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Issues with ActivityMainBindingImpl.java

I'm writing a celsius-farenheits converter but the program crashes for something that I didn't found
I'm actually trying to use the data binding and the view model but Android Studio founded some issues in ActivityMainBindingImpl.java that I didn't write by myself. Here's the part of code were it founds a problem. It is in line 104 at com.example.convertitorecelsius_farenheit.MainViewModel viewModel = mViewModel; It says "Cannot resolve symbol 'mViewModel'"
There's another problem in line 33 in "super(bindingComponent, root, 0", it says "'ActivityMainBinding()' has private access in 'com.example.convertitorecelsius_farenheit.databinding.ActivityMainBinding'"
The last problem is at line 8 in "public class ActivityMainBindingImpl extends ActivityMainBinding {", the error is in "ActivityMainBinding", it says "Cannot inherit from final 'com.example.convertitorecelsius_farenheit.databinding.ActivityMainBinding'"
Here's the full code where I founded these problems
package com.example.convertitorecelsius_farenheit.databinding;
import com.example.convertitorecelsius_farenheit.R;
import com.example.convertitorecelsius_farenheit.BR;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import android.view.View;
#SuppressWarnings("unchecked")
public class ActivityMainBindingImpl extends ActivityMainBinding {
#Nullable
private static final androidx.databinding.ViewDataBinding.IncludedLayouts sIncludes;
#Nullable
private static final android.util.SparseIntArray sViewsWithIds;
static {
sIncludes = null;
sViewsWithIds = new android.util.SparseIntArray();
sViewsWithIds.put(R.id.cambiaTemperatura, 3);
sViewsWithIds.put(R.id.inputTemperatura, 4);
sViewsWithIds.put(R.id.converti, 5);
}
// views
#NonNull
private final androidx.constraintlayout.widget.ConstraintLayout mboundView0;
// variables
// values
// listeners
// Inverse Binding Event Handlers
public ActivityMainBindingImpl(#Nullable androidx.databinding.DataBindingComponent bindingComponent, #NonNull View root) {
this(bindingComponent, root, mapBindings(bindingComponent, root, 6, sIncludes, sViewsWithIds));
}
private ActivityMainBindingImpl(androidx.databinding.DataBindingComponent bindingComponent, View root, Object[] bindings) {
super(bindingComponent, root, 0
, (android.widget.Button) bindings[3]
, (android.widget.Button) bindings[5]
, (android.widget.EditText) bindings[4]
, (android.widget.TextView) bindings[2]
, (android.widget.TextView) bindings[1]
);
this.mboundView0 = (androidx.constraintlayout.widget.ConstraintLayout) bindings[0];
this.mboundView0.setTag(null);
this.textTemperatura.setTag(null);
this.textView.setTag(null);
setRootTag(root);
// listeners
invalidateAll();
}
#Override
public void invalidateAll() {
synchronized(this) {
mDirtyFlags = 0x2L;
}
requestRebind();
}
#Override
public boolean hasPendingBindings() {
synchronized(this) {
if (mDirtyFlags != 0) {
return true;
}
}
return false;
}
#Override
public boolean setVariable(int variableId, #Nullable Object variable) {
boolean variableSet = true;
if (BR.viewModel == variableId) {
setViewModel((com.example.convertitorecelsius_farenheit.MainViewModel) variable);
}
else {
variableSet = false;
}
return variableSet;
}
public void setViewModel(#Nullable com.example.convertitorecelsius_farenheit.MainViewModel ViewModel) {
this.mViewModel = ViewModel;
synchronized(this) {
mDirtyFlags |= 0x1L;
}
notifyPropertyChanged(BR.viewModel);
super.requestRebind();
}
#Override
protected boolean onFieldChange(int localFieldId, Object object, int fieldId) {
switch (localFieldId) {
}
return false;
}
#Override
protected void executeBindings() {
long dirtyFlags = 0;
synchronized(this) {
dirtyFlags = mDirtyFlags;
mDirtyFlags = 0;
}
java.lang.String viewModelTypeCurrentTemperature = null;
int viewModelConvertiTemperatura = 0;
com.example.convertitorecelsius_farenheit.MainViewModel viewModel = mViewModel;
if ((dirtyFlags & 0x3L) != 0) {
if (viewModel != null) {
// read viewModel.typeCurrentTemperature
viewModelTypeCurrentTemperature = viewModel.getTypeCurrentTemperature();
// read viewModel.convertiTemperatura()
viewModelConvertiTemperatura = viewModel.convertiTemperatura();
}
}
// batch finished
if ((dirtyFlags & 0x3L) != 0) {
// api target 1
this.textTemperatura.setText(viewModelConvertiTemperatura);
androidx.databinding.adapters.TextViewBindingAdapter.setText(this.textView, viewModelTypeCurrentTemperature);
}
}
// Listener Stub Implementations
// callback impls
// dirty flag
private long mDirtyFlags = 0xffffffffffffffffL;
/* flag mapping
flag 0 (0x1L): viewModel
flag 1 (0x2L): null
flag mapping end*/
//end
}
Here's the program I wrote
MainActivity.java
package com.example.convertitorecelsius_farenheit;
import androidx.appcompat.app.AppCompatActivity;
import androidx.lifecycle.ViewModelProvider;
import android.os.Bundle;
import android.widget.EditText;
import com.example.convertitorecelsius_farenheit.databinding.ActivityMainBinding;
public class MainActivity extends AppCompatActivity {
private ActivityMainBinding binding;
private MainViewModel viewModel;
public EditText inputTemperature;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
inputTemperature = findViewById(R.id.inputTemperatura);
binding = ActivityMainBinding.inflate(getLayoutInflater());
binding.setLifecycleOwner(this);
setContentView(binding.getRoot());
viewModel = new ViewModelProvider(this).get(MainViewModel.class);
binding.setViewModel(viewModel);
}
public int getInputTemperature() {
return Integer.parseInt(inputTemperature.toString());
}}
MainViewModel.java
package com.example.convertitorecelsius_farenheit;
import androidx.lifecycle.ViewModel;
public class MainViewModel extends ViewModel {
public int grades;
public boolean isCelsius = false;
MainActivity temperaturaInserita = new MainActivity();
//private final MutableLiveData<String> _TypeCurrentTemperatura = new MutableLiveData<>();
private String _TypeCurrentTemperatura = ""; //indicates if the temperature is celsius or farenheit
public String getTypeCurrentTemperature() {
return _TypeCurrentTemperatura;
}
public void changeTypeTemperature() {
if (isCelsius) {
isCelsius = false;
_TypeCurrentTemperatura = "F°";
} else {
isCelsius = true;
_TypeCurrentTemperatura = "C°";
}
}
public int convertiTemperatura() { //convertTemperature (that's the italian name)
if (isCelsius) {
grades = (int) ((temperaturaInserita.getInputTemperature() * 1.8) + 32);
} else {
grades = (int) ((int) ((temperaturaInserita.getInputTemperature()) -32) * .5556);
}
return grades;
}}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="viewModel"
type="com.example.convertitorecelsius_farenheit.MainViewModel" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="348dp"
android:text="#{viewModel.typeCurrentTemperature}"
android:textSize="24sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/cambiaTemperatura"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="80dp"
android:text="c--f"
app:layout_constraintBottom_toTopOf="#+id/textView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent" />
<EditText
android:id="#+id/inputTemperatura"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="52dp"
android:ems="10"
android:inputType="number"
app:layout_constraintBottom_toTopOf="#+id/cambiaTemperatura"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<Button
android:id="#+id/converti"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="273dp"
android:layout_marginBottom="274dp"
android:text="converti"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/inputTemperatura"
app:layout_constraintVertical_bias="1.0" />
<TextView
android:id="#+id/textTemperatura"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="23dp"
android:text="#{viewModel.convertiTemperatura()}"
android:textSize="24sp"
app:layout_constraintBottom_toTopOf="#+id/textView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Can somebody help me :)

