Android中实现长按照片弹出右键菜单

待我称王封你为后i 2023-10-08 11:56 12阅读 0赞

## 场景 ##

### 效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

注：

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[https://blog.csdn.net/badao\_liumang\_qizhi][https_blog.csdn.net_badao_liumang_qizhi]  
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## 实现 ##

将布局改为LinearLayout，并通过android:orientation="vertical">设置为垂直布局。

然后添加一个ImageView，并设置id属性和图片源。

<?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");
        }
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200109204103433.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi