Develop Reference

Android dialog closes on any physical keypress

I have this dialog, with just a textView and no buttons. It displays some info and I need to change info on key press left and right. Unfortunately the dialog closes on any key.
This code in MainActivity invokes the dialog (redundant code omitted)
#Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_MENU) {
if (event.getAction() == KeyEvent.ACTION_UP) {
InfoDialog infoDialog = new InfoDialog();
infoDialog.showDialog(this,currentDateAndTime,chn);
return true;
}
}
return super.dispatchKeyEvent(event);
}
and this is the dialog code
public class InfoDialog {
private int counter = 0;
private Dialog dialog;
public void showDialog(final Activity activity, final String DateTime, final ChannelList.Channel chn){
dialog = new Dialog(activity);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setCancelable(false);
dialog.setContentView(R.layout.info_dialog);
counter = 0;
setDialogText(chn,DateTime,counter);
dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
#Override
public boolean onKey(DialogInterface dialogInterface, int i, KeyEvent keyEvent) {
if (keyEvent.getKeyCode() == KeyEvent.KEYCODE_DPAD_LEFT) {
if (keyEvent.getAction() == KeyEvent.ACTION_UP) {
if (counter>0) counter--;
setDialogText(chn,DateTime,counter);
return true;
}
}
if (keyEvent.getKeyCode() == KeyEvent.KEYCODE_DPAD_RIGHT) {
if (keyEvent.getAction() == KeyEvent.ACTION_UP) {
if (counter<chn.infoText.size()-1) counter++;
setDialogText(chn,DateTime,counter);
return true;
}
}
dialog.dismiss();
return false;
}
});
dialog.show();
}
}
when I press any button, the dialog closes, even if the onKey has been invoked.
Did I miss something? how do I handle keypresses for my dialog only? (other dialogs may use same keys for different operation)

well, inside InfoDialog you are setting DialogInterface.OnKeyListener and on the bottom of onKey method you are calling dialog.dismiss(), try to remove this line... (and also return true for any case)

how to listen key when popup is opened

I am writing an application to animate popup window. It was working great with my code.
I want to close the popup window(i.e to slide-down it), when back button is pressed on device.
But I couldn't listen any one key from device. I used setOnKeyListener of that popup window, I didn't even get log from it.
My Code is given below:
popup_layout = layoutInflater.inflate(R.layout.popup_addchannel, null);
popupWindow = new PopupWindow(popup_layout, LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
subscribeButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Log.d(TAG,
// "Button is clicked for animation.... Visibility is"
// + subscribeButton.getVisibility());
openMenu(view);
}
});
popup_layout.setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
Log.d(TAG, "on key button click called.........");
return false;
}
});
public void openMenu(View view) {
if (!flag) {
popupWindow.setAnimationStyle(R.style.PopupWindowAnimation);
popupWindow.showAtLocation(view.findViewById(R.id.button1),
Gravity.CENTER, 0, 0);
popupWindow.setFocusable(true);
popupWindow.update();
flag = true;
} else {
popupWindow.dismiss();
popupWindow.setFocusable(false);
flag = false;
}
}
What is the problem behind this?
Shall i achieve my requirement?
Please, Guide me.
Thank you in Advance!

try this....
final PopupWindow popupWindow = new PopupWindow(popupView,
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,true);
...
popupWindow.getContentView().setFocusableInTouchMode(true);
popupMenu.getContentView().setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_MENU &&
event.getRepeatCount() == 0 &&
event.getAction() == KeyEvent.ACTION_DOWN) {
// ... payload action here. e.g. popupMenu.dismiss();
return true;
}
return false;
}
});

The dialog has a property of cancelling the dialog on back press.
dialog.setCancelable(true);
EDIT: Check Qberticus answer on this link: Android popup window dismissal
and you can also see: Issue dismissing popup window

Yes you can use this
dialog_obj.setCancelable(true);

You should override the onKeyPressed() method of your activity as below.
#Override
public void onBackPressed() {
super.onBackPressed();
//your code to close the popup window.
popupWindow.setAnimationStyle(R.style.PopupWindowAnimation);
popupWindow.showAtLocation(view.findViewById(R.id.button1),
Gravity.CENTER, 0, 0);
opupWindow.setFocusable(true);
popupWindow.update();
flag = true;
}

popupWindow.getContentView().setOnClickListener(new OnClickListener()) {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
popupWindow.dismiss();
}
});
Try this.