There are some things wrong in your code:
You're setting the activity view twice, remove the first line: setContentView(R.layout.activity_main);
Since you're using view binding (different thing from data binding), you dont need to call findViewById replace it with inputTemperature = binding.inputTemperatura
If you're already using data binding why bother with view binding? You can do all input/output related tasks in data binding.
You SHOULD NEVER instantiate ANDROID activities or hold a reference to it, this is task of the Android framework, remove the line MainActivity temperaturaInserita = new MainActivity(); of your viewmodel.
Check this answer it may help you: Android : Difference between DataBinding and ViewBinding
EDIT
You don't need to call methods of your activity from your viewmodel, this is a bad practice, because if the system destroys your activity you will end with a NPE in your view model, you have 2 options:
Use two way data binding to set/get the value of the temperature from the viewmodel: https://bignerdranch.com/blog/two-way-data-binding-on-android-observing-your-view-with-xml/
Change the function in the view model to receive as argument the value of the input text.
I recommend to go with first option, this way you will have the updated value always in your view model and also can survive config changes.
And remember don't matter what, your viewmodel SHOULD never have a reference to the Activity.

Simple Countdown in Android Studio using JAVA

I'm trying to make simple 60seconds countdown timer in Android Studio using java. Only problem is that it appears like this: "00:60". But I want it to be like this: "60". And also I want to reset and switch to another class as soon as timer hits 0. And when I visit this timer activity I want it to start timer again and so on... Here's my java code:
public class BeginAfter extends AppCompatActivity {
TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_begin_after);
textView = findViewById(R.id.timer);
long duration = TimeUnit.MINUTES.toMillis(1);
new CountDownTimer(duration, 1000){
#Override
public void onTick(long l) {
String sDuration = String.format(Locale.ENGLISH,"%02d : %02d"
,TimeUnit.MILLISECONDS.toMinutes(l)
,TimeUnit.MILLISECONDS.toSeconds(l) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(l)));
textView.setText(sDuration);
}
#Override
public void onFinish() {
textView.setVisibility(View.INVISIBLE);
}
}.start();
}
}
And here's my xml code:
<TextView
android:id="#+id/timer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#d10e00"
android:textSize="37dp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.064" />

Try:
String sDuration =
String.format(
Locale.ENGLISH,
"%02d",
TimeUnit.MILLISECONDS.toSeconds(l) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(l))
);
This will replace %02d in the String "%02d" with the first given integer in the following arguments of String.format and try to display it with only 2 digits.

