Question

我想从字符串数组转换字符串。这个字符串是 temp1 和 hum1 。我想把温度和湿度的值放在android.Here station对象的表中包含整个json respose.So.How我可以将字符串转换为字符串数组。请帮助。谢谢。

public class LocationActivity extends ListActivity {

    private static final String TAG_PARAM_NAME = "PARAM_NAME";

    private static final String TAG_PARAM_VALUE = "PARAM_VALUE";

    private static final String TAG_PARAM_UNIT = "PARAM_UNIT";

    TableLayout tl;


    @Override

    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_table__weather_forecast);


        class GetWeatherDetails extends AsyncTask<String, String, String> 

        {

            protected String doInBackground(String... params) 
            {

              runOnUiThread(new Runnable() 
               {

                  public void run()
                  {

                    try {

                        List<NameValuePair> params = new ArrayList<NameValuePair>();
                        params.add(new BasicNameValuePair("LAT", LAT));
                        params.add(new BasicNameValuePair("LONGITUDE", LONGITUDE));

                        JSONObject json = jsonParser.makeHttpRequest(
                                url_Weather_details, "GET", params);


                        Log.d("Weather Details", json.toString());
                            JSONArray stationObj = json.getJSONArray(TAG_WEATHER); // JSON Array

                             int lengthJsonArr = stationObj.length();  

                            // get weather info object from JSON Array

                            for(int i=0;i<lengthJsonArr;i++)

                            {
                                JSONObject station = stationObj.getJSONObject(i);

                                if(station.getString(TAG_PARAM_NAME).contains("Temperature"))
                                {
                                    String temp1=station.getString(TAG_PARAM_VALUE);

                                }
                                if(station.getString(TAG_PARAM_NAME).contains("Humidity"))
                                {
                                        String hum1=station.getString(TAG_PARAM_VALUE);


                                }

                            }


                        }

                    }

                }   
            }
        }
    }
}

我试过这个例子，但它只给了我22 的值而不是整个字符串

package com.example.string;

    import android.os.Bundle;
    import android.app.Activity;
    import android.util.Log;
    import android.view.Menu;
    import android.widget.TextView;

    public class MainActivity extends Activity {
    TextView textview;
    String temp;
    String tempArray[];
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            String temp11[]={"21","31","22"};
            for(int i=0;i<=2;i++)
            {
              temp=temp11[i];

            }

            tempArray = temp.split(",");

             Log.d("temparray",tempArray.toString());
             textview=(TextView)findViewById(R.id.textView1);
             for (int i = 0; i < tempArray.length; i++)
                {
                 textview.setText(tempArray[i]);
                }
        }

        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.main, menu);
            return true;
        }

    }


EDIT:

String temp;
    String tempArray[];
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
             temp="21,31,22";


            tempArray = temp.split(",");
            for (String eachTemp : tempArray){
              Log.d("tempArray",tempArray.toString());
            }
             textview=(TextView)findViewById(R.id.textView1);
             for (int i = 0; i < tempArray.length; i++)
                {
                 textview.setText(tempArray[i]);
                }
        }

Answer 1

最简单的方法是：

String[] tempArray = temp1.split(",");

编辑：

String temp="21,23,21,24,26";

tempArray = temp.split(",");
for (String eachTemp : tempArray){
  do whatever you want here
}

Answer 2

这段代码毫无意义：

    String temp11[]={"21","31","22"};
    for(int i=0;i<=2;i++)
    {
      temp=temp11[i];

    }

    tempArray = temp.split(",");

你有一个临时数组，然后你迭代每一个，什么都不做。当你完成时，你拿最后一个（“22”）并尝试将它分成逗号，它什么都不做。

也许你想要的是这样的：

    String someTemps = "21,31,22";

    for (String temp : someTemps.split(",")) {
        // use the value stored in the variable 'temp' here
        System.out.println("Do something interesting with temp " + temp);
    }

从android中的字符串数组转换字符串

2 个答案: