android - 如何在 Android 的 TextView 中显示 JSON 文件？

Question

我想在我的 Activity 中的 TextView 中显示此 JSON。

这是我的JSON，

{
    "AboutUs": [{
        "p_content": "Dr. Vineet Malhotra currently working as a Consultant urologist where job description requires to run the urology units at these hospitals and perform various endourology, reconstructive and laparoscopic procedures. Dr. Vineet Malhotra associated with the department of urology for the last ten years and have been exposed to different practice methodologies.Dr. Vineet Malhotra have a special interest in recent advances in minimally invasive procedures in urology.\n"
    }]
}

这是我的 Activity，我想在 TextView 中显示此 JSON，

public class AboutUs extends AppCompatActivity {
    private String TAG=MainActivity.class.getSimpleName();
    private ProgressDialog pDialog;

    TextView tv;
    private static String url="http://softappsdemo.com/doctorplus/";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_about_us);
        Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        new GetContacts().execute();
    }


    private class GetContacts extends AsyncTask<Void,Void,Void> {
        protected void onPreExecute(){
            super.onPreExecute();
            pDialog=new ProgressDialog(AboutUs.this);
            pDialog.setMessage("Please Wait ......");
            pDialog.setCancelable(false);
            pDialog.show();
        }
        protected Void doInBackground(Void... arg){
            Handler sh=new Handler();
            String jsonStr=sh.makeServiceCall(url);
            Log.e(TAG,"Response from url : " +jsonStr);
            if(jsonStr!=null){

                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);
                    JSONArray contacts = jsonObj.getJSONArray("AboutUs");

                        JSONObject c = contacts.getJSONObject(0);

                        String name = c.getString("p_content");




                }catch (final JSONException e){
                    Log.e(TAG,"Json parsing error: " +e.getMessage());
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(getApplicationContext(),"JSON parsing error: " +e.getMessage(),Toast.LENGTH_LONG).show();
                        }
                    });
                }

            }else {
                Log.e(TAG,"Could not get JSON from server.");
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),"could not get JSOM from server check logcat if possible " ,Toast.LENGTH_LONG).show();
                    }
                });
            }

            return null;
        }
        protected void onPostExecute(Void result){
            super.onPostExecute(result);
            if (pDialog.isShowing())
                pDialog.dismiss();
        }
    }
}

我应该在哪里放置 TextView 的代码？

请大家帮帮我。提前致谢。

Answer 1

一种方法是将您的 String 名称变量作为全局变量，并在 onPostExecute 方法中设置 TextView 中的内容。

public class AboutUs extends AppCompatActivity {
    private String name;

.............................
..........................


 protected void onPostExecute(String result){
        super.onPostExecute(result);
        if (result != null)
            myTextView.setText(name);

    }