Android截屏分享功能
最近项目需要实现Android截屏分享功能,包括Android截屏获取图片、将图片保存到本地、通知系统相册更新、通过微信、QQ、微博分享截屏图片,本篇文章作为总结回顾。
一、Android截屏获取图片
通过对view进行绘制,得到bitmap,可以对Activity、Fragment进行绘制,也可以对其他的View进行绘制。
1Activity截图(带空白的状态栏)
publicBitmapshotScreen(Activityactivity){ Viewview=activity.getWindow().getDecorView(); view.setDrawingCacheEnabled(true); view.buildDrawingCache(); Bitmapbitmap=Bitmap.createBitmap(view.getDrawingCache(),0,0,view.getMeasuredWidth(),view.getMeasuredHeight()); view.setDrawingCacheEnabled(false); view.destroyDrawingCache(); returnbitmap; }
2Activity截图(去掉状态栏)
publicBitmapshotActivityNoBar(Activityactivity){ //获取windows中最顶层的view Viewview=activity.getWindow().getDecorView(); view.buildDrawingCache(); //获取状态栏高度 Rectrect=newRect(); view.getWindowVisibleDisplayFrame(rect); intstatusBarHeights=rect.top; Displaydisplay=activity.getWindowManager().getDefaultDisplay(); //获取屏幕宽和高 intwidths=display.getWidth(); intheights=display.getHeight(); //允许当前窗口保存缓存信息 view.setDrawingCacheEnabled(true); //去掉状态栏 Bitmapbmp=Bitmap.createBitmap(view.getDrawingCache(),0, statusBarHeights,widths,heights-statusBarHeights); //销毁缓存信息 view.destroyDrawingCache(); returnbmp; }
3Fragment截图
publicBitmapgetFragmentBitmap(Fragmentfragment){ Viewv=fragment.getView(); v.buildDrawingCache(false); returnv.getDrawingCache(); }
绘制View的方式只适用于静态View,SurfaceView、IjkVideoView等播放视频的View,不能截取到;此外,某些动画类View也不能截取到。针对上述情况,可获取SurfaceView的一帧生成bitmap,将bitmap进行合并,同理动画类View也可以合并。例如,最底层播放视频、中间层播放动画、最上层是普通的view,可将bitmap合并,如下:
publicBitmapcombineBitmapInCenter(Bitmapbackground,BitmapmidBitmap,Bitmapforeground){ if(!background.isMutable()){ background=background.copy(Bitmap.Config.ARGB_8888,true); } Paintpaint=newPaint(); Canvascanvas=newCanvas(background); intbw=background.getWidth(); intbh=background.getHeight(); intmw=midBitmap.getWidth(); intmh=midBitmap.getHeight(); intmx=(mw-bw)/2; intmy=(mh-bh)/2; canvas.drawBitmap(midBitmap,mx,my,paint); intfw=foreground.getWidth(); intfh=foreground.getHeight(); intfx=(fw-bw)/2; intfy=(fh-bh)/2; canvas.drawBitmap(foreground,fx,fy,paint); canvas.save(Canvas.ALL_SAVE_FLAG); canvas.restore(); returnbackground; }
需要注意:view的绘制必须在UI线程完成,否则会crash;bitmap的合并会较耗时,需在子线程完成。
二、将bitmap保存在本地
publicvoidsaveBitmapToFile(StringfileName,Bitmapbitmap){ if(TextUtils.isEmpty(fileName)||bitmap==null)return; try{ Filef=newFile(fileName); f.createNewFile(); FileOutputStreamfOut=newFileOutputStream(f); bitmap.compress(Bitmap.CompressFormat.JPEG,80,fOut); fOut.flush(); fOut.close(); }catch(FileNotFoundExceptione){ Log.i("ScreenShotUtil","保存失败"); e.printStackTrace(); }catch(IOExceptione){ e.printStackTrace(); } }
三、通知系统相册更新
publicvoidAlbumScan(StringfileName){ MediaScannerConnection.scanFile(mActivity.getApplicationContext(),newString[]{fileName},newString[]{"image/jpeg"},null); }
四、通过微信、QQ、微博分享
通过微信、QQ、微博分享的sdk实现,如下:
1分享到微信朋友圈
publicvoidshareToWexinCircle(){ if(iShareService.isWeixinInstalled()){//判断微信是否安装 BitmapmWXShareBitmap=mLatesBitmap;//将截屏得到的bitmap赋值 WXImageObjectimgObject=newWXImageObject(mWXShareBitmap); WXMediaMessagemediaMessage=newWXMediaMessage(); mediaMessage.mediaObject=imgObject; Log.i(TAG,"mediaMessage.mediaObject=imgObject"); //设置缩略图 BitmapthumbBmp=Bitmap.createScaledBitmap(mWXShareBitmap,50,80,true); mediaMessage.thumbData=bmpToByteArray(thumbBmp,true); Log.i(TAG,"设置缩略图"); //requesttowx