1. Using linear layout set a simple button

 & lt; LinearLayout XMLNS: android="http://schemas.android.com/apk/res/android" 
XMLNS: tools="http://schemas.android.com/tools" 
Android: layout_width="match_parent" 
Android: layout_height="match_parent" 

Android: orientation="vertical" 
Tools: context="MainActivity" & gt; 

Android: layout_width="wrap_content" 
Android: layout_height="wrap_content" 
Android: text="display dialog" 
Android: layout_gravity="center_horizontal" 
The android: onClick="click" 
/> 

Android: layout_width="wrap_content" 
Android: layout_height="wrap_content" 
Android: text="display radio button dialog" 
Android: layout_gravity="center_horizontal" 
The android: onClick="singleclick" 
/> 


 

2. Write Java code (MainActivity. Java) file:

 
Package com. Example. Dialogtest; 

import android.os.Bundle; 
The import android. The annotation. SuppressLint; 
The import android. App. The Activity; 
The import android. App. AlertDialog; 
Import android. Content. DialogInterface. 
Import android. Content. DialogInterface. An OnClickListener; 
The import android. Text. AlteredCharSequence; 
The import android. View. The Menu; 
The import android. View. The view; 
The import android. Widget. Toast; 

Public class MainActivity extends the Activity {

@ Override 
Protected void onCreate (Bundle savedInstanceState) {
Super. OnCreate (savedInstanceState); 
setContentView(R.layout.activity_main); 
} 

Public void singleclick (View v) {
//1, to create AlertDialog. Builder object, Builder class is AlertDi alog the inner class 
AlertDialog. Builder Builder=new AlertDialog. Builder (this); 
//2. Call AlertDialog. Builder method for dialog box Settings icon 
Builder. SetIcon (r. drawable. Ic_launcher);//Settings icon 
//create a radio button displays the contents of the 
String [] the items={" boy ", "girl"}; 
//builder. SetSingleChoiceItems (irems, default choice which one, when click the event) to perform 
Builder. SetSingleChoiceItems (items, 0, null); 
//3, call AlertDialog. Builder the create () method to create AlertDialog dialog 
AlertDialog dialog=builder. The create (); 
AlertDialog//4, call show () method to display a dialog 
Dialog. The show (); 

} 

Public void click View (v) {
//1, to create AlertDialog. Builder object, Builder class is AlertDi alog the inner class 
AlertDialog. Builder Builder=new AlertDialog. Builder (this); 
//2. Call AlertDialog. Builder method for dialog box Settings icon, the title, content 
Builder. SetIcon (r. drawable. Ic_launcher);//Settings icon 
Builder. SetTitle (" prompt dialog ");//set the title 
Builder. SetMessage (" I am your little cute! ! ");//set the content 

//set a "ok" button for dialog -- the second parameter indicates the current user to select "ok" to execute when the event 
//when press the confirm execution onClick method in the class A of 
Builder. SetPositiveButton (" sure, "the new A ()); 

//set a "cancel" button for dialog 
Builder. SetNegativeButton (" cancel ", the new B ()); 

//3, call AlertDialog. Builder the create () method to create AlertDialog dialog 
AlertDialog dialog=builder. The create (); 
AlertDialog//4, call show () method to display a dialog 
Dialog. The show (); 

} 

//create the listener to monitor user press the confirm button 
@ SuppressLint (" ShowToast ") 
Class A, implements an OnClickListener {

@ Override 
Public void onClick (DialogInterface arg0, int arg1) {
//Toast Auto - generated method stub 
//makeTest (this, to display the text information, information display length) 
//the information time has two choices: 1. The Toast. LENGTH_SHORT 2. Toast. LENGTH_LONG 
Toast Toast=Toast. MakeText (MainActivity. This, "you press the determined", Toast. LENGTH_SHORT); 
Toast. The show (); 
} 
} 

//create the listener to listen the user press the cancel button 
@ SuppressLint (" ShowToast ") 
Class B implements an OnClickListener {

@ Override 
Public void onClick (DialogInterface arg0, int arg1) {
//Toast Auto - generated method stub 
//makeTest (this, to display the text information, information display length) 
//the information time has two choices: 1. The Toast. LENGTH_SHORT 2. Toast. LENGTH_LONG 
Toast Toast=Toast. MakeText (MainActivity. This, you press the "cancel", Toast. LENGTH_SHORT); 
//note: MainActivity. This, why do you want to add MainActivity -- 
Toast. The show (); 
} 

Class C implements an OnClickListener {

@ Override 
//the second parameter in which a radio button click is 
Public void onClick (DialogInterface dialog, int which) {
//TODO Auto - generated method stub 
If (which==0) {
//makeTest (this, to display the text information, information display length) 
//the information time has two choices: 1. The Toast. LENGTH_SHORT 2. Toast. LENGTH_LONG 
Toast Toast=Toast. MakeText (MainActivity. This, you select the "male", Toast. LENGTH_SHORT); 
Toast. The show (); 
} else {
//makeTest (this, to display the text information, information display length) 
//the information time has two choices: 1. The Toast. LENGTH_SHORT 2. Toast. LENGTH_LONG 
Toast Toast=Toast. MakeText (MainActivity. This, you select the "female", Toast. LENGTH_SHORT); 
Toast. The show (); 
} 
} 

} 
} 

@ Override 
Public Boolean onCreateOptionsMenu (Menu Menu) {
//to Inflate the menu; This adds the items to the action bar if it is present. 
GetMenuInflater (). Inflate (R.m emu. Main, menu). 
return true; 
} 

} 

CodePudding user response:

Dialog recommended DialogFragment implementation