s wb="文件路径"
.建议添加/sdcard不要删
sit(a, "action", "android.intent.action.SEND")
sit(a, "type", "*/*")
sit(a,"classname","com.tencent.mobileqq", "com.tencent.mobileqq.activity.JumpActivity")
sit(a, "extra", "android.intent.extra.STREAM",wb)
uit(a, "chooser", "分享文件")