Issue with Start Button on Android Calculator

I am working on an Android calculator app not using any of the built in timer based classes in Android, but instead using Handlers and Threads to update the UI. I'm not sure if there is a problem with my logic or not, but for whatever reason when I set a time and hit the Start button, nothing happens on the screen at all. The targeted TextView does not decrease as it should. Again, I may have made a simple errors (or a few), but I am posting my java and xml files for you all to look at. Thanks in advance for any responses.
TimerActivity.java
package com.example.stins.intentsandtimer;
import android.content.DialogInterface;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.NumberPicker;
import android.widget.TextView;
import android.os.Handler;
import android.os.Message;
import android.content.Context;
import android.os.Vibrator;
public class TimerActivity extends AppCompatActivity implements View.OnClickListener {
TextView hours, minutes, seconds;
Button numberPicker;
private int hrs, min, sec;
private boolean start;
Handler timerHandler = new Handler(){
/**
* Handler for the timer class. It receives the onStart runnable to allow the textviews
* to be updated. It checks to see if all textviews are empty and only updates them if
* they follow the conditions of a traditional timer. Including moving from 1 hour to 59 minutes.
* The handler also sends the Vibrator function once the timer is complete.
* #param msg
*/
#Override
public void handleMessage(Message msg){
super.handleMessage(msg);
TextView txtSeconds = (TextView) findViewById(R.id.textview_seconds);
TextView txtMinutes = (TextView) findViewById(R.id.textview_minutes);
TextView txtHours = (TextView) findViewById(R.id.textview_hours);
int zeroCheck = Integer.parseInt(txtSeconds.getText().toString());
if (zeroCheck > 0) {
sec -= 1;
txtSeconds.setText(sec + "");
} else if (min > 0 && sec == 0) {
min -= 1;
txtMinutes.setText(min + "");
sec = 59;
txtSeconds.setText(sec + "");
} else if (hrs > 0 && min == 0 && sec == 0) {
hrs -= 1;
txtHours.setText(hrs + "");
min = 59;
txtMinutes.setText(min + "");
sec = 59;
txtSeconds.setText(sec + "");
} else {
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
v.vibrate(1000);
}
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_timer);
this.setTitle("Timer");
Button btnStart = (Button) findViewById(R.id.start_button);
Button btnStop = (Button) findViewById(R.id.stop_button);
Button btnReset = (Button) findViewById(R.id.reset_button);
hours = (TextView) findViewById(R.id.textview_hours);
numberPicker = (Button) findViewById(R.id.btn_set_hours);
numberPicker.setOnClickListener(this);
minutes = (TextView) findViewById(R.id.textview_minutes);
numberPicker = (Button) findViewById(R.id.btn_set_minutes);
numberPicker.setOnClickListener(this);
seconds = (TextView) findViewById(R.id.textview_seconds);
numberPicker = (Button) findViewById(R.id.btn_set_seconds);
numberPicker.setOnClickListener(this);
btnReset.setOnClickListener(new Button.OnClickListener() {
public void onClick(View view) {
TextView txtSeconds = (TextView) findViewById(R.id.textview_seconds);
TextView txtMinutes = (TextView) findViewById(R.id.textview_minutes);
TextView txtHours = (TextView) findViewById(R.id.textview_hours);
sec = 0;
min = 0;
hrs = 0;
txtSeconds.setText(sec+"");
txtMinutes.setText(min+"");
txtHours.setText(hrs+"");
}
}
);
btnStart.setOnClickListener(new Button.OnClickListener() {
public void onClick(View view) {
start = true;
onStart();
}
}
);
btnStop.setOnClickListener(new Button.OnClickListener() {
public void onClick(View view) {
start = false;
}
}
);
}
protected void onStart(){
super.onStart();
final Thread myThread = new Thread(new Runnable(){
#Override
public void run() {
while (sec > 0 || min > 0 || hrs > 0) {
if(start) {
try {
Thread.sleep(1000);
timerHandler.sendMessage(timerHandler.obtainMessage());
} catch (InterruptedException e) {
e.printStackTrace();
}
}
else{
}
}
}
});
myThread.start();
}
public void onClick (View v){
switch (v.getId()) {
case R.id.btn_set_hours:
hourPickerDialog();
break;
case R.id.btn_set_minutes:
minutePickerDialog();
break;
case R.id.btn_set_seconds:
secondPickerDialog();
break;
default:
break;
}
}
private void hourPickerDialog(){
NumberPicker myNumberPicker = new NumberPicker(this);
myNumberPicker.setMaxValue(99);
myNumberPicker.setMinValue(0);
NumberPicker.OnValueChangeListener myValChangedListener = new NumberPicker.OnValueChangeListener() {
#Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
hours.setText(""+newVal);
}
};
myNumberPicker.setOnValueChangedListener(myValChangedListener);
AlertDialog.Builder builder = new AlertDialog.Builder(this).setView(myNumberPicker);
builder.setTitle("Set Hours");
builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.show();
}
private void minutePickerDialog(){
NumberPicker myNumberPicker = new NumberPicker(this);
myNumberPicker.setMaxValue(59);
myNumberPicker.setMinValue(0);
NumberPicker.OnValueChangeListener myValChangedListener = new NumberPicker.OnValueChangeListener() {
#Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
minutes.setText(""+newVal);
}
};
myNumberPicker.setOnValueChangedListener(myValChangedListener);
AlertDialog.Builder builder = new AlertDialog.Builder(this).setView(myNumberPicker);
builder.setTitle("Set Minutes");
builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.show();
}
private void secondPickerDialog(){
NumberPicker myNumberPicker = new NumberPicker(this);
myNumberPicker.setMaxValue(59);
myNumberPicker.setMinValue(0);
NumberPicker.OnValueChangeListener myValChangedListener = new NumberPicker.OnValueChangeListener() {
#Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
seconds.setText(""+newVal);
}
};
myNumberPicker.setOnValueChangedListener(myValChangedListener);
AlertDialog.Builder builder = new AlertDialog.Builder(this).setView(myNumberPicker);
builder.setTitle("Set Seconds");
builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.show();
}
}
activity_timer.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:gravity="center_horizontal"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
android:orientation="horizontal"
android:gravity="center">
<TextView
android:id="#+id/textview_hours"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="00"
android:textSize="70sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text=":"
android:textSize="70sp"/>
<TextView
android:id="#+id/textview_minutes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="00"
android:textSize="70sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text=":"
android:textSize="70sp"/>
<TextView
android:id="#+id/textview_seconds"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="00"
android:textSize="70sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center">
<Button
android:id="#+id/btn_set_hours"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hours"/>
<Button
android:id="#+id/btn_set_minutes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Minutes"/>
<Button
android:id="#+id/btn_set_seconds"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Seconds"/>
</LinearLayout>
<Button
android:id="#+id/start_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_marginTop="16dp"
android:background="?selectableItemBackgroundBorderless"
android:text="#string/timer_start"
style="#style/MyButton"
/>
<Button
android:id="#+id/stop_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_marginTop="16dp"
android:background="?selectableItemBackgroundBorderless"
android:text="#string/timer_stop"
style="#style/MyButton"/>
<Button
android:id="#+id/reset_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:background="?selectableItemBackgroundBorderless"
android:text="#string/timer_reset"
style="#style/MyButton"/>
</LinearLayout>

