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我的問題是參考OnclickListner和java類。我有一個帶有兩個按鈕的xml佈局;一個（點擊時）觸發「日期」類，另一個觸發「電子郵件」類。電子郵件按鈕工作正常，但是當我嘗試設置一個點擊監聽器的「日期」按鈕時，應用程序崩潰（當觸發）。我的目標是能夠點擊日期按鈕，顯示日期選擇器。這是我的代碼。 希望這是足夠的信息，任何人都可以幫助我，謝謝大家。如何使用兩個不同類的onClickListeners引用佈局
XML：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="100"
android:orientation="vertical"
android:background="@color/white">
<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/bgklogo3" />
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Schedule Service"
android:textSize="20sp"
android:textStyle="bold"
android:textColor="@color/black"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="30" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="20sp"
android:textStyle="bold"
android:textColor="@color/black"
android:text="Your Information"
android:textAppearance="?android:attr/textAppearanceSmall" />
<EditText
android:id="@+id/firstName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:maxLength="20"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter First Name..." >
</EditText>
<EditText
android:id="@+id/lastName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter Last Name..." />
<EditText
android:id="@+id/Email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter Email..."
android:inputType="textEmailAddress" />
<EditText
android:id="@+id/PhoneNumber"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter Phone Number..."
android:inputType="phone" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="@color/black"
android:text="Vehicle Information"
android:textSize="20sp"
android:textStyle="bold"
android:textAppearance="?android:attr/textAppearanceSmall" />
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<!--
<EditText
android:id="@+id/tYear"
android:layout_width="155dp"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="What year is it?"/>
<EditText
android:id="@+id/tMake"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="What make is it?"/>
-->
<Spinner
android:id="@+id/sYear"
android:layout_width="155dp"
android:layout_height="wrap_content"
android:entries="@array/entries"
android:prompt="@string/prompt" />
<Spinner
android:id="@+id/sMake"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/entries2"
android:prompt="@string/prompt2" >
</Spinner>
</LinearLayout>
<EditText
android:id="@+id/Model"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter Model..." />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="@color/black"
android:hint="Service Information"
android:textSize="20sp"
android:textStyle="bold"
android:textAppearance="?android:attr/textAppearanceSmall" />
<LinearLayout
android:id="@+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="30" >
<!-- <EditText
android:id="@+id/tpickDate"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter service date..."/>
-->
<Button
android:id="@+id/pickDate"
android:layout_width="142dp"
android:layout_height="wrap_content"
android:text="Service Date: "
android:onClick="onClick"/>
<TextView
android:id="@+id/dateDisplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/dateDisplay"
android:textSize="20sp" />
-->
</LinearLayout>
<!--
<EditText
android:id="@+id/tTime"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter service time..." />
<EditText
android:id="@+id/tNeeded"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter service needed..." />
-->
<Spinner
android:id="@+id/sTime"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/entries3"
android:prompt="@string/prompt3" />
<Spinner
android:id="@+id/sNeeded"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/entries4"
android:prompt="@string/prompt4" />
<EditText
android:id="@+id/eComments"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:imeActionLabel="Next"
android:hint="Enter Comments Here..."
