I have Settings class. And I use preference inside. In the preference I use AlertDialog which has EditText and radioButton in it.
I want to get the values of the edit text and the radio button from my settings activity, but everything I see online is just about preference OR AlertDialog and I don't understand what to do if they are combined.
my Settings.java:
public class Settings extends AppCompatActivity {
private RadioGroup radioGroup;
AlertDialog.Builder builder;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.settings_activity);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.fragment_setting, new MySettingsFragment())
.commit();
}
public static class MySettingsFragment extends PreferenceFragmentCompat {
#Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
setPreferencesFromResource(R.xml.preference, rootKey);
}
#Override
public boolean onPreferenceTreeClick(Preference p){
final EditText input = new EditText(this.getContext());
if(p.getKey().equals("appointment type")){
return true;
}
if(p.getKey().equals("time frame")){
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = requireActivity().getLayoutInflater();
builder.setView(inflater.inflate(R.layout.set_time, null)).
setPositiveButton(R.string.save_settings, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
**Here i dont know how to take the value**
}
})
.setNegativeButton(R.string.cancel_settings, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
my Prefernce.xml :
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android">
<EditTextPreference
android:key="appointment type"
android:title="Set appointment types"
android:icon="#drawable/appoitment_type"
/>
<Preference
android:id="#+id/timeFrame"
android:key="time frame"
android:title="Allow change meeting"
android:summary="Time frame where clients can't change a meeting"
android:onClick = "popUpWindow"
android:icon="#drawable/no_meetings_changes"
/>
<Preference
android:id="#+id/remindTime"
android:key="remind time"
android:title="Meetings reminder"
android:summary="How much time to remind client before a meeting"
android:icon="#drawable/send_reminder" />
</PreferenceScreen>
my setTime.xml (the dialog):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimaryLight">
<EditText
android:id="#+id/num_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/default_num"
android:inputType="text" />
<RadioGroup
android:id="#+id/radio_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
android:id="#+id/minutes_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/minutes" />
<RadioButton
android:id="#+id/hours_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text = "#string/hours"/>
<RadioButton
android:id="#+id/days_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text = "#string/days"/>
<RadioButton
android:id="#+id/weeks_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text = "#string/weeks"/>
</RadioGroup>
</LinearLayout>
In your OnPreferenceTreeClick function in MySettingsFragment:
#Override
public boolean onPreferenceTreeClick(Preference p){
final EditText input = new EditText(this.getContext());
if(p.getKey().equals("appointment type")){
return true;
}
if(p.getKey().equals("time frame")){
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = requireActivity().getLayoutInflater();
View dialogView = inflater.inflate(R.layout.set_time, null) // add this line
builder.setView(dialogView).
setPositiveButton(R.string.save_settings, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// take the value from selected radio button
RadioGroup radioGroup = (RadioGroup) dialogView.findViewById(R.id.radio_group);
int selectedId = radioGroup.getCheckedRadioButtonId();
// find the radiobutton by returned id
RadioButton radioButton = (RadioButton) findViewById(selectedId);
// get edittext value
EditText edittext = (EditText) dialogView.findViewById(R.id.num_input);
String edittextValue = edittext.getText().toString();
}
})
.setNegativeButton(R.string.cancel_settings, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
Related
i need to add 5 text view in my code. For now there is only one and it is used to put a marker in google maps. I would like that in addition to this you could put another 4 data insertions like (description, age, work, hobbys).Below I also put the custom dialog I made can you check if it's okay? Feel free to ask for anything. How can I do?
