onItemClick，意图，startActivity错误 [英] onItemClick, Intent, startActivity errors

问题描述

我的code：

package elf.app;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import elf.app.entity.ELFList;
import elf.app.entity.Entry;
import elf.app.test.FakeComm;

// TODO Kunna skicka att något är färdigt (ett rum är städat).

public class RoomListActivity extends ListActivity {
private ELFList eList;
//  private FakeComm fakecomm;
private Bundle extras;

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

    this.extras = getIntent().getExtras();
    eList = new ELFList();

//      fakecomm = new FakeComm();
//      eList.add(fakecomm.getData());

    String[] strArr = {"asd","sdf","dfg"};
    eList.add(strArr);

    String[] str = eList.returnNames();


    setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, str));

    ListView lv = getListView();
    lv.setTextFilterEnabled(true);

    lv.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

            Entry e = eList.getEntry(position);
            String roominfo = e.toString();


            Intent intent = new Intent(this, RoomInfoActivity.class);
            intent.putExtra("entry",roominfo);
            this.startActivity(intent);

                // old stuff
            // String message;
            // message = eList.getEntryInfo(position);
            // Toast.makeText(getApplicationContext(),
            // message, Toast.LENGTH_SHORT).show();
        }
    });
}

}

我收到错误在下面几行：

I'm getting errors at the following lines:

Intent intent = new Intent(this, RoomInfoActivity.class);

和

this.startActivity(intent);

我没有太多的线索，为什么我得到这些错误，在编辑这些错误的确切输出是：

I don't have much of a clue why I get these errors, the exact output in the editor for these errors are:

• 在构造意图（新AdapterView.OnItemClickListener（）{}，类）是不确定的
• 的方法startActivity（意向）是未定义的类型新AdapterView.OnItemClickListener（）{}

我是一个Android新手，所以请考虑到这一点，但是我研究Java的大约一年。

I'm an Android newbie so please take that into consideration, however I have studied Java for about a year.

推荐答案

修正

Intent intent = new Intent(this, RoomInfoActivity.class);

到

Intent intent = new Intent(RoomListActivity.this, RoomInfoActivity.class);

这个错误是因为由这您参考OnClickListener。问题是固定的，如果你指的是活动的这。第二个错误是一样的 - 错误的参考。只是删除这，和startActivity（）方法将封闭类中被搜索。

The error is because by this you refer to OnClickListener. The problem is fixed, if you refer to the Activity's this. The second error is the same - wrong reference. Just remove this, and startActivity() method will be searched within the enclosing class too.

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