Android使用scrollview截取整个的屏幕并分享微信

先看看截图效果图

截取scrollview的屏幕

     /**
      * 截取scrollview的屏幕
      **/
     public static Bitmap getScrollViewBitmap(ScrollView scrollView) {
         int h = 0;
         Bitmap bitmap;
         for (int i = 0; i < scrollView.getChildCount(); i++) {
             h += scrollView.getChildAt(i).getHeight();
         }
         // 创建对应大小的bitmap
         bitmap = Bitmap.createBitmap(scrollView.getWidth(), h,
                 Bitmap.Config.RGB_565);
         final Canvas canvas = new Canvas(bitmap);
         scrollView.draw(canvas);
         return bitmap;
     }

压缩图片

     /**
      * 压缩图片
      * @param image
      * @return
      */
     public static Bitmap compressImage(Bitmap image, int quality) {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         // 质量压缩方法，这里100表示不压缩，把压缩后的数据存放到baos中
         image.compress(Bitmap.CompressFormat.JPEG, quality, baos);
         int options = 100;
         // 循环判断如果压缩后图片是否大于100kb,大于继续压缩
 //        while (baos.toByteArray().length / 1024 > 30) {
             // 重置baos
             baos.reset();
             // 这里压缩options%，把压缩后的数据存放到baos中
            image.compress(Bitmap.CompressFormat.JPEG, quality, baos);
             // 每次都减少10
 //            options -= 10;
 //        }
         // 把压缩后的数据baos存放到ByteArrayInputStream中
         ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
         // 把ByteArrayInputStream数据生成图片
         return BitmapFactory.decodeStream(isBm, null, null);
     }

点击按钮弹窗分享dialog提示窗

     //----点分享朋友弹出PopupWindow
     private void showPopupWindow() {
         View contentView = LayoutInflater.from(GroupBulkActivity.this).inflate(R.layout.popupdow_share, null, false);
         window = new PopupWindow(contentView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);
         window.setOutsideTouchable(true);
         window.setOnDismissListener(new PopupWindow.OnDismissListener() {
             @Override
             public void onDismiss() {
                 backgroundAlpha(GroupBulkActivity.this, 1.0f);
             }
         });
         backgroundAlpha(GroupBulkActivity.this, 0.5f);//0.0-1.0
         iv_wx = contentView.findViewById(R.id.iv_image1);
         iv_fiend = contentView.findViewById(R.id.iv_image2);
         im_delt = contentView.findViewById(R.id.im_delt);
         rl_delt = contentView.findViewById(R.id.rl_delt);

         window.showAtLocation(LayoutInflater.from(GroupBulkActivity.this).inflate(R.layout.activity_group_bulk, null), Gravity.BOTTOM, 0, 0);

         iv_wx.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                wechatShare(0);
                 window.dismiss();
                 backgroundAlpha(GroupBulkActivity.this, 1f);
             }
         });
         iv_fiend.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 wechatShare(1);
                 window.dismiss();
                 backgroundAlpha(GroupBulkActivity.this, 1f);
             }
         });
         rl_delt.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 window.dismiss();
                 backgroundAlpha(GroupBulkActivity.this, 1f);
             }
         });
     }

dailog布局

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

     <LinearLayout
         android:id="@+id/ll_share"
         android:layout_width="match_parent"
         android:layout_height="183dp"
         android:background="#FFFFFF"
         android:orientation="vertical">

         <TextView
             android:layout_width="match_parent"
             android:layout_height="1px"
             android:background="#e4e4e4"/>

         <RelativeLayout
             android:layout_width="match_parent"
             android:layout_height="45dp">

             <TextView
                 android:id="@+id/item_popupwindows_Photo"
                 android:layout_width="match_parent"
                 android:layout_height="55dp"
                 android:background="@drawable/bt_nobgd"
                 android:gravity="center"
                 android:text="分享给好友"
                 android:textColor="#585858"
                 android:textSize="14sp"/>

             <RelativeLayout
                 android:id="@+id/rl_delt"
                 android:layout_width="wrap_content"
               android:layout_marginLeft="320dp"
                 android:layout_height="55dp">
                 <ImageView
                     android:id="@+id/im_delt"
                     android:layout_width="14dp"
                     android:layout_height="14dp"
                     android:layout_alignParentRight="true"
                     android:layout_marginRight="21dp"
                     android:layout_marginTop="14dp"
                     android:gravity="center"
                     android:src="@drawable/down"
                     android:textColor="#585858"
                     android:textSize="12sp"/>
             </RelativeLayout>

         </RelativeLayout>

         <TextView
             android:layout_width="match_parent"
             android:layout_height="1px"
             android:background="#9e8888"/>

         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:clipChildren="false"
             >

             <LinearLayout
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="40dp"
                 android:layout_weight="1"
                 android:gravity="center"
                 android:orientation="vertical">

                 <ImageView
                     android:id="@+id/iv_image1"
                     android:layout_width="50dp"
                     android:layout_height="50dp"
                     android:src="@drawable/weixin"/>

                 <TextView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:textColor="#333333"
                     android:textSize="13sp"
                     android:layout_marginTop="5dp"
                     android:text="微信"/>

             </LinearLayout>

             <LinearLayout
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"

                 android:layout_weight="1"
                 android:gravity="center"
                 android:orientation="vertical">

                 <ImageView

                     android:id="@+id/iv_image2"
                     android:layout_width="50dp"
                     android:layout_height="50dp"
                     android:layout_marginTop="40dp"
                     android:src="@drawable/pengyou"/>

                 <TextView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:textColor="#333333"
                     android:textSize="13sp"
                     android:layout_marginTop="5dp"
                     android:text="朋友圈"/>
             </LinearLayout>
         </LinearLayout>
     </LinearLayout>
 </RelativeLayout>

分享图片到微信或盆友圈

     private void wechatShare(int flag) {
         String baseUrl = Cache.exist(CacheKey.BASE_URL) ? Cache.get(CacheKey.BASE_URL).toString() : URL.BASE_URL;
         // 分享图片
         Bitmap mBitmap = getScrollViewBitmap(scrollView);
 //        Bitmap mBitmap = CodeUtils.createImage(data.getCodeUrl(), 200, 200, BitmapFactory.decodeResource(getResources(), R.drawable.logo));
         //初始化WXImageObject和WXMediaMessage对象
         WXImageObject imageObject = new WXImageObject(compressImage(mBitmap, 80));
         WXMediaMessage msg = new WXMediaMessage();
         msg.mediaObject = imageObject;
 //        mBitmap = getScrollViewBitmap(scrollView);
         msg.setThumbImage(Bitmap.createScaledBitmap(mBitmap, 200, 200, true));

         mBitmap.recycle();
         //构造一个Req
         SendMessageToWX.Req req = new SendMessageToWX.Req();
         req.transaction = String.valueOf(System.currentTimeMillis());
         req.message = msg;
         req.scene = flag == 0 ? SendMessageToWX.Req.WXSceneSession : SendMessageToWX.Req.WXSceneTimeline;
         MyApp.api.sendReq(req);

     }

最终实现效果如图所示........