相关疑难解决方法(0)

我在android中实现了一个视频播放,对于android来说是全新的,这是我到目前为止收集的代码.

根据它应该播放视频的逻辑.不知道我哪里做错了.

package com.themetanoia.readfilefromsdc;

import java.io.File;

import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.MediaController;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.VideoView;
import android.widget.AdapterView.OnItemClickListener;

public class ReadFileFromSDCActivity extends ListActivity {
    /** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

        //Get the file path for external storage
        String a = Environment.getExternalStorageDirectory().getAbsolutePath();
        final String finalPath = a+"/Videos";
        //Define new …