Basic Components of Android applications (1)

General page:

 

Note: to change the method between buttons, you must: android: onClick = "clearNoti" to add the corresponding method.

1. When you click the status bar button:

Public void Notification (View v ){

ShowNotification ("sent SMS", "5557", "I Like You", R. drawable. ic_launcher, R. drawable. ic_launcher );
}
Public void showNotification (String tickerText, String contentTitle, String contentText, int iconId, int notiId ){
Icationicationmanager = (notificationManager) getSystemService (NOTIFICATION_SERVICE );
// Create a Notification
Notification notification = new Notification ();
// Set the content of the sent message
Notification. icon = iconId;
// Set the sent message
Notification. tickerText = tickerText;
// Set the notification time
Notification. when = System. currentTimeMillis ();
// Set the default voice or vibration, Light effect, and
Notification. defaults = Notification. DEFAULT_VIBRATE; // vibration effect
// Step 3: The PendingIntent Android system is responsible for maintenance
PendingIntent pendingIntent = PendingIntent. getActivity (this, 0, getIntent (), 0 );
// Notification notification = new Notification (R. drawable. ic_launcher, "new Message available", System. currentTimeMillis ());
// Step 4; set more detailed information
Notification. setLatestEventInfo (this, contentTitle, contentText, pendingIntent );
// Step 5: Use the icationicationmanager object's notify method to display the Notification message. The Notification ID must be specified.
Icationicationmanager. notify (notiId, notification );

}:

2. When you click the clear status button:

// Clear the operation
Public void clearNoti (View v ){

 

Icationicationmanager. cancelAll (); // clear all
}

 

3. When you click Create a pair DiaLog box: public void DiaLog (){
AlertDialog alertDialog = new AlertDialog. Builder (this)
. SetIcon (R. drawable. mw)
. SetTitle ("DiaLog"). setMessage ("whether to create a file ")
. SetPositiveButton ("OK", new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){
 
New AlertDialog. Builder (MainActivity. this). setMessage ("You have clicked the confirm button and the file has been created"). show ();
}
})
. SetNegativeButton ("cancel", new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){
New AlertDialog. Builder (MainActivity. this)
. SetMessage ("you have selected the cancel button, this file will not be created"). create ()
. Show ();

}

}). Show ();
}

 

4. Click the simple List dialog box

Public void Simplelistdialog (View v ){
Final String items [] = {"java", "php", "3g", ". net "};
AlertDialog alertDialog = new AlertDialog. Builder (this)
. SetTitle ("simple List dialog box"). setItems (items, new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){
Toast. makeText (getApplicationContext (), "dear, your favorite subjects are:" + items [which], Toast. LENGTH_LONG). show ();

}
}). Show ();

}

5. Click the radio List dialog box.

Public void Radiolistdialog (View v ){
Final String items [] = {"java", "php", "3g", ". net "};
AlertDialog alertDialog = new AlertDialog. Builder (this). setTitle (" ")
//. SetSingleChoiceItems (items, checkedItem, listener)
//. SetSingleChoiceItems (itemsId, checkedItem, listener)
//. SetSingleChoiceItems (cursor, checkedItem, labelColumn, listener) labelColumn if the data source is a dataset
// A column in the dataset is loaded as a list box in the List dialog box. This parameter indicates the column name (field name)

. SetSingleChoiceItems (items, 1, new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){
Toast. makeText (getApplicationContext (), "dear, your favorite subjects are:" + items [which], Toast. LENGTH_LONG). show ();

}
}). Show ();
}

 
 

 

7. Click the multiple choice List dialog box.

Public void Multiselectlistdialog (View v ){
Final String items [] = {"Java", "PHP", "3G", ". NET "};

New AlertDialog. Builder (this). setTitle ("Multi-choice List dialog box ")
//. SetMultiChoiceItems (itemsId, checkedItems, listener)
//. SetMultiChoiceItems (cursor, isCheckedColumn, labelColumn, listener)
. SetMultiChoiceItems (items, new boolean [] {false, true, true, false}, new DialogInterface. OnMultiChoiceClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which, boolean isChecked ){

If (isChecked ){
Toast. makeText (getApplicationContext (), "dear, the subjects you selected are:" + items [which], Toast. LENGTH_LONG). show ();
}

}
}). SetPositiveButton ("OK", new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){
Toast. makeText (getApplicationContext (), "dear, your favorite subjects include:", Toast. LENGTH_LONG). show ();
}
}). Show ();
}

8. Click the progress bar

Public void ProgressDialog (View v ){
Handler = new Handler (){
@ Override
Public void handleMessage (Message msg ){

Super. handleMessage (msg );
Switch (msg. what ){
Case PRO:
If (PRO> = MAX_PROGRESS ){
// Reset
Progress = 0;
ProgressDialog. dismiss (); // destruction dialog box
 
} Else {
Progress ++;
ProgressDialog. incrementProgressBy (1 );
// Delayed message sending
Handler. sendEmptyMessageDelayed (PRO, 100 );
}
Break;
Default:
Break;
}
}
};
ProgressDialog = new ProgressDialog (this );
ProgressDialog. setIcon (R. drawable. mw );
ProgressDialog. setTitle ("processing data ......");
ProgressDialog. setMessage ("Please wait .....");
ProgressDialog. setProgressStyle (ProgressDialog. STYLE_SPINNER); // set the progress bar dialog box (horizontal, spin)
// Set the maximum value
ProgressDialog. setMax (MAX_PROGRESS );
ProgressDialog. setButton ("pause", new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){
Handler. removeMessages (PRO );

}
});
ProgressDialog. setButton2 ("cancel", new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){

// Delete A Message Queue
Handler. removeMessages (PRO );
// Initial recovery progress Value
Progress = 0;
ProgressDialog. setProgress (progress );
}
});
// Display
ProgressDialog. show ();
// It must be set after show. A bug may occur before show.
Progress = (progress> 0 )? Progress: 0;
ProgressDialog. setProgress (progress );

// Thread
Handler. sendEmptyMessage (PRO );
}

Another effect is:

 

9. Click the custom table dialog box.

Public void MyDialog (View v ){

LayoutInflater layoutInflater = getLayoutInflater ();
View view = layoutInflater. inflate (R. layout. activity_main, null); // R. layout. activty_main custom layout file can be customized by yourself.
New AlertDialog. Builder (this). setView (view). setTitle ("Custom dialog box"). setPositiveButton ("confirm button", new DialogInterface. OnClickListener (){

@ Override
Public void onClick (DialogInterface dialog, int which ){
// Process

}
}). Show ();

}