There's several things going on in your code. I won't try to address them all but just some to get your code doing about what it should. I've copied & tried your code & it actually changes the display for me. I skipped your time picker dialogs & just set sec=20 to start. If you're not getting any changing display, is the display being set initially from the time pickers?
Anyway, 1st let's talk about debugging. One way to do this is to put Log statements in your code. Start by putting this at the top of the file
private final static String TAG = "TimerActivity";
Then in the code have things like this:
// put this in the start button click listener
Log.d(TAG, "Start clicked");
// or this in handleMessage
Log.d(TAG, "handleMessage(), seconds = " + sec);
Having these Log message can help you know what your program has done & what it hasn't, plus show you some variable values. You could also use the debugger which I won't get into now.
Now for your code. onStart() is a lifecycle method. You should not call it yourself. Rename your method (maybe something like onStartButton()). As you have it now, you have 2 instances of your thread running and your counter goes down twice in each second.
In handleMessage(), you have variables (hrs, min, sec) that you use to track the time but you also have zeroCheck that you read from the text on the display. The better thing to do would be use the variables you're already keeping anyway (if(sec > 0) { sec -= 1;...). I didn't verify your logic in the rest of these conditions. Once the display is updating, I'll leave that for you.
Lastly, txtSeconds.setText(sec + ""); is not a good way to use setText() (it's probably OK for Log messages but it's better to get accustomed to using text in other ways). There is more than 1 good way to display text but for this instance, you need special formatting. That is you want your display to show a leading 0 for each number "00:09:07" not "0:9:7". You can get that with
txtSeconds.setText(String.format("%02d", sec));
This way always gives a 2 digit display, from 0 to 59. Other useful formatters are "%08x" for 32 bit hexadecimal or "%.2f" which limits display to 2 places past the decimal place like for showing dollars and cents.
So, none of these will fix the problem in your post but they will get your final code closer to what it needs to be. As I said, your code updates the display as it is for me (not using the time pickers). You can start by setting sec to a fixed number then hit the "Start" button to see what happens. If there are problems in your time pickers, you can use Log messages to track down the bugs & fix them.
EDIT:
So what's happening with your timer not starting is that, while you change the display in your number picker, you don't set the underlying variables (sec etc.) Define some variables to use as temp storage (temp_sec etc.) then set this in onValueChange(),
temp_sec = newVal;
Now in your positiveButton onClick(), you'll have
sec = temp_sec;

Getting a decimal number from EditText on Android Studio

EDIT:Solved!
I know this has been posted before, but the answers I've seen from those are not working for me.
I'm trying to get the input from one textfield (which i've specified as a decimal input) but can't think of any other way to get the value of it other than to toString it.
What I have below crashes and the error logs say
java.lang.IllegalStateException: Could not execute method of the activity
public void buttonOnClick(View v){
// do something when the button is clicked
Double inputNum;
TextView mField = (TextView) findViewById(R.id.mField);
TextView kmField = (TextView) findViewById(R.id.kmField);
if(mField.length() > 0){
inputNum = ( Double.valueOf(kmField.getText().toString()) )/ 0.62137;
mField.setText(inputNum.toString());
}
}

java.lang.IllegalStateException: Could not execute method of the
activity
Possible reason that this issue occur is kmField.getText().toString() return null. So please put some validation over here for kmField
public void buttonOnClick(View v){
// do something when the button is clicked
Double inputNum;
TextView mField = (TextView) findViewById(R.id.mField);
TextView kmField = (TextView) findViewById(R.id.kmField);
if(kmField.getText().toString().isEmpty()){
inputNum = ( Double.valueOf(kmField.getText().toString()) )/ 0.62137;
mField.setText(inputNum.toString());
}
}

xml file:
<EditText
android:id="#+id/editS0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ems="10"
android:hint="#string/S0"
android:inputType="numberDecimal" />
<Button
android:id="#+id/getS0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/setS0" />
in your java file:
EditText textS0 = (EditText)findViewById(R.id.editS0);
Button btn_S0 = (Button)findViewById(R.id.getS0);
btn_S0.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
double S0 = Double.parseDouble(textS0.getText().toString());
}
});

