I have a button which currently has an animation assigned to it on click:
Button btn = (Button)findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
v.startAnimation(animRotate);
}
});
Here is an example of the button in XML:
<Button
android:id="#+id/btn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:text="#string/btnText"
android:textColor="#ffffff"
android:textSize="18dp"
android:padding="12dp"
android:drawableTop="#drawable/btnIcon"
android:layout_weight="1" />
The animation works spot on, however on the button itself there is a text value and a drawable value, and I would like to be able to target the drawable and animate that only. I have searched all over the net and everything appears to be targeting objects by their id without any background/drawable selection.
Any feedback is welcome, even if its just to inform me that it can't be done.
Many thanks.
You may want to create a FrameLayout with the TextView and the Button and animate only the Button.
Related
I'm having problems with RadioGroups clearCheck method and rotating my app. I think it might be a Google issue?
I have a three button radio group that when launched has the first item selected by default in xml.
My problem is, I have a button that calls radio groups clearCheck(). If you rotate the app, and then try to press the first radio group item, it will not select it. It tries, it shows the animation, but it remains unselected.
I thought I was going crazy and it was something wrong in my code, but I've broken it down to the most simplistic app possible by just making a new app.
If I don't preselect Button A (via XML or code) then it works correctly, but I need this button pre-selected.
Any idea how I can work around this problem and have A selected by default?
Repo steps
Launch app
Select Radio Button B
Press Clear Check
Rotate App
Press Radio Button A
Result: Radio A won't select. If you then press B or C you can once again press A, but not until then.
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final RadioGroup radioGroup = (RadioGroup) findViewById(R.id.radioGroup);
Button clearButton = (Button) findViewById(R.id.clearButton);
clearButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
radioGroup.clearCheck();
}
});
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".MainActivity">
<RadioGroup
android:id="#+id/radioGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:gravity="center"
android:checkedButton="#+id/radioButtonA"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radioButtonA"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="A" />
<RadioButton
android:id="#+id/radioButtonB"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="B" />
<RadioButton
android:id="#+id/radioButtonC"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="C" />
</RadioGroup>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Clear"
android:id="#+id/clearButton"
android:layout_below="#+id/searchRadioGroup"
android:layout_centerHorizontal="true"
android:layout_marginTop="114dp" />
</RelativeLayout>
Upon rotation, the checked id is reset due to android:checkedButton="#+id/radioButtonA".
If there was a button checked, CompoundButton's onRestoreInstanceState resets the checked button again to the correct checked button.
Contrarily, if there was no button checked, buttonA's onRestoreInstanceState will reset it to unchecked. RadioGroup is not handling this scenario because it is not designed to handle unchecks.
So, we end up with RadioGroup tracking buttonA as checked and buttonA tracking itself as unchecked. When you click on buttonA, the check is processed, however the UI does not update due to shortcircuit logic in the check() method because it assumes that since the id already matches the mCheckedId it has on hand, the button should already be checked:
// don't even bother
if (id != -1 && (id == mCheckedId)) {
return;
}
I guess this could be considered a bug, but it ultimately comes down to some strange design choices on your part. You are setting it to default to buttonA, which means that the user cannot uncheck any button under normal circumstances and then you provide a clear button to get them to a non-default state that they could not reach under normal circumstances. So, there are two possible solutions that would bring your UI design choices in to focus:
1) If you want there to always be a checked button, have the reset button reset to default state.
clearButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mRadioGroup.check(R.id.radioButtonA);
}
});
2) If you want there to possibly be no checked button, don't default to anything.
I had this problem in my App .
I cheated . I created a new radio buttom and I selected gone its visibility .
after that , I put setcheked=(true).
I have a button
<Button
android:layout_above="#id/choice2"
android:layout_centerHorizontal="true"
android:textColor="#FFFF00"
android:textSize="25sp"
android:gravity="center"
android:background="#drawable/loginbutton"
android:layout_height="30dp"
android:layout_width="fill_parent"
android:layout_marginBottom="15dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:text="#string/q1a1"
android:id="#+id/choice1">
</Button>
and when you press this button, it adds 10 to a counter/score keeper. How do I make this button able to be pressed once, but then not pressable again after that? Users are able to cheat and press the button multiple times to add more to there score.
in your onCreate method, do it like this:
final Button choice1 = (Button) findViewById(R.id.choice1);
choice1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
choice1.setEnabled(false);
}
});
You can either hide or disable it
Button mybutton;
mybutton.setVisibility(View.GONE); // hide it
mybutton.setClickable(false); // disable the ability to click it
Disable the button when it is pressed (in the code that is also handling the 'normal' action of the button).
