使用managedQuery()獲取Android設備的視頻媒體內容

本程序演示如何使用managedQuery()方法, 從媒體存儲(MediaStore)獲取Android設備的視頻媒體內容. 把Uri設定為 MediaStore.Video.Media.EXTERNAL_CONTENT_URI, 排序設定為 MediaStore.Video.Media.TITLE.

package com.AndroidMediaList;

import android.app.ListActivity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.widget.ListAdapter;
import android.widget.SimpleCursorAdapter;

public class AndroidMediaListActivity extends ListActivity {
 
 //For Video
 Uri targetUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
 String sortOrder = MediaStore.Video.Media.TITLE;
 //For Audio
 //Uri targetUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
 //String sortOrder = MediaStore.Audio.Media.TITLE;
 
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   
   String[] from = {MediaStore.MediaColumns.TITLE};
   int[] to = {android.R.id.text1};
  
      Cursor cursor = managedQuery(targetUri, null, null, null, sortOrder);
    
      ListAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1, cursor, from, to);
      setListAdapter(adapter);
  }
}