Tuning it in – FM radio tuner

Some Android phones have an FM radio receiver. Mine does! It requires the wired headphones to be inserted to work as the antenna. 

We start by implementing a Radio component:

Radio {
    id: radio

The Radio element has a band property that you can use to configure the radio's frequency band use. They are one of the following:

• Radio.AM : 520 - 1610 kHz
• Radio.FM : 87.5 - 108 MHz, Japan 76 - 90 MHz
• Radio.SW : 1.711 to 30 MHz
• Radio.LW : 148.5 to 283.5 kHz
• Radio.FM2 : Range not defined

    band: Radio.FM
    Component.onCompleted {
        if (radio.availability == Radio.Available)
            console.log("Good to go!")
        else 
           console.log("Sad face. No radio found. :(")
    }
}

The availability property can return the following different values:

• Radio.Available
• Radio.Busy
• Radio.Unavailable...