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>