如何將jpg或png圖像添加到UIImage然後顯示在UIImageView中？

Question

UIImage *img = [[UIImage alloc] initWithContentsOfFile:@"contactHeader.png"]; 
_headersView = [[UIImageView alloc] initWithImage:img]; 

我已經在IB中連接了UIImageView（_headersView）的連接。我想要加載的圖像也在我的項目樹結構中。

我是否正確地創建UIImage？

Answer 1

如果該文件是在你的包，你可以只使用

UIImage *img = [UIImage imageNamed:@"contactHeader"]; 
_headersView = [[UIImageView alloc] initWithImage:img]; 

如果圖像是在你的文檔目錄，你可以使用

// Get the path to your documents directory 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [paths objectAtIndex:0]; 

// Add the file to the end of the documents path 
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:@"contactHeader.png"]; 

UIImage *img = [[UIImage alloc] imageWithContentsOfFile:filePath]; 
_headersView = [[UIImageView alloc] initWithImage:img]; 
[img release]; img = nil; 

Answer 2

試試這個

-(NSString *)getPath:(NSString *)filename 
{ 
self.path = [[NSBundle mainBundle]pathForResource:filename ofType:@"png"]; 
return path; 
path = nil; 
} 

self.youImageView.image = [UIImage imageWithContentsOfFile:[self getPath:@"123"]];