您好我正在编写一个代码，在listview中它会显示一些来自MySQL数据库的详细信息，如名称和价格。现在，当我想点击该列表视图中的特定项目时，我想要的是我想要移动到下一个活动，布局将是相同的，只有当单击项目时数据不断变化。
就像我点击名字A一样，我想打开一个新的活动名称及其地址密码，电话号码将会详细显示。
我已经获取了listview中的所有细节，并显示了我想要的一些细节，然后将其传递给详细活动。 但我只获得了第二个活动的toast和settext的关键，即＆＃34; NameAddressPincodePhone_Number＆＃34;不是与他们相关的价值观。 请查看我编写的代码。请帮忙
列表视图的活动
public class Plumbers extends Activity {
String myJSON;
public static final String TAG_RESULTS="result";
public static final String TAG_NAME = "Name";
public static final String TAG_ADDRESS = "Address";
public static final String TAG_PINCODE = "Pincode";
public static final String TAG_PHONENUMBER = "Phone_Number";
public static final String TAG_DOB = "DOB";
public static final String TAG_AADHARNUMBER = "Aadhar_Number";
public static final String TAG_Price = "price";
public static final String TAG_Spl = "spl";
JSONArray peoples = null;
ArrayList<HashMap<String, String>> personList;
ListView list;
EditText search;
Spinner spin;
protected Object adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
list = (ListView) findViewById(R.id.list1);
spin=(Spinner)findViewById(R.id.spinner1);
search = (EditText)findViewById(R.id.search);
personList = new ArrayList<HashMap<String,String>>();
getData();
}
protected void showList(){
try {
JSONObject jsonObj = new JSONObject(myJSON);
peoples = jsonObj.getJSONArray(TAG_RESULTS);
for(int i=0;i<peoples.length();i++){
JSONObject c = peoples.getJSONObject(i);
String Name = c.getString(TAG_NAME);
String price = c.getString(TAG_Price);
String spl = c.getString(TAG_Spl);
HashMap<String,String> plumbers = new HashMap<String,String>();
plumbers.put(TAG_NAME,Name);
plumbers.put(TAG_Price,price);
plumbers.put(TAG_Spl,spl);
personList.add(plumbers);
}
final ListAdapter adapter = new SimpleAdapter(
Plumbers.this, personList, R.layout.plumber,
new String[]{TAG_NAME ,TAG_Spl,TAG_Price },
new int[]{R.id.Name , R.id.spl ,R.id.price}
);
list.setAdapter(adapter);
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
adapter.getItem(position);
Intent intent = new Intent(Plumbers.this, Plumber1.class);
intent.putExtra("Name", TAG_NAME);
intent.putExtra("Address", TAG_ADDRESS);
intent.putExtra("Pincode", TAG_PINCODE);
intent.putExtra("Phone_Number", TAG_PHONENUMBER);
startActivity(intent);
}
});
spin.setAdapter((SpinnerAdapter) adapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
public void getData(){
class GetDataJSON extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
DefaultHttpClient httpclient = new DefaultHttpClient(new BasicHttpParams());
HttpPost httppost = new HttpPost("http://192.168.2.7/homerun/plumbers.php");
// Depends on your web service
httppost.setHeader("Content-type", "application/json");
InputStream inputStream = null;
String result = null;
try {
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
inputStream = entity.getContent();
// json is UTF-8 by default
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
// Oops
}
finally {
try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
}
return result;
}
@Override
protected void onPostExecute(String result){
myJSON=result;
showList();
}
}
GetDataJSON g = new GetDataJSON();
g.execute();
}
}
下一个项目详情的活动
public class Plumber1 extends Activity {
ImageView img,call;
TextView pl1,nm,ad,phn,qu,pin;
String Name,Address,Pincode,Phone_Number;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.plumber1);
img=(ImageView)findViewById(R.id.imag);
call=(ImageView)findViewById(R.id.call);
pl1=(TextView)findViewById(R.id.pl1);
nm=(TextView)findViewById(R.id.name);
ad=(TextView)findViewById(R.id.Address);
pin=(TextView)findViewById(R.id.Pincode);
phn=(TextView)findViewById(R.id.phn);
qu=(TextView)findViewById(R.id.quotation);
Intent intent = getIntent();
if (intent.getExtras() != null) {
Name = intent.getStringExtra("Name");
Address = intent.getStringExtra("Address");
Pincode = intent.getStringExtra("Pincode");
Phone_Number = intent.getStringExtra("Phone_Number");
Toast.makeText(getApplicationContext(), Name + "" + Address + "" + Pincode + "" + Phone_Number +"" , Toast.LENGTH_LONG).show();
}
nm.setText(Name+"");
ad.setText(Address+"");
pin.setText(Pincode+"");
phn.setText(Phone_Number+"");
call.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
Intent in = new Intent(android.content.Intent.ACTION_DIAL, Uri
.parse("tel:+918058706096"));
startActivity(in);
}
});
}
}
Php文件
<?php
mysql_connect("localhost","root","");
mysql_select_db("homerun");
$sql="select * from plumbers WHERE Status = '1' GROUP BY price ORDER BY name ASC" ;
$res = mysql_query($sql);
$result = array();
while($row = mysql_fetch_array($res)){
array_push($result,
array('Name'=>$row[1],'spl'=>$row[8],'price'=>$row[7]));
}
echo json_encode(array("result"=>$result));
mysql_close();
?>
答案 0 :(得分：0)
这是错误的
intent.putExtra("Name", TAG_NAME);
putExtra有两个参数，一个是键，第二个是值。在你的情况下，第一个是正确的，但在值参数中你再次正在发送 TAG_NAME（这是错误的）。
使用以下代码
intent.putExtra("Name",personList.get(position).get(TAG_NAME));
intent.putExtra("Address",personList.get(position).get(TAG_ADDRESS));
intent.putExtra("Pincode",personList.get(position).get(TAG_PINCODE));
intent.putExtra("Phone_Number",personList.get(position).get(TAG_PHONENUMBER));
startActivity(intent);
只需复制以上代码
同时将for循环更新为以下代码
for(int i=0;i<peoples.length();i++){
JSONObject c = peoples.getJSONObject(i);
String Name = c.getString(TAG_NAME);
String price = c.getString(TAG_Price);
String spl = c.getString(TAG_Spl);
String Address = c.getString(TAG_ADDRESS);
String Pincode = c.getString(TAG_PINCODE);
String Phone_Number = c.getString(TAG_PHONENUMBER);
HashMap<String,String> plumbers = new HashMap<String,String>();
plumbers.put(TAG_NAME,Name);
plumbers.put(TAG_Price,price);
plumbers.put(TAG_Spl,spl);
plumbers.put(TAG_ADDRESS,Address);
plumbers.put(TAG_PINCODE,Pincode);
plumbers.put(TAG_PHONENUMBER,Phone_Number);
personList.add(plumbers);
}