Android仿硬币转动微信红包动画效果

2019-10-22 18:20:44

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项目需要研究了一下微信红包动画，即硬币转动的效果，原理其实就是三张不同角度的图片利用AnimationDrawable帧动画进行播放，在参考了案例之后，给自己记录一下完成的过程。

1，在XML文件中定义动画：

步骤如下：

①新建 Android 项目

②在drawable目录中新建一个anim.xml(注意文件名小写)

<?xml version="1.0" encoding="utf-8"?> <animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false">  <item android:drawable="@drawable/bag" android:duration="400"></item>  <item android:drawable="@drawable/bag1" android:duration="400"></item>  <item android:drawable="@drawable/bag2" android:duration="400"></item> </animation-list>

根标签为animation-list，其中oneshot代表着是否只展示一遍，设置为false会不停的循环播放动画根标签下，通过item标签对动画中的每一个图片进行声明，android:duration 表示展示所用的该图片的时间长度 ,可通过该参数来设置图片旋转的速度，其他属性可以自行查找资料~

2，设置布局文件，效果以及代码如下

android,微信红包,动画

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:orientation="vertical"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:gravity="center_vertical|center_horizontal"  android:background="@drawable/background">  <!-- 关闭按钮框 -->  <LinearLayout   android:id="@+id/top"   android:layout_width="match_parent"   android:layout_height="0dp"   android:layout_weight="1">   <Button    android:id="@+id/close"    android:layout_width="32dp"    android:layout_height="32dp"    android:background="@drawable/close"    android:layout_margin="10dp"/>  </LinearLayout>  <!-- 头像以及相关文字 -->  <LinearLayout   android:layout_below="@+id/top"   android:layout_width="match_parent"   android:layout_height="0dp"   android:layout_weight="10"   android:orientation="vertical">   <RelativeLayout    android:layout_width="match_parent"    android:layout_height="0dp"    android:layout_weight="3">    <ImageButton     android:id="@+id/head_img"     android:layout_width="60dp"     android:layout_height="60dp"     android:background="@drawable/ic_launcher"     android:layout_alignParentTop="true"     android:layout_centerHorizontal="true"/>    <TextView     android:id="@+id/name"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="系统用户"     android:layout_marginTop="10dp"     android:layout_below="@+id/head_img"     android:layout_centerHorizontal="true"     android:textColor="@color/yellow"     android:textSize="18sp"/>    <TextView     android:id="@+id/textView1"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_below="@+id/name"     android:layout_centerHorizontal="true"     android:layout_marginTop="5dp"     android:textSize="15sp"     android:textColor="@color/yellow2"     android:text="给你发了一个红包"/>    <TextView     android:id="@+id/textView2"     android:layout_below="@+id/textView1"     android:layout_centerHorizontal="true"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_marginTop="20dp"     android:textColor="@color/yellow"     android:textSize="23sp"     android:text="恭喜发财，大吉大利"/>   </RelativeLayout>   <RelativeLayout    android:layout_width="match_parent"    android:layout_height="0dp"    android:layout_weight="3">    <Button     android:id="@+id/open_btn"     android:layout_width="100dp"     android:layout_height="100dp"     android:background="@drawable/anim"     android:layout_marginTop="50dp"     android:layout_centerHorizontal="true" />   </RelativeLayout>   <RelativeLayout    android:layout_width="match_parent"    android:layout_height="0dp"    android:layout_weight="1">    <ImageView     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:background="@drawable/blow"     android:layout_alignParentBottom="true"     android:layout_centerHorizontal="true"     android:layout_marginBottom="14dp"     android:id="@+id/imageView" />   </RelativeLayout>  </LinearLayout> </LinearLayout>

