ContextMenu菜单

快来打我* 2022-09-23 11:51 110阅读 0赞

创建ContexMenu菜单方法一：

布局：

package com.example.contextmenu;
    
    import java.util.ArrayList;
    
    import android.R.integer;
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.ContextMenu;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.ContextMenu.ContextMenuInfo;
    import android.widget.ArrayAdapter;
    import android.widget.ListView;
    import android.widget.Toast;
    
    
    public class MainActivity extends Activity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            showListView();
        }
    private void showListView(){
    	ListView listView=(ListView) findViewById(R.id.listView1);
    	ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,getData());
    	listView.setAdapter(adapter);
    	this.registerForContextMenu(listView);
    }
    private ArrayList<String> getData(){
    	ArrayList<String> list =new ArrayList<String>();
    	for(int i=0;i<5;i++){
    		list.add("文件"+(i+1));
    	}
    	return list;
    }
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
    		ContextMenuInfo menuInfo) {
    	// TODO Auto-generated method stub
    	
    	menu.setHeaderTitle("文件操作");
    	menu.setHeaderIcon(R.drawable.ic_launcher);
    	menu.add(1,1,1,"复制");
    	menu.add(1,2,1,"剪切");
    	menu.add(1,3,1,"粘贴");
    	menu.add(1,4,1,"重命名");
    	super.onCreateContextMenu(menu, v, menuInfo);
    }
    @Override
    public boolean onContextItemSelected(MenuItem item) {
    	// TODO Auto-generated method stub
    	switch (item.getItemId()) {
    	case 1:
    		Toast.makeText(this,"点击复制",Toast.LENGTH_SHORT).show();
    		break;
    case 2:
    	Toast.makeText(this,"点击剪切",Toast.LENGTH_SHORT).show();
    		break;
    case 3:
    	Toast.makeText(this,"点击粘贴",Toast.LENGTH_SHORT).show();
    	break;
    case 4:
    	Toast.makeText(this,"点击重命名",Toast.LENGTH_SHORT).show();
    	break;
    	default:
    		break;
    	}
    	return super.onContextItemSelected(item);
    }
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.main, menu);
            return true;
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            // Handle action bar item clicks here. The action bar will
            // automatically handle clicks on the Home/Up button, so long
            // as you specify a parent activity in AndroidManifest.xml.
            int id = item.getItemId();
            if (id == R.id.action_settings) {
                return true;
            }
            return super.onOptionsItemSelected(item);
        }
    }

创建ContexMenu菜单方法二：

menu菜单：

布局：

package com.example.contextmenu;
    
    import java.util.ArrayList;
    
    import android.R.integer;
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.ContextMenu;
    import android.view.Menu;
    import android.view.MenuInflater;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.ContextMenu.ContextMenuInfo;
    import android.widget.ArrayAdapter;
    import android.widget.ListView;
    import android.widget.Toast;
    
    
    public class MainActivity extends Activity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            showListView();
        }
    private void showListView(){
    	ListView listView=(ListView) findViewById(R.id.listView1);
    	ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,getData());
    	listView.setAdapter(adapter);
    	this.registerForContextMenu(listView);
    }
    private ArrayList<String> getData(){
    	ArrayList<String> list =new ArrayList<String>();
    	for(int i=0;i<5;i++){
    		list.add("文件"+(i+1));
    	}
    	return list;
    }
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
    		ContextMenuInfo menuInfo) {
    	// TODO Auto-generated method stub
    	
    	menu.setHeaderTitle("文件操作");
    	menu.setHeaderIcon(R.drawable.ic_launcher);
    	MenuInflater inflater=getMenuInflater();
    	inflater.inflate(R.menu.main, menu);
    //	menu.add(1,1,1,"复制");
    //	menu.add(1,2,1,"剪切");
    //	menu.add(1,3,1,"粘贴");
    //	menu.add(1,4,1,"重命名");
    	super.onCreateContextMenu(menu, v, menuInfo);
    }
    @Override
    public boolean onContextItemSelected(MenuItem item) {
    	// TODO Auto-generated method stub
    	switch (item.getItemId()) {
    	case R.id.item_menu1:
    		Toast.makeText(this,"点击复制",Toast.LENGTH_SHORT).show();
    		break;
    case R.id.item_menu2:
    	Toast.makeText(this,"点击剪切",Toast.LENGTH_SHORT).show();
    		break;
    case R.id.item_menu3:
    	Toast.makeText(this,"点击粘贴",Toast.LENGTH_SHORT).show();
    	break;
    case R.id.item_menu4:
    	Toast.makeText(this,"点击重命名",Toast.LENGTH_SHORT).show();
    	break;
    	default:
    		break;
    	}
    	return super.onContextItemSelected(item);
    }
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.main, menu);
            return true;
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            // Handle action bar item clicks here. The action bar will
            // automatically handle clicks on the Home/Up button, so long
            // as you specify a parent activity in AndroidManifest.xml.
            int id = item.getItemId();
            if (id == R.id.action_settings) {
                return true;
            }
            return super.onOptionsItemSelected(item);
        }
    }