Android implemented in accordance with the long right-click menu pops

Scenes

effect

 

 

Note:

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achieve

Layout to LinearLayout, by android: orientation = "vertical"> to vertical layout.

Then add a ImageView, and set the id attribute and the image source.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".LongClickActivity">

    <ImageView
        android:id="@+id/image"
        android:src="@drawable/dog"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

然后来到Activity,首先在activity中重写onCreateContextMenu方法，此方法能新增菜单，并添加菜单项

    //在activity中重写onCreateContextMenu菜单，为菜单添加选项值
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        menu.add("收藏");
        menu.add("举报");
    }

然后在onCreate方法中将长按事件注册到菜单中并打开菜单。

 

   @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_long_click);
        //将长按事件注册到菜单中，并打开菜单
        ImageView imageView = (ImageView) findViewById(R.id.image);
        imageView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                //注册菜单
                registerForContextMenu(v);
                //打开菜单
                openContextMenu(v);
                return true;
            }
        });
    }

完整示例代码

package com.badao.relativelayouttest;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.ContextMenu;
import android.view.View;
import android.widget.ImageView;

public class LongClickActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_long_click);
        //将长按事件注册到菜单中，并打开菜单
        ImageView imageView = (ImageView) findViewById(R.id.image);
        imageView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                //注册菜单
                registerForContextMenu(v);
                //打开菜单
                openContextMenu(v);
                return true;
            }
        });
    }

    //在activity中重写onCreateContextMenu菜单，为菜单添加选项值
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        menu.add("收藏");
        menu.add("举报");
    }
}