Android应用接入微信分享的实例代码

最近项目中要接入微信分享，记录下接入流程

注册应用信息并下载必要工具

1. 在注册应用信息
2. 下载 签名生成工具获取待接入应用的签名
3. 应用信息填入签名

注意：由于一般调试签名和正式签名不一致，测试时可填入测试包的签名，上线时需要改为正式包的签名

接入

在build.gradle中，添加如下依赖：

dependencies {
  compile 'com.tencent.mm.opensdk:wechat-sdk-android-with-mta:+'
}

或：

dependencies {
  compile 'com.tencent.mm.opensdk:wechat-sdk-android-without-mta:+'
}

其中，前者包含统计功能

androidmanifest.xml中添加权限和微信回调activity

<uses-permission android:name="android.permission.internet" />
<uses-permission android:name="android.permission.modify_audio_settings"/>
<uses-permission android:name="android.permission.write_external_storage"/>

<!-- for mta statistics -->
<uses-permission android:name="android.permission.access_wifi_state"/>
<uses-permission android:name="android.permission.read_phone_state"/>
<uses-permission android:name="android.permission.access_network_state"/>

<activity
  android:name=".wxentryactivity"
  android:exported="true"
  android:screenorientation="portrait"
  android:theme="@style/apptheme.fullscreen.translucent"/>

这里使用了一个透明的activity来处理微信分享结果回调

主题：

<style name="apptheme.fullscreen" parent="theme.appcompat.noactionbar">
  <item name="android:windownotitle">true</item>
  <item name="android:windowfullscreen">true</item>
  <item name="android:windowtranslucentnavigation" tools:targetapi="kitkat">true</item>
</style>

<style name="apptheme.fullscreen.translucent">
  <item name="android:windowbackground">@android:color/transparent</item>
  <item name="android:windowistranslucent">true</item>
  <item name="android:windowanimationstyle">@android:style/animation.translucent</item>
</style>

activity

当微信分享成功，点击返回app时，微信会主动调用wxentryactivity，并将结果通过intent传给wxentryactivity，此时调用api.handleintent(getintent(), this)对结果进行处理，handleintent第二个参数为iwxapieventhandler，分享结果会在onresp方法中处理，在这里我们发送一个广播，并在wxshare对象中对该广播进行监听

public class wxentryactivity extends baseactivity implements iwxapieventhandler {

    private iwxapi api;

    @override
    protected void oncreate(bundle savedinstancestate) {
      super.oncreate(savedinstancestate);
      logger.i("wxentryactivity");
      wxshare share = new wxshare(this);
      api = share
  //        .register()
          .getapi();

      //注意：
      //第三方开发者如果使用透明界面来实现wxentryactivity，需要判断handleintent的返回值，如果返回值为false，则说明入参不合法未被sdk处理，应finish当前透明界面，避免外部通过传递非法参数的intent导致停留在透明界面，引起用户的疑惑
      try {
        if (!api.handleintent(getintent(), this)) {
          finish();
        }
      } catch (exception e) {
        e.printstacktrace();
      }
    }

    @override
    protected void onnewintent(intent intent) {
      super.onnewintent(intent);

      logger.i("onnewintent");
      setintent(intent);
      if (!api.handleintent(intent, this)) {
        finish();
      }
    }

    @override
    public void onreq(basereq basereq) {
    }

    @override
    public void onresp(baseresp baseresp) {
      intent intent = new intent(wxshare.action_share_response);
      intent.putextra(wxshare.extra_result, new wxshare.response(baseresp));
      sendbroadcast(intent);
      finish();
    }

  }

工具类

public class wxshare {

    public static final string app_id = "wx0123456789";
    public static final string action_share_response = "action_wx_share_response";
    public static final string extra_result = "result";

    private final context context;
    private final iwxapi api;
    private onresponselistener listener;
    private responsereceiver receiver;

    public wxshare(context context) {
      api = wxapifactory.createwxapi(context, app_id);
      this.context = context;
    }

    public wxshare register() {
      // 微信分享
      api.registerapp(app_id);
      receiver = new responsereceiver();
      intentfilter filter = new intentfilter(action_share_response);
      context.registerreceiver(receiver, filter);
      return this;
    }

    public void unregister() {
      try {
        api.unregisterapp();
        context.unregisterreceiver(receiver);
      } catch (exception e) {
        e.printstacktrace();
      }
    }

    public wxshare share(string text) {
      wxtextobject textobj = new wxtextobject();
      textobj.text = text;

