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我已经使用此代码来获得重力值。但问题是,当我将iPhone保持在桌面上时,它仍显示0.99的价值。可以有人告诉我原因吗?代码是重力计算
sx = acceleration.x * kFilteringFactor + sx * (1.0 - kFilteringFactor);
sy = acceleration.y * kFilteringFactor + sy * (1.0 - kFilteringFactor);
sz = acceleration.z * kFilteringFactor + sz * (1.0 - kFilteringFactor);
float aValue = sqrt(sx*sx+sy*sy+sz*sz);
[gLabel setText:[NSString stringWithFormat:@"%.2f",aValue]];