[移动开发]Gson的解析复杂数据，2021年Android常见面试题

public void setResults(List results) {

this.results = results;

}

@Override

public String toString() {

return “Status{” +

“error=’” + error + ‘’’ +

“, status=’” + status + ‘’’ +

“, date=’” + date + ‘’’ +

“, results=” + results +

‘}’;

}

}

Results.java

public class Results {

private String currentCity;

private List weather_data;

public String getCurrentCity() {

return currentCity;

}

public void setCurrentCity(String currentCity) {

this.currentCity = currentCity;

}

public List getWeather_data() {

return weather_data;

}

public void setWeather_data(List weather_data) {

this.weather_data = weather_data;

}

@Override

public String toString() {

return “Result{” +

“currentCity=’” + currentCity + ‘’’ +

“, weather_data=” + weather_data +

‘}’;

}

}

Weather.java

public class Weather{

private String date;

private String dayPictureUrl;

private String nightPictureUrl;

private String weather;

private String wind;

private String temperature;

public String getDate() {

return date;

}

public void setDate(String date) {

this.date = date;

}

public String getDayPictureUrl() {

return dayPictureUrl;

}

public void setDayPictureUrl(String dayPictureUrl) {

this.dayPictureUrl = dayPictureUrl;

}

public String getNightPictureUrl() {

return nightPictureUrl;

}

public void setNightPictureUrl(String nightPictureUrl) {

this.nightPictureUrl = nightPictureUrl;

}

public String getWeather() {

return weather;

}

public void setWeather(String weather) {

this.weather = weather;

}

public String getWind() {

return wind;

}

public void setWind(String wind) {

this.wind = wind;

}

public String getTemperature() {

return temperature;

}

public void setTemperature(String temperature) {

this.temperature = temperature;

}

@Override

public String toString() {

return “Weather{” +

“date=’” + date + ‘’’ +

“, dayPictureUrl=’” + dayPictureUrl + ‘’’ +

“, nightPictureUrl=’” + nightPictureUrl + ‘’’ +

“, weather=’” + weather + ‘’’ +

“, wind=’” + wind + ‘’’ +

“, temperature=’” + temperature + ‘’’ +

‘}’;

}

}

MainActivity.java主要解析类

public class MainActivity extends AppCompatActivity {

private Button mButton;

private TextView mTextView;

private String string = “{“error”:0,“status”:“success”,“date”:“2014-05-10”,“results”” +

“:[{“currentCity”:“南京”,“weather_data”:[{“date”:“周六(今天, 实时：19℃)”,“dayPictureUrl”” +

“:“http://api.map.baidu.com/images/weather/day/dayu.png”,“nightPictureUrl”:” +

““http://api.map.baidu.com/images/weather/night/dayu.png”,“weather”:“大雨”,“wind”” +

“:“东南风5-6级”,“temperature”:“18℃”},{“date”:“周日”,“dayPictureUrl”:” +

““http://api.map.baidu.com/images/weather/day/zhenyu.png”,“nightPictureUrl”:” +

““http://api.map.baidu.com/images/weather/night/duoyun.png”,“weather”:” +

““阵雨转多云”,“wind”:“西北风4-5级”,“temperature”:“21 ~ 14℃”}]}]}”;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

init();

}

private void init() {

mButton = (Button)findViewById(R.

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id.button);

mTextView = (TextView)findViewById(R.id.text);

mButton.setOnClickListener(mOnClickListener);

}

View.OnClickListener mOnClickListener = new View.OnClickListener() {

@Override

public void onClick(View v) {

if (string!=null){

Gson mGson = new Gson();

System.out.println("running string = "+ string);

Status mStatus = mGson.fromJson(string, Status.class);

System.out.println("running mStatus = " + mStatus);

List mResult = mStatus.getResults();

System.out.println(“running mResult=”+mResult);

}else{

Toast.makeText(MainActivity.this,“没有数据了哦！”,Toast.LENGTH_LONG).show();

}

}

};

}

上面是Gson的简单使用，尊重原作者出处是：
http://blog.csdn.net/tkwxty/article/details/34474501/