I currently have a SurfaceView (named BoardView) that is being stored in a FrameLayout. There is another LinearLayout (l1) that is stored in this FrameLayout(f1) which contains an EditText. I want to be able to bring the EditText to the front from within my BoardView. Is this possible? I tried using getParent().bringChildToFront(); but it didn't work. Any ideas?
public class Board extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
//use a frame layout so you can also display a dialog box
// allows more than one view to be used
FrameLayout f1 = new FrameLayout(this);
LinearLayout l1 = new LinearLayout(this);
EditText edit = new EditText(this);
l1.setOrientation(LinearLayout.VERTICAL);
l1.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
edit.setText("Enter your name!");
l1.addView(edit);
f1.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
f1.addView(l1);
f1.addView(new BoardView(this));
setContentView(f1);
//setContentView(new BoardView(this));
}
}
Sounds rather silly, but try l1.bringToFront() and see if that works? Alternatively just add l1 second:
f1.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
f1.addView(new BoardView(this));
f1.addView(l1);
and the edit text will be on top.
Let me know if it works.
Related
The app I am trying to make, has got a lot of similar LinearLayouts and textViews that need to be created programmatically and placed on the screen in a specific order.
So I decided to define a method which returns one element, and for the furthur uses,I will put the method in some loop to produce the others. but when I create a view or layout this way, nothing shows up or sometimes the app crashes, as if it's been sent null to addView(). It only works when I create the View/Layout in onCreate() and then I use it right there afterwards.So , any ideas that I can use the method to creat my Layout/View? Because they are too many and it's not possible to create them one by one in onCreate()
Here's the method:
public LinearLayout createLinearLayout(){
TextView tv_day = new TextView(this);
tv_day.setWidth(LinearLayout.LayoutParams.MATCH_PARENT);
tv_day.setHeight(LinearLayout.LayoutParams.WRAP_CONTENT);
tv_day.setGravity(Gravity.END);
tv_day.setText("27");
LinearLayout ll_horizontal = new LinearLayout(getBaseContext());
LinearLayout.LayoutParams ll_horizontal_params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT);
ll_horizontal.setLayoutParams(ll_horizontal_params);
ll_horizontal.setOrientation(LinearLayout.HORIZONTAL);
ll_horizontal.addView(tv_day);
return ll_horizontal;
}
and this is onCreate() which doesn't add any linear layouts with a textView in it :
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_month_view);
LinearLayout ll= createLinearLayout();
LinearLayout mainLayout = (LinearLayout) findViewById(R.id.activity_month_view);
mainLayout.addView(ll);
}
I think this should help
- add an empty linear layout in XML with some id.
- reference that layout in code
- add elements to that layout dynamically
Hey was just checking your code. Its working perfectly now just try this method.
public LinearLayout createLinearLayout(){
TextView tv_day = new TextView(this);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
tv_day.setLayoutParams(layoutParams);
tv_day.setGravity(Gravity.CENTER);
tv_day.setText("27");
LinearLayout ll_horizontal = new LinearLayout(getBaseContext());
LinearLayout.LayoutParams ll_horizontal_params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT);
ll_horizontal.setLayoutParams(ll_horizontal_params);
ll_horizontal.setOrientation(LinearLayout.HORIZONTAL);
ll_horizontal.addView(tv_day);
return ll_horizontal;
}
As per my requirement, i should give the orientation in horizontal only, if i give 3 sentences in 3 text views, if there is no space for third sentence then it should come in the next line in the first position ...
