Android微信SDK实现分享

用微信提供的SDK来实现分享：

从http://open.weixin.qq.com下载Android相关的jar包，将libammsdk.jar加入到项目中。

微信分享的核心类，部分代码如下：

WechatShareManager.java

package com.jackie.umeng.share;  import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.util.Log; import android.widget.Toast;  import com.tencent.mm.sdk.modelmsg.SendMessageToWX; import com.tencent.mm.sdk.modelmsg.WXImageObject; import com.tencent.mm.sdk.modelmsg.WXMediaMessage; import com.tencent.mm.sdk.modelmsg.WXTextObject; import com.tencent.mm.sdk.modelmsg.WXVideoObject; import com.tencent.mm.sdk.modelmsg.WXWebpageObject; import com.tencent.mm.sdk.openapi.IWXAPI; import com.tencent.mm.sdk.openapi.WXAPIFactory;  /**  * 实现微信分享功能的核心类  * @author chengcj1  *  */ public class WechatShareManager {    private static final int THUMB_SIZE = 150;    public static final int WECHAT_SHARE_WAY_TEXT = 1; //文字  public static final int WECHAT_SHARE_WAY_PICTURE = 2; //图片  public static final int WECHAT_SHARE_WAY_WEBPAGE = 3; //链接  public static final int WECHAT_SHARE_WAY_VIDEO = 4; //视频  public static final int WECHAT_SHARE_TYPE_TALK = SendMessageToWX.Req.WXSceneSession; //会话  public static final int WECHAT_SHARE_TYPE_FRENDS = SendMessageToWX.Req.WXSceneTimeline; //朋友圈    private static WechatShareManager mInstance;  private ShareContent mShareContentText, mShareContentPicture, mShareContentWebpag, mShareContentVideo;  private IWXAPI mWXApi;  private Context mContext;    private WechatShareManager(Context context){   this.mContext = context;   //初始化数据   //初始化微信分享代码   initWechatShare(context);  }    /**   * 获取WeixinShareManager实例   * 非线程安全，请在UI线程中操作   * @return   */  public static WechatShareManager getInstance(Context context){   if(mInstance == null){    mInstance = new WechatShareManager(context);   }   return mInstance;  }    private void initWechatShare(Context context){   if (mWXApi == null) {    mWXApi = WXAPIFactory.createWXAPI(context, WechatShareUtil.WECHAT_APP_ID, true);   }   mWXApi.registerApp(WechatShareUtil.WECHAT_APP_ID);  }    /**   * 通过微信分享   * @param shareWay 分享的方式（文本、图片、链接）   * @param shareType 分享的类型（朋友圈，会话）   */  public void shareByWebchat(ShareContent shareContent, int shareType){   switch (shareContent.getShareWay()) {   case WECHAT_SHARE_WAY_TEXT:    shareText(shareContent, shareType);    break;   case WECHAT_SHARE_WAY_PICTURE:    sharePicture(shareContent, shareType);    break;   case WECHAT_SHARE_WAY_WEBPAGE:    shareWebPage(shareContent, shareType);    break;   case WECHAT_SHARE_WAY_VIDEO:    shareVideo(shareContent, shareType);    break;   }  }    private abstract class ShareContent {   protected abstract int getShareWay();   protected abstract String getContent();   protected abstract String getTitle();   protected abstract String getURL();   protected abstract int getPictureResource();  }    /**   * 设置分享文字的内容   * @author chengcj1   *   */  public class ShareContentText extends ShareContent {   private String content;      /**    * 构造分享文字类    * @param text 分享的文字内容    */   public ShareContentText(String content){    this.content = content;   }      @Override   protected int getShareWay() {    return WECHAT_SHARE_WAY_TEXT;   }    @Override   protected String getContent() {    return content;   }    @Override   protected String getTitle() {    return null;   }    @Override   protected String getURL() {    return null;   }    @Override   protected int getPictureResource() {    return -1;   }  }    /*   * 获取文本分享对象   */  public ShareContent getShareContentText(String content) {   if (mShareContentText == null) {    mShareContentText = new ShareContentText(content);   }   return (ShareContentText) mShareContentText;  }    /**   * 设置分享图片的内容   * @author chengcj1   *   */  public class ShareContentPicture extends ShareContent {   private int pictureResource;   public ShareContentPicture(int pictureResource){    this.pictureResource = pictureResource;   }      @Override   protected int getShareWay() {    return WECHAT_SHARE_WAY_PICTURE;   }      @Override   protected int getPictureResource() {    return pictureResource;   }      @Override   protected String getContent() {    return null;   }    @Override   protected String getTitle() {    return null;   }    @Override   protected String getURL() {    return null;   }  }    /*   * 获取图片分享对象   */  public ShareContent getShareContentPicture(int pictureResource) {   if (mShareContentPicture == null) {    mShareContentPicture = new ShareContentPicture(pictureResource);   }   return (ShareContentPicture) mShareContentPicture;  }    /**   * 设置分享链接的内容   * @author chengcj1   *   */  public class ShareContentWebpage extends ShareContent {   private String title;   private String content;   private String url;   private int pictureResource;   public ShareContentWebpage(String title, String content, String url, int pictureResource){    this.title = title;    this.content = content;    this.url = url;    this.pictureResource = pictureResource;   }      @Override   protected int getShareWay() {    return WECHAT_SHARE_WAY_WEBPAGE;   }    @Override   protected String getContent() {    return content;   }    @Override   protected String getTitle() {    return title;   }    @Override   protected String getURL() {    return url;   }    @Override   protected int getPictureResource() {    return pictureResource;   }  }    /*   * 获取网页分享对象   */  public ShareContent getShareContentWebpag(String title, String content, String url, int pictureResource) {   if (mShareContentWebpag == null) {    mShareContentWebpag = new ShareContentWebpage(title, content, url, pictureResource);   }   return (ShareContentWebpage) mShareContentWebpag;  }    /**   * 设置分享视频的内容   * @author chengcj1   *   */  public class ShareContentVideo extends ShareContent {   private String url;   public ShareContentVideo(String url) {    this.url = url;   }    @Override   protected int getShareWay() {    return WECHAT_SHARE_WAY_VIDEO;   }    @Override   protected String getContent() {    return null;   }    @Override   protected String getTitle() {    return null;   }    @Override   protected String getURL() {    return url;   }    @Override   protected int getPictureResource() {    return -1;   }  }    /*   * 获取视频分享内容   */  public ShareContent getShareContentVideo(String url) {   if (mShareContentVideo == null) {    mShareContentVideo = new ShareContentVideo(url);   }   return (ShareContentVideo) mShareContentVideo;  }    /*   * 分享文字   */  private void shareText(ShareContent shareContent, int shareType) {   String text = shareContent.getContent();   //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);  }   /*   * 分享图片   */  private void sharePicture(ShareContent shareContent, int shareType) {   Bitmap bitmap = BitmapFactory.decodeResource(mContext.getResources(), shareContent.getPictureResource());   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, true); //设置缩略图      SendMessageToWX.Req req = new SendMessageToWX.Req();   req.transaction = buildTransaction("imgshareappdata");   req.message = msg;   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, true);   }      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.send_music_thumb); //  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, true);      SendMessageToWX.Req req = new SendMessageToWX.Req();   req.transaction = buildTransaction("video");   req.message = msg;   req.scene = shareType;   mWXApi.sendReq(req);  }    private String buildTransaction(final String type) {   return (type == null) ? String.valueOf(System.currentTimeMillis()) : type + System.currentTimeMillis();  } }

