Android 自定义弹出菜单和对话框

Android 开发当中，可能会存在许多自定义布局的需求，比如自定义弹出菜单（popupWindow），以及自定义对话框（Dialog）。

先讲第一种，自定义PopUpWindow
1.popupWindow

protected void showPopWindow(View view, final int pos){
        WindowManager wm= (WindowManager) myContext.getSystemService(Context.WINDOW_SERVICE);
        int width=wm.getDefaultDisplay().getWidth();
        LayoutInflater layoutInflater=(LayoutInflater)myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View popView=layoutInflater.inflate(R.layout.layout_shoucang_popupwindow,null);
        //加载弹出菜单的布局文件
        final ListView lvpop= (ListView) popView.findViewById(R.id.lvShouCangPop);
        List<String> strData=new ArrayList<>();
        strData.add("删除");
        strData.add("分享");
        popView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
        popupWindow=new PopupWindow(popView,3*width/10, ViewGroup.LayoutParams.WRAP_CONTENT); //设置popupWindow 的大小
        lvpop.setAdapter(new AdapterShouCangDeletePop(myContext,strData));
        lvpop.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if(position==0){
                    //点击删除按钮的逻辑
//                  ToastUtil.toastButtom(myContext,"点击删除按钮");
//                  datas.remove(pos);  //remove掉这行数据
                    toActivityPos=pos;
//                  notifyDataSetChanged();
                    sendDeleteBoardCast();  //发送一条广播
                    popupWindow.dismiss();
                }else if(position ==1){
                    //点击分享的逻辑
                    String title=datas.get(position).ucDesc;
                    String photoUrl=datas.get(position).ucIcon;
                    String contentUrl=datas.get(position).ucUrl;
                    DialogShouCangShare dialogShouCangShare=new DialogShouCangShare(myContext,title,photoUrl,contentUrl);  //弹出分享对话框
                    dialogShouCangShare.show();
                    popupWindow.dismiss();
                }
            }
        });
        int[] location=new int[2];
        view.getLocationOnScreen(location);

        popupWindow.setFocusable(true);
        popupWindow.setBackgroundDrawable(new BitmapDrawable());//最好加上这一句，因为他可以取消显示这个弹出菜单，不加的话，弹出菜单很难消失

        //下方：popupWindow.showAsDropDown(v);
        //popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0]+v.getWidth(), location[1]);  显示在右边
        //popupWindow显示在左边
        popupWindow.showAtLocation(view, Gravity.NO_GRAVITY
                , location[0]-popupWindow.getWidth(),location[1]);  //这里的view是传进来的view，比如点击事件中的view，就把它传进来，popupwindow的位置可以自行调整

    }

填充popupWindow中listView的adapter代码

/**
 * Created by cx on 2017/8/8.
 */

public class AdapterShouCangDeletePop extends BaseAdapter{

    public Context mContext;
    private List<String> data;

    public AdapterShouCangDeletePop(Context context,List<String> data){
        this.mContext=context;
        this.data=data;
    }

    @Override
    public int getCount() {
        return data.size();
    }

    @Override
    public Object getItem(int position) {
        return data.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder=null;
        if(convertView==null){
            holder=new ViewHolder();
            convertView= LayoutInflater.from(mContext).inflate(R.layout.lv_shoucang_pop_item,null);
            holder.tv= (TextView) convertView.findViewById(R.id.tvShouCangPop);
            convertView.setTag(holder);
        }else{
            holder= (ViewHolder) convertView.getTag();
        }
        holder.tv.setText(data.get(position).toString());
        return convertView;
    }

    class ViewHolder{
        TextView tv;
    }
}

弹出菜单的布局，用listView 填充，然后由于要加圆角的背景，所以更改background

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ListView
        android:id="@+id/lvShouCangPop"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="2dp"
        android:background="@drawable/bg_shoucang_popup_bg"
        android:listSelector="@drawable/izd_shoucang_delete_selector_pop"
        />
</LinearLayout>

listView的圆角背景图片

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:shape="rectangle"  >
            <solid android:color="#eeeeee"/>
            <corners android:radius="8.0dip"/>
        </shape>

