<activity 
      android:name=".wxapi.WXEntryActivity" 
      android:exported="true">//產(chǎn)生回調(diào) 
    </activity> 

private final String APP_ID= "wx108514397eea5f77"; 
  private IWXAPI api; 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_wxentry); 
    api = WXAPIFactory.createWXAPI(this, APP_ID, false); 
    api.registerApp(APP_ID); 
    api.handleIntent(getIntent(), this); 
  } 
  @Override 
  public void onReq(BaseReq baseReq) { 
  } 
  @Override 
  public void onResp(BaseResp baseResp) { 
    switch (baseResp.errCode) { 
      case BaseResp.ErrCode.ERR_OK: 
        Toast.makeText(this, "分享成功", Toast.LENGTH_LONG).show(); 
        break; 
      case BaseResp.ErrCode.ERR_USER_CANCEL: 
        Toast.makeText(this, "分享取消", Toast.LENGTH_LONG).show(); 
        break; 
      case BaseResp.ErrCode.ERR_AUTH_DENIED: 
        Toast.makeText(this, "被拒絕", Toast.LENGTH_LONG).show(); 
        break; 
      default: 
        Toast.makeText(this, "未知錯(cuò)誤", Toast.LENGTH_LONG).show(); 
        break; 
    } 
    finish(); 
  }

private void weiChat(int flag) { 
    if (!api.isWXAppInstalled()) { 
      return; 
    } 
    //創(chuàng)建一個(gè)WXWebPageObject對象，用于封裝要發(fā)送的Url 
    WXWebpageObject webpage = new WXWebpageObject(); 
    webpage.webpageUrl = "http://www.baidu.com/"; 
    //創(chuàng)建一個(gè)WXMediaMessage對象 
    WXMediaMessage msg = new WXMediaMessage(webpage); 
    msg.title = "測試"; 
    msg.description = "ceshi "; 
    SendMessageToWX.Req req = new SendMessageToWX.Req(); 
    req.transaction = String.valueOf(System.currentTimeMillis());//transaction字段用于唯一標(biāo)識一個(gè)請求，這個(gè)必須有，否則會出錯(cuò) 
    req.message = msg; 
    //表示發(fā)送給朋友圈 WXSceneTimeline 表示發(fā)送給朋友 WXSceneSession 
    req.scene = flag == 0 ? SendMessageToWX.Req.WXSceneSession : SendMessageToWX.Req.WXSceneTimeline; 
    api.sendReq(req); 
  }