Develop Reference

How to add progress bar to an Imageview programmatically in android?

I have a class that extends Imageview. I need to add a progress bar to that ImageView programmatically.
This is my code:
public void viewPopup() {
DisplayMetrics metrics = new DisplayMetrics();
((Activity) getContext()).getWindowManager().getDefaultDisplay().getMetrics(metrics);
int width = metrics.widthPixels;
int height = metrics.heightPixels;
if(isFullScreen()) {
popupWindow = new PopupWindow(layout, (width), (height), true);
}else {
if (windowHeight != 0 || windowWidth != 0) {
width = windowWidth;
height = windowHeight;
popupWindow = new PopupWindow(layout, (width), (height), true);
} else {
popupWindow = new PopupWindow(layout, (int) (width * .8), (int) (height * .6), true);
}
}
popupWindow.showAtLocation(layout, Gravity.CENTER, 0, 0);
ImageView closeIcon = (ImageView) layout.findViewById(R.id.closeBtn);
if (isHideCloseIcon()) {
closeIcon.setVisibility(View.GONE);
}
closeIcon.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
popupWindow.dismiss();
}
});
if (isImageOnClickClose()) {
imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
popupWindow.dismiss();
}
});
}
dimBehind(popupWindow);
}
I need to initialize the progress bar after the metrics and it should disappear after the image loads (i.e inside the popup window).
I tried this for initialization :
progressBar = new ProgressBar(activity, null, android.R.attr.progressBarStyleHorizontal);
But I don't know how to proceed after this.

Relative position of Buttons in different devices

I have a problem in relation to the relative location of Buttons in different devices. I have done a short application to show it. The Button, in relation to a red point, behaves as desire when dealing with wide measures (coordinate x). However, I don’t know why the same Button is progressively scrolling down from the red point (coordinate y) as I choose a smaller device. I choose the right size of the image for the different devices and for both, wide and height, I also choose the relative measure of the screen:
rel_btn.width = 4*width/100;
rel_btn.height = 7*height/100;
I show you the code and the resulting screen of the xlarge screen in case someone can help me:
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//width and height of the screen
DisplayMetrics metrics = new DisplayMetrics();
WindowManager windowManager = (WindowManager) MainActivity.this.getSystemService(Context.WINDOW_SERVICE);
if (windowManager != null) {
windowManager.getDefaultDisplay().getMetrics(metrics);
}
int width = metrics.widthPixels;
int height = metrics.heightPixels;
RelativeLayout layout = (RelativeLayout) findViewById(R.id.test); // id del XML
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
rel_btn.width = 4*width/100; rel_btn.height = 7*height/100;
// x, y of the BUTTON
rel_btn.leftMargin = 15*width/100; rel_btn.topMargin = 66*height/100;
Button btnTag = new Button(this);
btnTag.setLayoutParams(rel_btn);
btnTag.setBackgroundColor(Color.TRANSPARENT);
btnTag.setId(0); // writes the ID
btnTag.setOnClickListener(prueba);
layout.addView(btnTag);
}
private View.OnClickListener prueba = new View.OnClickListener() {
#Override
public void onClick(View view) {
//width of the screen
DisplayMetrics metrics = new DisplayMetrics();
WindowManager windowManager = (WindowManager) MainActivity.this.getSystemService(Context.WINDOW_SERVICE);
if (windowManager != null) {
windowManager.getDefaultDisplay().getMetrics(metrics);
}
int width = metrics.widthPixels;
Button button = (Button) view;
GradientDrawable drawable = new GradientDrawable();
drawable.setShape(GradientDrawable.RECTANGLE);
drawable.setStroke(Math.round((float) (0.6*width/100)), Color.BLUE);
drawable.setColor(Color.TRANSPARENT);
button.setBackgroundDrawable(drawable);
}
};
}

