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Incorrect decrement of the reference count of an object that is not owned at thi

 
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1,Incorrect decrement of the reference count of an object that is not owned at this point by the caller


这种问题一般就是变量申请了内存并初始化了,但没有使用此变量,接着将此变量又重新赋值。如下:

    NSString *imageString = [[NSString alloc] init]; 
    imageString = @"HResout"; 

2,Receiver in message expression is a garbage value


    UIColor* tempCol; 
     
    if (level==4) { 
        tempCol= [[UIColor alloc] initWithRed:0.39f green:0.82f blue:0.32f alpha:1.0f]; 
    }else if (level==5) { 
        tempCol= [[UIColor alloc] initWithRed:0.61f green:0.68f blue:0.83f alpha:1.0f]; 
    }else if (level==6) { 
        tempCol= [[UIColor alloc] initWithRed:0.90f green:0.68f blue:0.99f alpha:1.0f]; 
    }else if (level==7) { 
        tempCol= [[UIColor alloc] initWithRed:0.68f green:0.97f blue:0.99f alpha:1.0f]; 
    } 
     
    return [tempCol autorelease]; 


被赋值的是个要回收的变量
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