这是我用于 HTTP 发布的代码
public void postData() {
//DineOutActivity doa = null;
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("192.168.1.112/andro/index.php/androctrl/test/");
try {
//food item
Spinner spinner = (Spinner) findViewById(R.id.spinner1);
String fooditem = spinner.getSelectedItem().toString();
TextView mDateDisplay = (TextView)findViewById(R.id.textView2);
String Date = mDateDisplay.toString();
TextView mTimeDisplay = (TextView)findViewById(R.id.textView4);
String Time = mTimeDisplay.toString();
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("fooditem", "fooditem"));
nameValuePairs.add(new BasicNameValuePair("Date", "Date"));
nameValuePairs.add(new BasicNameValuePair("Time", "Time"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
String str = inputStreamToString(response.getEntity().getContent()).toString();
Log.w("ADPORTAL", str);
HttpStatus status;
if(str.toString().equalsIgnoreCase("false"))
{Toast.makeText(getBaseContext(), str, Toast.LENGTH_LONG).show();
//result.setText("You are not registerd please register"
}
else
{Toast.makeText(getBaseContext(), str, Toast.LENGTH_LONG).show();}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
private StringBuilder inputStreamToString(InputStream is) {
String line = "";
StringBuilder total = new StringBuilder();
// Wrap a BufferedReader around the InputStream
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
// Read response until the end
try {
while ((line = rd.readLine()) != null) {
total.append(line);
}
} catch (IOException e) {
e.printStackTrace();
}
// Return full string
return total;
我使用 mTimeDisplay[Text View2] 作为 TimePicker 对话框中的值。并将 mDateDisplay [Texview4] 作为 DatePicker Dialog 的值。
以下是我使用过的全部源代码postData()
public class DineOutActivity extends Activity {
private TextView mDateDisplay;
private Button mPickDate;
private int mYear;
private int mMonth;
private int mDay;
/******************time picker**************/
private TextView mTimeDisplay;
private Button mPickTime;
private int mHour;
private int mMinute;
private int mAmPm;
static final int TIME_DIALOG_ID=1;
static final int DATE_DIALOG_ID = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
/********************spinner***********/
Spinner food = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<CharSequence> foodadapter = ArrayAdapter.createFromResource(
this, R.array.item_array, android.R.layout.simple_spinner_item);
foodadapter.setDropDownViewResource(R.layout.spinner_layout);
food.setAdapter(foodadapter);
/**pick date*/
mDateDisplay = (TextView) findViewById(R.id.textView2);
mTimeDisplay = (TextView) findViewById(R.id.textView4);
mPickDate = (Button) findViewById(R.id.button2);
/**pick time**/
mPickTime=(Button)findViewById(R.id.button3);
// add a click listener to the button
mPickTime.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(TIME_DIALOG_ID);
}
});
// get the current time
final Calendar c=Calendar.getInstance();
mHour=c.get(Calendar.HOUR_OF_DAY);
mMinute=c.get(Calendar.MINUTE);
mAmPm = c.get(Calendar.AM_PM);
// display the current date
upTimeDisplay();
/*****************************pick date***********************************/
// add a click listener to the button
mPickDate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v1) {
showDialog(DATE_DIALOG_ID);
}
});
// get the current date
final Calendar date = Calendar.getInstance();
mYear = date.get(Calendar.YEAR);
mMonth = date.get(Calendar.MONTH);
mDay = date.get(Calendar.DAY_OF_MONTH);
int mDst = date.get(Calendar.AM_PM);
int mAmPm = date.get(Calendar.DST_OFFSET);
// display the current date (this method is below)
updateDisplay();
}
// updates the date in the TextView
private String upTimeDisplay()
{
// mTimeDisplay.setText(new
// StringBuilder().append(pad(mHour)).append(":").append(pad(mMinute)).append(pad(mAmPm)));
mTimeDisplay.setText(new
StringBuilder().append(mHour).append(":").append(mMinute));
mTimeDisplay.setTextColor(R.color.green);
return null;
}
/** private Object pad(int mMinute2) {
if(mMinute2>=10)
return String.valueOf(mMinute2);
else
return "0"+String.valueOf(mMinute2);
}**/
private TimePickerDialog.OnTimeSetListener mtimeSetListener=new
TimePickerDialog.OnTimeSetListener() {
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
mHour=hourOfDay;
mMinute=minute;
int ampm;
upTimeDisplay();
}
};
private String updateDisplay() {
mDateDisplay.setText(new StringBuilder()
// Month is 0 based so add 1
.append(mMonth + 1).append("-")
.append(mDay).append("-")
.append(mYear).append(" "));
mDateDisplay.setTextColor(R.color.green);
// .append(mHour).append("_")
// .append(mMinute).append("_")));
return null;
}
// the callback received when the user "sets" the date in the dialog
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDisplay();