    </item>
</selector>

然后你只要在你的逻辑代码中调用showPopWindow（）这个方法就行了，是不是很简单！

---

紧接着开始讲自定义对话框了，因为很多app中都有这个功能，而且效果还不错！

public class DialogShouCangShare extends Dialog{

    private Context myContext;
    private RelativeLayout rlCancle;

    private GridView gridView;
    //那些图片
    private int[] data=new int[]{R.drawable.izd_shoucang_wechat,R.drawable.izd_shoucang_friend,R.drawable.izd_shoucang_qq,
            R.drawable.izd_shoucang_weibo,R.drawable.izd_shoucang_qzone,R.drawable.izd_shoucang_email};

    public DialogShouCangShare(Context context,String title,String photoUrl,String contentUrl) {
        super(context);
    }


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        super.setContentView(R.layout.izd_shoucang_dialog_share);
        ShareSDK.initSDK(myContext);
        gridView = (GridView) super.findViewById(R.id.gv_share);
        gridView.setSelector(new ColorDrawable(Color.TRANSPARENT));
        AdapterSCShareGridView adapter=new AdapterSCShareGridView(myContext,data);
        gridView.setAdapter(adapter);


        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {

                switch (position) {
                    //对于GridView中的item的点击事件
                }
                DialogShouCangShare.this.dismiss();
            }
        });

        rlCancle = (RelativeLayout) findViewById(R.id.shoucang_rlCancle);
        rlCancle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                DialogShouCangShare.this.dismiss();
            }
        });

    @Override
    public void show()
    {
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        this.requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
        this.setCanceledOnTouchOutside(true);
        Window  dialogWindow = this.getWindow(); //得到对话框

        dialogWindow.setGravity(Gravity.LEFT | Gravity.BOTTOM);
        dialogWindow.getDecorView().setPadding(0, 0, 0, 0);

        WindowManager.LayoutParams lp = dialogWindow.getAttributes();
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
        dialogWindow.setAttributes(lp);

        dialogWindow.setWindowAnimations(R.style.izd_dialogWindowAnim); //设置窗口弹出动画 ,由styles配置，有进入和退出动画

        //dialogWindow.setWindowAnimations(R.anim.dialog_enter_anim);
        //
        //        WindowManager.LayoutParams lp = dialogWindow.getAttributes();
        //        lp.width = 100; // 宽度
        //        lp.height = 300; // 高度
        //        //lp.alpha = 0.7f; // 透明度
        //        //dialogWindow.setAttributes(lp);

        dialogWindow.setBackgroundDrawableResource(R.drawable.radius_shoucang_share_nopadding); //设置对话框背景
//        dialogWindow.setBackgroundDrawableResource(R.color.izd_white); //设置对话框背景

        super.show();
    }
}

填充对话框中GridView的adapter

public class AdapterSCShareGridView extends BaseAdapter{
    private Context mContext;
    private int[] data;

    public AdapterSCShareGridView(Context mContext, int[] data) {
        super();
        this.mContext = mContext;
        this.data = data;
    }

    @Override
    public int getCount() {
        return data.length;
    }

    @Override
    public Object getItem(int position) {
        return data[position];
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder=null;
        if(convertView==null){
            holder=new ViewHolder();
            convertView=View.inflate(mContext, R.layout.adapter_shoucang_share_gridview, null);
            holder.ivLogo=(ImageView) convertView.findViewById(R.id.ivLogo);
            holder.tvName=(TextView)convertView.findViewById(R.id.tvName);
            convertView.setTag(holder);
        }else{
            holder=(ViewHolder) convertView.getTag();
        }

        holder.ivLogo.setImageResource(data[position]);

        if(position==0){
            holder.tvName.setText("微信");
        }else if(position==1){
            holder.tvName.setText("朋友圈");
        }else if(position==2){
            holder.tvName.setText("QQ好友");
        }else if(position==3){
            holder.tvName.setText("新浪微博");
        }else if(position==4){
            holder.tvName.setText("QQ空间");
        }else if(position==5){
            holder.tvName.setText("邮箱");
        }
        return convertView;
    }

    class ViewHolder{
        ImageView ivLogo;
        TextView tvName;
    }
}

再看下该对话框的布局文件：只有一个gridView 和relativeLayout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_marginTop="10dp"
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp"
    android:layout_marginBottom="8dp"
    android:background="@color/transparent"
    >