PopupWindow shifts when it's child ListView grows

I am trying to display contents of a ListView in a PopupWindow that grows as the List is populated. It works fine except that the elements shift as the list grows until it stops adding new elements. Is there a way to keep the position of the window fixed as it grows downward on the screen? I am new to Android programming so any input is appreciated. Thanks!
private void initView(View v) {
LayoutInflater inflater = (LayoutInflater)
getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View popupView = inflater.inflate(R.layout.popup_layout, null);
DisplayMetrics displaymetrics = new DisplayMetrics();
getActivity().getWindowManager().getDefaultDisplay().
getMetrics(displaymetrics);
int width = (int) ((int)displaymetrics.widthPixels * 0.9);
popupWindow = new PopupWindow(popupView,width,
ViewGroup.LayoutParams.WRAP_CONTENT);
m = (MainActivity) getActivity();
m.layout_main.getForeground().setAlpha(220);
btnScan = (Button) popupView.findViewById(R.id.scan);
btncancel = (Button) popupView.findViewById(R.id.close);
popupWindow.setOutsideTouchable(false);
popupWindow.setFocusable(true);
int loc_int[] = new int[2];
if (v == null)
try
{
v.getLocationOnScreen(loc_int);
} catch (NullPointerException npe)
{
//when the view doesn't exist on screen anymore.
}
Rect location = new Rect();
location.left = loc_int[0];
location.top = loc_int[1] ;
location.right = location.left + v.getWidth()/2;
location.bottom = location.top - view2.getHeight()/2 ;
popupWindow.showAtLocation(view2, Gravity.CENTER,
view2.getWidth()/2, location.top);
popupWindow.showAsDropDown(view2);
listDevicesFound = (ListView) popupView.findViewById(R.id.devicelist);
btAdapter = BluetoothAdapter.getDefaultAdapter();
adtDevice = new ArrayAdapter<String>(getActivity(),R.layout.list_text,
lsDevice);
listDevicesFound.setAdapter(adtDevice);
listDevicesFound.setOnItemClickListener(new onIntemClick());
}

I ended up fixing the width and height of the window using a fraction of width and height obtained using:
DisplayMetrics metrics = this.getResources().getDisplayMetrics();
MyApplication.width = metrics.widthPixels;
MyApplication.height = metrics.heightPixels;
With a fixed height the PopupWindow no more shifts with new additions to the List.

How to center PopupWindow?

I created an Activity in which i add a button that throws a popup when is clicked. Here is the code of showPopup() method:
private void showPopup() {
LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.popup_layout, (ViewGroup) findViewById(R.id.popup_element), false);
final PopupWindow pwindo = new PopupWindow(layout, LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT, true);
Button btnAgree = (Button) layout.findViewById(R.id.ok);
btnAgree.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
pwindo.dismiss();
}
});
pwindo.showAtLocation(layout, Gravity.CENTER, 0, 0);
}
}
I would center it both vertically and orizzontally. I tried several ways that i see here on SO but none worked. Why i always get the popup window at the top of the screen?

you can use setHorizontalOffset:
ListPopupWindow popupWindow = new ListPopupWindow(this);
// Position
popupWindow.setAnchorView(btn);
popupWindow.setPromptPosition (ListPopupWindow.POSITION_PROMPT_ABOVE);
popupWindow.setHorizontalOffset((btn.layoutParams.width - popupWindow.getWidth())/2);

this code will show perfect popup in center of you specific view
// click event of specific view
#Override
public void onClick(View v) {
super.onClick(v);
if (v == lin_filterActionbar) {
PopupWindow popupwindow_obj; // create object
popupwindow_obj = dialog_AllergiesSelect(RR_HomeActivity.this,lin_filterActionbar);
popupwindow_obj.showAsDropDown(lin_filterActionbar);
}
}
private PopupWindow dialog_AllergiesSelect(Context context,LinearLayout lin) {
final PopupWindow dialog_AllergiesSelect = new PopupWindow(this);
View v = View.inflate(context, R.layout.dialog_filter_actionbar, null);
dialog_AllergiesSelect.setContentView(v);
dialog_AllergiesSelect.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
dialog_AllergiesSelect.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
dialog_AllergiesSelect.setFocusable(true);
// TextView lis_testSelection = (TextView) v.findViewById(R.id.dialogfilter_txt_filter);
// LinearLayout.LayoutParams lin_laLayoutParams = new LinearLayout.LayoutParams((int) (sunApplication.getDeviceWidth() - (sunApplication.getDeviceScale() * dialog_width_dvide_allerges_spinner_width)), (int) (sunApplication.getDeviceHeight() - (sunApplication.getDeviceScale() * dialog_width_dvide_allerges_height)));
// lis_testSelection.setLayoutParams(lin_laLayoutParams);
// Some offset to align the popup a bit to the right, and a bit down, relative to button's position.
int OFFSET_X = 0;
int OFFSET_Y = 0;
// Clear the default translucent background
dialog_AllergiesSelect.setBackgroundDrawable(new BitmapDrawable());
// Displaying the popup at the specified location, + offsets.
//dialog_AllergiesSelect.showAtLocation(v, Gravity.C, p.x + OFFSET_X, p.y + OFFSET_Y);
Rect location = locateView(lin);
dialog_AllergiesSelect.showAtLocation(v, Gravity.TOP|Gravity.CENTER, 0, location.bottom);
// Getting a reference to Close button, and close the popup when clicked.
return dialog_AllergiesSelect;
}
public static Rect locateView(View v)
{
int[] loc_int = new int[2];
if (v == null) return null;
try
{
v.getLocationOnScreen(loc_int);
} catch (NullPointerException npe)
{
//Happens when the view doesn't exist on screen anymore.
return null;
}
Rect location = new Rect();
location.left = loc_int[0];
location.top = loc_int[1];
location.right = location.left + v.getWidth();
location.bottom = location.top + v.getHeight();
return location;
}

