TelephonyModule.java 文件源码

@TargetApi(24)
public void getEarfcn(WritableMap mapCellIdentity, CellIdentityLte cellIdentity) {
    if (android.os.Build.VERSION.SDK_INT >= 24){
        // Do something for nougat and above versions
        mapCellIdentity.putInt("earfcn", cellIdentity.getEarfcn());
    } else{
        // do something for phones running an SDK before lollipop
        mapCellIdentity.putInt("earfcn", 0);
    }
}