add_address.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
View viewcustom = getLayoutInflater().inflate(R.layout.custom_dialog, null);
EditText edt1 = view.findViewById(R.id.Description);
EditText edt2 = view.findViewById(R.id.Age);
EditText edt3 = view.findViewById(R.id.Hobby);
EditText edt4 = view.findViewById(R.id.City);
EditText edt5 = view.findViewById(R.id.address);
final AlertDialog.Builder alertDialog = new AlertDialog.Builder(requireContext())
.setView(viewcustom)
.setPositiveButton("Ok", (dialogInterface, i) -> {
String description = edt1.getText().toString();
String age = edt2.getText().toString();
String Hobby = edt3.getText().toString();
String City = edt4.getText().toString();
String address = edt5.getText().toString();
Toast.makeText(requireContext(), description, Toast.LENGTH_SHORT).show();
firebaseUser = FirebaseAuth.getInstance().getCurrentUser();
reference = FirebaseDatabase.getInstance().getReference("Users").child(firebaseUser.getUid()).child("address");
reference.setValue(address);
});
alertDialog.setNegativeButton("Cancel", null);
alertDialog.create().show();
//startAutoCompleteIntent();
}
});
Customdialog.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Text 1"
android:id="#+id/Description" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Text 2"
android:id="#+id/Age" />
<EditText
android:id="#+id/Hobby"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:hint="Text 3" />
<EditText
android:id="#+id/City"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Text 4" />
<EditText
android:id="#+id/Marker"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Text 5" />
</LinearLayout>
You have to provide your own custom view and then you have to retrieve your EditTexts with findViewByID()
View view = getLayoutInflater().inflate(R.layout.custom_dialog, null);
EditText edt1 = view.findViewById(R.id.Description);
// get other EditTexts here
final Dialog alertDialog = new Dialog(activity);
alertDialog.setView(view);
alertDialog.setPositiveButton("Ok", (dialogInterface, i) -> {
String description = edt1.getText().toString();
//other stuff
});
Entire sample inspired from your code
public class MainActivity extends AppCompatActivity {
private ActivityMainBinding binding;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityMainBinding.inflate(LayoutInflater.from(this));
setContentView(binding.getRoot());
binding.fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
View viewcustom = getLayoutInflater().inflate(R.layout.custom_dialog, null);
EditText edt1 = viewcustom.findViewById(R.id.Description);
EditText edt2 = viewcustom.findViewById(R.id.Age);
EditText edt3 = viewcustom.findViewById(R.id.Hobby);
EditText edt4 = viewcustom.findViewById(R.id.City);
final AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this)
.setView(viewcustom)
.setPositiveButton("Ok", (dialogInterface, i) -> {
String description = edt1.getText().toString();
String age = edt2.getText().toString();
String Hobby = edt3.getText().toString();
String City = edt4.getText().toString();
Toast.makeText(MainActivity.this, description, Toast.LENGTH_SHORT).show();
});
alertDialog.setNegativeButton("Cancel", null);
alertDialog.create().show();
}
});
}
}
I am having troubles setting the two buttons on the lower part of the alert what I am trying to do is get a similar look to the IOS look of the buttons.
here is my current code:
public void openInstructions() {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
final AlertDialog dialog = builder.setNegativeButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
setNewDateOnView();
dialog.cancel();
}
}).setPositiveButton("CANCEL", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
}).create();
TextView myMsg = new TextView(getActivity());
myMsg.setText("ExampleText ");
myMsg.setTextSize(15);
myMsg.setGravity(Gravity.CENTER_HORIZONTAL);
dialog.setView(myMsg);
dialog.setTitle("Confirm Date of Purchase");
dialog.setOnShowListener( new DialogInterface.OnShowListener() {
#Override
public void onShow(DialogInterface arg0) {
Button negativeButton = dialog.getButton(AlertDialog.BUTTON_NEGATIVE);
negativeButton.setTextColor(0xFFFF0000);
Button positiveButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
positiveButton.setTextColor(0xFF0000FF);
}
});
dialog.show();
}
Example of how it looks right now:
How I wanted it to look:
To design Dialog like ios , we can create custom dialog using custom layout like this :
dialog_custom.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:orientation="vertical"
app:layout_constraintHeight_max="wrap">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#drawable/custom_bg">
<TextView
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_below="#+id/title"
android:gravity="center"
android:text="Confirm Date of Purchase"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="17sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/back_ll"
android:orientation="vertical"
android:padding="5dp">
<TextView
android:id="#+id/rebooking_single_tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:textAlignment="center"
android:text="#string/dummuy"
android:textColor="#android:color/black"
android:textSize="17sp" />
</LinearLayout>
<LinearLayout
android:id="#+id/back_ll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_below="#+id/end_time_recycle"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:background="#8F8F8F" />
<LinearLayout
android:id="#+id/rebooking_back_button_ll"
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:gravity="center">
<TextView
android:id="#+id/ok_btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".49"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:text="Ok"
android:textAlignment="center"
android:textColor="#FF6363"
android:textSize="17sp"
android:textStyle="bold" />
<View
android:layout_width="0dp"
android:layout_weight=".01"
android:layout_height="match_parent"
android:layout_below="#+id/end_time_recycle"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:background="#8F8F8F" />
<TextView
android:id="#+id/cancel_btn"
android:layout_width="0dp"
android:layout_weight=".5"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAlignment="center"
android:paddingRight="10dp"
android:text="Cancle"
android:textColor="#7BC5FF"
android:textSize="17sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
Main_Activity
final Dialog dialog=new Dialog(FirstActivity.this);
dialog.setCancelable(false);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
dialog.setContentView(R.layout.dialog_custom);
TextView cancel_btn=dialog.findViewById(R.id.cancel_btn);
cancel_btn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view){
dialog.dismiss();
}
});
TextView ok_btn=dialog.findViewById(R.id.ok_btn);
ok_btn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view){
dialog.dismiss();
}
});
dialog.show();
Well, as a start, google recommends you use the Android Design Guidelines when creating Android apps, really you should be sticking to those as that's what your users will be used to (not Apple's).
