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分享图片代码如下
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bitmap.recycle() 资源被回收了,所以每次分享的bitmap必须是重新创建出来的
/** * 微信图片分享 * * @param shareType {@link SendMessageToWX.Req#WXSceneSession} 分享给微信好友 * {@link SendMessageToWX.Req#WXSceneTimeline} 分享给朋友圈 * {@link SendMessageToWX.Req#WXSceneFavorite} 收藏 */ public static void shareToWXImage(int shareType, @NonNull Bitmap bitmap, @NonNull OnShareListener listener) { if (checkWeChatShareInit(listener)) { WXMediaMessage msg = new WXMediaMessage(); msg.mediaObject = new WXImageObject(bitmap); Bitmap thumbBmp = Bitmap.createScaledBitmap(bitmap, SHARE_THUMBNAIL_SIZE, SHARE_THUMBNAIL_SIZE, true); bitmap.recycle(); msg.thumbData = Util.bmpToByteArray(thumbBmp, true); // 设置缩略图 SendMessageToWX.Req req = new SendMessageToWX.Req(); req.transaction = buildTransaction("img"); req.message = msg; req.scene = shareType; mWXApi.sendReq(req); } }
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分享的图片黑屏
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原因是图片透明部分不做处理就是黑色的,那块区域没有颜色
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方法是透明转白色
/** * bitmap中的透明色用白色替换 * * @param bitmap * @return */ public static Bitmap changeColor(Bitmap bitmap) { if (bitmap == null) { return null; } int w = bitmap.getWidth(); int h = bitmap.getHeight(); int[] colorArray = new int[w * h]; int n = 0; for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { int color = getMixtureWhite(bitmap.getPixel(j, i)); colorArray[n++] = color; } } return Bitmap.createBitmap(colorArray, w, h, Bitmap.Config.ARGB_8888); } /** * 获取和白色混合颜色 * * @return */ private static int getMixtureWhite(int color) { int alpha = Color.alpha(color); int red = Color.red(color); int green = Color.green(color); int blue = Color.blue(color); return Color.rgb(getSingleMixtureWhite(red, alpha), getSingleMixtureWhite (green, alpha), getSingleMixtureWhite(blue, alpha)); } /** * 获取单色的混合值 * * @param color * @param alpha * @return */ private static int getSingleMixtureWhite(int color, int alpha) { int newColor = color * alpha / 255 + 255 - alpha; return newColor > 255 ? 255 : newColor; }