How to create radio button in radioGroup in file layout without knowing exactly count
Dose anyone has any ideas?
I request you to say thing clearly,but as i got ,you want many number of radio Button,
Take a loop and create dynamic RadioButton add these button to Radio Group
May be this is of any help;
public class RadDemoActivity extends Activity {
private RadioGroup radGroup;
private Button addButton;
private RadioButton radButton;
private static int no;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
no=0;
doInflateItems();
setAddButton();
}
private void doInflateItems() {
radGroup = (RadioGroup) findViewById(R.id.radGroup);
addButton = (Button) findViewById(R.id.addRad);
}
private void setAddButton() {
addButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
radButton = new RadioButton(getApplicationContext());
radButton.setText("Option " + no++);
radGroup.addView(radButton);
}
});
}
}
XML layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:id="#+id/addRad" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:text="Add" />
<ScrollView android:id="#+id/vScroll" android:layout_width="fill_parent"
android:layout_height="wrap_content">
<RadioGroup android:id="#+id/radGroup"
android:layout_width="wrap_content" android:layout_height="wrap_content" />
</ScrollView>
</LinearLayout>
This code is adding radio buttons from a button click, you can do the same from a loop if you want to add multiple buttons at once. Hope this helps.
Related
I'm trying to make a simple game that select a value from item of Gridview. But i want that value just can clickable after press Play Button.We can't click in anywhere if did not press Play Button. How can i do that?
What you can do is to change the clickable property of your grid view
and then in the button click listener just set the clickable property to true
so your code should look like the following:
let's assume that this is your view:
<?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:orientation="vertical">
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="50dp" />
<GridView
android:id="#+id/grid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="false" />
</LinearLayout>
your activity should contain the following code:
public class MainActivity extends AppCompatActivity {
private Button mButton;
private GridView mGridView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGridView = (GridView) findViewById(R.id.grid);
mButton = (Button) findViewById(R.id.button);
// if you want to do it with setEnable
mGridView.setEnabled(false);
mButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mGridView.setClickable(true);
// if you want to toggle then you can use the following code:
// mGridView.setClickable(!mGridView.isClickable());
// you can also change the setEnable property and not the clickable
mGridView.setEnabled(true);
}
});
}
}
Hello this is my xml file
<RelativeLayout
android:id="#+id/tutorialBox"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="15dip"
android:paddingBottom="15dip">
<Button
android:id="#+id/closeBen"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="#string/CloseBenny"
android:layout_alignBottom="#+id/bennybox"
android:layout_alignEnd="#+id/chatbub" />
</RelativeLayout>
i have made an on click listener for it
final Button closeBt = (Button) findViewById(R.id.closeBen);
closeBt.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
closeBt.setText("Im a button");
}
});
for some reason when i click this button nothing happens it doesnt look like it has been clicked.
when i took the button out of the realtive layout everything worked fine
any suggestions?
Instead of this add onClick attribute to the button tag in xml.
<Button
android:id="#+id/closeBen"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="#string/CloseBenny"
android:onClick = "close_clicked"
android:layout_alignBottom="#+id/bennybox"
android:layout_alignEnd="#+id/chatbub" />
Then in Main Activity just make a new method like this.
public void close_clicked (View v){
// Your code
}
No need to add on click listner.
Your RelativeLayout does not look good, is it your main container? Maybe try it this way
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<Button
android:id="#+id/closeBen"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="#string/CloseBenny"
android:layout_alignBottom="#+id/bennybox"
android:layout_alignEnd="#+id/chatbub" />
</RelativeLayout>
And a good practice is to declare your widgets globally then instantiate them in theOnCreate
public class Foo extends AppCompatActivity {
private Button closeBenny;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
closeBenny = (Button)findViewById(R.id.closeBen);
closeBenny.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
closeBenny.setText("Im a button");
}
});
}
}
i am basically developing a small mathematics app, in a activity their will be problems like additions subtractions etc. the user has to fill the answers in edittext from the custom buttons from 0-9, a dot, a slash button and a backspace button which i created on the same activity. now i like to add up and down button, so that when the up button is pressed the cursor has to move towards upside edit text and vice versa.
