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if the button is selected to change the text size

Such must be fair, that when selecting a button to change the text size?
I tried to add in a onCreate if but not work correctly, is cheek only one time to start the application. The function not remains active for next time.
Thank you
button
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/inbox_string"
android:id="#+id/button"
android:textColor="#drawable/text_button_culoare"
android:drawableLeft="#drawable/ic_view_list_white_24dp"
android:background="#android:color/transparent"
style="?android:attr/borderlessButtonStyle"
android:layout_centerHorizontal="true"
android:gravity="left|center_vertical"
android:layout_gravity="center_horizontal"
android:focusable="true"
android:enabled="true"
android:clickable="true"
android:contextClickable="true"
android:elegantTextHeight="true"
android:layout_marginTop="16dp" />
Activity:
public class Work_screen extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_work_screen);
View.OnClickListener clickListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
if (v.getId() == R.id.button) {
}
}
};
findViewById(R.id.button).setOnClickListener(clickListener);
final Button button = (Button) findViewById(R.id.button);
if (button.isSelected()) {
Context context = getApplicationContext();
CharSequence text = "selected";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
button.setTextSize(22);
} else {
Context context = getApplicationContext();
CharSequence text = "not";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
}
}

You should place some code in your onClick method, because this method is called when you click on that button. The reason why your code is just called the first time is that the ONCREATE method is just called once at the creation of your application.
Just place your if else statement in your onClick method and it should work.
And you should create your button variable as a class variable to access it in your listener even if it's not part of your onCreate method.

Android dialog with TextView As link

Hi guys I have a problem regarding the android dialog box.What I am trying to do is set few lines of description in a dialog box which I am able to do it fine but at last i need a link called "see more" which will redirect the user to other activity.I am very new to android and these is the first of some things what I am trying to do any help will be appreciated..my code onStart()
protected void onStart()
{
super.onStart();
/*final Dialog dialog = new Dialog(this);
dialog.setContentView(R.layout.main);
dialog.setTitle("About Service One");
Button button = (Button) dialog.findViewById(R.id.button12);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
dialog.dismiss();
}
});
dialog.show();

protected void onStart()
{
super.onStart();
final Dialog dialog = new Dialog(this);
dialog.setContentView(R.layout.main);
dialog.setTitle("About Service One");
Button button = (Button) dialog.findViewById(R.id.button12);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
dialog.dismiss();
}
});
TextView showMore= (TextView ) dialog.findViewById(R.id.tvShowMore);
showMore.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
Intent intent=new Intent(getApplicationContext(),ShowMoreActivity.class);
startActivity(intent);
}
});
dialog.show();
}
And add in xml showmore TextView Which set text from string.xml
i.e <string name="show_more"><u>Show More </u></string> use this for set linkable text
main.xml
...........
<TextView
android:id="#+id/tvShowMore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/show_more"
android:textAppearance="?android:attr/textAppearanceMedium"
>
</TextView>
............

Create a custom Dialod layout>> create a text view as show more >> set OnClick Listener on it as ..
You can set the click handler in xml with these attribute:
android:onClick="onClick"
android:clickable="true"
Don't forget the clickable attribute, without it, the click handler isn't called.
dailog.xml
...
<TextView
android:id="#+id/click"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="show more"
android:textSize="55sp"
android:onClick="onClick"
android:clickable="true"/>
...
MyActivity.java
public class MyActivity extends Activity {
public void onClick(View v) {
// ... start show more activity here
}
}
OR... find the view using dialog and set OnClick Listener on it..
showmore = (TextView)dialog.findViewById(R.id.click);
showmore..setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// ... start show more activity here
}
});

Try this:
<TextView
android:id="#+id/yourId"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show more"
android:onClick="showMore"
android:clickable="true"/>
Inside your activity, get that textView :
TextView showMoreView=(TextView)findViewById(R.id.yourId);
Add this showMoreView inside your text in the dialog and
Inside your activity, define the methode "showMore"
public void showMore(View view)
{
Intent intent =new Intent(YourCurrrentActivity.this,NextActivity.class);
startActivity(intent);
}
This will take you to NextActivity on clicking the "show more" text.

How can I change color of button's background

I have many buttons in my calculator app. I am testing with only one button to start, that buttons id is "one" and should change colour when I click the blue theme button. I have tried following methods:
blueTheme = (Button) findViewById(R.id.blueTheme);
blueTheme.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
one.setBackgroundColor(Color.argb(175, 144, 202, 249));
one.setBackgroundColor(Color.parseColor(/*hex code here*/));
one.setBackgroundColor(Color.BLUE);
}
});
Nothing seems to do anything. I am trying to change the colour of the button in one activity via an option in another activity. Here's actual button one:
one = (Button) findViewById(R.id.one);
one.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
result.append("1");
}
});
xml code of one in activity_main.xml:
<Button android:id="#+id/one"
android:layout_width="wrap_content"
android:layout_height="100dp"
android:layout_weight="1"
android:background="#CCCCCC"
android:text="1"
android:textColor="#FF6600"
android:textSize="50sp"
android:layout_marginRight="1dp"
android:layout_marginTop="1dp"
android:layout_marginBottom="1dp" />
Idea is that there will be a option in another intent where I can change colors of calculator, but testing on one button fails, can't proceed. Thank you for your time.

The problem is the click from one activity cant get through to the other activity unless you pass it over.
In the activity with the blue theme button
blueTheme.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//NOTE: Where I've put MainActivity that should actually be the name
// of whatever activity this code is nested in
Intent intent = new Intent(MainActivity.this, OtherActivity.class); //use your real class name
intent.putExtra(OtherActivity.EXTRA_COLOR, Color.BLUE);
startActivity(intent);
}
});
In your OtherActivity.class
public class OtherActivity extends Activity {
public static String EXTRA_COLOR = "EXTRA_COLOR";
public void onCreate(...) {
View one = (Button) findViewById(R.id.one);
//NOTE: if you add singleTop to this activity in the manifest
// you might need to do this on onNewIntent
Intent intent = getIntent();
if (intent.hasExtra(EXTRA_COLOR)) {
int color = intent.getIntExtra(EXTRA_COLOR, Color.WHITE);
one.setBackgroundColor(color);
}
}
}

Use this :
// If you're in an activity:
yourButton.setBackgroundColor(getResources().getColor(R.color.red));
// OR, if you're not:
yourButton.setBackgroundColor(yourButton.getContext().getResources().getColor(R.color.red));

If you want to set background color without using a pre-defined color resource, do it like so
one.setBackgroundColor(0xFFFF0000); // Red
one.setBackgroundColor(0xFF00FF00); // Green
Here, 0xFF00FF00 is equivalent to #ff00ff00 (#aarrggbb)

how to set on click method for text inside dialog

I have dialog contain TextView. Inside the TextView I have number so i want to set onClick method for the TextView and I want to use call method to call the number inside the TextView
Inside the dialog xml file i set the textview as below
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#2d76ba"
android:layout_toRightOf="#+id/image"
android:onClick="no1"
android:clickable="true"/>
and here is my dialog
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.pop); // pop is my dialog xml
dialog.setTitle("Phone Call");
TextView text = (TextView) dialog.findViewById(R.id.text1);
text.setText(values[0]); /// I'm calling the number from array
public void no1(View v)
{
Intent dial = new Intent();
dial.setAction("android.intent.action.DIAL");
dial.setData(Uri.parse("tel:"+values[0]));
startActivity(dial);
}
but the onClick method (no1) is wrong it says "void is an invalid type for the variable no1"
how can i correct the method to work inside the dialog ?
I tried to make it outside the dialog but when i click the textview the logcat says
11-04 13:39:48.666: E/AndroidRuntime(26249): java.lang.IllegalStateException: Could not find a method no1(View) in the activity class android.view.ContextThemeWrapper for onClick handler on view class android.widget.TextView with id 'text1'
so it looks like the function is not available

final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.pop); // pop is my dialog xml
dialog.setTitle("Phone Call");
TextView text = (TextView) dialog.findViewById(R.id.text1);
text.setText(values[0]);
text.setOnClickListener(new View.OnClickListener()
{
public void onClick(View view)
{
Intent dial = new Intent();
dial.setAction("android.intent.action.DIAL");
dial.setData(Uri.parse("tel:"+Global.values[0]));
startActivity(dial);
}
});

How possibly change widget in not parent activity

When i clicking on button i need change activity and text in TextView which belong this activity, i try do it like this:
in MyActivity:
public void onClick(View v) {
switch (v.getId()) {
case R.id.MondayButton:
NameDiscipline = (TextView) findViewById(R.id.Discipline8);
NameDiscipline.setText("Some Text");
Intent intent = new Intent(this, SheduleForTheDayActivity.class);
startActivity(intent);
break;
default:
break;
}
in OtherActivity.xml:
<TextView
android:id="#+id/Discipline8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
and when i click on MondayButton my app crashing. Without lines
NameDiscipline = (TextView) findViewById(R.id.Discipline8);
NameDiscipline.setText("Some Text");
code work correctly.

What you want is a BroadcastReceiver in the Activity class with Discipline8. Have the onReceive method change the text. Then, in MyActivity, call
LocalBroadcastManager.getInstance(this)
.sendBroadcast(new IntentFilter("some string to use as action"));