AlertDialog.Builder提示框_alertdialog.builder( 做为提示工具-优快云博客

本文链接：https://blog.youkuaiyun.com/q714699280/article/details/105446182

本文介绍了一种在Android应用中实现复选框功能和日期选择器的方法。通过监听用户选择，动态构建对话框，展示用户兴趣爱好，并允许用户选择特定日期，最后将选择结果以Toast形式显示。

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慢慢增加

（1）复选框

//上边代码是 监听点击按钮
final StringBuilder stringBuilder=new StringBuilder();
stringBuilder.append("我的爱好是：");

AlertDialog.Builder builder=new AlertDialog.Builder(dialog.this);
builder.setTitle("选择你的爱好");

final String[] aihao=new String[] {"打球","上网","打游戏"};
final boolean[] bitem={false,false,false};

builder.setMultiChoiceItems(aihao, bitem, new DialogInterface.OnMultiChoiceClickListener(){             
                @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                        bitem[which]=isChecked;
                    }
                });

 builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        for (int i=0;i<aihao.length;i++){
                            if(bitem[i]){
                                stringBuilder.append(aihao[i]);
                            }
                        }
                        Toast.makeText(dialog.this,stringBuilder.toString(),Toast.LENGTH_SHORT).show();
                        dialog.dismiss();
                    }
                });

                builder.show();

（2）日期选择

 /**
     * 展示时间dialog
     */
    public void showTimeDialog(){
        calendar = Calendar.getInstance();
        year = calendar.get(Calendar.YEAR);
        month =calendar.get(Calendar.MONTH);
        day = calendar.get(Calendar.DAY_OF_MONTH);
        datePickerDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                String text = year + "-" + month + "-" + day;
                Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();
            }
        },year,month,day);
        datePickerDialog.show();