MainActivity.java

package com.jackie.umeng.share;  import com.jackie.umeng.share.WechatShareManager.ShareContentPicture; import com.jackie.umeng.share.WechatShareManager.ShareContentText; import com.jackie.umeng.share.WechatShareManager.ShareContentVideo;  import android.app.Activity; import android.content.Context; import android.content.pm.PackageManager; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast;  public class MainActivity extends Activity implements OnClickListener {  private Button mShareText, mSharePicture, mShareVideo;  private WechatShareManager mShareManager;    private Context mContext;   @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);      mShareText = (Button) findViewById(R.id.share_text);   mSharePicture = (Button) findViewById(R.id.share_picture);   mShareVideo = (Button) findViewById(R.id.share_video);   mShareText.setOnClickListener(this);   mSharePicture.setOnClickListener(this);   mShareVideo.setOnClickListener(this);      mContext = this;      mShareManager = WechatShareManager.getInstance(mContext);  }   @Override  public void onClick(View v) {   if (!isWebchatAvaliable()) {    Toast.makeText(mContext, "请先安装微信", Toast.LENGTH_LONG).show();    return;   }   switch (v.getId()) {   case R.id.share_text:    ShareContentText mShareContentText = (ShareContentText) mShareManager.getShareContentText("微信文本分享");    mShareManager.shareByWebchat(mShareContentText, WechatShareManager.WECHAT_SHARE_TYPE_FRENDS);    break;   case R.id.share_picture:    ShareContentPicture mShareContentPicture = (ShareContentPicture) mShareManager.getShareContentPicture(R.drawable.share);    mShareManager.shareByWebchat(mShareContentPicture, WechatShareManager.WECHAT_SHARE_TYPE_FRENDS);    break;   case R.id.share_video:    ShareContentVideo mShareContentVideo = (ShareContentVideo) mShareManager.getShareContentVideo("http://baidu.hz.letv.com/kan/agSlT?fr=v.baidu.com/");    mShareManager.shareByWebchat(mShareContentVideo, WechatShareManager.WECHAT_SHARE_TYPE_FRENDS);    break;   default:    break;   }  }    private boolean isWebchatAvaliable() {   //检测手机上是否安装了微信   try {    getPackageManager().getPackageInfo("com.tencent.mm", PackageManager.GET_ACTIVITIES);    return true;   } catch (Exception e) {    return false;   }  } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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