    <LinearLayout
        android:layout_width="match_parent"
        android:orientation="vertical"
        android:layout_height="match_parent">

        <GridView
            android:id="@+id/gv_share"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:numColumns="3"
            android:verticalSpacing="-36dp"
            android:background="@drawable/bg_share_shoucang">
        </GridView>

        <RelativeLayout
            android:id="@+id/shoucang_rlCancle"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:layout_marginTop="8dp"
            android:background="@drawable/bg_share_shoucang"
            >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="取消"
                android:textColor="#009688"
                android:textSize="16sp"
                android:layout_centerInParent="true"/>
        </RelativeLayout>
    </LinearLayout>


</LinearLayout>

这是设置对话框的背景的布局文件，其实主要设置对话框的圆角，以及对话框颜色为透明就行了！

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#ffffff"/>
    <corners android:radius="4dp" />
    <gradient android:startColor="#00000000" android:endColor="#00000000"/>
</shape>

再次声明，这里使用GridView是为了，方便以后填充更多的数据，如果用相对布局加线性布局，写死的话，以后若要再次添加数据的话，就要再去修改布局，比较麻烦！因为有前车之鉴的我，下面就是我之前不用GridView去写的布局文件！新手如果想练手的话，可以尝试！

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_centerInParent="true">

                <ImageView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="32dp"
                    android:src="@drawable/izd_shoucang_wechat"
                    android:layout_centerHorizontal="true"/>

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="微信"
                    android:layout_gravity="center"
                    android:layout_marginTop="9dp"
                    android:layout_centerHorizontal="true"/>
                </LinearLayout>
            </RelativeLayout>

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_centerInParent="true">

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="32dp"
                        android:src="@drawable/izd_shoucang_friend"
                        android:layout_centerHorizontal="true"/>

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="朋友圈"
                        android:layout_gravity="center"
                        android:layout_marginTop="9dp"
                        android:layout_centerHorizontal="true"/>
                </LinearLayout>
            </RelativeLayout>

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_centerInParent="true">

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="32dp"
                        android:src="@drawable/izd_shoucang_qq"
                        android:layout_centerHorizontal="true"/>

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="QQ好友"
                        android:layout_gravity="center"
                        android:layout_marginTop="9dp"
                        android:layout_centerHorizontal="true"/>
                </LinearLayout>
            </RelativeLayout>
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_centerInParent="true">

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="24dp"
                        android:src="@drawable/izd_shoucang_weibo"
                        android:layout_centerHorizontal="true"/>

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="微博"
                        android:layout_gravity="center"
                        android:layout_marginTop="9dp"
                        android:layout_centerHorizontal="true"/>
                </LinearLayout>
            </RelativeLayout>

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_centerInParent="true">

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="24dp"
                        android:src="@drawable/izd_shoucang_qzone"
                        android:layout_centerHorizontal="true"/>

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="QQ空间"
                        android:layout_gravity="center"
                        android:layout_marginTop="9dp"
                        android:layout_centerHorizontal="true"/>
                </LinearLayout>
            </RelativeLayout>

            <RelativeLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    android:layout_centerInParent="true">

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginTop="24dp"
                        android:src="@drawable/izd_shoucang_email"
                        android:layout_centerHorizontal="true"/>

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="邮箱"
                        android:layout_gravity="center"
                        android:layout_marginTop="9dp"
                        android:layout_centerHorizontal="true"/>
                </LinearLayout>
            </RelativeLayout>
        </LinearLayout>
    </LinearLayout>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:layout_marginTop="8dp"
        >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="取消"
            android:textColor="#009688"
            android:textSize="16sp"
            android:layout_centerInParent="true"/>
    </RelativeLayout>

</LinearLayout>

效果也是一样的！

然后你要使用该对话框的话，只要新建对话框就可以了！
DialogShouCangShare dialogShouCangShare=new DialogShouCangShare(myContext); //弹出分享对话框
dialogShouCangShare.show();
到此，总算写完了，各位Android童鞋们，可以回去练下手吧！