      wxmediamessage msg = new wxmediamessage();
      msg.mediaobject = textobj;
  //    msg.title = "will be ignored";
      msg.description = text;

      sendmessagetowx.req req = new sendmessagetowx.req();
      req.transaction = buildtransaction("text");
      req.message = msg;
      req.scene = sendmessagetowx.req.wxscenesession;

      boolean result = api.sendreq(req);
      logger.i("text shared: " + result);
      return this;
    }

    public iwxapi getapi() {
      return api;
    }

    public void setlistener(onresponselistener listener) {
      this.listener = listener;
    }

    private string buildtransaction(final string type) {
      return (type == null) ? string.valueof(system.currenttimemillis()) : type + system.currenttimemillis();
    }

    private class responsereceiver extends broadcastreceiver {

      @override
      public void onreceive(context context, intent intent) {
        response response = intent.getparcelableextra(extra_result);
        logger.d("type: " + response.gettype());
        logger.d("errcode: " + response.errcode);
        string result;
        if (listener != null) {
          if (response.errcode == baseresp.errcode.err_ok) {
            listener.onsuccess();
          } else if (response.errcode == baseresp.errcode.err_user_cancel) {
            listener.oncancel();
          } else {
            switch (response.errcode) {
              case baseresp.errcode.err_auth_denied:
                result = "发送被拒绝";
                break;
              case baseresp.errcode.err_unsupport:
                result = "不支持错误";
                break;
              default:
                result = "发送返回";
                break;
            }
            listener.onfail(result);
          }
        }
      }
    }

    public static class response extends baseresp implements parcelable {

      public int errcode;
      public string errstr;
      public string transaction;
      public string openid;

      private int type;
      private boolean checkresult;

      public response(baseresp baseresp) {
        errcode = baseresp.errcode;
        errstr = baseresp.errstr;
        transaction = baseresp.transaction;
        openid = baseresp.openid;
        type = baseresp.gettype();
        checkresult = baseresp.checkargs();
      }

      @override
      public int gettype() {
        return type;
      }

      @override
      public boolean checkargs() {
        return checkresult;
      }


      @override
      public int describecontents() {
        return 0;
      }

      @override
      public void writetoparcel(parcel dest, int flags) {
        dest.writeint(this.errcode);
        dest.writestring(this.errstr);
        dest.writestring(this.transaction);
        dest.writestring(this.openid);
        dest.writeint(this.type);
        dest.writebyte(this.checkresult ? (byte) 1 : (byte) 0);
      }

      protected response(parcel in) {
        this.errcode = in.readint();
        this.errstr = in.readstring();
        this.transaction = in.readstring();
        this.openid = in.readstring();
        this.type = in.readint();
        this.checkresult = in.readbyte() != 0;
      }

      public static final creator<response> creator = new creator<response>() {
        @override
        public response createfromparcel(parcel source) {
          return new response(source);
        }

        @override
        public response[] newarray(int size) {
          return new response[size];
        }
      };
    }

  }

接口

public interface onresponselistener {
  void onsuccess();

  void oncancel();

  void onfail(string message);
}

使用

在需要使用微信分享的activity中：

@override
protected void oncreate(bundle savedinstancestate) {
  wxshare = new wxshare(this);
  wxshare.setlistener(new onresponselistener() {
    @override
    public void onsuccess() {
      // 分享成功
    }

    @override
    public void oncancel() {
      // 分享取消
    }

    @override
    public void onfail(string message) {
      // 分享失败
    }
  });
}

@override
protected void onstart() {
  super.onstart();
  wxshare.register();
}

@override
protected void ondestroy() {
  wxshare.unregister();
  super.ondestroy();
}

启动分享

wxshare.share("这是要分享的文字");

到这里微信分享就完成啦！

另外，在微信官方例程中，有个定时刷新应用注册信息的receiver

androidmanifest.xml中添加:

<receiver
  android:name=".appregister"
  android:permission="com.tencent.mm.plugin.permission.send">
  <intent-filter>
    <action android:name="com.tencent.mm.plugin.openapi.intent.action_refresh_wxapp"/>
  </intent-filter>
</receiver>

代码：

public class appregister extends broadcastreceiver {

  @override
  public void onreceive(context context, intent intent) {
    final iwxapi api = wxapifactory.createwxapi(context, null);

    // 将该app注册到微信
    api.registerapp(wxshare.app_id);
  }
}

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。