/// 取视频
-(void)getAllVideo
{
library = [[ALAssetsLibrary alloc] init];
//监测是否可用
ALAssetsLibraryAccessFailureBlock failureblock =
^(NSError *myerror)
{
NSLog(@"相册访问失败 =%@", [myerror localizedDescription]);
if ([myerror.localizedDescription rangeOfString:@"Global denied access"].location!=NSNotFound) {
NSLog(@"无法访问相册.请在'设置->定位服务'设置为打开状态.");
}else{
NSLog(@"相册访问失败.");
}
/// 不允许访问的UI提示
[self createNotAllowView];
return ;
};
mutableArray =[[NSMutableArray alloc]init];
ALAssetsLibraryGroupsEnumerationResultsBlock
libraryGroupsEnumeration = ^(ALAssetsGroup* group,BOOL* stop){
if (group != nil)
{
/// 只取视频
[group setAssetsFilter:[ALAssetsFilter allVideos]];
[group enumerateAssetsWithOptions:NSEnumerationConcurrent usingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {
if (result) {
[mutableArray addObject:result];
}
}];
}
else
{
NSLog(@"%ld",mutableArray.count);
[_collectionView reloadData];
}
};
[library enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos
usingBlock:libraryGroupsEnumeration
failureBlock:failureblock];
}
/// 写入本地
-(void)handleWrittenFile:(ALAsset*) videoAsset
{
if (!videoAsset) {
NSLog(@"nil");
return;
}
/// 写入本地路径
NSString *fileName = [self getVideoMergeFilePathString];
ALAssetRepresentation *represent = [videoAsset defaultRepresentation];
NSUInteger size = [represent size];
/// 开辟65636大小的内存 一次读取和写入
const int bufferSize = 65636;
NSLog(@"written to : %@", fileName);
FILE *fileOpen = fopen([fileName cStringUsingEncoding:1], "wb+");
if (fileOpen == NULL) {
return;
}
Byte *buffer =(Byte*)malloc(bufferSize);
NSUInteger read =0, offset = 0;
NSError *error;
if (size != 0) {
do {
read = [represent getBytes:buffer
fromOffset:offset
length:bufferSize
error:&error];
fwrite(buffer, sizeof(char), read, fileOpen);
offset += read;
} while (read != 0);
}
free(buffer);
buffer = NULL;
fclose(fileOpen);
fileOpen= NULL;
}