我得到了一个不为空的 takePictureIntent，但它不会将它发送到 webview。有人有想法吗？它适用于旧版本 9 及更低版本，不适用于 android 版本 10 和 11。
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
Log.d("test", "Test1");
} catch (IOException ex) {
// Error occurred while creating the File
Toast.makeText(getApplicationContext(), "\"Unable to create Image File", Toast.LENGTH_SHORT).show();
}
// Continue only if the File was successfully created
if (photoFile != null) {
mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photoFile));
} else {
takePictureIntent = null;
}
}
我得到了我的日志，所以我知道它不是空的，它应该创建了 photoFile：
D/test: Test1
如果我选择图像，应用程序就可以工作：
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType("image/*");
Intent[] intentArray;
if (takePictureIntent != null) {
intentArray = new Intent[]{takePictureIntent};
} else {
intentArray = new Intent[0];
}
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);
return true;
编辑 1：
我尝试记录绝对路径，如果甚至有图像和帽子也能正常工作。为什么不把图片放到webview中？
// Continue only if the File was successfully created
//if (photoFile != null)
//try{
mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photoFile));
Log.d("test", photoFile.getAbsolutePath());
// } catch (Exception e) {
//takePictureIntent = null;
//Toast.makeText(getApplicationContext(), "\"Something went wrong", Toast.LENGTH_SHORT).show();
// }
D/test: /storage/emulated/0/Pictures/JPEG_20210407140742_2243265910829120097.jpg
编辑 2
现在我还尝试了以下内容：
package ch.actum.DCD;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Parcelable;
import android.provider.MediaStore;
import android.util.Log;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceError;
import android.webkit.WebResourceRequest;
import android.webkit.WebView;
import android.widget.ImageView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
public class SecondActivity extends AppCompatActivity {
public WebView webView;
ImageView iv;
ProgressDialog progressDialog;
private ValueCallback<Uri> mUploadMessage;
private Uri mCapturedImageURI = null;
private ValueCallback<Uri[]> mFilePathCallback;
private String mCameraPhotoPath;
private static final int INPUT_FILE_REQUEST_CODE = 1;
private static final int FILECHOOSER_RESULTCODE = 1;
Timer t = new Timer();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
setContentView(R.layout.mainview);
CheckInternetState();
TimerTask tt = new TimerTask() {
@Override
public void run() {
switchView();
}
};
t.scheduleAtFixedRate(tt, 1, 1000);
}
public void switchView() {
Intent obj = new Intent(SecondActivity.this, noconnectionActivity.class);
if (!DetectConnection.checkInternetConnection(this)) {
t.cancel();
startActivity(obj);
webView = null;
}
}
public void CheckInternetState() {
if (!DetectConnection.checkInternetConnection(this)) {
setContentView(R.layout.activity_no_connection);
} else {
// Show Spinner when app is loading
progressDialog = new ProgressDialog(this);
progressDialog.setCancelable(true);
progressDialog.setMessage("Loading...");
progressDialog.show();
// Start WebView
StartWebView();
}
}
public void StartWebView() {
// WebView to View DCD Website
webView = (WebView) findViewById(R.id.webView);
webView.getSettings().setJavaScriptEnabled(true);
webView.clearCache(true);
webView.loadUrl("http://www.doccardiacdevice.com/scan_Mobile"); // website on app launch
webView.setWebViewClient(new xWebViewClient()); //we would be overriding WebViewClient() with custom methods
webView.setWebChromeClient(new chromeView()); //we would be overriding WebChromeClient() with custom methods.
