Android三方库jsbridge和HTML交互

1.这个三方库用例也很多,使用方式也很简单,先看一下git网址
git传送门:https://github.com/lzyzsd/JsBridge
2.使用方式,直接依赖

compile 'com.github.lzyzsd:jsbridge:1.0.4'

3.直接在自己的webview中写吧,我先把代码放过来

  private void initView() {
        webView = (BridgeWebView) findViewById(R.id.webview);
        back = (LinearLayout) findViewById(R.id.back);
        title = (TextView) findViewById(R.id.title);
        rightBtn_click = (RelativeLayout) findViewById(R.id.rightBtn_click);
        rightBtn = (ImageView) findViewById(R.id.rightBtn);
        rightBtn_click.setVisibility(View.VISIBLE);
        rightBtn.setImageResource(R.mipmap.share);

        //返回
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                WebViewActivity.this.setResult(RESULT_OK);
                if (webView.canGoBack()) {
                    webView.goBack();
                } else {
                    finish();
                }
            }
        });

        //分享
        rightBtn_click.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (!TextUtils.isEmpty(shareurl)) {
                    //分享标题
                    sharename = title.getText().toString();
                    if (TextUtils.isEmpty(sharename)) {
                        sharename = getResources().getString(R.string.app_name);
                    }

                    ShareDialog shareDialog = new ShareDialog(WebViewActivity.this);
                    shareDialog.share(shareurl, sharename, sharesrc, sharedes, null, true);
                    shareDialog.show();

                } else {
                    ToastUtils.showToast(WebViewActivity.this, getString(R.string.data_err));
                }
            }
        });
        progressBar = new ProgressBar(context, null, android.R.attr.progressBarStyleHorizontal);
    }


    private void initEvent() {

        WebSettings websettings = webView.getSettings();
        websettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
        websettings.setLoadsImagesAutomatically(true);
        websettings.setJavaScriptEnabled(true);
        websettings.setUseWideViewPort(true);
        websettings.setSupportZoom(true);
        websettings.setSupportMultipleWindows(true);
        websettings.setCacheMode(WebSettings.LOAD_NO_CACHE);
        websettings.setBuiltInZoomControls(true);
        websettings.setSupportZoom(true);
        websettings.setJavaScriptCanOpenWindowsAutomatically(true);
        websettings.setAppCacheEnabled(true);

        webView.setDefaultHandler(new DefaultHandler());
        webView.setWebViewClient(new MyWebViewClient(webView));
        webView.setWebChromeClient(new WebChromeClient() {

            @Override
            public void onProgressChanged(WebView view, int newProgress) {
                if (newProgress == 100) {
                    progressBar.setVisibility(View.GONE);
                } else {
                    if (progressBar.getVisibility() != View.VISIBLE) {
                        progressBar.setVisibility(View.VISIBLE);
                    }
                    progressBar.setProgress(newProgress);
                }
                super.onProgressChanged(view, newProgress);

            }

            @SuppressWarnings("unused")
            public void openFileChooser(ValueCallback uploadMsg, String AcceptType, String capture) {
                this.openFileChooser(uploadMsg);
            }

            @SuppressWarnings("unused")
            public void openFileChooser(ValueCallback uploadMsg, String AcceptType) {
                this.openFileChooser(uploadMsg);
            }

            public void openFileChooser(ValueCallback uploadMsg) {
                mUploadMessage = uploadMsg;
                initPermission();
            }

            @Override
            public boolean onShowFileChooser(WebView webView, ValueCallback filePathCallback, FileChooserParams fileChooserParams) {
                mUploadMessageArray = filePathCallback;
                initPermission();
                return true;
            }
        });

        webView.loadUrl(url);

        webView.registerHandler("save", new BridgeHandler() {
            @Override
            public void handler(String data, CallBackFunction function) {
                Log.e(TAG, "handler = ImagesFromWeb, data from web = " + data);
                if (!TextUtils.isEmpty(data)) {
                    if (data.endsWith(".png") || data.endsWith(".jpg") || data.endsWith("jpeg")) {
                        DownLoadManager.downLoadImage(context, data);
                    } else {
                        ToastUtils.showToast(WebViewActivity.this, getResources().getString(R.string.okgofail));
                    }