Trying to get an onclick listener working on a linearlayout but its never called :(. Have enabled clickable and focsuable (both modes) and still cant get the click listener to respond. Platform details: Android 3.0.. Any help?? Code below
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/menu_items_button"
android:layout_width="0dip"
android:layout_height="fill_parent"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="center_horizontal"
android:paddingTop="#dimen/gen_margin_xsmall"
android:paddingBottom="#dimen/gen_margin_xsmall"
android:background="#drawable/rule_bg_menu_button"
android:clickable="true"
android:focusableInTouchMode="true"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/menu_items"
android:tag="image"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:tag="text"
android:text="#string/menu_items_icon_txt"
style="#style/textDisplay.mediumLarge"
/>
</LinearLayout>
and in the code to add the event listener
_itemsButton = (LinearLayout) menu.findViewById(R.id.menu_items_button);
final Intent itemsIntent = new Intent(this, ItemsActivity.class);
_itemsButton.setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(itemsIntent); //Never called!
}
}
);
The reason I'm doing this and not using an Image button instead is because the background of the "button" is state based (gradient changes) but also the image and in order to combine to the two on click / on focus, I used a linearlayout which has an ImageView in itself.. any suggestions on why the clickListener is not working on the linearLayout?
thx
Did the click go to the ImageView instead of the LinearLayout? Try clicking in the pad area (if any) or try putting the click listenner on the ImageView1.
(adding my response as a new answer so that I can use the PRE tag.)
The easy way is to set the same click listener on the image view and the text view.
View.OnClickListener activityLauncher = new View.OnClickListener() {... }
layout.setOnClickListener(activityLauncher);
imageView.setOnClickListener(activityLauncher);
textView.imageView.setOnClickListener(activityLauncher);
The width of your LinearLayout is set to "0dip", you should see nothing on the screen.
If the width is changed to "FULL_PARENT", that works. Please check your code carefully again.
Is there any way to add the x-graphics in the android Editbox like the of iPhone
So that by clicking on that x graphic it can clear all the values in the Editbox
Is there any way to listen weather i touch a specific part of an edit text
Thank you
Yes there is a way to achieve this.
Define a RelativeLayout like this one.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<EditText android:id="#+id/edittext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/hello"/>
<ImageButton android:id="#+id/clear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon"
android:layout_alignRight="#id/edittext"/>
</RelativeLayout>
Now what happens. The ImageButton gets drawn on top of the EditText. We set its right edge to be equal to the right edge of the EditTexts in order to get it appear on the right side.
Now you have to assign your ImageButton an OnCLickListener with if overridden method to just set the EditTexts text to a empty string like that.
EditText editText = null;
ImageButton clear = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.clear);
editText = (EditText) findViewById(R.id.edittext);
clear = (ImageButton) findViewById(R.id.clear);
clear.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
editText.setText("");
}
});
}
Now here we simply tell our ImageViews OnClickListener to reset our EditTexts text upon a click. Simple as that. ;)
Of course my example uses not very aesthetic images but you can fine tune the images yourself. The principle works.
You can download it, it works like iPhone
https://github.com/GhOsTTT/editTextXbutton
I m a novice in android.. i want to add a button or menu item in message inbox or email. how can i do so.
i want to add a button or menu item in
message inbox or email
If you mean you want to add a button or menu item to somebody else's application (Email, Gmail, Messaging, etc.), you can't -- sorry!
Well this is a very broad question because there are many ways to add a button, and it really just depends on where you would like it to appear on the screen, and when. But suppose you wanted a button at the bottom of the screen that was always there, you might do something like this:
In your layout xml you will do something like this:
?xml...
<LinearLayout ...
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:orientation="vertical" >
.... other layout items (lists, images, ext) ....
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orienation="horizontal" >
<Button
android:layout_height="wrap_content" <!--the button is only as tall as it needs to be -->
android:layout_width="fill_parent"
android:layout_weight="1" <!-- when width is "fill parent" and weight is "1" the element will share equal space with other elements with weight "1" -->
android:text="Ok"
android:id="#-id/ok_button" ></Button>
<Button
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
android:text="Cancel"
android:id="#-id/cancel_button" ></Button>
</LinearLayout>
</LinearLayout>
Then, in onCreate() in your activity, you will need to make objects associated with the buttons, and define their behavior
Button okButton = (Button) findViewById(R.id.ok_button);
Button cancelButton = (Button) findViewById(R.id.cancel_button;
okButton.setOnClickListener(new onClickListener() {
public void onClick()
{
//do something
}
});
cancelButton.setOnClickListener(new onClickListener() {
public void onClick()
{
//do something
}
});
I hope this helps you out