上传时，会弹出一个包含文件图标和相机图标的自定义意图。文件图标用于文件上传，相机图标用于从相机捕获后的图像上传..文件上传工作正常..但相机动作不行工作..当我点击相机图标时，它什么也没做..如果发生任何错误，我还检查了 logcat..我没有看到任何错误..
public class QuestionUploaderActivity extends AppCompatActivity {
String Sub_Question_url;
public static final int REQUEST_CODE_LOLIPOP = 1;
private final static int RESULT_CODE_ICE_CREAM = 2;
private WebView webView;
private ValueCallback<Uri[]> mFilePathCallback;
private String mCameraPhotoPath;
private ValueCallback<Uri> mUploadMessage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_question_uploader);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
Sub_Question_url = getIntent().getStringExtra("Sub_Question_url");
webView = (WebView) findViewById(R.id.webView);
setUpWebViewDefaults(webView);
webView.loadUrl(Sub_Question_url);
webView.setWebChromeClient(new WebChromeClient() {
private String TAG;
// For Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
startActivityForResult(Intent.createChooser(i, "File Chooser"),
RESULT_CODE_ICE_CREAM);
}
// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
startActivityForResult(Intent.createChooser(i, "File Browser"),
RESULT_CODE_ICE_CREAM);
}
//For Android 4.1
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
startActivityForResult(Intent.createChooser(i, "File Chooser"),
RESULT_CODE_ICE_CREAM);
}
//For Android5.0+
public boolean onShowFileChooser(
WebView webView, ValueCallback<Uri[]> filePathCallback,
FileChooserParams fileChooserParams) {
if (mFilePathCallback != null) {
mFilePathCallback.onReceiveValue(null);
}
mFilePathCallback = filePathCallback;
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getApplicationContext().getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
} catch (IOException ex) {
// Error occurred while creating the File
Log.e(TAG, "Unable to create Image File", ex);
}
// 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, REQUEST_CODE_LOLIPOP);
return true;
}
});
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").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;
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private void setUpWebViewDefaults(WebView webView) {
WebSettings settings = webView.getSettings();
// Enable Javascript
settings.setJavaScriptEnabled(true);
settings.setDomStorageEnabled(true);
settings.setPluginState(WebSettings.PluginState.ON);
// Use WideViewport and Zoom out if there is no viewport defined
settings.setUseWideViewPort(true);
settings.setLoadWithOverviewMode(true);
// Enable pinch to zoom without the zoom buttons
settings.setBuiltInZoomControls(true);
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
// Hide the zoom controls for HONEYCOMB+
settings.setDisplayZoomControls(false);
}
// Enable remote debugging via chrome://inspect
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
WebView.setWebContentsDebuggingEnabled(true);
}
// We set the WebViewClient to ensure links are consumed by the WebView rather
// than passed to a browser if it can
webView.setWebViewClient(new WebViewClient());
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case RESULT_CODE_ICE_CREAM:
Uri uri = null;
if (data != null) {
uri = data.getData();
}
mUploadMessage.onReceiveValue(uri);
mUploadMessage = null;
break;
case REQUEST_CODE_LOLIPOP:
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)};
}
} else {
String dataString = data.getDataString();
if (dataString != null) {
results = new Uri[]{Uri.parse(dataString)};
}
}
}
mFilePathCallback.onReceiveValue(results);
mFilePathCallback = null;
break;
}
}
}