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Android截屏分享功能

2023-06-03 星期六 / 0 评论 / 0 点赞 / 44 阅读 / 10676 字

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

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。

    1 Activity截图(带空白的状态栏)

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public Bitmap shotScreen(Activity activity) {  View view = activity.getWindow().getDecorView();  view.setDrawingCacheEnabled(true);  view.buildDrawingCache();  Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache(), 0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());  view.setDrawingCacheEnabled(false);  view.destroyDrawingCache();  return bitmap; }
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    2 Activity截图(去掉状态栏)

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public Bitmap shotActivityNoBar(Activity activity) {  // 获取windows中最顶层的view  View view = activity.getWindow().getDecorView();  view.buildDrawingCache();  // 获取状态栏高度  Rect rect = new Rect();  view.getWindowVisibleDisplayFrame(rect);  int statusBarHeights = rect.top;  Display display = activity.getWindowManager().getDefaultDisplay();  // 获取屏幕宽和高  int widths = display.getWidth();  int heights = display.getHeight();  // 允许当前窗口保存缓存信息  view.setDrawingCacheEnabled(true);  // 去掉状态栏  Bitmap bmp = Bitmap.createBitmap(view.getDrawingCache(), 0,    statusBarHeights, widths, heights - statusBarHeights);  // 销毁缓存信息  view.destroyDrawingCache();  return bmp; } 
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3 Fragment截图

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public Bitmap getFragmentBitmap(Fragment fragment) {  View v = fragment.getView();  v.buildDrawingCache(false);  return v.getDrawingCache(); }
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    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:

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public Bitmap combineBitmapInCenter(Bitmap background, Bitmap midBitmap, Bitmap foreground) {   if (!background.isMutable()) {    background = background.copy(Bitmap.Config.ARGB_8888, true);   }   Paint paint = new Paint();   Canvas canvas = new Canvas(background);   int bw = background.getWidth();   int bh = background.getHeight();   int mw = midBitmap.getWidth();   int mh = midBitmap.getHeight();   int mx = (mw - bw) / 2;   int my = (mh - bh) / 2;   canvas.drawBitmap(midBitmap, mx, my, paint);   int fw = foreground.getWidth();   int fh = foreground.getHeight();   int fx = (fw - bw) / 2;   int fy = (fh - bh) / 2;   canvas.drawBitmap(foreground, fx, fy, paint);   canvas.save(Canvas.ALL_SAVE_FLAG);   canvas.restore();   return background; }
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    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

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public void saveBitmapToFile(String fileName, Bitmap bitmap) {   if (TextUtils.isEmpty(fileName) || bitmap == null) return;   try {    File f = new File(fileName);    f.createNewFile();    FileOutputStream fOut = new FileOutputStream(f);    bitmap.compress(Bitmap.CompressFormat.JPEG, 80, fOut);    fOut.flush();    fOut.close();   } catch (FileNotFoundException e) {    Log.i("ScreenShotUtil", "保存失败");    e.printStackTrace();   } catch (IOException e) {    e.printStackTrace();   } } 
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三、通知系统相册更新

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public void AlbumScan(String fileName) {   MediaScannerConnection.scanFile(mActivity.getApplicationContext(), new String[]{fileName}, new String[]{"image/jpeg"}, null); }
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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

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public void shareToWexinCircle() {   if (iShareService.isWeixinInstalled()) {//判断微信是否安装    Bitmap mWXShareBitmap = mLatesBitmap;//将截屏得到的bitmap赋值    WXImageObject imgObject = new WXImageObject(mWXShareBitmap);    WXMediaMessage mediaMessage = new WXMediaMessage();    mediaMessage.mediaObject = imgObject;    Log.i(TAG,"mediaMessage.mediaObject = imgObject");    //设置缩略图    Bitmap thumbBmp = Bitmap.createScaledBitmap(mWXShareBitmap,50,80,true);    mediaMessage.thumbData = bmpToByteArray(thumbBmp,true);    Log.i(TAG,"设置缩略图");    //request to wx    SendMessageToWX.Req req = new SendMessageToWX.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,"request to wx");    IWXAPI api = WXAPIFactory.createWXAPI(mActivity,"微信分享id",true);    api.registerApp("微信分享id");    boolean result = api.sendReq(req);    Log.i(TAG,"share to circle:"+result);   } else {    ToastUtils.show(mActivity, "您没有安装微信客户端");   } } public byte[] bmpToByteArray(final Bitmap bmp, final boolean needRecycle) {   ByteArrayOutputStream output = new ByteArrayOutputStream();   bmp.compress(Bitmap.CompressFormat.PNG, 100, output);   if (needRecycle) {    bmp.recycle();   }   byte[] result = output.toByteArray();   try {    output.close();   } catch (Exception e) {    e.printStackTrace();   }   return result; } <pre name="code" class="java">private String buildTransaction(final String type) {   return (type == null) ? String.valueOf(System.currentTimeMillis()) : type + System.currentTimeMillis(); }</pre> <h3><a name="t8"></a><br> 
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2、分享到微信好友</h3> 

