安卓右上角的弹框 自定义PopWindow实现

import android.app.Activity; import android.content.Context; import android.graphics.drawable.ColorDrawable; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.PopupWindow; import android.widget.TextView; import com.ylt.gxjkz.youliantong.R; import java.util.ArrayList; import java.util.List; /** * Created by hutao on 2018/3/27. * 右上角的弹框 如：扫一扫等 */ public class ShowPopRightTop extends PopupWindow { private final View contentView; public interface OnItemClick { void OnClick( int position); } public ShowPopRightTop( final Activity context, List<String> mData, final OnItemClick click) { LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context. LAYOUT_INFLATER_SERVICE); contentView = inflater.inflate(R.layout. pop_window_right_top, null); int height = context.getWindowManager().getDefaultDisplay().getHeight(); int width = context.getWindowManager().getDefaultDisplay().getWidth(); // 设置 SelectPicPopupWindow 的 view this.setContentView( contentView); // 设置 SelectPicPopupWindow 弹出窗体的宽 this.setWidth(width / 3); // 设置 SelectPicPopupWindow 弹出窗体的高 this.setHeight(ViewGroup.LayoutParams. WRAP_CONTENT); // 设置 SelectPicPopupWindow 弹出窗体可点击 this.setFocusable( true); this.setOutsideTouchable( true); // 刷新状态 this.update(); // 实例化一个 ColorDrawable 颜色为半透明 0000000000 // ColorDrawable dw = new ColorDrawable(context.getResources().getColor(R.color.color_ff8300)); // 点 back 键和其他地方使其消失 , 设置了这个才能触发 OnDismisslistener ，设置其他控件变化等操作 this.setBackgroundDrawable( new ColorDrawable()); // this.setAnimationStyle(android.R.style.Animation_Dialog); // 设置 SelectPicPopupWindow 弹出窗体动画效果 this.setAnimationStyle(R.style. AnimationPreview); RecyclerView recyclerView = (RecyclerView) contentView.findViewById(R.id. recyclerView); recyclerView.setLayoutManager( new LinearLayoutManager(context)); ShowPopRightTopAdapter myAdapter = new ShowPopRightTopAdapter(context, mData); recyclerView.setAdapter(myAdapter); myAdapter.setOnItemClickListener( new ShowPopRightTopAdapter.OnItemClickListener() { @Override public void OnItemClick( int position) { click.OnClick(position); ShowPopRightTop. this.dismiss(); } }); } public static class ShowPopRightTopAdapter extends RecyclerView.Adapter<ShowPopRightTopAdapter.ViewHolder> { private Context context; private List<String> mData = new ArrayList<>(); public ShowPopRightTopAdapter(Context context, List<String> mData) { this. context = context; this. mData = mData; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { return new ViewHolder(LayoutInflater. from( context).inflate(R.layout. item_show_pop_right_top, parent, false)); } @Override public void onBindViewHolder(ViewHolder holder, final int position) { holder. desc.setText( mData.get(position)); holder. item.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) { listener.OnItemClick( position); } }); } @Override public int getItemCount() { return mData.size(); } public class ViewHolder extends RecyclerView.ViewHolder { LinearLayout item; TextView desc; public ViewHolder(View itemView) { super(itemView); item = (LinearLayout) itemView.findViewById(R.id. item_layout); desc = (TextView) itemView.findViewById(R.id. desc); } } private ShowPopRightTopAdapter.OnItemClickListener listener; public void setOnItemClickListener(OnItemClickListener listener) { this. listener = listener; } public interface OnItemClickListener { void OnItemClick( int position); } } /** * 显示 popupWindow * * @param parent */ public void showPopupWindow(View parent) { if (! this.isShowing()) { // 以下拉方式显示 popupwindow this.showAsDropDown(parent, parent.getLayoutParams(). width / 2 - 10, 0); } else { this.dismiss(); } }}

pop_window_right_top 布局文件：

<? 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= "wrap_content" android :background= "@color/color_7F7F7F" android :gravity= "center_horizontal" android :orientation= "vertical"> < android.support.v7.widget.RecyclerView android :id= "@+id/recyclerView" android :layout_width= "match_parent" android :layout_height= "wrap_content" /></ LinearLayout>

R.style.AnimationPreview     动画

<!-- 右上角弹框的动画 扫一扫的那个弹框 -->< style name= "AnimationPreview"> < item name= "android:windowEnterAnimation">@anim/pop_right_top_fade_in</ item> < item name= "android:windowExitAnimation">@anim/pop_right_top_fade_out</ item></ style>

pop_right_top_fade_in代码如下：

<? xml version= "1.0" encoding= "utf-8" ?> <!-- 左上角扩大 -->< scale xmlns: android = "http://schemas.android.com/apk/res/android" android :duration= "100" android :fromXScale= "0.001" android :fromYScale= "0.001" android :interpolator= "@android:anim/accelerate_decelerate_interpolator" android :pivotX= "100%" android :pivotY= "10%" android :toXScale= "1.0" android :toYScale= "1.0" />

pop_right_top_fade_out代码如下：

<?xml version="1.0" encoding="utf-8"?><!-- 左上角缩小 --><scale xmlns:android="http://schemas.android.com/apk/res/android"    android:duration="100"    android:fromXScale="1.0"    android:fromYScale="1.0"    android:interpolator="@android:anim/accelerate_decelerate_interpolator"    android:pivotX="100%"    android:pivotY="10%"    android:toXScale="0.001"    android:toYScale="0.001" />

R.layout.item_show_pop_right_top 布局文件：

<? 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= "wrap_content"     android :orientation= "vertical">    < LinearLayout         android :id= "@+id/item_layout"         android :layout_width= "match_parent"         android :layout_height= "wrap_content"         android :orientation= "horizontal">        < ImageView             android :layout_width= "wrap_content"             android :layout_height= "match_parent"             android :layout_margin= "10dp"             android :gravity= "center"             android :src= "@mipmap/icon_delete"             android :visibility= "gone" />        < TextView             android :id= "@+id/desc"             android :layout_width= "match_parent"             android :layout_height= "45dp"             android :layout_marginLeft= "5dp"             android :gravity= "center"             android :text= " 扫一扫 "             android :textColor= "@color/color_ffffff"             android :textSize= "16sp" />    </ LinearLayout></ LinearLayout>