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获取图片缩略图:
byte[] imageByte=getImageFromURL(urlPath.trim());
//以下是把图片转化为缩略图再加载
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeByteArray(imageByte, 0, imageByte.length); <SPAN style="LINE-HEIGHT: 25px; FONT-FAMILY: Helvetica, Tahoma, Arial, sans-serif; WHITE-SPACE: normal; FONT-SIZE: 14px"> //此时返回bitmap为空 </SPAN>
options.inJustDecodeBounds = false;
int be = (int)(options.outHeight / (float)200);
if (be <= 0){
be = 1;
}
options.inSampleSize = be;
return BitmapFactory.decodeByteArray(imageByte, 0, imageByte.length,options); //返回缩略图
byte[] imageByte=getImageFromURL(urlPath.trim());
//以下是把图片转化为缩略图再加载
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeByteArray(imageByte, 0, imageByte.length); //此时返回bitmap为空
options.inJustDecodeBounds = false;
int be = (int)(options.outHeight / (float)200);
if (be <= 0){
be = 1;
}
options.inSampleSize = be;
return BitmapFactory.decodeByteArray(imageByte, 0, imageByte.length,options); //返回缩略图
获取视频缩略图:
/**
* 根据视频Uri地址取得指定的视频缩略图
* @param cr
* @param uri 本地视频Uri标示
* @return 返回bitmap类型数据
*/
public static Bitmap getVideoThumbnail(ContentResolver cr, Uri uri) {
Bitmap bitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Cursor cursor = cr.query(uri,new String[] { MediaStore.Video.Media._ID }, null, null, null);
if (cursor == null || cursor.getCount() == 0) {
return null;
}
cursor.moveToFirst();
String videoId = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media._ID)); //image id in image table.s
if (videoId == null) {
return null;
}
cursor.close();
long videoIdLong = Long.parseLong(videoId);
bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, videoIdLong,Images.Thumbnails.MICRO_KIND, options);
return bitmap;
}
Bitmap bitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Cursor cursor = cr.query(uri,new String[] { MediaStore.Video.Media._ID }, null, null, null);
if (cursor == null || cursor.getCount() == 0) {
return null;
}
cursor.moveToFirst();
String videoId = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media._ID)); //image id in image table.s
if (videoId == null) {
return null;
}
cursor.close();
long videoIdLong = Long.parseLong(videoId);
bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, videoIdLong,Images.Thumbnails.MICRO_KIND, options);
return bitmap;
} /**
* 根据视频在手机中的地址路径取得指定的视频缩略图
* @param cr
* @param fileName 本地视频地址
* @return 返回bitmap类型数据
*/
public static Bitmap getVideoThumbnail(ContentResolver cr, Uri uri) {
Bitmap bitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Cursor cursor = cr.query(uri,new String[] { MediaStore.Video.Media._ID }, null, null, null);
if (cursor == null || cursor.getCount() == 0) {
return null;
}
cursor.moveToFirst();
String videoId = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media._ID)); //image id in image table.s
if (videoId == null) {
return null;
}
cursor.close();
long videoIdLong = Long.parseLong(videoId);
bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, videoIdLong,Images.Thumbnails.MICRO_KIND, options);
return bitmap;
}
public static Bitmap getVideoThumbnail(ContentResolver cr, Uri uri) {
Bitmap bitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Cursor cursor = cr.query(uri,new String[] { MediaStore.Video.Media._ID }, null, null, null);
if (cursor == null || cursor.getCount() == 0) {
return null;
}
cursor.moveToFirst();
String videoId = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media._ID)); //image id in image table.s
if (videoId == null) {
return null;
}
cursor.close();
long videoIdLong = Long.parseLong(videoId);
bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, videoIdLong,Images.Thumbnails.MICRO_KIND, options);
return bitmap;
}
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