Android(安卓)接入微信分享

一、准备工作

微信开放平台注册账号 -> 微信开放平台

创建应用，按要求填写应用信息（这里注意应用包签名，用debug包签名得到的appid只能debug包使用，release同理）

通过审核后拿到appID：

二、集成

1、build.gradle文件中添加依赖

android{    ...    buildTypes{        debug{            minifyEnabled false            buildConfigField "String", "WECHAT_APP_ID", '"你的微信分享appID"'        }    }}dependencies {    api'com.tencent.mm.opensdk:wechat-sdk-android-with-mta:+'}

AndroidManifext中添加需要的权限

2、通过一个工具类完成注册和分享内容的处理

public class WXShareManager {    private static final String APP_ID = BuildConfig.WECHAT_APP_ID;    private static final String SHARE_IMAGE_PATH = "0";    private static final String SHARE_IMAGE_DATA = "1";    private static WXShareManager manager;    private static Context appcontext;    public IWXAPI api;    public WXShareManager(Context context) {        appcontext = context;        api = WXAPIFactory.createWXAPI(appcontext, APP_ID, true);    }    public static WXShareManager getInstance(Context context) {        if (appcontext == null || !appcontext.equals(context) || manager == null) {            appcontext = context;            manager = new WXShareManager(context);        }        return manager;    }    private class WXShareThread extends Thread {        private Object content;        private String datatype;        private boolean isTimeline; //发送到朋友圈还是微信好友;        public WXShareThread(Object content, String datatype, boolean isTimeline) {            this.content = content;            this.datatype = datatype;            this.isTimeline = isTimeline;        }        @Override        public void run() {            super.run();            if (!hasPreHandleException(content)) {                WXImageObject imgObj = null;                Bitmap thumbBmp = null;                BitmapFactory.Options options = new BitmapFactory.Options();                options.inSampleSize = 4;                switch (datatype) {                    case SHARE_IMAGE_PATH:                        imgObj = new WXImageObject();                        imgObj.setImagePath((String) content);                        thumbBmp = Bitmap.createScaledBitmap(                                BitmapFactory.decodeFile((String) content, options), 150, 150, true);                        break;                    case SHARE_IMAGE_DATA:                        imgObj = new WXImageObject();                        imgObj.imageData = (byte[]) content;                        thumbBmp = Bitmap.createScaledBitmap(BitmapFactory.decodeByteArray(                                (byte[]) content, 0, imgObj.imageData.length), 100, 100, true);                        break;                }                sharePictureToWX(imgObj, thumbBmp, isTimeline);            }        }    }    /**     * 预先检查     *     * @param content     * @return     */    private boolean hasPreHandleException(Object content) {        if (null == content) {//空指针异常，传过来的Object是空            Looper.prepare();            Toast.makeText(appcontext, R.string.wx_err_no_content, Toast.LENGTH_SHORT).show();            Looper.loop();            return true;        }        if (!api.isWXAppInstalled()) {//微信没有安装            Looper.prepare();            Toast.makeText(appcontext, R.string.wx_err_no_install, Toast.LENGTH_SHORT).show();            Looper.loop();            return true;        }        return false;    }    public void sharePictureToWX(Object content, String datatype, boolean isTimeline) {        new WXShareThread(content, datatype, isTimeline).start();    }    /**     * 分享图片 isTimeline 是否发送朋友圈，true为朋友圈，false为朋友圈好友     */    public void sharePictureToWX(WXImageObject mediaObject, Bitmap thumbBmp, boolean isTimeline) {        WXMediaMessage msg = new WXMediaMessage();        if (mediaObject != null) {            msg.mediaObject = mediaObject;        } else {            return;        }        if (thumbBmp != null) {            msg.thumbData = ImageUtils.bmpToByteArray(thumbBmp, true);  // 设置缩略图        }        SendMessageToWX.Req req = new SendMessageToWX.Req();        req.transaction = buildTransaction("imgshareappdata");        req.message = msg;        req.scene = isTimeline ? SendMessageToWX.Req.WXSceneTimeline : SendMessageToWX.Req.WXSceneSession;        api.sendReq(req);    }    private String buildTransaction(final String type) {        return (type == null) ? String.valueOf(System.currentTimeMillis()) : type + System.currentTimeMillis();    }    /**     * 分享链接     */    public void shareUrlToWX(boolean isTimeline, String url, Bitmap thumbBmp, String title, String descroption) {        //初始化一个WXWebpageObject填写url        WXWebpageObject webpageObject = new WXWebpageObject();        webpageObject.webpageUrl = url;        //用WXWebpageObject对象初始化一个WXMediaMessage        WXMediaMessage msg = new WXMediaMessage(webpageObject);        msg.title = title;        msg.description = descroption;        msg.setThumbImage(thumbBmp);        SendMessageToWX.Req req = new SendMessageToWX.Req();        req.transaction = String.valueOf(System.currentTimeMillis());        req.message = msg;        req.scene = isTimeline ? SendMessageToWX.Req.WXSceneTimeline : SendMessageToWX.Req.WXSceneSession;        api.sendReq(req);    }}

public static byte[] bmpToByteArray(Bitmap bmp, boolean needRecycle) {        ByteArrayOutputStream output = new ByteArrayOutputStream();        bmp.compress(Bitmap.CompressFormat.PNG, 100, output);        if (needRecycle) {            recycleBitmap(bmp);        }        byte[] result = output.toByteArray();        try {            output.close();        } catch (Exception var5) {            var5.printStackTrace();        }        return result;}

3、微信回调

public class WXEntryActivity extends AppCompatActivity implements IWXAPIEventHandler {    private static final String TAG = "WXEntryActivity";    private IWXAPI api;    private static final String APP_ID = BuildConfig.WECHAT_APP_ID;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        api = WXAPIFactory.createWXAPI(this, APP_ID, true);        api.handleIntent(getIntent(), this);    }    @Override    protected void onNewIntent(Intent intent) {        super.onNewIntent(intent);        setIntent(intent);        api.handleIntent(intent, this);    }       @Override    public void onReq(BaseReq baseReq) {        Log.v(TAG, "onReq: ");        finish();    }    @Override    public void onResp(BaseResp baseResp) {        switch (baseResp.errCode) {            case BaseResp.ErrCode.ERR_OK:                Toast.makeText(WXEntryActivity.this, R.string.wx_err_ok, Toast.LENGTH_LONG).show();                break;            case BaseResp.ErrCode.ERR_AUTH_DENIED:                Toast.makeText(WXEntryActivity.this, R.string.wx_err_auth_denied, Toast.LENGTH_LONG).show();                break;            case BaseResp.ErrCode.ERR_USER_CANCEL:                Toast.makeText(WXEntryActivity.this, R.string.wx_err_user_cancel, Toast.LENGTH_LONG).show();                break;            default:                Toast.makeText(WXEntryActivity.this, R.string.wx_err_unkown, Toast.LENGTH_LONG).show();                break;        }        finish();    }}

需要注意的是，WXEntryActivity只能这么命名，路径一定要在包名/wxapi 文件夹下！

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