Question

我想知道如何使用菜单中的GridView选项开发自定义下拉图标菜单。

这是我的自定义向下图标代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#c2ec97"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="viralandroid.com.androidxmluserinterfacetutorial.MainActivity">

    <Button
        android:id="@+id/dropdown_custom_icon_menu"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#5bace6"
        android:drawableRight="@android:drawable/arrow_down_float"
        android:onClick="verticalDropDownIconMenu"
        android:padding="16dp"
        android:text="DropDown\t"
        android:textColor="#eee" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/dropdown_custom_icon_menu"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Android Custom Vertical Dropdown Menu IconsAndroid Custom Vertical. Break line after Icon in Menu Item

机器人。下拉菜单IconsAndroid自定义垂直下拉列表。在android示例中带有图标的弹出菜单。 Android自定义垂直下拉菜单图标。 Android自定义垂直下拉菜单图标＆＃34; /＆GT;

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:text="Android Custom Vertical Dropdown Menu Icons" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/vertical_dropdown_icon_menu_items"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/dropdown_custom_icon_menu"
        android:background="#333"
        android:orientation="vertical"
        android:padding="3dp"
        android:visibility="invisible">

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:background="@drawable/onclick_press_color"
            android:onClick="menuItemClick"
            android:paddingBottom="5dp"
            android:paddingLeft="26dp"
            android:paddingRight="26dp"
            android:paddingTop="5dp"
            android:src="@drawable/ic_action_send"
            android:text="Android Vertical Custom DropDown Menu" />

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_marginTop="2dp"
            android:background="@drawable/onclick_press_color"
            android:onClick="menuItemClick"
            android:paddingBottom="5dp"
            android:paddingLeft="26dp"
            android:paddingRight="26dp"
            android:paddingTop="5dp"
            android:src="@drawable/ic_action_attach"
            android:text="Android Vertical Custom DropDown Menu" />

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_marginTop="2dp"
            android:background="@drawable/onclick_press_color"
            android:onClick="menuItemClick"
            android:paddingBottom="5dp"
            android:paddingLeft="26dp"
            android:paddingRight="26dp"
            android:paddingTop="5dp"
            android:src="@drawable/ic_action_mail"
            android:text="Android Vertical Custom DropDown Menu" />

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_marginTop="2dp"
            android:background="@drawable/onclick_press_color"
            android:onClick="menuItemClick"
            android:paddingBottom="5dp"
            android:paddingLeft="26dp"
            android:paddingRight="26dp"
            android:paddingTop="5dp"
            android:src="@drawable/ic_action_refresh"
            android:text="Android Vertical Custom DropDown Menu" />

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_marginTop="2dp"
            android:background="@drawable/onclick_press_color"
            android:onClick="menuItemClick"
            android:paddingBottom="5dp"
            android:paddingLeft="26dp"
            android:paddingRight="26dp"
            android:paddingTop="5dp"
            android:src="@drawable/ic_action_attach"
            android:text="Android Vertical Custom DropDown Menu" />

        <ImageButton
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_marginTop="2dp"
            android:background="@drawable/onclick_press_color"
            android:onClick="menuItemClick"
            android:paddingBottom="5dp"
            android:paddingLeft="26dp"
            android:paddingRight="26dp"
            android:paddingTop="5dp"
            android:src="@drawable/ic_action_mail"
            android:text="Android Vertical Custom DropDown Menu" />

    </LinearLayout>
</RelativeLayout>

这就是我所拥有的：这就是我想要的：

Answer 1

您需要使用微调器，这将导致使用适配器和几个布局。首先在您的activity_main.xml中：

import { SplashScreen } from 'directory/splash-screen';

然后在/ res / layout文件夹下创建一个新布局，只需将其命名为custom_spinner_layout.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">

    <Spinner
        android:id="@+id/sSpinner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="20dp" />

</RelativeLayout>

然后在你的MainActivity.java中你需要做你的代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/myImageView"
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:padding="10dp"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:padding="10dp"
        android:text="test"
        android:textColor="#000" />
</LinearLayout>

您需要创建一个新的java类文件，并将其命名为CustomAdapter.java，这将从BaseAdapter扩展：

    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.Spinner;
    import android.widget.Toast;

    public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener{


        String[] carNames={"Chevy","Dodge","Mazda","Honda","BMW","Toyota"};
        int icons[] = {R.drawable.Chevy, R.drawable.Dodge, R.drawable.Mazda, R.drawable.Honda, R.drawable.BMW, R.drawable.Toyota};

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);


            Spinner spin = (Spinner) findViewById(R.id.sSpinner);
            spin.setOnItemSelectedListener(this);

            CustomAdapter customAdapter=new CustomAdapter(getApplicationContext(),icons,carNames);
            spin.setAdapter(customAdapter);
        }

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1, int position,long id) {
//your code goes here///
            Toast.makeText(getApplicationContext(), carNames[position], Toast.LENGTH_LONG).show();
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // something happens here
        }
    }

您可以获取以下工作代码： https://github.com/edgebasis/spinnerExample

如何使用Gridview创建带有菜单的垂直下拉列表？

1 个答案: