i had an to devlop an app in Android in which i had to select some text and copy text from webview in to my local file.how do to implement it.
give a solution to work it out.
Thanks Ayrina
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
objWebview = (WebView)findViewById(R.id.webView_engine);
//enable javaScript overall
WebSettings objWebsetting =objWebview.getSettings();
objWebsetting.setJavaScriptEnabled(true);
// Enable JavaScript Alerts
objWebview.setWebChromeClient(new WebChromeClient());
// Button btnSelect = (Button)findViewById(R.id.btnCopy);
objWebview.loadUrl("http://www.google.com");
selectAndCopyText(objWebview);
}
void selectAndCopyText(WebView view)
{
try
{
KeyEvent shiftPressEvent = new KeyEvent(0, 0, KeyEvent.ACTION_DOWN,
KeyEvent.KEYCODE_SHIFT_LEFT, 0, 0);
shiftPressEvent.dispatch(view);
}
catch (Exception e)
{
Log.e("dd", "Exception in emulateShiftHeld()", e);
}
}
Related
I have added my Android side code:
I know that I need to use a platform channel to pass data,I am unable to figure out:
import io.flutter.embedding.android.FlutterActivity;
public class MainActivity extends AppCompatActivity {
private Button Btn;
// Intent defaultFlutter=FlutterActivity.createDefaultIntent(activity);
String path;
private Button bt;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Btn = findViewById(R.id.btn);
isStoragePermissionGranted();
Btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
path=takeScreenshot();
// activity.startActivity(defaultFlutter);
}
});
//write flutter xode here
//FlutterActivity.createDefaultIntent(this);
}
private String takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
File imageFile = new File(mPath);
Log.d("path",mPath);
FileOutputStream outputStream = new FileOutputStream(imageFile);
int quality = 100;
bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
outputStream.flush();
outputStream.close();
return mPath;
///openScreenshot(imageFile);
} catch (Throwable e) {
// Several error may come out with file handling or DOM
e.printStackTrace();
return "Error";
}
}
public boolean isStoragePermissionGranted() {
String TAG = "Storage Permission";
if (Build.VERSION.SDK_INT >= 23) {
if (this.checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
Log.v(TAG, "Permission is granted");
return true;
} else {
Log.v(TAG, "Permission is revoked");
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
return false;
}
}
else { //permission is automatically granted on sdk<23 upon installation
Log.v(TAG,"Permission is granted");
return true;
}
}
}
I will receive a file from the android side, upon receiving I need to display it in a flutter. I also need to use cached engine for transferring data as normally it would cause a delay
You can use the cached engine, this will help me cover up for the delay.
Then you can add a invoke method onpressed that you can send method name and the data you want to pass.
On flutter side,you can create a platform and invoke method through which you can receive requirements and further process it,
I would like to know if there is a way to show only a reign of area of the camera that shown on a SurfaceView.
I've got an image like that (microscopic image)
and I want to show image like that(Cropped and Stretched):
This is a part of my code(it is a basic code that show the camera on SurfaceView using SurfaceHolder):
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.activity_sample_testing);
overridePendingTransition(0, 0);
cameraView = (SurfaceView)findViewById(R.id.CameraView);
holder = cameraView.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
try {
camera = Camera.open();
parameters = camera.getParameters();
parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
parameters.setFocusMode(Parameters.FOCUS_MODE_AUTO);
//parameters.setZoom(10);
camera.setParameters(parameters);
camera.setPreviewDisplay(holder);
camera.setDisplayOrientation(90);
camera.startPreview();
camera.autoFocus(autoFocusCallback);
recorder = new MediaRecorder();
final Timer myTimer = new Timer();
myTimer.schedule(new TimerTask() {
#Override
public void run() {
StartTest(0);
myTimer.cancel();
myTimer.purge();
}
},10000, 10);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void initRecorder() {
camera.unlock();
recorder.setCamera(camera);
recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
CamcorderProfile cpHigh = CamcorderProfile
.get(CamcorderProfile.QUALITY_HIGH);
recorder.setProfile(cpHigh);
recorder.setMaxDuration(50000); // 50 seconds
recorder.setMaxFileSize(300000000); // Approximately 5 megabytes
recorder.setOutputFile(VIDEO_PATH);
}
private void prepareRecorder() {
recorder.setPreviewDisplay(holder.getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
finish();
} catch (IOException e) {
e.printStackTrace();
finish();
}
}
Thanks for any help!
It is possible to show progress dialog when loading the .obj model. I tried to call the ProgressDialog in RajawaliVuforiaExampleRenderer.java but it said "Can't create handler inside thread that has not called Looper.prepare()"
I have pasted part of the code here:
protected void initScene() {
mLight = new DirectionalLight(.1f, 0, -1.0f);
mLight.setColor(1.0f, 0, 0);
mLight.setPower(1);
getCurrentScene().addLight(mLight);
LoaderOBJ objParser = new LoaderOBJ(mContext.getResources(),
mTextureManager, R.raw.wall_obj);
try {
// Load model
objParser.parse();
wall = objParser.getParsedObject();
addChild(wall);
} catch (Exception e) {
e.printStackTrace();
}
}
EDITED:
I have read the comment from Abhishek Agarwal and updated the code for Renderer part, now i having problem on calling the ProgressDialog when loading the model, here is my code for the UI thread.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setScreenOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
// receive file path
String filePath = this.getIntent().getStringExtra("FullFilePath");
Log.i(filePath, "FullFilePath:" + filePath);
waitDialog = ProgressDialog.show(this, "", "Loading", true);
waitDialog.show();
new ModelLoader().execute();
}
#Override
protected void setupTracker() {
int result = initTracker(TRACKER_TYPE_MARKER);
if (result == 1) {
result = initTracker(TRACKER_TYPE_IMAGE);
if (result == 1) {
super.setupTracker();
} else {RajLog.e("Couldn't initialize image tracker.");
}
} else {
RajLog.e("Couldn't initialize marker tracker.");
}}
protected void initApplicationAR() {
super.initApplicationAR();
createImageMarker("marker.xml");
}
protected void initRajawali() {
super.initRajawali();
mRenderer = new ModelRenderer(this);
mRenderer.setSurfaceView(mSurfaceView);
super.setRenderer(mRenderer);
mUILayout = this;
mUILayout.setContentView(mLayout, new LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
}
private class ModelLoader extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) {
startVuforia();
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
waitDialog.dismiss();
}
}
Progress Dialog can be shown on the UIThread. So show progress dialog on the main thread not under GLThread
You can use Handler to be on threadUI :
`private Handler mHandler = new Handler();
...