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<pre></pre> <pre name="code" class="java"> public void shareWexinFriend() {   if (iShareService.isWeixinInstalled()) {    mWXShareBitmap = mLatesBitmap;    WXImageObject imgObject = new WXImageObject(mWXShareBitmap);    WXMediaMessage mediaMessage = new WXMediaMessage();    mediaMessage.mediaObject = imgObject;    //设置缩略图    Bitmap thumbBmp = Bitmap.createScaledBitmap(mWXShareBitmap,50,80,true);    mediaMessage.thumbData = bmpToByteArray(thumbBmp,true);    //request to wx    SendMessageToWX.Req req = new SendMessageToWX.Req();    req.transaction =buildTransaction("img");    req.message = mediaMessage;    req.scene = SendMessageToWX.Req.WXSceneSession;    IWXAPI api = WXAPIFactory.createWXAPI(mActivity,"微信分享id",true);    api.registerApp("微信分享id");    boolean result = api.sendReq(req);    Log.i(TAG,"share to weixin:"+result );   } else {    ToastUtils.show(mActivity, "您没有安装微信客户端");   } }</pre> <h3><a name="t9"></a>3、分享到QQ好友</h3> <pre name="code" class="java"> public void shareToQQFriend() {   if (iShareService.isQQInstalled()) {//判断QQ是否安装    Tencent tencent = Tencent.createInstance("qq id", mActivity);    Bundle params = new Bundle();    params.putString(QQShare.SHARE_TO_QQ_IMAGE_LOCAL_URL, mLatestImagePath);//QQ分享只能分享本地图片,传入本地图片路径    params.putInt(QQShare.SHARE_TO_QQ_KEY_TYPE, QQShare.SHARE_TO_QQ_TYPE_IMAGE);    tencent.shareToQQ(mActivity, params, new IUiListener() {//分享后的回调     @Override     public void onComplete(Object o) {      ToastUtils.show(mActivity,"分享成功!");     }     @Override     public void onError(UiError uiError) {      ToastUtils.show(mActivity,"分享失败,稍后重试!");      Log.i(TAG,"shareToQQ onError");     }     @Override     public void onCancel() {      Log.i(TAG,"shareToQQ onCancel");     }    });   } else {    ToastUtils.show(mActivity, "您没有安装QQ客户端");   } }</pre> <pre></pre> <pre></pre> 
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4 QQ空间分享

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public void shareToQQZone() {   if (iShareService.isQQInstalled()) {    Tencent tencent = Tencent.createInstance("QQ id", mActivity);    Bundle params = new Bundle();    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, new IUiListener() {     @Override     public void onComplete(Object o) {      ToastUtils.show(mActivity,"分享成功!");     }     @Override     public void onError(UiError uiError) {      ToastUtils.show(mActivity,"分享失败,请稍后重试!");      Log.i(TAG,"shareToQQ onError,error code:"+uiError.errorCode);     }     @Override     public void onCancel() {      Log.i(TAG,"shareToQQ onCancel");     }    });   } else {    ToastUtils.show(mActivity, "您没有安装QQ客户端");   } 
.

5 微博分享 

.
public void shareToWeibo() {   if (iShareService.isWeiboInstalled()) {    Log.i(TAG,"iShareService.isWeiboInstalled()");    IWeiboShareAPI api = WeiboShareSDK.createWeiboAPI(mActivity, "微博id");    if(api.isWeiboAppInstalled()) {     api.registerApp();    }    WeiboMultiMessage weiboMultiMessage = new WeiboMultiMessage();    Bitmap bitmap = mLatesBitmap;//截图bitmap    ImageObject imageObject = new ImageObject();    imageObject.setImageObject(bitmap);    weiboMultiMessage.imageObject = imageObject;    SendMultiMessageToWeiboRequest request = new SendMultiMessageToWeiboRequest();    request.transaction = String.valueOf(System.currentTimeMillis());    request.multiMessage = weiboMultiMessage;    boolean requestWeibo = api.sendRequest(request);    Log.i(TAG,"share to weibo:"+requestWeibo );   } else {    ToastUtils.show(mActivity, "您没有安装微博客户端");   } } 
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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..网站的支持!

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