Android—AlertDialog提示信息

怼烎@ 2022-09-24 05:13 183阅读 0赞

一、

content\_main.xml

MainActivity.java

public void DialogClick1(View v)
        {
            //创建一个提示对话框的创造者
            AlertDialog.Builder builder=new AlertDialog.Builder(this);
            builder.setTitle("提示");
            builder.setMessage("您有女朋友吗");
            builder.setIcon(R.mipmap.ic_launcher);
            //正面按钮
            builder.setPositiveButton("有", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, "你可以走了", Toast.LENGTH_SHORT).show();
                }
            });
            //反面按钮
            builder.setNegativeButton("没有", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, "欢迎加入单身俱乐部", Toast.LENGTH_SHORT).show();
                }
            });
            //中立按钮
            builder.setNeutralButton("隐藏", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this,"有没有并不重要",Toast.LENGTH_SHORT).show();
                }
            });
            //AlertDialog dialog= builder.create();
            //dialog.show();
            builder.show();
        }

运行结果：

![Center][]

二、

content\_main.xml

MainActivity.java

public void DialogClick2(View v){
            AlertDialog.Builder builder=new AlertDialog.Builder(this);
            builder.setTitle("请选择一个平台：");
            final String[]items={"Android","IOS","Window Phone"};
            builder.setItems(items, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this,items[which],Toast.LENGTH_SHORT).show();
                }
            });
            builder.show();
        }

运行结果：

![Center 1][]

三、

content\_main.xml

MainActivity.java

public void DialogClick3(View v){
            AlertDialog.Builder builder=new AlertDialog.Builder(this);
            builder.setTitle("请选择一个平台：");
            final ArrayList<String>List=new ArrayList<String>();
            final String[]items={"Android","IOS","Window Phone"};
            builder.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                    if(isChecked)
                    {
                        List.add(items[which]);
                    }
                    else {
                        List.remove(items[which]);
                    }
                }
            });
            //正面按钮
            builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    Toast.makeText(MainActivity.this, List.toString(), Toast.LENGTH_SHORT).show();
                    dialog.dismiss();
                }
            });
            //反面按钮
            builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    List.clear();
                    dialog.dismiss();
                }
            });
            builder.show();
        }

运行结果：

![Center 2][]

[Center]: /images/20220719/8daf2615728347de90959397c51ae5f3.png
[Center 1]: /images/20220719/2ee3031b8f7e4da89b8985e3a0e71ff8.png
[Center 2]: /images/20220719/d8455fc774e44662a38b43ade0a647a9.png