AlertDialog Demo

AlertDialod like java awt dialog , when a event actived  the activity will display a dialog , it can contain many views not only text or buttons ,here is a demo show us how to use AlertDialog to creat multi choices ,single choice .

  1 package com.example.alertdialog_01;
  2
  3 import android.support.v7.app.ActionBarActivity;
  4 import android.support.v7.app.ActionBar;
  5 import android.support.v4.app.Fragment;
  6 import android.app.AlertDialog;
  7 import android.app.AlertDialog.Builder;
  8 import android.content.DialogInterface;
  9 import android.content.DialogInterface.OnMultiChoiceClickListener;
 10 import android.os.Bundle;
 11 import android.view.LayoutInflater;
 12 import android.view.Menu;
 13 import android.view.MenuItem;
 14 import android.view.View;
 15 import android.view.View.OnClickListener;
 16 import android.view.ViewGroup;
 17 import android.widget.Button;
 18 import android.widget.Toast;
 19 import android.os.Build;
 20
 21 public class MainActivity extends ActionBarActivity {
 22
 23     @Override
 24     protected void onCreate(Bundle savedInstanceState) {
 25         super.onCreate(savedInstanceState);
 26         setContentView(R.layout.activity_main);
 27
 28         if (savedInstanceState == null) {
 29             getSupportFragmentManager().beginTransaction()
 30                     .add(R.id.container, new PlaceholderFragment()).commit();
 31         }
 32         Button b1 = (Button) findViewById(R.id.button1);
 33         Button b2 = (Button) findViewById(R.id.button2);
 34         Button b3 = (Button) findViewById(R.id.button3);
 35         Button b4 = (Button) findViewById(R.id.button4);
 36         Button b5 = (Button) findViewById(R.id.button5);
 37         b1.setOnClickListener(new OnClickListener() {
 38
 39             @Override
 40             public void onClick(View arg0) {
 41                 AlertDialog.Builder ab = new AlertDialog.Builder(MainActivity.this);
 42
 43                 ab.setNegativeButton("Negative", new DialogInterface.OnClickListener() {
 44
 45                     @Override
 46                     public void onClick(DialogInterface arg0, int arg1) {
 47                         Toast.makeText(MainActivity.this, "Negative", Toast.LENGTH_SHORT).show();
 48
 49                     }
 50                 });
 51
 52                 ab.setPositiveButton("Positive", new DialogInterface.OnClickListener() {
 53
 54                     @Override
 55                     public void onClick(DialogInterface arg0, int arg1) {
 56                         Toast.makeText(MainActivity.this, "Positive", Toast.LENGTH_SHORT).show();
 57
 58                     }
 59                 });
 60
 61
 62
 63
 64
 65                 /**
 66                  * set Attribute of dialog must before create it
 67                  * eg: title message button and so on
 68                  *
 69                  * */
 70
 71                 ab.setTitle("MyFirstAlertDialog!");
 72                 ab.setMessage("HelloJava");
 73                 AlertDialog ad = ab.create();
 74                 ad.show();
 75             }
 76         });
 77
 78
 79             final String[] sc  = {
 80                     "NanJing",
 81                     "BeiJing",
 82                     "DongJing"
 83             };
 84         b2.setOnClickListener(new View.OnClickListener() {
 85
 86             @Override
 87             public void onClick(View arg0) {
 88             AlertDialog.Builder adb = new AlertDialog.Builder(MainActivity.this);
 89
 90
 91             adb.setTitle("Second");
 92             adb.setItems(sc, new DialogInterface.OnClickListener() {
 93
 94                 @Override
 95                 public void onClick(DialogInterface arg0, int arg1) {
 96                     Toast.makeText(MainActivity.this, sc[arg1], Toast.LENGTH_SHORT).show();
 97
 98                 }
 99             });
100
101             AlertDialog ad = adb.create() ;
102             ad.show();
103
104             }
105         });
106
107         b4.setOnClickListener(new OnClickListener() {
108
109             @Override
110             public void onClick(View arg0) {
111                 AlertDialog.Builder ab = new AlertDialog.Builder(MainActivity.this);
112                 ab.setTitle("SelectCity");
113
114
115                 ab.setSingleChoiceItems(sc, 0, new DialogInterface.OnClickListener() {
116
117                     @Override
118                     public void onClick(DialogInterface arg0, int arg1) {
119                         Toast.makeText(MainActivity.this, "wu", Toast.LENGTH_SHORT).show();
120
121                     }
122                 });
123                 AlertDialog ad = ab.create()    ;
124                 ad.show();
125             }
126         });
127         b5.setOnClickListener(new OnClickListener() {
128
129             @Override
130             public void onClick(View arg0) {
131                 AlertDialog.Builder db = new AlertDialog.Builder(MainActivity.this);
132
133
134                 db.setTitle("Muti");
135                 db.setMultiChoiceItems(sc,null, new OnMultiChoiceClickListener() {
136
137                     @Override
138                     public void onClick(DialogInterface arg0, int arg1, boolean arg2) {
139                         Toast.makeText(MainActivity.this, sc[arg1], Toast.LENGTH_SHORT).show();;
140
141                     }
142                 });
143
144                 AlertDialog ad = db.create() ;
145                 ad.show();
146
147             }
148         });
149
150     }
151
152     @Override
153     public boolean onCreateOptionsMenu(Menu menu) {
154
155         // Inflate the menu; this adds items to the action bar if it is present.
156         getMenuInflater().inflate(R.menu.main, menu);
157         return true;
158     }
159
160     @Override
161     public boolean onOptionsItemSelected(MenuItem item) {
162         // Handle action bar item clicks here. The action bar will
163         // automatically handle clicks on the Home/Up button, so long
164         // as you specify a parent activity in AndroidManifest.xml.
165         int id = item.getItemId();
166         if (id == R.id.action_settings) {
167             return true;
168         }
169         return super.onOptionsItemSelected(item);
170     }
171
172     /**
173      * A placeholder fragment containing a simple view.
174      */
175     public static class PlaceholderFragment extends Fragment {
176
177         public PlaceholderFragment() {
178         }
179
180         @Override
181         public View onCreateView(LayoutInflater inflater, ViewGroup container,
182                 Bundle savedInstanceState) {
183             View rootView = inflater.inflate(R.layout.fragment_main, container,
184                     false);
185             return rootView;
186         }
187     }
188
189 }

AlertDialog Demo