一. 配置
(1)module下build.gradle
implementation ('com.xyzlf.share:sharesdk:0.0.10') {
exclude group: 'com.android.support', module: 'appcompat-v7'
}
(2)AndroidManifest.xml
权限：
与activity平级，设置微信key：
二. 实现
(1)注册wxapi,
IWXAPI wxapi = WXAPIFactory.createWXAPI(this, "你的微信appid", true);
// 注册
wxapi.registerApp("你的微信appid");
(2)分享图片方法
private static final int THUMB_SIZE = 150;
/**
* 分享图片
* @param bitmap 图片
* @param shareType 0：分享到好友 1：分享到朋友圈
*/
private void sharePicture(Bitmap bitmap, int shareType) {
WXImageObject imgObj = new WXImageObject(bitmap);
WXMediaMessage msg = new WXMediaMessage();
msg.mediaObject = imgObj;
Bitmap thumbBitmap = Bitmap.createScaledBitmap(bitmap, THUMB_SIZE, THUMB_SIZE, true);
bitmap.recycle();
msg.thumbData = Util.bmpToByteArray(thumbBitmap); //设置缩略图
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("imgshareappdata");
req.message = msg;
req.scene = shareType;
wxapi.sendReq(req);
}
public static byte[] bmpToByteArray(Bitmap bm) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
press(pressFormat.PNG, 100, baos);
return baos.toByteArray();
}
private String buildTransaction(final String type) {
return (type == null) ? String.valueOf(System.currentTimeMillis()) : type + System.currentTimeMillis();
}
(3)截屏方法(截取当前界面)
/**
* 截屏
*
* @param activity 需要截屏的activity
* @return
*/
public static Bitmap capture(Activity activity) {
activity.getWindow().getDecorView().setDrawingCacheEnabled(true);
Bitmap bmp = activity.getWindow().getDecorView().getDrawingCache();
return bmp;
}
(4)调用
sharePicture(capture(MainActivity.this), 0);
至此，分享图片功能完成。
三. 扩展
下面是微信分享文字，链接，视频的
/*
* 分享文字
*/
private void shareText(String text, int shareType) {
//初始化一个WXTextObject对象
WXTextObject textObj = new WXTextObject();
textObj.text = text;
//用WXTextObject对象初始化一个WXMediaMessage对象
WXMediaMessage msg = new WXMediaMessage();
msg.mediaObject = textObj;
msg.description = text;
//构造一个Req
SendMessageToWX.Req req = new SendMessageToWX.Req();
//transaction字段用于唯一标识一个请求
req.transaction = buildTransaction("textshare");
req.message = msg;
//发送的目标场景， 可以选择发送到会话 WXSceneSession 或者朋友圈 WXSceneTimeline。 默认发送到会话。
req.scene = shareType;
mWXApi.sendReq(req);
}
/*
* 分享链接
*/
private void shareWebPage(ShareContent shareContent, int shareType) {
WXWebpageObject webpage = new WXWebpageObject();
webpage.webpageUrl = shareContent.getURL();
WXMediaMessage msg = new WXMediaMessage(webpage);
msg.title = shareContent.getTitle();
msg.description = shareContent.getContent();
Bitmap thumb = BitmapFactory.decodeResource(mContext.getResources(), shareContent.getPictureResource());
if(thumb == null) {
Toast.makeText(mContext, "图片不能为空", Toast.LENGTH_SHORT).show();
} else {
msg.thumbData = Util.bmpToByteArray(thumb);
}
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("webpage");
req.message = msg;
req.scene = shareType;
mWXApi.sendReq(req);
}
/*
* 分享视频
*/
private void shareVideo(ShareContent shareContent, int shareType) {
WXVideoObject video = new WXVideoObject();
video.videoUrl = shareContent.getURL();
WXMediaMessage msg = new WXMediaMessage(video);
msg.title = shareContent.getTitle();
msg.description = shareContent.getContent();
Bitmap thumb = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.ic_launcher_background);
// BitmapFactory.decodeStream(new URL(video.videoUrl).openStream());
/**
* 测试过程中会出现这种情况，会有个别手机会出现调不起微信客户端的情况。造成这种情况的原因是微信对缩略图的大小、title、description等参数的大小做了限制，所以有可能是大小超过了默认的范围。
* 一般情况下缩略图超出比较常见。Title、description都是文本，一般不会超过。
*/
Bitmap thumbBitmap = Bitmap.createScaledBitmap(thumb, THUMB_SIZE, THUMB_SIZE, true);
thumb.recycle();
msg.thumbData = Util.bmpToByteArray(thumbBitmap);
SendMessageToWX.Req req = new SendMessageToWX.Req();
req.transaction = buildTransaction("video");
req.message = msg;
req.scene = shareType;
mWXApi.sendReq(req);
}
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