SendMessageToWX.Reqreq=newSendMessageToWX.Req(); req.transaction=buildTransaction("img");//分享类型是图片 req.message=mediaMessage; req.scene=SendMessageToWX.Req.WXSceneTimeline;//分享到朋友圈 Log.i(TAG,"requesttowx"); IWXAPIapi=WXAPIFactory.createWXAPI(mActivity,"微信分享id",true); api.registerApp("微信分享id"); booleanresult=api.sendReq(req); Log.i(TAG,"sharetocircle:"+result); }else{ ToastUtils.show(mActivity,"您没有安装微信客户端"); } } publicbyte[]bmpToByteArray(finalBitmapbmp,finalbooleanneedRecycle){ ByteArrayOutputStreamoutput=newByteArrayOutputStream(); bmp.compress(Bitmap.CompressFormat.PNG,100,output); if(needRecycle){ bmp.recycle(); } byte[]result=output.toByteArray(); try{ output.close(); }catch(Exceptione){ e.printStackTrace(); } returnresult; }privateStringbuildTransaction(finalStringtype){ return(type==null)?String.valueOf(System.currentTimeMillis()):type+System.currentTimeMillis(); }
2、分享到微信好友
2、分享到微信好友
publicvoidshareWexinFriend(){ if(iShareService.isWeixinInstalled()){ mWXShareBitmap=mLatesBitmap; WXImageObjectimgObject=newWXImageObject(mWXShareBitmap); WXMediaMessagemediaMessage=newWXMediaMessage(); mediaMessage.mediaObject=imgObject; //设置缩略图 BitmapthumbBmp=Bitmap.createScaledBitmap(mWXShareBitmap,50,80,true); mediaMessage.thumbData=bmpToByteArray(thumbBmp,true); //requesttowx SendMessageToWX.Reqreq=newSendMessageToWX.Req(); req.transaction=buildTransaction("img"); req.message=mediaMessage; req.scene=SendMessageToWX.Req.WXSceneSession; IWXAPIapi=WXAPIFactory.createWXAPI(mActivity,"微信分享id",true); api.registerApp("微信分享id"); booleanresult=api.sendReq(req); Log.i(TAG,"sharetoweixin:"+result); }else{ ToastUtils.show(mActivity,"您没有安装微信客户端"); } }
3、分享到QQ好友
4QQ空间分享
publicvoidshareToQQZone(){ if(iShareService.isQQInstalled()){ Tencenttencent=Tencent.createInstance("QQid",mActivity); Bundleparams=newBundle(); params.putString(QQShare.SHARE_TO_QQ_IMAGE_LOCAL_URL,mLatestImagePath); params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE,QQShare.SHARE_TO_QQ_TYPE_IMAGE); params.putInt(QQShare.SHARE_TO_QQ_EXT_INT,QQShare.SHARE_TO_QQ_FLAG_QZONE_AUTO_OPEN); tencent.shareToQQ(mActivity,params,newIUiListener(){ @Override publicvoidonComplete(Objecto){ ToastUtils.show(mActivity,"分享成功!"); } @Override publicvoidonError(UiErroruiError){ ToastUtils.show(mActivity,"分享失败,请稍后重试!"); Log.i(TAG,"shareToQQonError,errorcode:"+uiError.errorCode); } @Override publicvoidonCancel(){ Log.i(TAG,"shareToQQonCancel"); } }); }else{ ToastUtils.show(mActivity,"您没有安装QQ客户端"); }
5微博分享
publicvoidshareToWeibo(){ if(iShareService.isWeiboInstalled()){ Log.i(TAG,"iShareService.isWeiboInstalled()"); IWeiboShareAPIapi=WeiboShareSDK.createWeiboAPI(mActivity,"微博id"); if(api.isWeiboAppInstalled()){ api.registerApp(); } WeiboMultiMessageweiboMultiMessage=newWeiboMultiMessage(); Bitmapbitmap=mLatesBitmap;//截图bitmap ImageObjectimageObject=newImageObject(); imageObject.setImageObject(bitmap); weiboMultiMessage.imageObject=imageObject; SendMultiMessageToWeiboRequestrequest=newSendMultiMessageToWeiboRequest(); request.transaction=String.valueOf(System.currentTimeMillis()); request.multiMessage=weiboMultiMessage; booleanrequestWeibo=api.sendRequest(request); Log.i(TAG,"sharetoweibo:"+requestWeibo); }else{ ToastUtils.show(mActivity,"您没有安装微博客户端"); } }
总结
以上所述是小编给大家介绍的Android截屏分享功能,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对毛票票网站的支持!