Android中Dialog自定义上下文花式菜单

这是一个类似于qq里面长按消息弹出菜单的效果，菜单跟着item动
闲话不说，上代码
先自定义一个dialog

import android.app.dialog;
import android.content.context;
import android.os.bundle;
import android.view.view;
import android.widget.textview;

import io.dcloud.h5b79c397.r;

/**
 * created by administrator on 2017/9/19 0019.
 */

public class selfdialog extends dialog {
  private textview copy;//确定按钮
  private textview del;//取消按钮
  private onnoonclicklistener noonclicklistener;//取消按钮被点击了的监听器
  private onyesonclicklistener yesonclicklistener;//确定按钮被点击了的监听器
  public selfdialog(context context) {
    super(context, r.style.mydialog);
  }

  public void setnoonclicklistener(string str, onnoonclicklistener onnoonclicklistener) {
    if (str != null) {
      //nostr = str;
    }
    this.noonclicklistener = onnoonclicklistener;
  }
  public void setyesonclicklistener(string str, onyesonclicklistener onyesonclicklistener) {
    if (str != null) {
      //yesstr = str;
    }
    this.yesonclicklistener = onyesonclicklistener;
  }
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.layout_noticeactivity_dialog);
    //按空白处不能取消动画
    setcanceledontouchoutside(true);

    //初始化界面控件
    initview();
    //初始化界面数据
    //初始化界面控件的事件
    initevent();
  }
  private void initevent() {
    //设置确定按钮被点击后，向外界提供监听
    del.setonclicklistener(new view.onclicklistener() {
      @override
      public void onclick(view v) {
        if (yesonclicklistener != null) {
          yesonclicklistener.onyesclick();
        }
      }
    });
    //设置取消按钮被点击后，向外界提供监听
    copy.setonclicklistener(new view.onclicklistener() {
      @override
      public void onclick(view v) {
        if (noonclicklistener != null) {
          noonclicklistener.onnoclick();
        }
      }
    });
  }
  private void initview() {
    del = (textview) findviewbyid(r.id.del);
    copy = (textview) findviewbyid(r.id.text);

  }

  public interface onyesonclicklistener {
    public void onyesclick();
  }

  public interface onnoonclicklistener {
    public void onnoclick();
  }
}

然后看dialog里面的布局文件

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="horizontal">

  <textview
    android:text="复制"
    android:clickable="true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/text"
    android:drawabletop="@mipmap/collect"/>

  <textview

    android:layout_marginleft="15dp"
    android:clickable="true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="删除"
    android:id="@+id/del"
    android:drawabletop="@mipmap/myself"/>
</linearlayout>

还给dialog设置了一个样式

  <style name="mydialog" parent="android:style/theme.dialog">
    <!--背景颜色及和透明程度-->
    <item name="android:windowbackground">@android:color/transparent</item>
    <!--是否去除标题 -->
    <item name="android:windownotitle">true</item>
    <!--是否去除边框-->
    <item name="android:windowframe">@null</item>
    <!--是否浮现在activity之上-->
    <item name="android:windowisfloating">true</item>
    <!--是否模糊-->
    <item name="android:backgrounddimenabled">false</item>
  </style>

然后看主代码

public class menutestactivity extends activity {
  private listview listview;
  private selfdialog selfdialog;

  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_menu_test);
    listview = (listview) findviewbyid(r.id.list);
    final arrayadapter<string> adapter = new arrayadapter<string>(menutestactivity.this, android.r.layout.simple_list_item_1);
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");

    listview.setadapter(adapter);
    listview.setonitemlongclicklistener(new adapterview.onitemlongclicklistener() {
      @override
      public boolean onitemlongclick(final adapterview<?> parent, final view view, final int position, long id) {
        int[] location = new int[2];
        // parent.getitematposition(position).getlocationonscreen(location);
        view.getlocationonscreen(location);//当前item的坐标

        int x = location[0];
        int y = location[1];
        system.out.println("x:"+x+"y:"+y);//获取控件位置坐标可采用以上方法

        selfdialog = new selfdialog(menutestactivity.this);
       // window window = selfdialog.getwindow();
        // window.setcontentview(view);
        window dialogwindow = selfdialog.getwindow();
        windowmanager.layoutparams lp = dialogwindow.getattributes();
        dialogwindow.setgravity(gravity.left | gravity.top);
        lp.x = location[0]+80; // 新位置x坐标
        lp.y = location[1]-30; // 新位置y坐标


        // 当window的attributes改变时系统会调用此函数,可以直接调用以应用上面对窗口参数的更改,也可以用setattributes
        // dialog.onwindowattributeschanged(lp);
        dialogwindow.setattributes(lp);

        selfdialog.setcanceledontouchoutside(true);// 设置点击屏幕dialog不消失

        selfdialog.setyesonclicklistener("确定", new selfdialog.onyesonclicklistener() {
          @override
          public void onyesclick() {
            toast.maketext(menutestactivity.this, adapter.getitem(position), toast.length_long).show();
            selfdialog.dismiss();
          }
        });
        selfdialog.setnoonclicklistener("取消", new selfdialog.onnoonclicklistener() {
          @override
          public void onnoclick() {
            toast.maketext(menutestactivity.this, adapter.getitem(position), toast.length_long).show();
            selfdialog.dismiss();
          }
        });
        selfdialog.show();

        return true;
      }
    });


  }
}

主程序的布局

<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"
  tools:context="io.dcloud.h5b79c397.testactivity.menutestactivity">

  <listview
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/list"></listview>

</linearlayout>

效果图：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。