基本上我试图将用户输入的值传递给网址并显示基于该结果的结果....因为我没有错误我不太确定什么是错的。非常感谢任何帮助
当我点击按钮时没有任何反应......我添加了eventlistener等等
package com.example.jsonrestclient;
import org.json.JSONException;
import org.json.JSONObject;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
import android.widget.EditText;
public class MainActivity extends Activity {
protected TextView tv1;
protected TextView tv2;
protected TextView tv3;
protected TextView tv4;
protected EditText ET1;
protected String ET2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv1 = (TextView) findViewById(R.id.textView1);
tv2 = (TextView) findViewById(R.id.textView2);
tv3 = (TextView) findViewById(R.id.textView3);
tv4 = (TextView) findViewById(R.id.textView4);
ET1 = (EditText) findViewById(R.id.editText1);
ET2 = ET1.getText().toString();
}
public void button1OnClick(View v) {
String patientString = HttpHandler.HttpGetExec(HttpHandler.baseURI + ET2);
String patientFName = "NOT FOUND",
patientLName = "NOT FOUND",
DOB = "NOT FOUND",
patientGender = "NOT FOUND",
hospitalNumber = "NOT FOUND";
JSONObject patientObj = null;
try {
patientObj = new JSONObject(patientString);
patientFName = (String) patientObj.get("PatientFName");
patientLName = (String) patientObj.get("PatientLName");
DOB = (String) patientObj.get("DOB");
patientGender = (String) patientObj.get("PatientGender");
hospitalNumber = (String) patientObj.get("HospitalNumber");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
tv1.setText(patientFName + " " + patientLName);
tv2.setText("DOB" + " " + DOB);
tv3.setText("Gender" + " " + patientGender);
tv4.setText("Hospital" + " " + hospitalNumber);
}
}
答案 0 :(得分:0)
正如njzk2所提到的,你过早地评估ET2。
你在onCreate()中这样做,这意味着在用户有机会在ET1中输入任何东西之前已经分配了ET2,所以它总是为空。
您需要做的是将ET2 = ET1.getText().toString();
向下移动,作为button1OnClick
中的第一行。
大概button1OnClick
绑定到视图xml中的android:onClick
参数?
另外,什么是HttpHandler?我无法从你的进口中分辨出来。我不确定它是什么,但是考虑将其余的调用移到AsyncTask中可能是值得的。