EditText on demand widget

I'd like to have a TextView display text, and when you click/longclick on it, a textbox should "show up" and allow editing of said text. When you're done editing (onkey enter i suppose) it should revert back to a textview with the updated text...
I'm wondering if it's feasable to implement such a widget or should I hack a workaround? Tips and suggestions are very welcome.
If you need further idea of what I mean, just go to your e.g. (windows) skype profile and see for yourself.
EDIT:
Clarification: I'm specifically asking for a widget or such which is a textview until clicked on, then transforms to an edittext containing the same text; once done editing it transforms back to a textview representing the new changed text. Thats what i mean by "edittext on demand widget".
But I'm hoping to get something better than
public class Widget {
TextView text;
EditText edit;
String textToRepresent;
//...
}

You have a few different options here.
First you will have to register an onClick or onLongClick to the TextView that you want to make interactive. Just make sure that the user knows it's clickable
Then have your onClick function start a DialogFragment. I like to create show functions. Note that you can use the support libraries here to make your app backwards compatible.
private void showDialog() {
MyDialogFragment dialog = new MyDialogFragment();
dialog.show(getSupportFragmentManager(), "dialog");
}
The DialogFragment is pretty straight forward. In your onCreateView you'll inflate the View that you'll want to display to the user. You can alternatively wrap it with a simple AlertDialogBuilder if you don't want to go custom.
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.your_dialog_layout);
mTitleEditText = (TextView) view.findViewById(R.id.title);
mTitleEditText.setOnClickListener(this);
return view;
}
After your findViewByIds set your onClickListeners.
The last thing you have to take care of is getting data back into your original TextView.
You can do this by creating a public method in your Activity that you can call from inside of your DialogFragment. Something like this
#Override
public void onClick(View v) {
int clickedId = v.getId();
if (clickedId == mDoneButton.getId()) {
MyActivity activity = (MyActivity)getActivity();
mTitle = mTitleEditText.getText().toString();
activity.setText(mTitle);
dismiss();
}
}
I would recommend using a DialogFragment because it will handle your life cycle nicely.
However, another option would be to create a new Activity themed to be a dialog
<activity android:theme="#android:style/Theme.Dialog" />
Then you can startActivityForResult to display your dialog and then capture your results in onActivityResult

Here is my solution. I just give you the basic one. Create a TextView in front of EditText and two Button OK,Cancel (You can change to ImageButton like Skype). Change the visiblity of two view. The code is so simple without comment. You can add some null checking according your logic.
public class CompoundTextView extends RelativeLayout implements OnClickListener {
private EditText edt;
private TextView txt;
RelativeLayout layout;
public SkypeTextView(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}
#Override
protected void onFinishInflate() {
super.onFinishInflate();
edt = (EditText) findViewById(R.id.edt);
txt = (TextView) findViewById(R.id.txt_name);
layout = (RelativeLayout) findViewById(R.id.layout);
Button ok = (Button) findViewById(R.id.ok_btn);
Button cancel = (Button) findViewById(R.id.cancel_btn);
ok.setOnClickListener(this);
cancel.setOnClickListener(this);
txt.setOnClickListener(this);
}
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.ok_btn:
String editString = edt.getText().toString();
txt.setText(editString);
layout.setVisibility(View.INVISIBLE);
txt.setVisibility(View.VISIBLE);
break;
case R.id.cancel_btn:
layout.setVisibility(View.INVISIBLE);
txt.setVisibility(View.VISIBLE);
break;
case R.id.txt_name:
txt.setVisibility(View.INVISIBLE);
layout.setVisibility(View.VISIBLE);
break;
}
}
}
Create a XML skypetextview. You can customize font and background to make it's prettier.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="#+id/txt_name"
android:layout_width="fill_parent"
android:layout_height="100dp"
android:textColor="#FFFFFF"
android:textSize="14sp"
android:background="#ff0000" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="invisible"
android:id="#+id/layout" >
<EditText
android:id="#+id/edt"
android:layout_width="270dp"
android:layout_height="100dp" />
<Button
android:id="#+id/ok_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/edt"
android:text="OK" />
<Button
android:id="#+id/cancel_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/ok_btn"
android:layout_toRightOf="#id/edt"
android:text="Cancel" />
</RelativeLayout>
</RelativeLayout>
add (or include) this view to the layout you want.
Example :
public class TestActivity extends Activity {
SkypeTextView test;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LayoutInflater inflate = getLayoutInflater();
test = (SkypeTextView ) inflate.inflate(R.layout.compound_text_view,
null);
setContentView(test);
}
PS: i forgot. You should add some underline format for your textview in order to make user notice it clickable

Let a EditText change its background based on its state(Editable or Frozen). Set a background selector that does this.
Use this selector xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_focused="true" android:drawable="#android:drawable/edit_text"/>
<item android:drawable="#android:drawable/screen_background_light_transparent"/>
</selector>

