[英]Zombie kills my App
我正在UITableView
实现异步图像加载,如果我快速滚动行,由于发送到僵尸的消息导致我的应用程序崩溃了……我在这里怎么办?
//loading image from URL
-(void)loadImageFromURL:(NSURL*)url {
if (connection!=nil) { [connection release]; }
//data is NSMutableData
if (data!=nil) { [data release]; }
NSURLRequest* request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
}
//Append received data when it is received
- (void)connection:(NSURLConnection *)theConnection didReceiveData:(NSData *)incrementalData {
if (data==nil) { data = [[NSMutableData alloc] init]; }
[data appendData:incrementalData]; //Message sent to zombie, app CRASHES HERE
}
//When finished
- (void)connectionDidFinishLoading:(NSURLConnection*)theConnection {
//so self data now has the complete image
[connection release];
connection=nil;
//Use received data to construct image
[data release];
data=nil;
}
这里:
if (connection!=nil) { [connection release]; }
if (data!=nil) { [data release]; }
您正在发布数据。 稍后,您尝试使用发布的数据,以使其崩溃。 尝试这个:
if (connection!=nil) { [connection release]; connection = nil; }
if (data!=nil) { [data release]; data = nil; }
这样,您的if
语句将实际触发。
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