                }
                function.onCallBack("ImagesFromWeb exe, response data 中文 from Java");

            }
        });

        webView.registerHandler("goLogin", new BridgeHandler() {
            @Override
            public void handler(String data, CallBackFunction function) {
                Log.e(TAG, "handler = ImagesFromWeb, data from web = " + data);
                if (!TextUtils.isEmpty(data)) {
                    CommonUtils.toLogin(WebViewActivity.this);
                }
                function.onCallBack("ImagesFromWeb exe, response data 中文 from Java");

            }
        });


        webView.registerHandler("toBookDetail", new BridgeHandler() {
            @Override
            public void handler(String data, CallBackFunction function) {
                Log.e(TAG, "handler = ImagesFromWeb, data from web = " + data);
                if (!TextUtils.isEmpty(data)) {
                    WebViewBean webViewBean = new Gson().fromJson(data, new TypeToken() {
                    }.getType());
                    if (!TextUtils.isEmpty(webViewBean.getBookId())) {
                        Intent intent = new Intent(WebViewActivity.this, BookDetailActivity.class);
                        intent.putExtra(SPUtils.K_BOOKID, webViewBean.getBookId());
                        intent.putExtra(SPUtils.K_TITLE, "");
                        startActivity(intent);
                    } else {
                        showToast(getResources().getString(R.string.okgofail));
                    }
                }
                function.onCallBack("ImagesFromWeb exe, response data 中文 from Java");

            }
        });

    }

    private class MyWebViewClient extends BridgeWebViewClient {


        public MyWebViewClient(BridgeWebView webView) {
            super(webView);
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            return super.shouldOverrideUrlLoading(view, url);
        }

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);

            //获取HTML的title
            String titles = view.getTitle();
            if (!TextUtils.isEmpty(titles)) {
                title.setText(titles);
                sharename = titles;
            }
            if (TextUtils.isEmpty(sharedes)) {
                sharedes = getResources().getString(R.string.app_name);
            }
            //加载结束后去掉加载框
            dismissLoading();
            if (!WebViewActivity.this.isDestroyed() || !WebViewActivity.this.isFinishing()) {
                webView.callHandler("checkAPP", "android", new CallBackFunction() {
                    @Override
                    public void onCallBack(String data) {
                        Log.i(TAG, "回传结果:" + data);
                    }
                });

            }
        }
    }


    /**
     * Back键控制网页后退
     *
     * @param
     * @param
     */
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KEYCODE_BACK) && webView.canGoBack()) {
            webView.goBack();
            return true;
        }
        WebViewActivity.this.setResult(RESULT_OK);
        return super.onKeyDown(keyCode, event);
    }

    /**
     * 在 Activity 销毁( WebView )的时候,先让 WebView 加载null内容,然后移除 WebView,再销毁 WebView,最后置空。
     *
     * @param
     * @param
     */
    @Override
    protected void onDestroy() {
        if (webView != null) {
            webView.loadDataWithBaseURL(null, "", "text/html", "utf-8", null);
            webView.clearHistory();

            ((ViewGroup) webView.getParent()).removeView(webView);
            webView.destroy();
            webView = null;
        }
        super.onDestroy();


    }


    private void initPermission() {
        // 申请权限。
        PermissionUtils.permission(Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE).callBack(new PermissionUtils.PermissionCallBack() {
            @Override
            public void onGranted(PermissionUtils permissionUtils) {
                PictureSelector.create(WebViewActivity.this)
                        .openGallery(PictureMimeType.ofImage())
                        .maxSelectNum(Integer.MAX_VALUE)// 最大图片选择数量 int
                        .isCamera(true)// 是否显示拍照按钮
                        .isZoomAnim(true)// 图片列表点击 缩放效果 默认true
//                                .enableCrop(true)// 是否裁剪
                        .compress(true)// 是否压缩
                        .synOrAsy(true)//同步true或异步false 压缩 默认同步
//                                .withAspectRatio(3, 2)// 裁剪比例 如16:9 3:2 3:4 1:1 可自定义
                        .glideOverride(160, 160)// glide 加载宽高,越小图片列表越流畅,但会影响列表图片浏览的清晰度
                        .hideBottomControls(true)// 是否显示uCrop工具栏,默认不显示
                        .isGif(false)// 是否显示gif图片
//                                .freeStyleCropEnabled(true)// 裁剪框是否可拖拽
//                                .circleDimmedLayer(true)// 是否圆形裁剪
//                                .showCropFrame(false)// 是否显示裁剪矩形边框 圆形裁剪时建议设为false
//                                .showCropGrid(true)// 是否显示裁剪矩形网格 圆形裁剪时建议设为false
//                                .selectionMedia(selectList)// 是否传入已选图片
                        .forResult(PictureConfig.CHOOSE_REQUEST);
            }