Like I said on thursday... Yul was pretty close but not quite close. He did have a general same idea but (theoretically) rushed into code too early ;)
The TextBoxOnDemand code supplied below is production-ready. The idea is similar to what I wanted to avoid in the OP and what Yul suggested, but with optimal implementation (using a ViewSwitcher instead of a RelativeLayout for instance)
I gathered the resources needed for this in the following articles:
Creating custom view from xml
Declaring a custom android UI element using XML
Defining custom attrs
How to pass custom component parameters in java and xml
http://kevindion.com/2011/01/custom-xml-attributes-for-android-widgets/
and decided to post them here because the official Google "training" docs are useless and are either obsolete (deprecated) or do not cover what I needed. I hope you don't mind me claiming my own bounty, but this is the solution I wanted (and expected, ergo the bounty).
I guess the code will have to do ;)
TextBoxOnDemand.java:
package com.skype.widget;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.text.SpannableString;
import android.text.style.UnderlineSpan;
import android.text.util.Linkify;
import android.util.AttributeSet;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnFocusChangeListener;
import android.view.View.OnHoverListener;
import android.view.View.OnLongClickListener;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;
import android.widget.ViewSwitcher;
import com.skype.ref.R;
import com.skype.ref.RemoteKeys;
public class TextBoxOnDemand extends ViewSwitcher implements OnClickListener, OnLongClickListener, OnFocusChangeListener, OnHoverListener,
OnEditorActionListener
{
public static final String LOGTAG = "TextBoxOnDemand";
private View btmGuard;
private ImageButton cancel, accept;
private EditText editor;
private RelativeLayout editorLayout;
private TextView face;
private String hint = new String();
private boolean inEditMode = false; //normally this is in textview mode
private boolean inputReady = false;
private String ourData = new String();
private String prefillData = new String();
private String tag = new String(); //usually tag is empty.
private View topGuard;
private int autoLinkMask;// = Linkify.EMAIL_ADDRESSES; //Linkify.ALL;
private ColorStateList textColor, hintColor = null;
public TextBoxOnDemand(Context context)
{
super(context);
build(context);
setEditable(false); //init
}
public TextBoxOnDemand(Context context, AttributeSet attrs)
{
super(context, attrs);
build(context);
init(context, attrs);
setEditable(false); //init
}
public String getPrefillData()
{
return prefillData;
}
public String getTag()
{
return tag;
}
public String getText()
{
Log.d(LOGTAG, "getText() returning '" + ourData + "'");
return ourData;
}
public boolean hasPrefillData()
{
return prefillData.isEmpty();
}
public boolean isEditable()
{
Log.d(LOGTAG, "isEditable() returning " + inEditMode);
return inEditMode;
}
#Override
public void onClick(View v)
{
Log.d(LOGTAG, "onClick(" + v + ")");
if (inEditMode)
{
if (v.equals(accept))
{
if (editor.getEditableText().length() == 0 || editor.getEditableText().length() > 5)
ourData = editor.getEditableText().toString();
setEditable(false);
} else if (v.equals(cancel))
{
setEditable(false);
}
}
}
#Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event)
{
// Log.d(LOGTAG, "onEditorAction(" + v + ", " + actionId + ", " + event + ") fired!");
Log.d(LOGTAG, "onEditorAction() fired, inputReady = " + inputReady);
if (editor.getEditableText().length() > 0 && editor.getEditableText().length() < (prefillData.length() + 2)) return true; //the user needs to enter something
if (inputReady && (event.getKeyCode() == RemoteKeys.ENTER.keycode() || event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) //always is
{
if (editor.getEditableText().length() > prefillData.length() || editor.getEditableText().length() == 0)
ourData = editor.getEditableText().toString();
setEditable(false);
return false;
}
if ((editor.getEditableText().toString().compareToIgnoreCase(ourData) == 0 || editor.getEditableText().toString()
.compareToIgnoreCase(prefillData) == 0)
&& !inputReady) //means we didn't just keep on holding enter
return true;
else
inputReady = true;
return true;
}
#Override
public void onFocusChange(View v, boolean hasFocus)
{
Log.d(LOGTAG, "onFocusChange(" + v + ", " + hasFocus + ")\tinEditMode = " + inEditMode);
if (inEditMode)
{
if (hasFocus && (v.equals(topGuard) || v.equals(btmGuard)))
{
setEditable(false);
requestFocus();
}
if (hasFocus && (v.equals(editor) || v.equals(accept) || v.equals(cancel)))
{
//do nothing, you should be able to browse freely here
if (ourData.isEmpty() && editor.getEditableText().length() < prefillData.length())
{
Log.d(LOGTAG, "adding prefill, before = " + editor.getEditableText());
editor.setText("");
editor.append(prefillData);
Log.d(LOGTAG, "now is = " + editor.getEditableText());
}
}
} else
{
String text = (ourData.isEmpty()) ? hint : ourData;
ColorStateList color;
if (hintColor != null && ourData.isEmpty())
color = hintColor;
else
color = textColor;
face.setTextColor(color);
if (hasFocus)
{
SpannableString ss = new SpannableString(text);
ss.setSpan(new UnderlineSpan(), 0, text.length(), 0);
face.setText(ss);
} else
face.setText(text);
}
}
#Override
public boolean onHover(View v, MotionEvent event)
{
// Log.d(LOGTAG, "onHover()");
String text = (ourData.isEmpty()) ? hint : ourData;
ColorStateList color;
if (hintColor != null && ourData.isEmpty())
color = hintColor;
else
color = textColor;
face.setTextColor(color);
switch (event.getAction())
