android 获取视频,图片缩略图的具体实现
1、获取视频缩略图有两个方法(1)通过内容提供器来获取(2)人为创建缩略图
(1)缺点就是必须更新媒体库才能看到最新的视频的缩略图
[java]
/**
* @param context
* @param cr
* @param Videopath
* @return
*/
public static Bitmap getVideoThumbnail(Context context, ContentResolver cr, String Videopath) {
ContentResolver testcr = context.getContentResolver();
String[] projection = { MediaStore.Video.Media.DATA, MediaStore.Video.Media._ID, };
String whereClause = MediaStore.Video.Media.DATA + " = '" + Videopath + "'";
Cursor cursor = testcr.query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection, whereClause,
null, null);
int _id = 0;
String videoPath = "";
if (cursor == null || cursor.getCount() == 0) {
return null;
}
if (cursor.moveToFirst()) {
int _idColumn = cursor.getColumnIndex(MediaStore.Video.Media._ID);
int _dataColumn = cursor.getColumnIndex(MediaStore.Video.Media.DATA);
do {
_id = cursor.getInt(_idColumn);
videoPath = cursor.getString(_dataColumn);
} while (cursor.moveToNext());
}
cursor.close();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
Bitmap bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, _id, Images.Thumbnails.MINI_KIND,
options);
return bitmap;
}/**
* @param context
* @param cr
* @param Videopath
* @return
*/
public static Bitmap getVideoThumbnail(Context context, ContentResolver cr, String Videopath) {
ContentResolver testcr = context.getContentResolver();
String[] projection = { MediaStore.Video.Media.DATA, MediaStore.Video.Media._ID, };
String whereClause = MediaStore.Video.Media.DATA + " = '" + Videopath + "'";
Cursor cursor = testcr.query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection, whereClause,
null, null);
int _id = 0;
String videoPath = "";
if (cursor == null || cursor.getCount() == 0) {
return null;
}
if (cursor.moveToFirst()) {int _idColumn = cursor.getColumnIndex(MediaStore.Video.Media._ID);
int _dataColumn = cursor.getColumnIndex(MediaStore.Video.Media.DATA);
do {
_id = cursor.getInt(_idColumn);
videoPath = cursor.getString(_dataColumn);
} while (cursor.moveToNext());
}
cursor.close();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
Bitmap bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, _id, Images.Thumbnails.MINI_KIND,
options);
return bitmap;
}(2)人为创建缩略图要耗费一点时间
[java]
/**
* 获取视频缩略图
* @param videoPath
* @param width
* @param height
* @param kind
* @return
*/
private Bitmap getVideoThumbnail(String videoPath, int width , int height, int kind){
Bitmap bitmap = null;
bitmap = ThumbnailUtils.createVideoThumbnail(videoPath, kind);
bitmap = ThumbnailUtils.extractThumbnail(bitmap, width, height, ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
return bitmap;
}/**
* 获取视频缩略图
* @param videoPath
* @param width
* @param height
* @param kind
* @return
*/
private Bitmap getVideoThumbnail(String videoPath, int width , int height, int kind){
Bitmap bitmap = null;
bitmap = ThumbnailUtils.createVideoThumbnail(videoPath, kind);
bitmap = ThumbnailUtils.extractThumbnail(bitmap, width, height, ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
return bitmap;
}
2、图片缩略图
[java]
/**
*
* @param context
* @param cr
* @param Imagepath
* @return
*/
public static Bitmap getImageThumbnail(Context context, ContentResolver cr, String Imagepath) {
ContentResolver testcr = context.getContentResolver();
String[] projection = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID, };
String whereClause = MediaStore.Images.Media.DATA + " = '" + Imagepath + "'";
Cursor cursor = testcr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, whereClause,
null, null);
int _id = 0;
String imagePath = "";
if (cursor == null || cursor.getCount() == 0) {
return null;
}
if (cursor.moveToFirst()) {
int _idColumn = cursor.getColumnIndex(MediaStore.Images.Media._ID);
int _dataColumn = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
do {
_id = cursor.getInt(_idColumn);
imagePath = cursor.getString(_dataColumn);
} while (cursor.moveToNext());
}
cursor.close();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
Bitmap bitmap = MediaStore.Images.Thumbnails.getThumbnail(cr, _id, Images.Thumbnails.MINI_KIND,
options);
return bitmap;
}/**
*
* @param context
* @param cr
* @param Imagepath
* @return
*/
public static Bitmap getImageThumbnail(Context context, ContentResolver cr, String Imagepath) {
ContentResolver testcr = context.getContentResolver();
String[] projection = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID, };
String whereClause = MediaStore.Images.Media.DATA + " = '" + Imagepath + "'";
Cursor cursor = testcr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, whereClause,
null, null);
int _id = 0;
String imagePath = "";
if (cursor == null || cursor.getCount() == 0) {
return null;
}
if (cursor.moveToFirst()) {int _idColumn = cursor.getColumnIndex(MediaStore.Images.Media._ID);
int _dataColumn = cursor.getColumnIndex(MediaStore.Images.Media.DATA);do {
_id = cursor.getInt(_idColumn);
imagePath = cursor.getString(_dataColumn);
} while (cursor.moveToNext());
}
cursor.close();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
Bitmap bitmap = MediaStore.Images.Thumbnails.getThumbnail(cr, _id, Images.Thumbnails.MINI_KIND,
options);
return bitmap;
}
您可能感兴趣的文章:
- Android开发之多媒体文件获取工具类实例【音频,视频,图片等】
- Android多媒体之VideoView视频播放器
- Android多媒体教程之播放视频的四种方法
- Android开发之MediaPlayer多媒体(音频,视频)播放工具类
- Android开发实现的IntentUtil跳转多功能工具类【包含视频、音频、图片、摄像头等操作功能】
- Android中简单调用图片、视频、音频、录音和拍照的方法
- Android获取SD卡上图片和视频缩略图的小例子
- Android编程获取图片和视频缩略图的方法
- Android如何获取图片或视频略缩图
- android提取视频多张图片和视频信息实例
- Android编程实现获取多媒体库视频、音频、图片的方法
- android--获取视频,图片缩略图的具体实现
- android 获取视频,图片缩略图的具体实现
- Android系统详解之获取图片和视频的缩略图
- Android之获取手机上的图片和视频缩略图thumbnails
- android获取图片和视频的缩略图
- Android 获取SDCard上图片和视频的缩略图
- android 获取视频和图片的缩略图
- android获取手机上的图片和视频缩略图thumbnails
- Android之如何获取视频或者图片的缩略图
- 获取Android手机上的图片和视频缩略图
- Android获取SD卡上图片和视频缩略图的小例子
- android获取手机上的图片和视频缩略图thumbnails(转)
- Android 获取SDCard上图片和视频的缩略图
- Android 获取SDCard上图片和视频的缩略图
- Android 获取SDCard上图片和视频的缩略图
- Android系统详解之获取图片和视频的缩略图
- Android 获取SDCard上图片和视频的缩略图
- [Android算法] 实现获取视频的缩略图(ThumbnailUtils),并且播放
- Android系统详解之获取图片和视频的缩略图
- 获取Android手机的图片和视频的缩略图[转]