}
};
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
mDay);
case TIME_DIALOG_ID:
return new TimePickerDialog(this,mtimeSetListener,mHour,mMinute,false);
}
return null;
}
public void imageclick(View view)
{
postData();
//Intent where = new Intent(this, WhereToeat.class);
//startActivity(where);
}
/**************/
public void postData() {
//DineOutActivity doa = null;
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("192.168.1.112/andro/index.php/androctrl/test/");
try {
//food item
Spinner spinner = (Spinner) findViewById(R.id.spinner1);
String fooditem = spinner.getSelectedItem().toString();
TextView mDateDisplay = (TextView)findViewById(R.id.textView2);
String Date = mDateDisplay.toString();
TextView mTimeDisplay = (TextView)findViewById(R.id.textView4);
String Time = mTimeDisplay.toString();
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("fooditem", "fooditem"));
nameValuePairs.add(new BasicNameValuePair("Date", "Date"));
nameValuePairs.add(new BasicNameValuePair("Time", "Time"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
String str = inputStreamToString(response.getEntity().getContent()).toString();
Log.w("ADPORTAL", str);
HttpStatus status;
if(str.toString().equalsIgnoreCase("false"))
{Toast.makeText(getBaseContext(), str, Toast.LENGTH_LONG).show();
//result.setText("You are not registerd please register"
}
else
{Toast.makeText(getBaseContext(), str, Toast.LENGTH_LONG).show();}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
private StringBuilder inputStreamToString(InputStream is) {
String line = "";
StringBuilder total = new StringBuilder();
// Wrap a BufferedReader around the InputStream
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
// Read response until the end
try {
while ((line = rd.readLine()) != null) {
total.append(line);
}
} catch (IOException e) {
e.printStackTrace();
}
// Return full string
return total;
}
我有一个ExceptioninpostData方法在行
HttpResponse response = httpclient.execute(httppost);
logcat 的例外是：
05-04 11:53:00.096: E/AndroidRuntime(4281): FATAL EXCEPTION: main
05-04 11:53:00.096: E/AndroidRuntime(4281): java.lang.IllegalStateException: Could not execute method of the activity
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.view.View$1.onClick(View.java:2144)
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.view.View.performClick(View.java:2485)
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.view.View$PerformClick.run(View.java:9080)
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.os.Handler.handleCallback(Handler.java:587)
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.os.Handler.dispatchMessage(Handler.java:92)
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.os.Looper.loop(Looper.java:130)
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.app.ActivityThread.main(ActivityThread.java:3687)
05-04 11:53:00.096: E/AndroidRuntime(4281): at java.lang.reflect.Method.invokeNative(Native Method)
05-04 11:53:00.096: E/AndroidRuntime(4281): at java.lang.reflect.Method.invoke(Method.java:507)
05-04 11:53:00.096: E/AndroidRuntime(4281): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
05-04 11:53:00.096: E/AndroidRuntime(4281): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
05-04 11:53:00.096: E/AndroidRuntime(4281): at dalvik.system.NativeStart.main(Native Method)
05-04 11:53:00.096: E/AndroidRuntime(4281): Caused by: java.lang.reflect.InvocationTargetException
05-04 11:53:00.096: E/AndroidRuntime(4281): at java.lang.reflect.Method.invokeNative(Native Method)
05-04 11:53:00.096: E/AndroidRuntime(4281): at java.lang.reflect.Method.invoke(Method.java:507)
05-04 11:53:00.096: E/AndroidRuntime(4281): at android.view.View$1.onClick(View.java:2139)
05-04 11:53:00.096: E/AndroidRuntime(4281): ... 11 more
05-04 11:53:00.096: E/AndroidRuntime(4281): Caused by: java.lang.IllegalStateException: Target host must not be null, or set in parameters.
05-04 11:53:00.096: E/AndroidRuntime(4281): at org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:577)
05-04 11:53:00.096: E/AndroidRuntime(4281): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:292)
05-04 11:53:00.096: E/AndroidRuntime(4281): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
05-04 11:53:00.096: E/AndroidRuntime(4281): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
05-04 11:53:00.096: E/AndroidRuntime(4281): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
05-04 11:53:00.096: E/AndroidRuntime(4281): at com.crews.dineout.DineOutActivity.postData(DineOutActivity.java:243)
05-04 11:53:00.096: E/AndroidRuntime(4281): at com.crews.dineout.DineOutActivity.imageclick(DineOutActivity.java:209)
05-04 11:53:00.096: E/AndroidRuntime(4281): ... 14 more
我是从移动设备上运行的，它有 wifi 连接而且我有互联网许可。