{
case MotionEvent.ACTION_HOVER_ENTER:
SpannableString ss = new SpannableString(text);
ss.setSpan(new UnderlineSpan(), 0, text.length(), 0);
face.setText(ss);
break;
case MotionEvent.ACTION_HOVER_EXIT:
face.setText(text);
break;
}
return true;
}
#Override
public boolean onLongClick(View v)
{
Log.d(LOGTAG, "onLongClick()\tinEditMode = " + inEditMode);
if (!inEditMode) //implies that getDisplayedChild() == 0, meaning the textview
{
setEditable(true);
return true;
} else
return false;
}
public void setEditable(boolean value)
{
Log.d(LOGTAG, "setEditable(" + value + ")");
inEditMode = value;
if (inEditMode)
{
//display the editorLayout
face.setOnLongClickListener(null);
face.setOnHoverListener(null);
face.setOnFocusChangeListener(null); //because of GC.
face.setOnClickListener(null);
face.setVisibility(View.GONE);
setDisplayedChild(1);
editorLayout.setVisibility(View.VISIBLE);
editor.setOnFocusChangeListener(this);
editor.setOnEditorActionListener(this);
cancel.setOnClickListener(this);
accept.setOnClickListener(this);
accept.setOnFocusChangeListener(this);
cancel.setOnFocusChangeListener(this);
} else
{
editor.setOnFocusChangeListener(null);
editor.setOnEditorActionListener(null);
cancel.setOnClickListener(null);
accept.setOnClickListener(null);
accept.setOnFocusChangeListener(null);
cancel.setOnFocusChangeListener(null);
editorLayout.setVisibility(View.GONE);
setDisplayedChild(0);
face.setVisibility(View.VISIBLE);
face.setOnLongClickListener(this);
face.setOnHoverListener(this);
face.setOnFocusChangeListener(this);
face.setOnClickListener(this);
face.setFocusable(true);
face.setFocusableInTouchMode(true);
}
updateViews();
}
#Override
public void setNextFocusDownId(int nextFocusDownId)
{
super.setNextFocusDownId(nextFocusDownId);
face.setNextFocusDownId(nextFocusDownId);
// editor.setNextFocusDownId(nextFocusDownId);
accept.setNextFocusDownId(nextFocusDownId);
cancel.setNextFocusDownId(nextFocusDownId);
}
#Override
public void setNextFocusForwardId(int nextFocusForwardId)
{
super.setNextFocusForwardId(nextFocusForwardId);
face.setNextFocusForwardId(nextFocusForwardId);
editor.setNextFocusForwardId(nextFocusForwardId);
}
#Override
public void setNextFocusLeftId(int nextFocusLeftId)
{
super.setNextFocusLeftId(nextFocusLeftId);
face.setNextFocusLeftId(nextFocusLeftId);
editor.setNextFocusLeftId(nextFocusLeftId);
}
#Override
public void setNextFocusRightId(int nextFocusRightId)
{
super.setNextFocusRightId(nextFocusRightId);
face.setNextFocusRightId(nextFocusRightId);
cancel.setNextFocusRightId(nextFocusRightId);
}
#Override
public void setNextFocusUpId(int nextFocusUpId)
{
super.setNextFocusUpId(nextFocusUpId);
face.setNextFocusUpId(nextFocusUpId);
// editor.setNextFocusUpId(nextFocusUpId);
accept.setNextFocusUpId(nextFocusUpId);
cancel.setNextFocusUpId(nextFocusUpId);
}
public void setPrefillData(String prefillData)
{
this.prefillData = new String(prefillData);
}
public String setTag()
{
return tag;
}
public void setText(String text)
{
Log.d(LOGTAG, "setText(" + text + ")");
ourData = text;
updateViews();
}
private void build(Context context)
{
Log.d(LOGTAG, "build()");
addView(View.inflate(context, R.layout.textboxondemand, null));
setFocusable(true);
setFocusableInTouchMode(true);
setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
setOnFocusChangeListener(this);
setOnLongClickListener(this);
face = (TextView) findViewById(R.id.TBOD_textview);
editorLayout = (RelativeLayout) findViewById(R.id.TBOD_layout);
editor = (EditText) findViewById(R.id.TBOD_edittext);
accept = (ImageButton) findViewById(R.id.TBOD_accept);
cancel = (ImageButton) findViewById(R.id.TBOD_cancel);
topGuard = (View) findViewById(R.id.TBOD_top);
btmGuard = (View) findViewById(R.id.TBOD_bottom);
face.setFocusable(true);
face.setFocusableInTouchMode(true);
face.setOnLongClickListener(this);
face.setOnHoverListener(this);
face.setOnFocusChangeListener(this);
face.setOnClickListener(this);
editor.setOnFocusChangeListener(this);
editor.setOnEditorActionListener(this);
editor.setHint(hint);
editor.setFocusable(true);
editor.setFocusableInTouchMode(true);
accept.setOnClickListener(this);
accept.setOnFocusChangeListener(this);
accept.setFocusable(true);
cancel.setFocusable(true);
cancel.setOnFocusChangeListener(this);
cancel.setOnClickListener(this);
topGuard.setFocusable(true);
topGuard.setOnFocusChangeListener(this);
btmGuard.setFocusable(true);
btmGuard.setOnFocusChangeListener(this);
editor.setNextFocusRightId(R.id.TBOD_accept);
editor.setNextFocusDownId(R.id.TBOD_bottom);
editor.setNextFocusUpId(R.id.TBOD_top);
accept.setNextFocusLeftId(R.id.TBOD_edittext);
accept.setNextFocusRightId(R.id.TBOD_cancel);
cancel.setNextFocusLeftId(R.id.TBOD_accept);
}
private void init(Context context, AttributeSet attrs)
{
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TextBoxOnDemand);
//Use a
Log.d(LOGTAG, "init()");
if (a == null) Log.d(LOGTAG, "Did you include 'xmlns:app=\"http://schemas.android.com/apk/res-auto\"' in your root layout?");
final int N = a.getIndexCount();
for (int i = 0; i < N; ++i)
{
int attr = a.getIndex(i);
switch (attr)
{
case R.styleable.TextBoxOnDemand_android_hint:
hint = new String(a.getString(attr));
editor.setHint(a.getString(attr));
break;
case R.styleable.TextBoxOnDemand_android_text:
ourData = new String(a.getString(attr));
break;
case R.styleable.TextBoxOnDemand_android_inputType:
int inputType = a.getInt(attr, -1);
if (inputType != -1) editor.setInputType(inputType);
break;
case R.styleable.TextBoxOnDemand_android_textColor:
textColor = a.getColorStateList(attr);
face.setTextColor(textColor);