3，实现红包弹窗的效果，效果及代码如下：

步骤如下：

①自定义红包弹窗Diaog类：红色代码部分为启动动画部分

android,微信红包,动画

package com.example.xuboyu.luckeymoney; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.graphics.drawable.AnimationDrawable; import android.view.Display; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.widget.Button; import android.widget.TextView; /**  * 自定义红包弹窗  * Created by xuboyu on 2017/2/20.  */ public class LuckeyDialog extends Dialog {  public LuckeyDialog(Context context) {   super(context);  }  public LuckeyDialog(Context context, int theme) {   super(context, theme);  }  public static class Builder {   private Context context;   private String name;//发红包者的名称   private Button red_page;   //拆红包按钮   private String openButtonText;   private OnClickListener openButtonClickListener;   //关闭按钮   private String closeButtonText;   private OnClickListener closeButtonClickListener;   public Builder(Context context, int dialog) {    this.context = context;   }   /**    * Set the Dialog title from resource    *    * @param name    * @return    */   public Builder setName(int name) {    this.name = (String) context.getText(name);    return this;   }   /**    * Set the Dialog title from String    *    * @param name    * @return    */   public Builder setName(String name) {    this.name = name;    return this;   }   /**    * Set the positive button resource and it's listener    *    * @param closeButtonText    * @return    */   public Builder setCloseButton(int closeButtonText,            OnClickListener listener) {    this.closeButtonText = (String) context      .getText(closeButtonText);    this.closeButtonClickListener = listener;    return this;   }   public Builder setCloseButton(String closeButtonText,           OnClickListener listener) {    this.closeButtonText = closeButtonText;    this.closeButtonClickListener = listener;    return this;   }   /**    * Set the positive button resource and it's listener    *    * @param openButtonText    * @return    */   public Builder setOpenButton(int openButtonText,            OnClickListener listener) {    this.openButtonText = (String) context      .getText(openButtonText);    this.openButtonClickListener = listener;    return this;   }   public Builder setOpenButton(String openButtonText,            OnClickListener listener) {    this.openButtonText = openButtonText;    this.openButtonClickListener = listener;    return this;   }   public LuckeyDialog create() {    LayoutInflater inflater = (LayoutInflater) context      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);    //加载布局    final LuckeyDialog dialog = new LuckeyDialog(context,R.style.Dialog);    View layout = inflater.inflate(R.layout.open, null);    red_page = (Button) layout.findViewById(R.id.open_btn);    <span style="color:#ff0000;">//red指的是需要播放动画的ImageView控件    AnimationDrawable animationDrawable = (AnimationDrawable)red_page.getBackground();    animationDrawable.start();//启动动画</span>    dialog.addContentView(layout, new ViewGroup.LayoutParams(      ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));    //设置发红包者姓名    ((TextView) layout.findViewById(R.id.name)).setText(name);    //设置拆红包的按钮    if (openButtonText != null) {     ((Button) layout.findViewById(R.id.open_btn))       .setText(openButtonText);     if (openButtonClickListener != null) {      ((Button) layout.findViewById(R.id.open_btn))        .setOnClickListener(new View.OnClickListener() {         public void onClick(View v) {          openButtonClickListener.onClick(dialog,            DialogInterface.BUTTON_POSITIVE);         }        });     }    } else {     // if no confirm button just set the visibility to GONE     layout.findViewById(R.id.open_btn).setVisibility(       View.GONE);    }    //设置关闭按钮    if (closeButtonText != null) {     ((Button) layout.findViewById(R.id.close))       .setText(closeButtonText);     if (closeButtonClickListener != null) {      ((Button) layout.findViewById(R.id.close))        .setOnClickListener(new View.OnClickListener() {         public void onClick(View v) {          closeButtonClickListener.onClick(dialog,            DialogInterface.BUTTON_POSITIVE);         }        });     }    } else {     // if no confirm button just set the visibility to GONE     layout.findViewById(R.id.close).setVisibility(       View.GONE);    }    dialog.setContentView(layout);    return dialog;   }  } }

②在系统style文件中新增一个Diaog

<style name="Dialog" parent="android:style/Theme.Dialog">   <!-- <item name="android:background">#00000000</item> -->   <item name="android:windowBackground">@drawable/red_bg</item>   <item name="android:windowFrame">@null</item>   <item name="android:windowNoTitle">true</item>   <item name="android:windowIsFloating">true</item><!-- 是否漂现在activity上 -->   <item name="android:windowCloseOnTouchOutside">false</item </style>

③在MainActivity中调用自定义的Diaog类并实例化，并且设置弹出的红包占屏幕的比例，不然弹出的红包会占满整个屏幕，红色代码为设置大小代码。

red1.setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View view) {     LuckeyDialog.Builder builder = new LuckeyDialog.Builder(mContext,R.style.Dialog);//调用style中的Diaog     builder.setName("系统");     builder.setOpenButton("", new DialogInterface.OnClickListener() {      public void onClick(DialogInterface dialog, int which) {      Intent intent = new Intent(mContext,Open.class);      startActivity(intent);      dialog.dismiss();      }     });     builder.setCloseButton("", new DialogInterface.OnClickListener() {      @Override      public void onClick(DialogInterface dialog, int i) {       dialog.dismiss();      }     });     <span style="color:#ff0000;">Dialog dialog = builder.create();     Window dialogWindow = dialog.getWindow();     WindowManager m = getWindowManager();     Display d = m.getDefaultDisplay(); // 获取屏幕宽、高用     WindowManager.LayoutParams p = dialogWindow.getAttributes(); // 获取对话框当前的参数值     p.height = (int) (d.getHeight() * 0.7); // 高度设置为屏幕的0.6     p.width = (int) (d.getWidth() * 0.75); // 宽度设置为屏幕的0.65     dialogWindow.setAttributes(p); </span>     dialog.show();    }   });

4，完成点击后的两种结果，即抢到和未抢到的两种结果，通过Intent跳转领取成功类或者跳出失败弹窗的简单逻辑即可。

①抢到的效果图，这里界面比较简单就不贴代码了。

android,微信红包,动画