Android 调用H5界面（交互）

public class UserInfoActivity extends AppCompatActivity implements WebView.OnClickListener{

    private WebView webView;

    private ValueCallback<Uri> mUploadMessage;// 表单的数据信息
    private ValueCallback<Uri[]> mUploadCallbackAboveL;
    private final static int FILECHOOSER_RESULTCODE = 1;// 表单的结果回调
    private Uri imageUri;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_user_info);

        webView = (WebView)findViewById(R.id.wv);
        WebSettings settings = webView.getSettings();
        settings.setJavaScriptEnabled(true);

        webView.setWebChromeClient(new UserInfoActivity.MyWebChromeClient());
        webView.addJavascriptInterface(this, "android");
        Map<String,String> extraHeaders = new HashMap<>();
        extraHeaders.put("Authorization", GlobalValue.Authorization);
        webView.loadUrl("http://47.92.170.10/puth/usermsg/userinfoedit",extraHeaders);

        CacheActivity.addActivity(this);

        if(Build.VERSION.SDK_INT >= 21) {
            getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    |View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
            getWindow().setStatusBarColor(Color.TRANSPARENT);
        }
    }

    @Override
    public void onClick(View view) {
    }

    //下面的两个方法是让网页来调的
    //这个注解必须加 因为 兼容问题
    @JavascriptInterface
    public void setClose() {
//        Toast.makeText(this, "关闭页面", Toast.LENGTH_SHORT).show();
        Intent intent = new Intent();
        intent.setClass(this,MainActivity.class);
        startActivity(intent);
        UserInfoActivity.this.finish();
    }
    @JavascriptInterface
    public void reLogin() {
        SharedPreferences sharedPreferences = getSharedPreferences("user", Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString("isLogin", "no");
        editor.commit();
        Intent intent = new Intent();
        intent.setClass(this,LoginActivity.class);
        startActivity(intent);
        UserInfoActivity.this.finish();
    }

    @JavascriptInterface
    public void setMessage(String info) {
//        try {
//            WebViewUserInfoEntity entity = new Gson().fromJson(info,WebViewUserInfoEntity.class);
//            SharedPreferences sharedPreferences = getSharedPreferences("user", Context.MODE_PRIVATE);
//            SharedPreferences.Editor editor = sharedPreferences.edit();
//            editor.putInt("simulation_status", entity.simulation_status);
//            editor.putInt("hospital_status",entity.hospital_status);
//            editor.putBoolean("userInfo", entity.userinfo);
//            editor.commit();
//        }catch (Exception e){
//            Toast.makeText(this, "format error", Toast.LENGTH_SHORT).show();
//        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
            webView.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    private class MyWebChromeClient extends WebChromeClient {
        //这个重新的方法是为了让js支持alert。不需要的可以去掉
        @Override
        public boolean onJsAlert(WebView view, String url, String message,
                                 JsResult result) {
            return super.onJsAlert(view, url, message, result);
        }

        //设置网页加载的进度条
        @Override
        public void onProgressChanged(WebView view, int newProgress) {
            super.onProgressChanged(view, newProgress);
//            if (newProgress == 100) {
//                mProgressBar.setVisibility(View.GONE);
//            } else {
//                mProgressBar.setVisibility(View.VISIBLE);
//                mProgressBar.setProgress(newProgress);
//            }
        }
        //android>5.0调用这个方法
        @Override
        public boolean onShowFileChooser(WebView webView,
                                         ValueCallback<Uri[]> filePathCallback,
                                         FileChooserParams fileChooserParams) {
            mUploadCallbackAboveL=filePathCallback;
            take();
            return true;
        }
        public void openFileChooser(ValueCallback<Uri> uploadMsg) {
            mUploadMessage=uploadMsg;
            take();
        }
        public void openFileChooser(ValueCallback<Uri> uploadMsg,String acceptType) {
            mUploadMessage=uploadMsg;
            take();
        }
        public void openFileChooser(ValueCallback<Uri> uploadMsg,String acceptType, String capture) {
            mUploadMessage=uploadMsg;
            take();
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode==FILECHOOSER_RESULTCODE)
        {
            if (null == mUploadMessage && null == mUploadCallbackAboveL) return;
            Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
            if (mUploadCallbackAboveL != null) {
                onActivityResultAboveL(requestCode, resultCode, data);
            }
            else  if (mUploadMessage != null) {
                Log.e("result",result+"");
                if(result==null){
//                   mUploadMessage.onReceiveValue(imageUri);
                    mUploadMessage.onReceiveValue(imageUri);
                    mUploadMessage = null;
                    Log.e("imageUri",imageUri+"");
                }else {
                    mUploadMessage.onReceiveValue(result);
                    mUploadMessage = null;
                }
            }
        }
    }

    @SuppressWarnings("null")
    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) {
        if (requestCode != FILECHOOSER_RESULTCODE
                || mUploadCallbackAboveL == null) {
            return;
        }

        Uri[] results = null;
        if (resultCode == Activity.RESULT_OK) {
            if (data == null) {
                results = new Uri[]{imageUri};
            } else {
                String dataString = data.getDataString();
                ClipData clipData = data.getClipData();

                if (clipData != null) {
                    results = new Uri[clipData.getItemCount()];
                    for (int i = 0; i < clipData.getItemCount(); i++) {
                        ClipData.Item item = clipData.getItemAt(i);
                        results[i] = item.getUri();
                    }
                }

                if (dataString != null)
                    results = new Uri[]{Uri.parse(dataString)};
            }
        }
        if(results!=null){
            mUploadCallbackAboveL.onReceiveValue(results);
            mUploadCallbackAboveL = null;
        }else{
            results = new Uri[]{imageUri};
            mUploadCallbackAboveL.onReceiveValue(results);
            mUploadCallbackAboveL = null;
        }

        return;
    }

    private void take(){
        File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
        // Create the storage directory if it does not exist
        if (! imageStorageDir.exists()){
            imageStorageDir.mkdirs();
        }
        File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
        imageUri = Uri.fromFile(file);

        final List<Intent> cameraIntents = new ArrayList<Intent>();
        final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        final PackageManager packageManager = getPackageManager();
        final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
        for(ResolveInfo res : listCam) {
            final String packageName = res.activityInfo.packageName;
            final Intent i = new Intent(captureIntent);
            i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
            i.setPackage(packageName);
            i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
            cameraIntents.add(i);

        }
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("image/*");
        Intent chooserIntent = Intent.createChooser(i,"Image Chooser");
        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
        UserInfoActivity.this.startActivityForResult(chooserIntent,  FILECHOOSER_RESULTCODE);
    }
}