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分享到微信好友或朋友圈

时间:2016-04-29 19:10:34      阅读:404      评论:0      收藏:0      [点我收藏+]

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这周末学习了如何将图片,文本,分享到微信好友或者是朋友圈,自己亲手敲了一把。结果一个bug让我很不爽。待会来谈谈bug是什么。
好了,写代码之前必须做这几件事情。在微信开发者网站上注册账号,填写app名称,包名,应用签名。第三个应用签名本以为自己随便写一个,其实不然,需要下载签名生成工具,然后安装到手机上(此为我的愚蠢Bug,后来看微信官网才解决了),还需要下载Android开发工具包,里面有个jar包需要导入到Android Studio中。注意,申请ok后会展示:技术分享
技术分享
下面演示下Demo:
先来展示下布局效果吧:
技术分享

再来看一下工程目录:
技术分享

话说,展示效果也他妈太大了吧。

代码如下:

public class MainActivity extends Activity {
    private IWXAPI api;
    private CheckBox mCheckBox;
    private static final String App_ID = "wxbb5a317744264a34";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        api = WXAPIFactory.createWXAPI(this, App_ID);
        //注册ID
        api.registerApp(App_ID);
        mCheckBox = (CheckBox) findViewById(R.id.checkBox);
    }

    //启动微信客户端
    public void btn_open_weixin(View view) {
        //唯一标识符,采用text+当前时间{
        //开启微信
        api.openWXApp();
    }
//生成唯一标识符
    public String onlySign(final String text) {
        //当前时间+字符串
        return (text == null ? String.valueOf(System.currentTimeMillis()) : String.valueOf(text + System.currentTimeMillis()));


    }

    public void btn_send(View view) {
        //分享文本到好友或者朋友圈,如果checkbox未选中,则发送给好友,否则,发送到朋友圈。
        //创建EditText
        final EditText mEditText = new EditText(this);
        mEditText.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
                RelativeLayout.LayoutParams.WRAP_CONTENT));
        mEditText.setText("默认的分享的文本");
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setIcon(R.mipmap.ic_launcher);
        builder.setTitle("分享");
        builder.setMessage("请输入要分享的文本");
        builder.setView(mEditText);
        builder.setPositiveButton("分享", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //获取要分享的内容
                String text = mEditText.getText().toString();
                if (text == null || text.length() == 0) {
                    return;
                }
                //第一步:创建WXTextObject对象,用于封装text
                WXTextObject object = new WXTextObject();
                object.text = text;

                //第二步:拿到WXMediaMessage对象,用于客户端向微信发送数据
                WXMediaMessage msg = new WXMediaMessage();
                msg.mediaObject = object;
                msg.description = text;

                //第三步:拿到SendMessageToWX.Req对象,用于请求微信客户端
                SendMessageToWX.Req req = new SendMessageToWX.Req();
                req.message = msg;
                //生成唯一标识符
                req.transaction = onlySign("text");

                //建立场景,到底是发送给朋友还是朋友圈
                req.scene = mCheckBox.isChecked() ? SendMessageToWX.Req.WXSceneTimeline : SendMessageToWX.Req.WXSceneSession;
                //这次真的发送了

                Toast.makeText(MainActivity.this, String.valueOf(api.sendReq(req)), Toast.LENGTH_LONG).show();

            }
        });
        builder.setNegativeButton("取消", null);
        AlertDialog alertDialog = builder.create();
        alertDialog.show();

    }

    //将Bitmap装换成Byte数组,用来压缩图片
    private byte[] BmpToByteArray(final Bitmap bitmap, final boolean isRecycle) {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream);
        if (isRecycle) {
            bitmap.recycle();
        }
        byte[] result = outputStream.toByteArray();
        try {
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

    //发送二进制图片
    public void btn_send_binary_image(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.robot);
        WXImageObject object = new WXImageObject(bitmap);

        WXMediaMessage message = new WXMediaMessage();
        message.mediaObject = object;

        Bitmap thumbBmp = Bitmap.createScaledBitmap(bitmap, 80, 80, true);
        bitmap.recycle();

        message.thumbData = BmpToByteArray(thumbBmp, true);

        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.message = message;
        req.scene = mCheckBox.isChecked() ? SendMessageToWX.Req.WXSceneTimeline : SendMessageToWX.Req.WXSceneSession;
        req.transaction = onlySign("BinaryImage");

        Toast.makeText(MainActivity.this, String.valueOf(api.sendReq(req)), Toast.LENGTH_LONG).show();


    }

    public void btn_send_local_Image(View view) {
        String path = "/sdcard/1461370355308.jpeg";

        File file = new File(path);
        if (!file.exists()) {
            Toast.makeText(this, "图片不存在", Toast.LENGTH_LONG).show();
            return;
        }

        WXImageObject object = new WXImageObject();
        object.setImagePath(path);
        WXMediaMessage message = new WXMediaMessage();
        message.mediaObject = object;
        Bitmap bitmap = BitmapFactory.decodeFile(path);
        Bitmap thumbBmp = Bitmap.createScaledBitmap(bitmap, 80, 80, true);
        bitmap.recycle();

        message.thumbData = BmpToByteArray(thumbBmp, true);

