Question

    TextView location=(TextView)template_view.findViewById(R.id.tvlocation);
    TextView weather=(TextView)template_view.findViewById(R.id.tvweather);
    TextView temp=(TextView)template_view.findViewById(R.id.tvtemp);
    TextView dewpoint=(TextView)template_view.findViewById(R.id.tvdew);
    TextView humidity=(TextView)template_view.findViewById(R.id.tvhumidity);
    TextView windspeed=(TextView)template_view.findViewById(R.id.tvspeed);
    TextView winddir=(TextView)template_view.findViewById(R.id.tvdir);
    TextView windgust=(TextView)template_view.findViewById(R.id.tvgust);
    TextView pressure=(TextView)template_view.findViewById(R.id.tvcondition);
    TextView heatindex=(TextView)template_view.findViewById(R.id.tvheat);
    TextView visibility=(TextView)template_view.findViewById(R.id.tvvisibility);
    TextView precipitation=(TextView)template_view.findViewById(R.id.tvprecipitation);
    TextView dailyprecipitation=(TextView)template_view.findViewById(R.id.tvdaily);
    TextView sunrise=(TextView)template_view.findViewById(R.id.tvsunrise);
    TextView sunset=(TextView)template_view.findViewById(R.id.tvsunset);

    location.setText(Voicenames.get(position).getLocation());
    weather.setText(Voicenames.get(position).getWeather());
    //temp.setText(Voicenames.get(position).getTemp_c());
    //dewpoint.setText(Voicenames.get(position).getDewpoint_c());
    //windspeed.setText(Voicenames.get(position).getWind_kph());
    //windgust.setText(Voicenames.get(position).getWind_gust_kph());
    humidity.setText(Voicenames.get(position).getRelative_humidity());
    winddir.setText(Voicenames.get(position).getWind_dir());
    pressure.setText(Voicenames.get(position).getPressure_mb());
    heatindex.setText(Voicenames.get(position).getHeat_index_c());
    visibility.setText(Voicenames.get(position).getVisibility_km());
    precipitation.setText(Voicenames.get(position).getPrecipitation());
    dailyprecipitation.setText(Voicenames.get(position).getDaily_precipitation());
    sunrise.setText(Voicenames.get(position).getSunrise());
    sunset.setText(Voicenames.get(position).getSunset());

我这里有一个字符串值列表视图，我把注释放在int值上我不能传递一个int值为什么我可以将一个int值传递给字符串，以便空指针异常不再显示？这里使用JSONboject

Answer 1

您可以使用：

String.valueOf(Voicenames.get(position).getWhatever());

Answer 2

将这些吸气剂包裹在String.valueOf。

temp.setText( String.valueOf(Voicenames.get(position).getTemp_c()) );
dewpoint.setText( String.valueOf(Voicenames.get(position).getDewpoint_c()) );
windspeed.setText( String.valueOf(Voicenames.get(position).getWind_kph()) );
windgust.setText( String.valueOf(Voicenames.get(position).getWind_gust_kph()) );

将int值传递给listview中的字符串值

2 个答案: