android - 图像是从画廊上传的，而不是通过 webView 从相机上传的

Question

我正在尝试使用 webview 上传图片。一切都按预期正常工作，但当从相机中单击照片时，只有图像不会上传。请帮我找到这个。我得到了一些答案，但没有帮助或没有回答 like this one is not answered和 this doesn't help me this is directly opening gallery not working for camera this one didn't help me

这是我的 Activity 代码

public class HomeActivity extends Activity {

    private WebView webView;
    private ValueCallback<Uri> mUploadMessage;
    private ValueCallback<Uri[]> mUploadMessages;
    private Uri mCapturedImageURI = null;
    private static final int MY_CAMERA_REQUEST_CODE = 100;
    private static final int FILECHOOSER_RESULTCODE = 1;

    @RequiresApi(api = Build.VERSION_CODES.M)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);

        webView = findViewById(R.id.webView);

        webView.setWebViewClient(new WebViewClient());

        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        webSettings.setDomStorageEnabled(true);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setDomStorageEnabled(true);
        webView.getSettings().setPluginState(WebSettings.PluginState.ON);
        webView.getSettings().setAppCacheEnabled(false);
        webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
        webView.getSettings().setUseWideViewPort(true);
        webView.getSettings().setLoadWithOverviewMode(true);
        webView.getSettings().setBuiltInZoomControls(false);
        webView.getSettings().setSupportZoom(false);
        webView.getSettings().setDefaultZoom(WebSettings.ZoomDensity.FAR);
        webView.getSettings().setDomStorageEnabled(true);
        webView.getSettings().setDatabaseEnabled(true);
        webView.getSettings().setDatabasePath("/data/data/" + webView.getContext().getPackageName() + "/databases/");

        webView.loadUrl("url");

        webView.setWebChromeClient(new WebChromeClient() {

            // For api level bellow 24
            public boolean shouldOverrideUrlLoading(WebView view, String url) {

                if (url.startsWith("http")) {
                    // Return false means, web view will handle the link
                    return false;
                }

                return false;
            }


            // From api level 24
            @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
                /*Toast.makeText(mcontext, "New Method",Toast.LENGTH_SHORT).show();*/

                // Get the tel: url
                String url = request.getUrl().toString();

                if (url.startsWith("http")) {
                    // Return false means, web view will handle the link
                    return false;
                }

                return false;
            }

            // openFileChooser for Android 3.0+

           /* public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
                mUploadMessage = uploadMsg;
                openImageChooser();
            }*/

            // For Lollipop 5.0+ Devices

            public boolean onShowFileChooser(WebView mWebView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
                mUploadMessages = filePathCallback;
                openImageChooser();
                return true;
            }

            // openFileChooser for Android < 3.0

           /* public void openFileChooser(ValueCallback<Uri> uploadMsg) {
                openFileChooser(uploadMsg, "");
            }

            //openFileChooser for other Android versions

            public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
                openFileChooser(uploadMsg, acceptType);
            }*/
        });

    }

    private void openImageChooser() {
        try {

            File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "FolderName");

            if (!imageStorageDir.exists()) {
                imageStorageDir.mkdirs();
            }
            File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
            mCapturedImageURI = Uri.fromFile(file);

            final Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);

            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, new Parcelable[]{captureIntent});

            startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

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

        if (requestCode == FILECHOOSER_RESULTCODE) {

            if (null == this.mUploadMessage && null == this.mUploadMessages) {
                return;
            }

           /* Uri result;
            if (requestCode != RESULT_OK){
                result = null;
            }else {
                result = intent == null ? this.mCapturedImageURI : intent.getData();
            }
            this.mUploadMessage.onReceiveValue(result);
            this.mUploadMessage = null;*/
            if (null != mUploadMessage) {
                handleUploadMessage(requestCode, resultCode, intent);

            } else if (mUploadMessages != null) {
                handleUploadMessages(requestCode, resultCode, intent);
            }
        }
    }

    private void handleUploadMessage(int requestCode, int resultCode, Intent intent) {
        Uri result = null;
        try {
            if (resultCode != RESULT_OK) {
                result = null;
            } else {
                // retrieve from the private variable if the intent is null

                result = intent == null ? mCapturedImageURI : intent.getData();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        mUploadMessage.onReceiveValue(result);
        mUploadMessage = null;
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    private void handleUploadMessages(int requestCode, int resultCode, Intent intent) {
        Uri[] results = null;
        try {
            if (resultCode != RESULT_OK) {
                results = null;
            } else {
                if (intent != null) {
                    String dataString = intent.getDataString();
                    ClipData clipData = intent.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)};
                    }
                } else {
                    results = new Uri[]{mCapturedImageURI};
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        mUploadMessages.onReceiveValue(results);
        mUploadMessages = null;
    }

}

Answer 1

您的代码很好，您只需要务实地添加存储和相机权限。它会像魅力一样工作。