here is a sample code which i used
XML:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<EditText
android:id="#android:id/et1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Some string of text"
/>
<EditText
android:id="#android:id/et2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Some string of text"
/>
<Button
android:id="#android:id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button"
/>
</LinearLayout>
Class:
public class Example extends Activity {
TextView et1;
TextView et2;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
et1 = (EditText) findViewById(android.R.id.et1);
et2 = (EditText) findViewById(android.R.id.et2);
Button button = (Button) findViewById(android.R.id.button1);
button.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
Selection.setSelection((Editable) et2.getText(), et1.getSelectionStart());
et2.requestFocus();
}
});
}
}
You could create an array of of your EditTexts and a variable containing your current position, defaulted to 0, meaning the first text box. Then if the user presses the up button, if the variable is greater than 0, set the position -1 and then get the textbox object from the array and call focus(). Below is an example piece of code, its not accurate but should get you started
List<EditText> textfields = null;
int currentTextFieldPosition = 0;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
textfields = new ArrayList<EditText>();
textfield1 = (EditText)findViewById(R.id.textfield1);
.....
textfields.add(textfield1);
......
}
protected OnClickListener mBtnUpClickListener = new OnClickListener()
{
public boolean onClick()
{
if (currentTextfieldPosition > 0)
{
currentTextfieldPosition--;
textfields.get(currentTextFieldPosition).focus()
}
}
}
I want to create an activity such as mentioned in photo...
as soon as I press the maximize button I want it to become full screen for the activity and part 1 become minimize, and again when I press the restore button I want it to become in a first state: to be able to see part 1 and part 2 ...
I think if we put two layouts it is possible? Isn't it? Please refer me to a resource to help me about this, or show me the code to achieve a solution.
Part one and two should be in their own layout. After, play with the visilibity property of each layout. Specifically to hide any view without it continues to occupy its space, use the value gone for the visibility property.
Ok, here I go. Below you have a complete example of how to hide/show grouped views.
main.xml
<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" >
<LinearLayout
android:id="#+id/viewsContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="TextBox One" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:text="TextBox Two" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:text="TextBox Three" />
</LinearLayout>
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="Hide" />
</RelativeLayout>
Activity
public class MyActivity extends Activity implements OnClickListener {
private boolean viewGroupIsVisible = true;
private View mViewGroup;
private Button mButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mViewGroup = findViewById(R.id.viewsContainer);
mButton = findViewById(R.id.button);
mButton.setOnClickListener(this);
}
#Override
public void onClick(View button) {
if (viewGroupIsVisible) {
mViewGroup.setVisibility(View.GONE);
mButton.setText("Show");
} else {
mViewGroup.setVisibility(View.VISIBLE);
mButton.setText("Hide");
}
viewGroupIsVisible = !viewGroupIsVisible;
}
I hope this helps ;)
There is a bit simplified solution, than Diego Palomar produced, without using additional variable. I'll take his code to show:
public class MyActivity extends Activity implements OnClickListener {
private View mViewGroup;
private Button mButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mViewGroup = findViewById(R.id.viewsContainer);
mButton = findViewById(R.id.button);
mButton.setOnClickListener(this);
}
#Override
public void onClick(View button) {
if (mViewGroup.getVisibility() == View.VISIBLE) {
mViewGroup.setVisibility(View.GONE);
mButton.setText("Show");
} else {
mViewGroup.setVisibility(View.VISIBLE);
mButton.setText("Hide");
}
}
Am quite new to Android programming and hope someone can help me out in this:
1. I am coding from one of the demos here:
http://developer.android.com/training/animation/screen-slide.html
I have a main activity_screen_slide.xml file:
<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
In another xml file, main.xml, I have a few buttons.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/Main"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<Button
android:id="#+id/buttonStart"
android:text="test"/>
</LinearLayout>
Within the main java activity file, the context is set as following:
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_screen_slide);
When I tried to set a listener for testButton, am unable to do so. This means that when the button is generated subsequently (through an inflator in another java file), there is no response when I click the button.
The java file to generate the inflator is simply:
ViewGroup rootView;
rootView = (ViewGroup) inflater.inflate(R.layout.main, container, false);
Thank you and appreciate your help
Cheers
D
I assume your button is defined in your xml layout activity_screen_slide.xml similar to this:
<Button
android:id="#+id/myButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
In your Activity you can add a ClickListener like this:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button myButton = (Button) findViewById(R.id.myButton);
myButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.i("", "I've been clicked");
}
});
}
Try this:
public class Settings extends Activity implements View.OnClickListener {
public void onCreate(Bundle savedInstanceState) {
//...ALL THE OTHER CODE..\\
Button button = (Button) findViewById(R.id.YOUR_BUTTON_ID);
button.setOnClickListener(this);
}
#Override
public void onClick(View view) {
switch (view.getId()){
case R.id.YOUR_BUTTON_ID: {
ALPHA.YourFunction(parameters);
}
}
}
}