

lvDetail.setOnItemClickListener(new OnItemClickListener() 
    {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) 
        {
            Intent i = new Intent();
            i.putExtra("position", arg2+"");

            startActivity(i);
        }

    });

单击列表视图时打开新的空白页面

1 个答案: