Why is my if statement here being skipped? Directly to else:

override fun onSensorChanged(event: SensorEvent) {
        runOnUiThread {
            val xAxis = event.values[0]
            val yAxis = event.values[1]
            val zAxis = event.values[2]
            Log.d("Eixos", /*"Eixo X: $xAxis, Eixo Y: $yAxis,*/ "Eixo Z: $zAxis")
            if (zAxis in 0.900000..-0.900000){
                imagemCelular!!.setImageResource(R.drawable.phoneright)
                Log.d("Phonin", "Certo")
            }else{
                imagemCelular!!.setImageResource(R.drawable.phonewrong)
                Log.d("Phonin", "Errado")
            }
        }
    }

Here is a pic of the compiler, the value is indeed between what I need, but it's like my if statement is not even there.

PrintScreen

CodePudding user response：

By defining the range from large to small, Kotlin will assume this range is empty. If you flip the range around so it goes smallest to largest, this should work:

Change:

if (zAxis in 0.900000..-0.900000)

To:

if (zAxis in -0.900000..0.900000)

Or:

if (zAxis in -0.9..0.9){

CodePudding user response：

I think you must change position between 0.9 and -0.9 because operator function define is

override fun contains(value: T): Boolean = lessThanOrEquals(start, value) && lessThanOrEquals(value, endInclusive)