Pop up android app

I have a pop up that displays an image upon clicking a button. I got to display the pop up but the image is so small and I want it to occupy the 90% of the screen and add a close button to it.
Here is my code:
PopupWindow popUp;
LinearLayout layout;
TextView tv;
LayoutParams params;
ImageView imageView;
boolean click = true;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bmi);
popUp = new PopupWindow(this);
layout = new LinearLayout(this);
tv = new TextView(this);
imageView = new ImageView(this);
imageView.setImageResource(R.drawable.animalbite);
WindowManager wm = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
int fullScreenWidth = display.getWidth();
int dialogWidth = (int) (fullScreenWidth * 0.9);
WindowManager.LayoutParams params = getWindow().getAttributes();
params.height = LayoutParams.WRAP_CONTENT;
params.width = dialogWidth;
getWindow().setAttributes(params);
imageView.setLayoutParams(params);
//tv.setText("Hi this is a sample text for popup window");
layout.addView(imageView, params);
popUp.setContentView(layout);
Button ViewBmi = (Button) findViewById(R.id.ViewBmi);
ViewBmi.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (click) {
popUp.showAtLocation(layout, Gravity.CENTER, 10 ,10);
click = false;
} else {
popUp.dismiss();
click = true;
}
}
});
}
Here is the display:
ANy ideas?

Try this...
PopupWindow popUp;
LinearLayout layout;
TextView tv;
LayoutParams params,params2;
ImageView imageView;
boolean click = true;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Display display = getWindowManager().getDefaultDisplay();
final int height = (display.getHeight()*90)/100;
final int width = (display.getWidth()*90)/100;
popUp = new PopupWindow(this);
layout = new LinearLayout(this);
tv = new TextView(this);
imageView = new ImageView(this);
imageView.setImageResource(R.drawable.ic_launcher);
params = new LayoutParams(width,height-50);
layout.setOrientation(LinearLayout.VERTICAL);
layout.addView(imageView, params);
Button button = new Button(this);
button.setText("Close");
params2 = new LayoutParams(100,50);
layout.addView(button,params2);
popUp.setContentView(layout);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
popUp.dismiss();
click = true;
}
});
Button ViewBmi = (Button) findViewById(R.id.button1);
ViewBmi.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (click) {
popUp.showAtLocation(layout, Gravity.CENTER, 10, 10);
popUp.update(10, 20, width,height);
click = false;
} else {
popUp.dismiss();
click = true;
}
}
});
}
Try This....
Button button = new Button(this);
button.setText("Close");
params2 = new LayoutParams(100,50);
--->params2.setMargins(100, 0, 0, 0);
layout.addView(button,params2);

I'd do it like this:
height = (int)(0.9*getWindow().getWindowManager().getDefaultDisplay().getHeight());
params.height = height;

Try:
params = new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
...
layout.addView(imageView, params);
This way the ImageView will be as wide, as possible.
If the underlying dialog is not wide enough, then you can set it's width also full screen:
WindowManager.LayoutParams params = getWindow().getAttributes();
params.height = LayoutParams.WRAP_CONTENT;
params.width = LayoutParams.MATCH_PARENT;
getWindow().setAttributes(params);
Or if you want it to be for example 90% of the screen, then:
// get the width of the whole screen
Display display = getWindow().getDefaultDisplay();
int fullScreenWidth = display.getWidth();
//then set 90% of it to the width of the Dialog:
int dialogWidth = (int) fullScreenWidth * 0.9);
WindowManager.LayoutParams params = getWindow().getAttributes();
params.height = LayoutParams.WRAP_CONTENT;
params.width = dialogWidth;
getWindow().setAttributes(params);