            @Override
            public void onDenied(PermissionUtils permissionUtils) {

                ToastTintUtils.error("请打开您的相机和存储权限");
            }
        }).request();

    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        switch (requestCode) {
            case PictureConfig.CHOOSE_REQUEST:
                // 图片选择结果回调
                selectList = PictureSelector.obtainMultipleResult(data);
                // 例如 LocalMedia 里面返回三种path
                // 1.media.getPath(); 为原图path
                // 2.media.getCutPath();为裁剪后path,需判断media.isCut();是否为true
                // 3.media.getCompressPath();为压缩后path,需判断media.isCompressed();是否为true
                // 如果裁剪并压缩了,已取压缩路径为准,因为是先裁剪后压缩的
                List list = new ArrayList<>();
                for (LocalMedia media : selectList) {
                    Log.i("图片-----》", media.getPath());
                    iconPath = media.getPath();
                    list.add(Uri.fromFile(new File(iconPath)));
                }
                if (list != null && list.size() > 0) {
                    if (mUploadMessageArray != null) {
//                            Uri[] uris = new Uri[]{Uri.fromFile(new File(iconPath))};
                        Uri[] uris = new Uri[list.size()];
                        for (int i = 0; i < list.size(); i++) {
                            uris[i] = list.get(i);
                        }
                        Logger.e("ttt" + uris.toString());
                        mUploadMessageArray.onReceiveValue(uris);
                        mUploadMessageArray = null;

                    } else if (mUploadMessage != null) {
                        mUploadMessage.onReceiveValue(Uri.fromFile(new File(iconPath)));
                        mUploadMessage = null;
                    } else {
                        Toast.makeText(context, "获取图片失败,请稍后重试", Toast.LENGTH_LONG).show();
                    }
                } else {
                    cancelFilePathCallback();
                }
                break;
        }
    }

    /**
     * 取消mFilePathCallback回调
     */
    private void cancelFilePathCallback() {
        if (mUploadMessage != null) {
            mUploadMessage.onReceiveValue(null);
            mUploadMessage = null;
        } else if (mUploadMessageArray != null) {
            mUploadMessageArray.onReceiveValue(null);
            mUploadMessageArray = null;
        }
    }

4.这份代码是基本的生命webview在布局中要写的

  

这个代码有选择相册的功能,还有写的句柄,来回调用用的,先说访问相册,这个跟iOS没法比,我们要自己写调起相册的功能,使用的是一个三方库,选择照片后回调,这里说一下,避免选择后不能再次选择问题,所以有了一个取消mFilePathCallback回调
其次句柄:
HTML调用我的方法,首先我注册一个方法,等他触发

        webView.registerHandler("save", new BridgeHandler() {
            @Override
            public void handler(String data, CallBackFunction function) {
                Log.e(TAG, "handler = ImagesFromWeb, data from web = " + data);
                if (!TextUtils.isEmpty(data)) {
                    if (data.endsWith(".png") || data.endsWith(".jpg") || data.endsWith("jpeg")) {
                        DownLoadManager.downLoadImage(context, data);
                    } else {
                        ToastUtils.showToast(WebViewActivity.this, getResources().getString(R.string.okgofail));
                    }

                }
                function.onCallBack("ImagesFromWeb exe, response data 中文 from Java");

            }
        });

然后是HTML注册方法,APP调用

       webView.callHandler("checkAPP", "android", new CallBackFunction() {
                    @Override
                    public void onCallBack(String data) {
                        Log.i(TAG, "回传结果:" + data);
                    }
                });

基本用法就这样,记得访问相册的时候判断一下权限

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