        SendMessageToWX.Req req = new SendMessageToWX.Req();
        req.message = message;
        req.scene = mCheckBox.isChecked() ? SendMessageToWX.Req.WXSceneTimeline : SendMessageToWX.Req.WXSceneSession;
        req.transaction = onlySign("LocalImage");

        Toast.makeText(MainActivity.this, String.valueOf(api.sendReq(req)), Toast.LENGTH_LONG).show();


    }

    public void btn_send_Internet_image(View view) {
     Thread thread  = new Thread(new Runnable() {
         @Override
         public void run() {
             try {
                 String uri   = "http://img1.imgtn.bdimg.com/it/u=2468413383,2378712674&fm=21&gp=0.jpg";
                 WXImageObject object  = new WXImageObject();
                // object.imageUrl = uri;
                 object.setImagePath(uri);

                 WXMediaMessage message  = new WXMediaMessage();
                 message.mediaObject  =object;
                 Bitmap bitmap  =BitmapFactory.decodeStream(new URL(uri).openStream());
                 Bitmap thumbBmp  = Bitmap.createScaledBitmap(bitmap,80,80,true);
                 bitmap.recycle();

                 message.thumbData  = BmpToByteArray(thumbBmp,true);

                 SendMessageToWX.Req req =  new SendMessageToWX.Req();
                 req.message  = message;
                 req.scene = mCheckBox.isChecked()?SendMessageToWX.Req.WXSceneTimeline:SendMessageToWX.Req.WXSceneSession;
                 req.transaction =  onlySign("URLImage");

                 Toast.makeText(MainActivity.this,String.valueOf(api.sendReq(req)),Toast.LENGTH_LONG).show();
             }catch (Exception e)
             {
                 e.printStackTrace();
             }
         }

     });
thread.start();
    }
    public void btn_send_audio(View view){
        WXMusicObject object  =new WXMusicObject();
        object.musicUrl = "http://music.baidu.com/song/290008";

        WXMediaMessage msg  = new WXMediaMessage();
        msg.title="我只在乎你";
        msg.description="演唱者:邓丽君";
        msg.mediaObject = object;
        Bitmap thumbBit = BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher);
        msg.thumbData = BmpToByteArray(thumbBit,true);
        SendMessageToWX.Req req =  new SendMessageToWX.Req();
        req.message  = msg;
        req.scene = mCheckBox.isChecked()?SendMessageToWX.Req.WXSceneTimeline:SendMessageToWX.Req.WXSceneSession;
        req.transaction =  onlySign("URLAudio");

        Toast.makeText(MainActivity.this,String.valueOf(api.sendReq(req)),Toast.LENGTH_LONG).show();
    }
    public void btn_send_video(View view){
        WXVideoObject object = new WXVideoObject();
        object.videoUrl="http://open.163.com/movie/2016/4/C/K/MBJEDVIOI_MBJEE9UCK.html";
        WXMediaMessage msg  = new WXMediaMessage();
        msg.title="一切只需十分钟的专注";
        msg.description="TED";
        msg.mediaObject = object;
        Bitmap thumbBit = BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher);
        msg.thumbData = BmpToByteArray(thumbBit,true);
        SendMessageToWX.Req req =  new SendMessageToWX.Req();
        req.message  = msg;
        req.scene = mCheckBox.isChecked()?SendMessageToWX.Req.WXSceneTimeline:SendMessageToWX.Req.WXSceneSession;
        req.transaction =  onlySign("URLvideo");

        Toast.makeText(MainActivity.this,String.valueOf(api.sendReq(req)),Toast.LENGTH_LONG).show();
    }
    public void  btn_share_weburi(View view){
        WXWebpageObject object = new WXWebpageObject();
        object.webpageUrl ="http://open.163.com/ted/";
        WXMediaMessage msg  = new WXMediaMessage();
        msg.title="网易公开课";
        msg.description="TED";
        msg.mediaObject = object;

        Bitmap thumbBit = BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher);
        msg.thumbData = BmpToByteArray(thumbBit,true);
        SendMessageToWX.Req req =  new SendMessageToWX.Req();
        req.message  = msg;
        req.scene = mCheckBox.isChecked()?SendMessageToWX.Req.WXSceneTimeline:SendMessageToWX.Req.WXSceneSession;
        req.transaction =  onlySign("WEBuri");

        Toast.makeText(MainActivity.this,String.valueOf(api.sendReq(req)),Toast.LENGTH_LONG).show();
    }
}

这里代码比较多,但都是差不多的,就创建对象时几个sdk不太一样罢了。这里其实可以将相同代码封装在方法中。更有维护性与可阅读性。

最后,展示下一部分效果吧
技术分享

对于初学者来说或许会有一点问题,比如api.sendReq(req)明明返回true,可是没有调起微信朋友圈,或者分享图片时同样掉不起来,那么这时需要查清楚包名,APPID,应用签名是否一致,缩略图大小不能超过32k。如果再有问题欢迎留言或者推荐看这套视频(李宁微信分享)[http://www.imooc.com/learn/455].

分享到微信好友或朋友圈

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原文地址:http://blog.csdn.net/qq_31609983/article/details/51236882

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