new AlertDialog.Builder(MainActivity.this)                .setTitle("aaa")                .setIcon(R.drawable.ic_launcher)                .setMessage("next")                .setPositiveButton("确定按钮",                        new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialog,                                    int which) {                                // TODO Auto-generated method stub                            }                        }).setNegativeButton("普通按钮", new DialogInterface.OnClickListener() {                                                        @Override                            public void onClick(DialogInterface dialog, int which) {                                // TODO Auto-generated method stub                                                            }                        }).setNeutralButton("取消按钮", new DialogInterface.OnClickListener() {                                                        @Override                            public void onClick(DialogInterface dialog, int which) {                                // TODO Auto-generated method stub                                                            }                        }).show();

 列表项的对话框

private void itemDialog(){        final String[] levle = {"1","2","3"};        new AlertDialog.Builder(MainActivity.this)        .setTitle("选择级别")        //添加取消按钮,没有写事件        .setNeutralButton("取消", new DialogInterface.OnClickListener() {                        @Override            public void onClick(DialogInterface dialog, int which) {                // TODO Auto-generated method stub                            }        })        //添加列表项  参数分别为数据，事件        .setItems(levle, new DialogInterface.OnClickListener() {                        @Override            //点击列表项会把结果显示到tv里            public void onClick(DialogInterface dialog, int which) {                MainActivity.this.tv.setText("选择的级别是"+levle[which]);            }        }).show();    }

 复选对话框

private void muliItem(){        final String[] data ={"1","2","3"};        boolean[] b = {
   true,false,false};        new AlertDialog.Builder(MainActivity.this)        .setTitle("ok")        //传入的参数分别是数据，默认选中状态，事件 　　　　　.setMultiChoiceItems(data, b, new OnMultiChoiceClickListener() {                        @Override　　　　　　　　 public void onClick(DialogInterface dialog, int which, boolean isChecked) {                String msg ="";                for (int i = 0; i < data.length; i++) {                    if(i==which && isChecked){                        msg += data[which];                    }                }                MainActivity.this.tv.append(msg);                            }        }).setPositiveButton("确定", new DialogInterface.OnClickListener() {                        @Override            public void onClick(DialogInterface dialog, int which) {                // TODO Auto-generated method stub            }        }).show();    }

 用反射技术防止对话框意外关闭

//防止对话框意外关闭    private void setCloseable(DialogInterface dialog,boolean b) {        // TODO Auto-generated method stub        Field field ;        try {            field = dialog.getClass().getSuperclass().getDeclaredField("mShowing");            field.setAccessible(true);            field.set(dialog,b);        } catch (NoSuchFieldException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IllegalAccessException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IllegalArgumentException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }

调用的时候直接调用就可以，传入的值为false就是不能关，true就是可以关闭