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我試圖打開一個文件「d.mp3」我加入到我的Xcode 8.0項目。
如果我雙擊Xcode>項目>'d.mp3'文件播放就好了。
但是,當Xcode在我的iPhone6 +(iOS 10.0.1)上運行我的應用程序時,fopen()爲文件句柄返回0。Xcode的應用程序可以爲二進制不能打開文件讀取
代碼和下面輸出...
bool read_next_chunk(char* relative_file_pathname, unsigned char* chunk_buffer, int chunk_size_bytes, FILE* file_handle )
{ 常量布爾DBG = TRUE;
// Get absolute file pathname:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *program_directory = [paths objectAtIndex:0];
NSString* absolute_pathname = [NSString stringWithFormat: @"%@/%s", program_directory, relative_file_pathname ];
if(dbg) printf("\n%s: file '%s'. Path '%s'.", __FUNCTION__, relative_file_pathname, [absolute_pathname UTF8String]);
// Open file if not already open:
if(file_handle == NULL)
{
if(dbg) printf("\n%s Open file %s.", __FUNCTION__, relative_file_pathname);
file_handle = fopen([absolute_pathname UTF8String], "rb"); // open for binary reading
if(dbg) printf("\n%s file_handle %d.", __FUNCTION__, file_handle);
}
if(file_handle)
{
// Read next chunk of file into file_content_string:
int total_read_bytes = (int)fread(chunk_buffer, 1, chunk_size_bytes, file_handle);
if(total_read_bytes != chunk_size_bytes)
{
printf("\n %s: %d total_read_bytes != %d chunk_size_bytes -- FAULT!! <<<<<<<<<<<",__FUNCTION__, total_read_bytes, chunk_size_bytes);
return false;
}
return true;
}
else
{
printf("\ %s: Cannot open '%s' FAULT!! <<<<<<<<<<<", __FUNCTION__, relative_file_pathname);
return false;
}
}
read_next_chunk:文件 'd.mp3'。路徑'/var/mobile/Containers/Data/Application/C8B87C49-C6CF-4677-B775-6B3DF6EFD908/Documents/d.mp3'。
read_next_chunk打開文件d.mp3。
read_next_chunk file_handle 0. read_next_chunk:無法打開'd.mp3'FAULT !! < < < < < < < < < < <
如果文件捆綁在您的應用程序中,它將不會在Documents文件夾中。使用'NSBundle'訪問它。 – rmaddy