android:inputType="textMultiLine" />
</LinearLayout>
</ScrollView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="40"
android:orientation="vertical" >
<Button
android:id="@+id/bSentEmail"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Submit"
android:textSize="20dp"
android:onClick="handleClick"
/>
</LinearLayout>
</LinearLayout>
Date類：
import java.util.Calendar;
import java.util.Date;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.text.method.KeyListener;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.Spinner;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;
import android.widget.Toast;
public class ScheduleService extends Activity implements OnClickListener {
EditText /* serviceTime, serviceNeeded, vehicleYear, vehicleMake, */
personsFirstName,
personsLastName,
personsEmail,
personsPhone,
comments,
vehicleModel;
Spinner serviceTime, serviceNeeded, vehicleYear, vehicleMake;
TextView serviceDate;
String fname, lname, phoneNumber, vehicleYears, vehicleModeltrim,
vehicleManu, serviceAppointment, serviceAppointmentTime,
serviceTypeNeeded, extraComments, emailAdd, emailaddress, message;
Button sendEmail, PickDate ;
private TextView mDateDisplay;
private Button mPickDate;
private int mYear;
private int mMonth;
private int mDay;
static final int DATE_DIALOG_ID = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.service);
initialize();
PickDate.setOnClickListener(this);
}
public void onClick(){
//
mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
mPickDate = (Button) findViewById(R.id.pickDate);
// add a click listener to the button
mPickDate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
// get the current date
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
// display the current date
updateDisplay();
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this,
mDateSetListener,
mYear, mMonth, mDay);
}
return null;
}
// updates the date we display in the TextView
private void updateDisplay() {
mDateDisplay.setText(
new StringBuilder()
// Month is 0 based so add 1
.append(mMonth + 1).append("-")
.append(mDay).append("-")
.append(mYear).append(" "));
}
// 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();
}
};
// Use the following commented fields for future Spinner properties
private void initialize() {
// TODO Auto-generated method stub
personsFirstName = (EditText) findViewById(R.id.firstName);
personsLastName = (EditText) findViewById(R.id.lastName);
personsEmail = (EditText) findViewById(R.id.Email);
personsPhone = (EditText) findViewById(R.id.PhoneNumber);
vehicleYear = (Spinner) findViewById(R.id.sYear);
vehicleMake = (Spinner) findViewById(R.id.sMake);
// vehicleYear = (EditText) findViewById(R.id.tYear);
// vehicleMake = (EditText) findViewById(R.id.tMake);
vehicleModel = (EditText) findViewById(R.id.Model);
serviceDate = (TextView) findViewById(R.id.dateDisplay);
serviceTime = (Spinner) findViewById(R.id.sTime);
serviceNeeded = (Spinner) findViewById(R.id.sNeeded);
// serviceTime = (EditText) findViewById(R.id.tTime);
// serviceNeeded = (EditText) findViewById(R.id.tNeeded);
comments = (EditText) findViewById(R.id.eComments);
sendEmail = (Button) findViewById(R.id.bSentEmail);
PickDate = (Button) findViewById(R.id.pickDate);
}
public void handleClick(View v) {
// TODO Auto-generated method stub
conversion();
String emailaddress[] = { "[email protected]" };
String message = "Please Review the following:" + '\n' + " " + '\n'
+ "First Name: " + fname + '\n' + "Last Name: " + lname + '\n'
+ "Email :" + emailAdd + '\n' + "Phone Number: " + phoneNumber
+ '\n' + "Vechile Year: " + vehicleYears + '\n'
+ "Vehicle Make: " + vehicleManu + '\n' + "Vehicle Model: "
+ vehicleModeltrim + '\n' + "Requested Service Date: "
+ serviceAppointment + '\n' + "Requested Service Time: "
+ serviceAppointmentTime + '\n' + "Service Needed: "
+ serviceTypeNeeded + '\n' + "Comments: " + extraComments;
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("vnd.android.cursor.dir/email");
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,
new String[] { "[email protected]" });
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, emailaddress);
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
"Mobile App: Schedule Service Request");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, message);
startActivity(Intent.createChooser(emailIntent,
"Please select Email Client"));
}
private void conversion() {
// TODO Auto-generated method stub
fname = personsFirstName.getText().toString();
lname = personsLastName.getText().toString();
emailAdd = personsEmail.getText().toString();
phoneNumber = personsPhone.getText().toString();
// vehicleYears = vehicleYear.getText().toString();// Text field
// substitute for spinner adapter
// vehicleManu = vehicleMake.getText().toString(); // Text field
// substitute for spinner adapter
vehicleYears = (String) vehicleYear.getSelectedItem().toString();
vehicleManu = (String) vehicleMake.getSelectedItem().toString();
vehicleModeltrim = vehicleModel.getText().toString();
serviceAppointment = serviceDate.getText().toString();
// serviceAppointmentTime = serviceTime.getText().toString();
// serviceTypeNeeded = serviceNeeded.getText().toString();
serviceAppointmentTime = (String) serviceTime.getSelectedItem()
.toString();
serviceTypeNeeded = (String) serviceNeeded.getSelectedItem().toString();
extraComments = comments.getText().toString();
}
public void onClick(View v) {
// TODO Auto-generated method stub
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
@Override
protected void onDestroy() {
super.onDestroy();
{
}
}
}
你會想在這裏包括堆棧跟蹤。 – 2012-04-10 20:48:24