我正在尝试使用webview上传图像。一切正常，按预期进行，但从相机单击照片时，仅不上传图像。请帮助我找到这个。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
这是我的活动代码
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;
}
}
答案 0 :(得分：1)
您的代码很好，您只需要实用地添加存储和相机许可即可。它会像魅力一样工作。