- 分享图片代码如下
- 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);
}
}
- 分享的图片黑屏
- 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
- 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;
}
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