break;
case R.styleable.TextBoxOnDemand_android_linksClickable:
face.setLinksClickable(a.getBoolean(attr, true));
break;
case R.styleable.TextBoxOnDemand_android_textColorHint:
hintColor = a.getColorStateList(attr);
break;
case R.styleable.TextBoxOnDemand_android_autoLink:
autoLinkMask = a.getInt(attr, 0);
face.setAutoLinkMask(autoLinkMask);
break;
default:
Log.d(LOGTAG, "Skipping attribute " + attr);
}
}
//Don't forget this
a.recycle();
}
private void updateViews()
{
Log.d(LOGTAG, "updateViews()");
// if (getDisplayedChild() == 0) //first child - textview
if (!inEditMode) //first child - textview
{
if (ourData.isEmpty())
{
if (hintColor != null) face.setTextColor(hintColor);
face.setText(hint);
} else
{
face.setTextColor(textColor);
face.setText(ourData);
}
face.setFocusable(true);
face.setFocusableInTouchMode(true);
face.setAutoLinkMask(autoLinkMask);
} else
{ //second child - edittext
editor.setFocusable(true);
editor.setFocusableInTouchMode(true);
if (ourData.startsWith(prefillData) || ourData.length() >= prefillData.length())
editor.setText("");
else
editor.setText(prefillData);
editor.append(ourData);
inputReady = false;
editor.requestFocus();
}
}
public void setAutoLinkMask(LinkifyEnum linkifyEnumConstant)
{
switch (linkifyEnumConstant)
{
case ALL:
autoLinkMask = Linkify.ALL;
break;
case EMAIL_ADDRESSES:
autoLinkMask = Linkify.EMAIL_ADDRESSES;
break;
case MAP_ADDRESSES:
autoLinkMask = Linkify.MAP_ADDRESSES;
break;
case PHONE_NUMBERS:
autoLinkMask = Linkify.PHONE_NUMBERS;
break;
case WEB_URLS:
autoLinkMask = Linkify.WEB_URLS;
break;
case NONE:
default:
autoLinkMask = 0;
break;
}
//set it now
face.setAutoLinkMask(autoLinkMask);
}
public enum LinkifyEnum
{
ALL, EMAIL_ADDRESSES, MAP_ADDRESSES, PHONE_NUMBERS, WEB_URLS, NONE
};
}
I'm still working out some focus-related issues but this works as intended. When I use onFocuslistener 1, you can't focus from one TextBox to the other; when the textbox itself is focusable, I can focus from one to the other just fine, but I cannot inter-focus thru children and thus can't focus on the edittext to type.
the XML file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/TBOD_textview"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:autoLink="email"
android:focusable="true"
android:focusableInTouchMode="true"
android:linksClickable="true"
android:textAppearance="?android:attr/textAppearanceMedium" />
<RelativeLayout
android:id="#+id/TBOD_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<EditText
android:id="#+id/TBOD_edittext"
android:layout_width="300dp"
android:layout_height="30dp"
android:layout_below="#+id/TBOD_textview"
android:focusable="true"
android:focusableInTouchMode="true"
android:imeOptions="actionDone"
android:inputType="none"
android:maxLines="1"
android:padding="2dp"
android:singleLine="true"
android:textColor="#android:color/black"
android:textSize="14dp" />
<ImageButton
android:id="#+id/TBOD_accept"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/TBOD_edittext"
android:layout_marginLeft="15dp"
android:layout_toRightOf="#+id/TBOD_edittext"
android:background="#drawable/button_accept_selector" />
<ImageButton
android:id="#+id/TBOD_cancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/TBOD_edittext"
android:layout_marginLeft="5dp"
android:layout_toRightOf="#+id/TBOD_accept"
android:background="#drawable/button_cancel_selector" />
<View
android:id="#+id/TBOD_top"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_alignParentTop="true"
android:background="#android:color/transparent" />
<View
android:id="#+id/TBOD_bottom"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_alignParentBottom="true"
android:background="#android:color/transparent" />
</RelativeLayout>
</RelativeLayout>
and finally, the attrs.xml file:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="TextBoxOnDemand">
<attr name="android:text" />
<attr name="android:inputType" />
<attr name="android:hint" />
<attr name="android:textColor" />
<attr name="android:textColorHint" />
<attr name="android:linksClickable" />
<attr name="android:autoLink" />
</declare-styleable>
</resources>
This is how I used it in my main xml (after including the required namespace add):
<com.shark.widget.TextBoxOnDemand
android:id="#+id/profile_email2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/profile_skypename"
android:layout_below="#+id/profile_email_placeholder"
android:hint="#string/add_email"
android:inputType="textEmailAddress"
android:textColor="#android:color/white"
android:textColorHint="#color/skype_blue" />
EDIT: I've debugged the focus issues. It turns out that giving focus to children is difficult unless you call
setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
Which kinda remedies the issue but still doesn't solve it. After some while of playing around with the onFocusChange() listener still trying to get the perfect behaviour, I threw in the towel and put in added two focus guards. I realized I cannot track the loss of focus only on my container (due to it never receiving focus) but I might as well track the idea of wanting to move away from the edit field... So i went the dirty route and added two invisible bar-like views to sandwitch the edittext in between. Once they got the focus, I could hide the component and ensure they transition properly.
And there it is, now it works as it should. Thanks to all who participated.
EDIT3: final polished version, i dumped the custom tags because they simply don't work reliably enough. Lesson to be learned: if there is an android tag for something, don't bother cloning it.