Develop Reference

How to add OnClickListener for disabled spinner in android?

I have a spinner in android and disabled it using,
Spinner SPMenuItem = (Spinner) findViewById(R.id.SPMenuItem);
SPMenuItem.setAlpha(0.7f);
SPMenuItem.setEnabled(false);
I want to display the following toast message on click of this disabled spinner.
SPMenuItem.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getActivity(),"This is a readonly field",Toast.LENGTH_SHORT).show();
}
});
But I get the following exception on load,
I just want to display toast message to indicate the spinner is disabled. How can I achieve this ?

Expand/open a spinner on click of another item/widget?

I am trying to expand a Spinner when user click on another Button. as example : I have a Spinner with values and a 'OK' button when user click on 'ok' buttton without selecting any value from spinner, Spinner expands itself.
Is this possible to get a event to expand spinner without user interaction on spinner.

Just call Spinner.performClick() to expand Spinner without user interaction...
final Spinner spinner = (Spinner) findViewById(R.id.spinner);
Button okButton = (Button) findViewById(R.id.yesButton);
okButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(spinner.getSelectedItem() == null) { // user selected nothing...
spinner.performClick();
}
}
});

Put in your view.onClick
YourSpinner.PerformClick();

clearColorFilter() don't work on android 2.3

i'm using setColorFilter to color some button... the code is this:
final Button falso = (Button) findViewById(R.id.falso);
final Button vero = (Button) findViewById(R.id.vero);
vero.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
vero.getBackground().setColorFilter(new LightingColorFilter(0x00000000, 0x00FF0FF));
falso.getBackground().clearColorFilter();
esame.set("V");
}
});
falso.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
falso.getBackground().setColorFilter(new LightingColorFilter(0x00000000, 0x00FF0FF));
vero.getBackground().clearColorFilter();
esame.set("F");
}
});
when i click the button "vero" i want reset the colour of "falso" and viceversa.
i tried this code on android ics and all work good, but when i tried it on android 2.3 i have a bad surprise.
when i click the button the colour don't reset and i don't understand why.

i find the solution:
use button.invalidate();
after i clear background

Setting the ColorFilter to 0 will do thee job by clearing the filter.
vero.setInt(vero.getBackground(), "setColorFilter", 0);

How do I select all text when clicking on a EditText view?

so I tried android:selectAllOnFocus and of course I'm using android:hint.
The app loads, requestFocus triggers and the full text is selected.
The problem is that when I click in the EditText the selection is lost.
I've already read:
Select all text inside EditText when it gets focus

For some reason, it worked (on Jelly Bean) only if I posted it with a Handler:
new Handler().post(new Runnable() {
#Override
public void run() {
paidView.selectAll();
}
});

Set the selection in an View.OnClickListener like so:
editText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
editText.setSelection(0, editText.getText().length() - 1);
}
}

Set the selection in an View.OnClickListener like so: (with the 0 and text length opposite to the previously approved response) - this will ensure that when the user starts typing the content will be overridden.
editText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
editText.setSelection(editText.getText().length() - 1, 0);
}
}

I realize this is an old post, but I had this same problem. For me, the reasoning was that I like to move the keyboard out of the way (dismiss it) to get my bearings (or hit buttons to add or remove rows of data) and when i touched back on the EditText I was previously editing, it was annoying to have the keyboard pop back up and the text un-select, forcing me to either work to get the cursor to where I wanted to start deleting, or touch another EditText and then touch back on the original to re-select everything. I just want to have the keyboard pop back up and have the text selected and ready to overwrite whenever I go to that EditText.
There are easy solutions to this:
1) Long tap does this for you on most occasions.
2) If you're already using setSelectAllOnFocus(true), you can just throw a simple clearFocus() and requestFocus() in your onClick listener:
etMyEditText.setSelectAllOnFocus(true);
etMyEditText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
view.clearFocus();
view.requestFocus();
}
});
This way the EditText has everything selected when you tap on it, regardless of soft keyboard status.
Additional bonus:
Add android:windowSoftInputMode="adjustPan" inside your <activity .../> tag in your AndroidManifest.xml file to force the selected EditText to stay in sight when the soft keyboard pops up.

try This
editText.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
editText.selectAll();
//or this.selectAll();
}
To select all the text.

Do the code below after you did findViewById and you are good to go:
edtProductPrice.setSelectAllOnFocus(true);
edtProductPrice.requestFocus();
edtProductPrice.selectAll();

Android: How to only hear when my custom class is clicked

when I make a custom view class and add a clickListener it fires anywhere on the screen I click, even where the custom view is not. If I use the same code with a button from a layout it only fires when I click the button not anywhere on screen. Any ideas how to just only listen for when my custom class is directly clicked?
button only fire when pressed
Button b = (Button) findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.d(DEBUG_TAG, "button clicked");
}
});
stroke object fires when you press anywhere on screen, even outside of stroke's bounding box
Stroke stroke = new Stroke(this);
mainLayout.addView(stroke);
stroke.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// fires on every screen click :>(
Log.d(Main.DEBUG_TAG, this.toString()+"shape clicked");
}
});

I think your custom view just fills the whole screen. That's why it reacts on every click on the screen. You need to make it smaller and everything will work fine.