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             @Override110             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                     @Override118                     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             @Override130             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                     @Override138                     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     @Override153     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     @Override161     public boolean onOptionsItemSelected(MenuItem item) {162         // Handle action bar item clicks here. The action bar will163         // automatically handle clicks on the Home/Up button, so long164         // 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         @Override181         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 }