大家好,有一個應用程序,可以在SD卡上保存音頻.我創建了一個listview,它從sdcard中檢索文件名.我正在嘗試設置一個監聽器,所以當單擊文件名時,我可以啟動另一個播放該文件的意圖.當我嘗試設置監聽器并傳入一個新的OnItemClickListener()時,

eclipse是紅色的下劃線.我知道我必須實現onItemclick(),這是我認為應該去的地方.有任何想法嗎？

謝謝

碼：

package com.tecmark;

import java.io.File;

import java.util.ArrayList;

import android.app.Activity;

import android.os.Bundle;

import android.os.Environment;

import android.util.Log;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.AdapterView.OnItemSelectedListener;

public class SdGetList extends Activity {

private ListView lv1;

private String[] lv_arr;

private ArrayList arr;

@Override

public void onCreate(Bundle icicle) {

super.onCreate(icicle);

setContentView(R.layout.listlayout);

arr = new ArrayList();

File sdCardRoot = Environment.getExternalStorageDirectory();

Log.i("root on sd =", ""+ sdCardRoot.getPath());

for (File f : sdCardRoot.listFiles()) {

if (f.isFile()){

String name = f.getName();

arr.add(name);

Log.i("arr is empty?******", ""+arr.isEmpty());

}

else {

Log.i("file", " no file");

}

Log.i("arr******", ""+arr.size());

}

lv_arr = new String[arr.size()];

for(int i=0 ; i

lv_arr[i] = arr.get(i);

}

lv1=(ListView)findViewById(R.id.ListView01);

// By using setAdpater method in listview we an add string array in list.

lv1.setAdapter(new ArrayAdapter(this,android.R.layout.simple_list_item_1 , lv_arr));

lv1.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView> parent, View view, int position, long id) {

}

} );

}

}