Android使用PopupMenu实现下拉框效果

迷南。 2023-06-16 01:51 138阅读 0赞

首先在res中新建menu文件夹，新建文件menu.xml

<?xml version="1.0" encoding="utf-8"?>
    <menu xmlns:android="http://schemas.android.com/apk/res/android">
        <item
            android:id="@+id/item1"
            android:orderInCategory="100"
            android:title="Item1"/>
        <item
            android:id="@+id/item2"
            android:orderInCategory="101"
            android:title="Item2"/>
        <item
            android:id="@+id/item3"
            android:orderInCategory="102"
            android:title="Item3"/>
    </menu>

ImageButton btn = (ImageButton) findViewById(R.id.select);
            final EditText et = findViewById(R.id.editText);
            btn .setOnClickListener(new View.OnClickListener() { 
                @Override
                public void onClick(View v) { 
                    PopupMenu pm = new PopupMenu(MainActivity.this, et);
                    pm.getMenuInflater().inflate(R.menu.menu, pm.getMenu());
    
                    pm.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() { 
                        @Override
                        public boolean onMenuItemClick(MenuItem item) { 
                            et.setText(item.getTitle());
                            return false;
                        }
                    });
                    pm.show();
                }
            });

实现效果如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1N1bnhpYW9saW4yMDE2_size_16_color_FFFFFF_t_70]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1N1bnhpYW9saW4yMDE2_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191123143611457.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1N1bnhpYW9saW4yMDE2,size_16,color_FFFFFF,t_70