这是例外..
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): FATAL EXCEPTION: main
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@405727b0 is not valid; is your activity running?
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.view.ViewRoot.setView(ViewRoot.java:527)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.view.Window$LocalWindowManager.addView(Window.java:424)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.app.Dialog.show(Dialog.java:241)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.app.DatePickerDialog.show(DatePickerDialog.java:132)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.app.Activity.showDialog(Activity.java:2566)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.app.Activity.showDialog(Activity.java:2524)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at com.android.uis.DaysActivity$4.onClick(DaysActivity.java:82)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.view.View.performClick(View.java:2485)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.view.View$PerformClick.run(View.java:9080)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.os.Handler.handleCallback(Handler.java:587)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.os.Handler.dispatchMessage(Handler.java:92)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.os.Looper.loop(Looper.java:130)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at android.app.ActivityThread.main(ActivityThread.java:3683)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at java.lang.reflect.Method.invokeNative(Native Method)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at java.lang.reflect.Method.invoke(Method.java:507)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
10-15 18:15:00.031: ERROR/AndroidRuntime(9202): at dalvik.system.NativeStart.main(Native Method)
以下是创建DatePickDoilog
的代码活动的完整代码
package com.android.uis;
import java.util.ArrayList;
import java.util.Calendar;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.classes.Appointment;
import com.android.database.DatabaseHelper;
import com.android.networkservices.TimeTableWebService;
public class DaysActivity extends Activity {
private ListView lvDay;
private Button bUpdateTimeTable,bChangeDate;
private ArrayList<String> items;
private ArrayList<Appointment> appointments;
private EfficientAdapter adap;
private int mYear;
private int mMonth;
private int mDay;
static final int DATE_DIALOG_ID = 0;
Activity a;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.day_layout);
lvDay = (ListView)this.findViewById(R.id.lvDay);
bUpdateTimeTable = (Button)this.findViewById(R.id.bUpdateTimeTable);
bChangeDate = (Button)this.findViewById(R.id.bChangeDate);
items = new ArrayList<String>();
appointments = new ArrayList<Appointment>();
lvDay.setClickable(true);
bindList();// to bind list items
a= this;
lvDay.setOnItemClickListener(new OnItemClickListener(){
public void onItemClick(AdapterView<?> parent, View view, int position,long id) { }
});
bUpdateTimeTable.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View arg0) {
DatabaseHelper db = new DatabaseHelper(getApplicationContext());
// At first delete the previous data then retrieve the new one
db.deteleAllAppointments();
appointments.clear();
items.clear();
TimeTableWebService ttws = new TimeTableWebService();
ttws.execute("http://mmu4bader.com/AppointmentJSon/getAppointments1");
ttws.getResult(getApplicationContext());
bindList();
}
});
bChangeDate.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View arg0) {
a.showDialog(DATE_DIALOG_ID);
Toast.makeText(getApplicationContext(), "date", Toast.LENGTH_SHORT).show();
}
});
// 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 (this method is below)
updateDisplay();
}
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);
}
return null;
}
private void updateDisplay() {
}
private void bindList(){
DatabaseHelper db = new DatabaseHelper(getApplicationContext());
appointments = db.getAllAppointments();
Log.d("App from DB",appointments.size()+"");
for(int i=0;i<appointments.size();i++)
{
items.add(String.valueOf(appointments.get(i).mTitle));
Log.d("title from db",String.valueOf(appointments.get(i).mTitle));
}
adap = new EfficientAdapter(this);
adap.notifyDataSetChanged();
lvDay.setAdapter(adap);
}
public void onResume() {
super.onResume();
}
public class EfficientAdapter extends BaseAdapter implements Filterable{
LayoutInflater inflater;
Context context;
public EfficientAdapter(Context context){
inflater = LayoutInflater.from(context);
this.context = context;
}
public int getCount() {
return items.size();
}
public Object getItem(int position) {
return items.get(position);
}
public long getItemId(int position) {
return 0;
}
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView == null){
convertView = inflater.inflate(R.layout.adaptor_timetable_content, null);
holder = new ViewHolder();
holder.textLineTitle = (TextView)convertView.findViewById(R.id.textLineTitle);
holder.textLineTime = (TextView)convertView.findViewById(R.id.textLineTime);
convertView.setOnClickListener(new OnClickListener() {
private int pos = position;
public void onClick(View v) {
/* Intent i = new Intent(context,RoutingMapActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("Department", depts.get(pos).toBunlde());
getApplicationContext().startActivity(i);
}
});
convertView.setTag(holder);
}
else{
holder = (ViewHolder)convertView.getTag();
}
// Bind the data efficiently with the holder.
try{
holder.textLineTitle.setText(String.valueOf(appointments.get(position).mTitle)); holder.textLineTime.setText(String.valueOf(appointments.get(position).mStartDate));
}
catch(Exception ex){
}
return convertView;
}
public Filter getFilter() {
return null;
}
}
static class ViewHolder {
TextView textLineTitle;
TextView textLineTime;
}
}
day_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:weightSum="1"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:weightSum="1"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="wrap_content"
android:layout_weight="0.5"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="@string/bChangeDate"
android:id="@+id/bChangeDate"></Button>
<Button
android:layout_width="wrap_content"
android:layout_weight="0.5"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="@string/btnUpdateTimeTable"
android:id="@+id/bUpdateTimeTable"></Button>
</LinearLayout>
<ListView
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:id="@+id/lvDay"></ListView>
</LinearLayout>