Also there's no reason to be assigning the dialog a TextView if all you're doing is showing text, the AlertDialog provides this functionality with setMessage.
If that hasn't convinced you to stick to the normal design rules, the only other option would be creating a Custom View and assign it to the AlertDialog with setView(similar to how you're doing it with the TextView).
Here's a tutorial on creating a Custom View
You can create a custom view such as the one sent and inflate it
Example:
AlertDialog.Builder mBuilder = new AlertDialog.Builder(getActivity());
View mView=getActivity().getLayoutInflater().inflate(R.layout.custom_layout, null);
mBuilder.setView(mView);
Button close = (Button) mView.findViewById(R.id.close);
Button OK = (Button) mView.findViewById(R.id.ok);
close.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//close the dialog
hideDialog1();
}
});
OK.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//do something
}
});
dialog = mBuilder.create();
dialog.setCanceledOnTouchOutside(false);
dialog.show();
Use .setNeutralButton that make place left most
TextView textview;
Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button =(Button)findViewById(R.id.button1);
textview = (TextView)findViewById(R.id.textView1);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
new AlertDialog.Builder(MainActivity.this).setIcon(R.drawable.ic_launcher_background)
.setTitle("Alert Dialog Box Title")
.setMessage("Are you sure( Alert Dialog Message )")
.setPositiveButton("YES", new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
Toast.makeText(MainActivity.this, "You Clicked on Yes", Toast.LENGTH_SHORT).show();
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
Toast.makeText(MainActivity.this, "You Clicked on Cancel", Toast.LENGTH_SHORT).show();
}
})
.setNeutralButton("NO", new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
Toast.makeText(MainActivity.this, "You Clicked on NO", Toast.LENGTH_SHORT).show();
}
})
.show();
}
});
}
===============================================
I'm trying to get the text from editText and input it into my database. The problem I am having is a NullPointerException once i try to submit the text. Any help would be appreciated.
ERROR:
java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
This is from my MainActivity:
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.action_add_task:
final EditText text = (EditText)findViewById(R.id.editText);
AlertDialog dialog = new AlertDialog.Builder(this)
.setTitle("Add New Task")
.setMessage("what do you want to do next")
.setView(R.layout.custom_view)
.setPositiveButton("Add", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
String task;
task = text.getText().toString();
dbHelper.insertNewTask(task);
if(getFragmentRefreshListener()!=null) {
getFragmentRefreshListener().onRefresh();
}
loadTaskList();
}
})
.setNegativeButton("Cancel",null)
.create();
dialog.show();
return true;
}
return super.onOptionsItemSelected(item);
}
my custom_view.xml:
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Enter a task"
android:id="#+id/editText" />
my activity_main.xml:
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/tablayout"
android:background="#color/colorPrimaryDark"
android:minHeight="?attr/actionBarSize"
>
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:backgroundTint="#android:color/darker_gray"
android:visibility="visible">
<ListView
android:id="#+id/lstTask"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:text="#string/tasks"
android:textSize="30sp" />
</android.support.v4.view.ViewPager>
Well since I cant see the xml for MainActivity layout, here it's what most likely it's causing the NPE.
final EditText text = (EditText)findViewById(R.id.editText);
Your searching your edit text in you activity view hierarchy when (assuming from what is shown in the Dialog creation) you should be searching it in the Dialog view hierarchy.
