Android学习笔记长按事件的处理

常见的长按事件

代码示例:

  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //第二步:把长按事件注册到菜单，并打开菜单
        ImageView imageView = findViewById(R.id.imageView);
        imageView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                registerForContextMenu(v);
                openContextMenu(v);
                return false;
            }
        });
    }
    //第一步：在MainActivity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("下载");
    }