You can't listen a key press in popup window, but when you listen to system back key, you can override dismiss() method to intercept it.

Dialog is shown twice

In my android app I have the following code in the OnCreate function:
txtUsername.setOnKeyListener(new OnKeyListener() {
public boolean onKey(View arg0, int arg1, KeyEvent arg2) {
// TODO Auto-generated method stub
String Username = txtUsername.getText().toString();
if (arg1 == KeyEvent.KEYCODE_ENTER) {
DontShowDialog = false;
if ((Username.toLowerCase().endsWith("blabla.com") == false && Username.toLowerCase().endsWith("blabla-bla.nl") == false) || validateEmail(Username) == false) {
final Dialog dialog = new Dialog(arg0.getContext());
dialog.setContentView(R.layout.startdialog);
dialog.setTitle("Warning 1");
Button btOk = (Button) dialog.findViewById(R.id.btOk);
btOk.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
DontShowDialog = true;
dialog.dismiss();
return;
}
});
if (DontShowDialog == false) {
dialog.show();
}
return false;
}
}
txtUsername.clearFocus();
txtPassword.setNextFocusDownId(txtPassword.getId());
return false;
}
});
When the user hits the NEXT button and the username is not right, a dialog is shown which can be canceled by the OK button.
But.... after hitting the OK button, the dialog is shown again... I don't want that.
Why is that happening?
rg,
Eric

By returning false in your onKey() event, you're telling Android that the KeyEvent was not consumed - so my guess is that changing the return statement to true might fix the problem, because Android would know the event was consumed, and it would not re-enter the onKey() method. If you could try that out and share the results that would be great!

Solved it.
moved the line
DontShowDialog = true;
from the OnClick part
Changed the if-then below the onClick to:
if (DontShowDialog == false) {
dialog.show();
DontShowDialog = true;
return false;
}

Disable search button press during ProgressDialog

I have a simple ProgressDialog but I realized if I press the search button the dialog will be dismiss. What can I do to disable search button press during this process?
dialog = new ProgressDialog(Main.this);
dialog.setTitle("Working in progress");
dialog.setMessage("Please wait...");
dialog.setCancelable(false);
dialog.show();
I put this and it didn't work.
dialog = new ProgressDialog(Main.this){
#Override
public boolean onSearchRequested() {
return false;
}
};
This don't work either.
dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_SEARCH && event.getRepeatCount() == 0) {
return true; // Pretend we processed it
}
return false; // Any other keys are still processed as normal
}
});

Try putting
#Override
public boolean onSearchRequested() {
return false;
}
in the activity, instead of the dialog.
Edit: Also try adding the key listener code to the activity:
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// your code
}

Override Dialog's OnBackPressed

How can I specifically override just the back button while within a dialog to finish the entire activity and not just the dialog.
Using setOnCancelListener and setOnDismissListener do not work because there are other times that I simply close the dialog without closing the whole activity behind it.
Edit
Thanks Shubayu that may work!
I was also able to access just the back button in a dialog through this function.
dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
#Override
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK){
finish();
}
return false;
}
});

Override
public void onBackPressed ()
of the activity and put in the way you want the behavior in it. Also set a boolean from your dialog which you use inside onBackPressed() of the Activity. if the boolean is true, run the disabling part of the onBackPressed() code else don't.

#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK){
// your logic goes here
return true;
}
return super.onKeyDown(keyCode, event);
}
use the above code::

You can use : dialog.setOnCancelListener(.....)
first set dialog.setCancelable(true);
than you can place below code :
dialog.setOnCancelListener(new DialogInterface.OnCancelListener()
{
#Override
public void onCancel(DialogInterface dialog)
{
// add code backpress
}
});