.setView(R.layout.custom_view)
There you are setting that view as the view of the dialog and thats probably what is causing the exception. Try fining the reference to the edit text in the onClick method like this:
AlertDialog dialog = new AlertDialog.Builder(this)
.setTitle("Add New Task")
.setMessage("what do you want to do next")
.setView(R.layout.custom_view)
.setPositiveButton("Add", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
final EditText text = ((AlertDialog)dialog).findViewById(R.id.editText);
String task;
task = text.getText().toString();
dbHelper.insertNewTask(task);
if(getFragmentRefreshListener()!=null) {
getFragmentRefreshListener().onRefresh();
}
loadTaskList();
}
})
.setNegativeButton("Cancel",null)
.create();
dialog.show();
Here is what fixed my problem:
I changed this line:
final EditText text = ((AlertDialog)dialog).findViewById(R.id.editText);
To this:
final EditText text = (EditText) ((AlertDialog)dialog).findViewById(R.id.editText);
I'm new to Android development so please bear with me.
I have the code inside an activity that implements qr scanning. Basically there is an activity before this segments of codes, but its just clicking of a button to go here. and whenever I do that, my app crashes and that is the error that returns. The idea of the app is once the user click the button, it will first display a qr scanner, once it has been scanned, it will now call this XML File
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_scan"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:background="#drawable/scanbg"
tools:context=".ScanActivity">
<RelativeLayout
android:layout_width="300dp"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginLeft="25dp"
android:layout_marginRight="25dp"
android:layout_marginTop="62dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Question Here"
android:textSize="22dp"
android:id="#+id/questionhere"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/questionhere"
android:hint="Answer"
android:id="#+id/answerhere"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Correct or not indicator"
android:id="#+id/indicator"
android:layout_below="#id/answerhere"
android:textSize="18dp"/>
<!--this textview will be programmed to be changed as correct or not-->
<!--if answer == correct then "correct!" else "wrong answer"-->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Point(s):"
android:id="#+id/userpoints"
android:layout_below="#id/indicator"
android:textSize="18dp"/>
<Button
android:layout_marginTop="20dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/userpoints"
android:layout_alignParentEnd="true"
android:text="Go"
android:textSize="14dp"
android:background="#B0DAD5"
android:id="#+id/gosagot"/>
</RelativeLayout>
and Here is the java file
public class ScanActivity extends AppCompatActivity implements ZXingScannerView.ResultHandler{
Button validateanswer;
ProgressDialog progress;
private ZXingScannerView mScannerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan);
mScannerView = new ZXingScannerView(this);
setContentView(mScannerView);
mScannerView.setResultHandler(this);
mScannerView.startCamera();
validateanswer = (Button)findViewById(R.id.gosagot); //Im having error here
validateanswer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
progress.setMessage("Connecting...");
progress.setCancelable(false);
progress.show();
EditText theanswer = (EditText)findViewById(R.id.answerhere);
String sagotdito = theanswer.getText().toString();
RequestFactory.confirmanswer(ScanActivity.this, sagotdito, new RequestCallback<Boolean>() {
#Override
public void onSuccess(Boolean response) {
runOnUiThread(new Runnable() {
#Override
public void run() {
finish();
//load new question
progress.dismiss();
}
});
}
#Override
public void onFailed(String message) {
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(ScanActivity.this, "Wrong Answer. Try Again!", Toast.LENGTH_LONG).show();
progress.dismiss();
}
});
}
});
}
});
}
continuation...
#Override
protected void onPause() {
super.onPause();
mScannerView.stopCamera();
}
#Override
public void handleResult(final Result result) {
Log.w("handleResult",result.getText());
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final EditText answertoQuestion = new EditText(this);
answertoQuestion.setHint("answer");
builder.setTitle("Scan Result");
builder.setMessage(result.getText());
builder.setPositiveButton("Go", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
setContentView(R.layout.activity_scan);
TextView j = (TextView)findViewById(R.id.questionhere);
EditText k = (EditText)findViewById(R.id.answerhere);
String n = k.getText().toString();
j.setText(result.getText());
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
}
please help me.