public class MainActivity extends Activity {
private LinearLayout layout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById();
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(10, 15, 10, 10);
layout.setOrientation(LinearLayout.HORIZONTAL);
android.view.ViewGroup.LayoutParams params;
TextView tvTextsecond = new TextView(this);
tvTextsecond.setText("Heywhatrudoingtoday");
tvTextsecond.setLayoutParams(layoutParams);
tvTextsecond.setBackgroundColor(Color.RED);
tvTextsecond.setTextColor(Color.WHITE);
TextView tvTextthird = new TextView(this);
tvTextthird.setText("Haiitssundaytowork");
tvTextthird.setLayoutParams(layoutParams);
tvTextthird.setBackgroundColor(Color.BLUE);
tvTextthird.setTextColor(Color.WHITE);
TextView tvTextfourth = new TextView(this);
tvTextfourth.setText("Owebullshitruuselessfellow");
tvTextfourth.setLayoutParams(layoutParams);
tvTextfourth.setBackgroundColor(Color.YELLOW);
tvTextfourth.setTextColor(Color.WHITE);
layout.addView(tvTextsecond);
layout.addView(tvTextthird);
layout.addView(tvTextfourth);
}
private void findViewById() {
layout = (LinearLayout) findViewById(R.id.flowLayout);
}
}
Linear Layout doesn't behave that way. If there is no space, it would go out of your display area. So, for your requirement, you can't use Linear Layout here.
I am creating a dynamic interface based on a string from sharedpreferences.
Heres my code
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
CreateInterface();
}//End-OnCreate
public void CreateInterface()
{
ScrollView sv = new ScrollView(this);
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
TableLayout tl = new TableLayout(this);
TableRow[] tr = null;
// Here is a loop that creates tablerow, create button in that, and add tablerow to tablelayout tl. This part is irrelevant couse it works perfectly.
ll.addView(tl);
sv.addView(ll);
setContentView(sv);
}
Now, i want to change the background color of the screen. How would i go about doing that?
ll.setBackgroundColor() should does the job.
Set ScrollView or LinearLayout Background Color using below method.
sv.setBackgroundColor(); or ll.setBackgroundColor();
Get Color string using getResources().getColor(R.color.yourColorID);
I'm trying to create a View dynamically (on click). Any person have any idea why this does not work. It just opens a blank (BLACK) screen. When i click back it moves to previous screen as well. And i need to know the way i'm trying to set the team is correct.
public class Details extends Activity {
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
//setTheme(android.R.style.Theme_Dialog);
TextView label = new TextView(this);
label.setText("Hello This text");
label.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
label.setTextSize(20);
label.setGravity(Gravity.CENTER);
TableRow tr = new TableRow(this);
tr.addView(label);
TableLayout tl = new TableLayout(this);
tl.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
tl.setGravity(Gravity.CENTER);
tl.addView(tr);
ScrollView sv = new ScrollView(this);
sv.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
sv.addView(tl);
setContentView(sv);
}
}
There is an msg in LogCat as following
couldn't save which view has focus because the focused view ##### has no id
Well one obvious thing is that you are using generic LayoutParams, not the correct parameters for the layout manager. For example you are not using a TableLayout.LayoutParams for the TextView so you are not actually telling it how to layout the text view within the table structure.
I also suggest using hierarchyviewer to look at what is going on with your view hierarchy.
Is the activity declared in the Manifest.xml?
You must to put
#Override
I had the similar problem
Here is my code:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
context = this;
AlertDialog alertChoice = new AlertDialog.Builder(context).create();
alertChoice.setTitle("Title");
alertChoice.setView(ViewDialogScreen("Test"));
alertChoice.show();
}
private View ViewDialogScreen(String strText) {
LinearLayout llay = new LinearLayout(context);
llay.setLayoutParams(new LayoutParams(320, 400));
TextView tv = new TextView(context);
tv.setText(strText);
llay.addView(tv);
return llay;
}
I got the output like the above.
I need to show the AlertDialog in full screen / 95% of the Screen size.
I need to handle more fields in the Dialog.
How do I enable the HorizontalScrollview in the AlertDialog?
to get the scrolling behaviour, add a surrounding ScrollView to your layout, which would make your ViewDialogScreen method to this:
private View ViewDialogScreen(String strText) {
ScrollView scroll = new ScrollView(context);
scroll.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
LinearLayout llay = new LinearLayout(context);
llay.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
TextView tv = new TextView(context);
tv.setText(strText);
scroll.addView(llay);
llay.addView(tv);
return scroll;
}
Now try adding some more fields and it should scroll.
I am not sure this but you can set your own layout for dialog. Refer my answer Android: Dialog dismisses without calling dismiss
If you want to customize an AlertDialog you need to create a Custom Dialog.