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java - 从相机上传照片时出错

问题描述

我是 android studio 和一般开发的移动应用程序的初学者，但我仍在努力学习。所以我设法构建了我的第一个 webview 应用程序来显示页面和图片。我找到了很多有用的资源来帮助我这样做，但我仍然面临上传从手机相机拍摄的照片的问题（不是从图库）直接上传到服务器。

1-按下浏览按钮后，应用程序会提示我是从相机还是从图库中拍照。（Android 版本 9） 2- 当我从图库上传照片时，该应用程序运行良好，但当我使用相机拍照并立即上传时，它不起作用。尽管照片名称返回到字段路径，但它给了我以下错误消息

-1_net::ERR_ACCESS_DENIED

这是我的 onActivityResult 代码

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
        if (requestCode == FILECHOOSER_RESULTCODE) {
            if (null == this.mUploadMessage) {
                return;
            }
            Uri result = null;
            try {
                if (resultCode != RESULT_OK) {
                    result = null;
                } else {
                    // retrieve from the private variable if the intent is null
                    result = data == null ? mCapturedImageURI : data.getData();
                }
            } catch (Exception e) {
                Toast.makeText(getApplicationContext(), "activity :" + e, Toast.LENGTH_LONG).show();
            }

            mUploadMessage.onReceiveValue(result);
            mUploadMessage = null;
        }

    } 
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

        if (requestCode != FILECHOOSER_RESULTCODE || mFilePathCallback == null) {
            super.onActivityResult(requestCode, resultCode, data);
            return;
        }

        Uri[] results = null;      
        if (resultCode == Activity.RESULT_OK) {
            if (data == null || data.getData() == null) {
                // if there is not data, then we may have taken a photo
                if (mCameraPhotoPath != null) {
                    results = new Uri[]{Uri.parse(mCameraPhotoPath)};
                }
            } else {
                String dataString = data.getDataString();
                if (dataString != null) {
                    results = new Uri[]{Uri.parse(dataString)};
                }
            }
        }

        mFilePathCallback.onReceiveValue(results);
        mFilePathCallback = null;

    } // end of code for Lollipop only
}

--------这里是openFileChooser ----------------

 public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
                mUploadMessage = uploadMsg;
                mWebView.getSettings().setJavaScriptEnabled(true);
                mWebView.getSettings().setAllowFileAccess(true);
                mWebView.getSettings().setPluginState(WebSettings.PluginState.ON);
                mWebView.getSettings().setDomStorageEnabled(true);
                mWebView.getSettings().setLoadsImagesAutomatically(true);

                try {
                    File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "DirectoryNameHere");

                    if (!imageStorageDir.exists()) {
                        imageStorageDir.mkdirs();
                    }

                    File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");

                    mCapturedImageURI = Uri.fromFile(file); // save to the private variable

                    final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                    captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
                    // captureIntent.putExtra(MediaStore.EXTRA_SCREEN_ORIENTATION, ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

                    Intent i = new Intent(Intent.ACTION_GET_CONTENT);
                    i.addCategory(Intent.CATEGORY_OPENABLE);
                    i.setType("image/*");

                    Intent chooserIntent = Intent.createChooser(i, getString(R.string.image_chooser));
                    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Parcelable[]{captureIntent});

                    startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
                } catch (Exception e) {
                    Toast.makeText(getBaseContext(), "Camera Exception:" + e, Toast.LENGTH_LONG).show();
                }

            }
      
I really appreciate your help

标签： javaandroidandroid-studiofile-uploadwebview

解决方案

仅仅放入清单还不够，您必须启动请求权限，

if (ContextCompat.checkSelfPermission(this, 
    Manifest.permission.REQUESTED_PERMISSION) ==PackageManager.PERMISSION_GRANTED) 
{
    // You can use the API that requires the permission
    openFileChooser();
}else{
    requestPermissions(this,new String[] { 
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE,
        Manifest.permission.CAMERA},100
        );
}
@Override
public void onRequestPermissionsResults(
    int requestCode, String[] permissions,int[] grantResults) 
    {
    if (requestCode==100 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
        openFileChooser();
    }else{
        //not grant show toas or dialog
    }
}

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