}
class xWebViewClient extends android.webkit.WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
progressDialog.show(); //showing the progress bar once the page has started loading
}
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progressDialog.dismiss(); // hide the progress bar once the page has loaded
}
@Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
super.onReceivedError(view, request, error);
webView.loadData("", "text/html", "utf-8"); // replace the default error page with plan content
progressDialog.dismiss(); // hide the progress bar on error in loading
Toast.makeText(getApplicationContext(), "Internet issue", Toast.LENGTH_SHORT).show();
setContentView(R.layout.activity_no_connection);
}
}
public class chromeView extends WebChromeClient {
// For Android 5.0+
public boolean onShowFileChooser(WebView view, ValueCallback<Uri[]> filePath, WebChromeClient.FileChooserParams fileChooserParams) {
// Double check that we don't have any existing callbacks
if (mFilePathCallback != null) {
mFilePathCallback.onReceiveValue(null);
}
mFilePathCallback = filePath;
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
// try {
//photoFile = createImageFile();
File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
path.mkdirs();
photoFile = new File(path, "TEMP.jpg");
takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
// Log.d("test", "Test1");
/* } catch (IOException ex) {
// Error occurred while creating the File
Toast.makeText(getApplicationContext(), "\"Unable to create Image File", Toast.LENGTH_SHORT).show();
}*/
// Continue only if the File was successfully created
if (photoFile != null) {
mCameraPhotoPath = "file:" + photoFile.getAbsolutePath();
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
} else {
takePictureIntent = null;
}
}
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType("image/*");
Intent[] intentArray;
if (takePictureIntent != null) {
intentArray = new Intent[]{takePictureIntent};
} else {
intentArray = new Intent[0];
}
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);
return true;
}
// openFileChooser for Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
Log.d("test", "Test2");
mUploadMessage = uploadMsg;
try {
// Create AndroidExampleFolder at sdcard
File imageStorageDir = new File(
Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES)
, "AndroidExampleFolder");
if (!imageStorageDir.exists()) {
// Create AndroidExampleFolder at sdcard
imageStorageDir.mkdirs();
}
// Create camera captured image file path and name
File file = new File(
imageStorageDir + File.separator + "IMG_"
+ String.valueOf(System.currentTimeMillis())
+ ".jpg");
mCapturedImageURI = Uri.fromFile(file);
// Camera capture image intent
final Intent captureIntent = new Intent(
android.provider.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/*");
// Create file chooser intent
Intent chooserIntent = Intent.createChooser(i, "Image Chooser");
// Set camera intent to file chooser
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS
, new Parcelable[]{captureIntent});
// On select image call onActivityResult method of activity
startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
} catch (Exception e) {
Log.d("test", e.getMessage());
}
}
// 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);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
if (requestCode != INPUT_FILE_REQUEST_CODE || mFilePathCallback == null) {
super.onActivityResult(requestCode, resultCode, data);
return;
}
Uri[] results = null;
// Check that the response is a good one
if (resultCode == Activity.RESULT_OK) {
if (data == null || data.getDataString() == null) {
// If there is not data, then we may have taken a photo
if (mCameraPhotoPath != null) {
results = new Uri[]{Uri.parse(mCameraPhotoPath)};
Log.d("T1", mCameraPhotoPath);
Log.d("T3", results.toString());
}
} else {
String dataString = data.getDataString();
if (dataString != null) {
results = new Uri[]{Uri.parse(dataString)};
Log.d("T2", results.toString());
}
}
}
mFilePathCallback.onReceiveValue(results);
//mFilePathCallback = null;
} else if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
if (requestCode != FILECHOOSER_RESULTCODE || mUploadMessage == null) {
super.onActivityResult(requestCode, resultCode, data);
return;
}
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;
}
}
return;
}
@Override
public void onBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
} else {
finish();
}
}
private File createImageFile() throws IOException {
try {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
File imageFile = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
return imageFile;
} catch (Exception e) {
Log.d("test", e.getMessage());
return null;
}
}
public static class DetectConnection {
public static boolean checkInternetConnection(Context context) {
ConnectivityManager con_manager = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
return (con_manager.getActiveNetworkInfo() != null
&& con_manager.getActiveNetworkInfo().isAvailable()
&& con_manager.getActiveNetworkInfo().isConnected());
}
}
}
编辑 3
或者有其他方法可以将图片上传到 webview 吗？