AlertDialog（对话框）的基础详解

1、确定取消对话框

AlertDialog不可创建对象，要用AlertDialog.Builder builder = new Builder(conext);

AlertDialog.Builder builder = new Builder(this);  //创建对象  builder.setIcon(android.R.drawable.alert_light_frame  );  //设置头像，这里是系统里面的  builder.setTitle("你屌不屌？"); //设置标题  builder.setMessage("叼叼叼！");  //设置内容  builder.setCancelable(false);  //不能点返回  builder.setPositiveButton("是的", new OnClickListener(){       @Override    //设置确定按钮 ，注意导包import android.content.DialogInterface.OnClickListener;   public void onClick(DialogInterface dialog, int which) {    Toast.makeText(MainActivity.this, "叼叼叼", Toast.LENGTH_SHORT).show();   }  });  builder.setNegativeButton("否的", new OnClickListener() {   @Override    //设置取消按钮   public void onClick(DialogInterface dialog, int which) {    Toast.makeText(MainActivity.this, "搓搓搓", Toast.LENGTH_SHORT).show();   }  });  AlertDialog aler = builder.create();  aler.show();  //show（）

Android4.0以上AlertDialog在触摸对话框边缘外部，对话框消失
可以设置这么一条属性，当然必须先AlertDialog.Builder.create()之后才能调用这两个方法
方法一：
setCanceledOnTouchOutside(false);调用这个方法时，按对话框以外的地方不起作用。按返回键还起作用
方法二：
setCanceleable(false);调用这个方法时，按对话框以外的地方不起作用。按返回键也不起作用

2、单选对话框

<pre name="code" class="java">AlertDialog.Builder builder = new Builder(this);  builder.setTitle("你屌不屌？");  final String[] items = new String[]{"男","女"};  builder.setSingleChoiceItems(items, 0/*这里是默认被选中的，不选为-1，第一个为0*/, new OnClickListener(){   @Override    //which用户所选的下标   public void onClick(DialogInterface dialog, int which) {    Toast.makeText(MainActivity.this, "你选中："+items[which], 0).show();    dialog.dismiss();//关闭对话框   }  });  builder.create().show();

3.多选对话框

 AlertDialog.Builder builder = new Builder(this);  builder.setTitle("你屌不屌？");  final String[] items = new String[]{"男","女","妖","魔","鬼"};  final boolean[] b = new boolean[]{false,false,false,false,false};  //如果是true就是默认选中  builder.setMultiChoiceItems(items, b, new OnMultiChoiceClickListener() {   @Override   public void onClick(DialogInterface dialog, int which, boolean isChecked) {    b[which] = isChecked;  //记录你的选择   }  });  builder.setPositiveButton("确定", new OnClickListener() {   @Override   //设置确定按钮   public void onClick(DialogInterface dialog, int which) {    String text = "";    for(int i=0;i<b.length;i++){     text += b[i]?items[i]:"";    }    Toast.makeText(MainActivity.this, text, 0).show();    dialog.dismiss(); //关闭对话框   }  });  builder.create().show();

4、自定义对话框（资源在java函数中，用适配器）

1）layout里面布局xml文件：  R.layout.item_dailog

2）代码:

final String[] str1 = new String[] { "吊", "不屌", "吊炸天", "有点吊", "66666" };final int[] icon = new int[] { R.drawable.qb_20, R.drawable.qb_21, R.drawable.qb_22, R.drawable.qb_24, R.drawable.qb_25 };List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();for (int i = 0; i < str1.length; i++) {    Map<String, Object> map = new HashMap<String, Object>();    map.put("name", str1[i]);    map.put("image", icon[i]);    list.add(map); } SimpleAdapter adp = new SimpleAdapter(MainActivity.this, list, R.layout.item_dailog, new String[] { "name", "image" }, new int[] { R.id.tv_item, R.id.iv_item });    builder.setAdapter(adp, new OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {     Toast.makeText(MainActivity.this, "点击了：" + str1[which], Toast.LENGTH_SHORT).show();      dialog.dismiss();    }   });   builder.create().show();

5、自定义对话框（资源来自对话框输入，用布局）

1）layout里面布局xml文件：R.layout.item02_dailong

2）代码：

//泵布局，得到组件View diog = getLayoutInflater().inflate(R.layout.item02_dailong,null);   final EditText name = (EditText) diog.findViewById(R.id.editText1);   final EditText pass = (EditText) diog.findViewById(R.id.editText2); //setview   builder.setView(diog);//监听，这里设置一个确定键来监听   builder.setPositiveButton("确定", new OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {     String usrName = name.getText().toString();     String usrPass = pass.getText().toString();     if (usrName.equals("abc") && usrPass.equals("123")) {      Toast.makeText(MainActivity.this, "登录成东",Toast.LENGTH_SHORT).show();     }    }   });//创建并show出来   builder.create().show();

6、DatePickerDialog（时间对话框）

 //获取当前时间，作为DatePickerDialog的参数Calendar calendar = Calendar.getInstance();   int year = calendar.get(Calendar.YEAR);   int monthOfYear = calendar.get(Calendar.MONTH);   int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);//new DatePickerDialog   DatePickerDialog dpd = new DatePickerDialog(MainActivity.this,     new OnDateSetListener() {      @Override      public void onDateSet(DatePicker view, int year,int monthOfYear, int dayOfMonth) {       Toast.makeText(MainActivity.this,year + "-" + monthOfYear + "-" + dayOfMonth,Toast.LENGTH_SHORT).show();      }     }, year, monthOfYear, dayOfMonth);//show   dpd.show();