mHandler.post(new Runnable() {
#Override
public void run() {
view_progressBar.setProgress(val);
}
});`
I am creating a Portlet project using Vaadin and Liferay6.0.
I need to upload a csv file from ui and read the file.
My class is as fllows:
#SuppressWarnings("serial")
public void init() {
Window window = new Window("Vaadin Portlet Application");
setMainWindow(window);
window.addComponent(new Label("Hello Vaadin user!"));
window.addComponent(new Label("We are here"));
final TextField tf = new TextField("Device Name:");
// Create the Upload component.
final Upload upload =
new Upload("Upload the file here", null);
// Use a custom button caption instead of plain "Upload".
upload.setButtonCaption("Upload Now");
try{
System.out.println("I am here only");
final DeviceManager dManager = new DeviceManager();
final DeviceSoap[] devices = dManager.getAll();
//getDeviceByName("207.20.47.137");
for (DeviceSoap deviceSoap : devices) {
window.addComponent(new Label("Device Name! "+deviceSoap.getName()));
}
window.addComponent(tf);
Button submitBttn = new Button("Add Device");
Button updateBttn = new Button("Update Device");
window.addComponent(submitBttn);
// Handle button clicks
submitBttn.addListener(new Button.ClickListener() {
#Override
public void buttonClick(ClickEvent event) {
// If the field value is bad, set its error.
// (Allow only alphanumeric characters.)
DeviceSoap d = new DeviceSoap();
d.setName(tf.getValue().toString());
try {
dManager.createDevice(d);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
updateBttn.addListener(new Button.ClickListener() {
#Override
public void buttonClick(ClickEvent event) {
// If the field value is bad, set its error.
// (Allow only alphanumeric characters.)
DeviceSoap d = devices[1];
d.setName(tf.getValue().toString());
try {
dManager.createDevice(d);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
upload.addListener((Upload.SucceededListener) this);
upload.addListener((Upload.FailedListener) this);
window.addComponent(upload);
}catch(Exception e){
e.printStackTrace();
}
}
Thanks
Hiamsnhu
I'm doing the same thing, and in reading your code, I see that you forgot making:
window.addComponent(updateBttn);
Hope this works.
I try to use get result from a api called j-calais, and then out put the result on a web page, i write all the code in client, but it cant compile right, dont know why??? please help. the source code like below:
there is no obvious error arise, but it cant be compile successfully..... thanks a lot:
public void onModuleLoad() {
// Create table for stock data.
stocksFlexTable.setText(0, 0, "Type");
stocksFlexTable.setText(0, 1, "Name");
// Assemble Add Stock panel.
addPanel.add(newSymbolTextBox);
addPanel.add(addStockButton);
// Assemble Main panel.
mainPanel.add(stocksFlexTable);
mainPanel.add(addPanel);
mainPanel.add(lastUpdatedLabel);
// Associate the Main panel with the HTML host page.
RootPanel.get("stockList").add(mainPanel);
// Move cursor focus to the input box.
newSymbolTextBox.setFocus(true);
// Listen for mouse events on the Add button.
addStockButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
try {
addStock();
} catch (Exception e) {
e.printStackTrace();
}
}
});
// Listen for keyboard events in the input box.
newSymbolTextBox.addKeyPressHandler(new KeyPressHandler() {
public void onKeyPress(KeyPressEvent event) {
if (event.getCharCode() == KeyCodes.KEY_ENTER) {
try {
addStock();
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
}
private void addStock() throws Exception {
final String url_s = newSymbolTextBox.getText().toUpperCase().trim();
newSymbolTextBox.setFocus(true);
newSymbolTextBox.setText("");
int row = stocksFlexTable.getRowCount();
CalaisClient client = new CalaisRestClient("ysw5rx69jkvdnzqf6sgjduqj");
System.out.print("read success...\n");
URL url = new URL(url_s);
CalaisResponse response = client.analyze(url);
for (CalaisObject entity : response.getEntities()) {
System.out.println(entity.getField("_type") + ":"
+ entity.getField("name"));
stocks.add(entity.getField("_type"));
stocksFlexTable.setText(row, 0, entity.getField("_type"));
stocksFlexTable.setText(row, 1, entity.getField("name"));
}
for (CalaisObject topic : response.getTopics()) {
System.out.println(topic.getField("categoryName"));
}
}
}
GWT only handles unchecked exceptions so you can throw Runtime Exceptions
or write your own Exception that extends from Runtime Exception then it will not cause any compile time problem
void f() throws NullPointerException // will not cause any problem because it is Runtime exception so unchecked
void f() throws IllegalAccessException // it is checked exception so there will be problem at compile time