java - 我如何检查 switch 中的以下条件而不是 if？

Question

如何在 switch 而不是 if 中检查以下条件？

我想在 switch case 中检查这个条件。

if(tvStartLocation.getText().toString().equalsIgnoreCase(""))
{
    Toast.makeText(getActivity(),"Please enter start location", Toast.LENGTH_SHORT).show();
}
else if(tvEndLocation.getText().toString().equalsIgnoreCase(""))
{
    Toast.makeText(getActivity(),"Please enter end location", Toast.LENGTH_SHORT).show();
}
else if(etStartOdometer.getText().toString().equalsIgnoreCase(""))
{
    Toast.makeText(getActivity(),"Please enter Trip Start Odometer reading", Toast.LENGTH_SHORT).show();
}
else if(etEndOdometer.getText().toString().equalsIgnoreCase(""))
{
    Toast.makeText(getActivity(),"Please enter Trip End Odometer reading", Toast.LENGTH_SHORT).show();
}
else if((compareOdometerReading(etStartOdometer.getText().toString(),etEndOdometer.getText().toString())) == -1)
{
    Toast.makeText(getActivity(),"End Odometer reading should be greater than Start Odometer Reading (eOR > sOR)!", Toast.LENGTH_SHORT).show();
}
else if(etManifest.getText().toString().equalsIgnoreCase(""))
{
    Toast.makeText(getActivity(),"Please enter Manifest", Toast.LENGTH_SHORT).show();
}
else if(etShipper.getText().toString().equalsIgnoreCase(""))
{
    Toast.makeText(getActivity(),"Please enter Shipper", Toast.LENGTH_SHORT).show();
}
else if(etCommodity.getText().toString().equalsIgnoreCase(""))
{
    Toast.makeText(getActivity(),"Please enter Commodity", Toast.LENGTH_SHORT).show();
}

提前推荐我

Answer 1

在 switch 语句中，您将一个变量与不同的常量值进行比较。您想要将不同的变量与一个常量值进行比较。这是不可能的，恕我直言，在您的情况下没有意义。