If you check the examples of ZXing...
In your activity XML, you can add a region for the QR scanner.
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
Grab that and add the scanner view there.
public class ScannerActivity extends AppCompatActivity implements ZXingScannerView.ResultHandler {
private ZXingScannerView mScannerView;
#Override
public void onCreate(Bundle state) {
super.onCreate(state);
setContentView(R.layout.activity_simple_scanner);
ViewGroup contentFrame = (ViewGroup) findViewById(R.id.content_frame);
mScannerView = new ZXingScannerView(this);
contentFrame.addView(mScannerView);
}
Your error is that you can't findViewById on your button when you replaced the content view with some other view that doesn't have the ID you want to find.
And even if you "switched" findViewById and setContentView around, your code wouldn't crash, but you would no longer have a button in the content view, so having the click action would be pointless.
The problem is that the button is a part of activity_scan and you set setContentView(mScannerView) to other layout.You are bound to get this error as the activity does not have a refernce to the view(button) you are refering.
What you can do is make the mScannerView a part of your main layout and then get it with findViewById();
This is my code for layoutInflater in alert message. When running on device, only OK and CANCEL buttons appear. The popup.xml (for layout) does not exist.
This is my code
public void onClick(View view) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(reconfirm.this);
LayoutInflater layoutInflater
= (LayoutInflater) getBaseContext()
.getSystemService(LAYOUT_INFLATER_SERVICE);
View popupView = layoutInflater.inflate(R.layout.popup, null, false);
alertDialogBuilder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intObj = new Intent(getApplicationContext(),
agree.class);
startActivity(intObj);
}
});
alertDialogBuilder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intObj = new Intent(getApplicationContext(),
IntentExampleActivity.class);
startActivity(intObj);
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
this is my popup.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="166dp"
android:orientation="vertical" >
</LinearLayout>
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.12"
android:text="By using any of the websites" />
<TextView
android:id="#+id/more"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.12"
android:linksClickable="true"
android:text="More" />
<CheckBox
android:id="#+id/checkBox1"
android:layout_width="match_parent"
android:layout_height="92dp"
android:layout_weight="0.21"
android:text="I have read and agree to the Terms and Conditions." />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="114dp"
android:layout_margin="20dp"
android:orientation="vertical" >
</LinearLayout>
Possible duplicate: Using LayoutInflater and AlertDialog
It seems you are trying to load text from static TextView. May be it should be EditText?
TextView stax1=(TextView)dialogView.findViewById(R.id.xxx);
String sax1 = stax1.getText().toString();
EDITED:
Try this code:
lay1.setOnLongClickListener(new OnLongClickListener() {
public boolean onLongClick(View v)
{
LayoutInflater myLayout = LayoutInflater.from(context);
final View dialogView = myLayout.inflate(R.layout.alerthelp, null);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
context);
alertDialogBuilder.setView(dialogView);
AlertDialog alertDialog = alertDialogBuilder.create();
Button button1 = (Button) alertDialog.findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
TextView stax1=(TextView)dialogView.findViewById(R.id.xxx);
String sax1 = stax1.getText().toString();
double sx1 = Double.parseDouble(sax1);
TextView textviewlay1 =(TextView)dialogView.findViewById(R.id.m1ab);
String stringl1 = textviewlay1.getText().toString();
Double doubl1 = Double.parseDouble(stringl1);
TextView textviewp1 = (TextView)dialogView.findViewById(R.id.inputPrice);
String stringp1 = textviewp1.getText().toString();
Double intp1 = Double.parseDouble(stringp1);
double resultl1 = intp1 - (doubl1*sx1);
int precision21t = 100; //keep 4 digits
resultl1= Math.floor(resultl1 * precision21t +.5)/precision21t;
textViewtotalproduct.setText(String.valueOf(resultl1));
}
});
return false;
}});
Try this
Dialog dialog = new Dialog(YourActivtyclass.this);
dialog.setContentView(R.layout.yourpopuplayout);
final TextView textView1= (TextView) dialog.findViewById(R.id.textView1);
dialog.show();
you can use this anywhere.And you can fully customize your alert dialog.