Develop Reference

Unable to use intent extra from onStartCommand

I am trying to make a Android app with a service (Floating widget). Since I am not a pro-programmer, I did not use touch listener to change position of that widget for lot of reasons. But I want user to have options to change position (some preferred locations only) of that widget, and that options will be available in an activity which invoked the service. I am passing data as intent extra from my activity to service, which is to be obtained from service onStartCommand(). The problem I am facing now- I am unable to use data obtained from onStartCommand() in onCreate(). Seems the service is created before onStartCommand() is called and I am getting null pointer exception as some of my variables are not obtaining values from onStartCommand(). I have checked, that these variables are getting values when I use any clickable objects (e.g: press any button view in service), I used a dummy toast for this.
Please share your valuable opinion on how to overcome this problem.
public class MainFloatingWidget extends Service {
private WindowManager windowManager;
private View myFloatingView, myCollapsedView, myExpandedView;
private WindowManager.LayoutParams params;
private String position;
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
myFloatingView = LayoutInflater.from(this).inflate(R.layout.layout_main_floating_widget, null);
params = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
windowManager.addView(myFloatingView, params);
myCollapsedView = myFloatingView.findViewById(R.id.collapsedViewMainService);
myExpandedView = myFloatingView.findViewById(R.id.expandedViewMainService);
myCollapsedView.setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
myCollapsedView.setVisibility(View.GONE);
myExpandedView.setVisibility(View.VISIBLE);
return true;
}
});
myExpandedView.findViewById(R.id.buttonBack).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
myCollapsedView.setVisibility(View.VISIBLE);
myExpandedView.setVisibility(View.GONE);
}
});
myExpandedView.findViewById(R.id.buttonClose).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
windowManager.removeView(myFloatingView);
stopSelf();
}
});
if(position.equals("Right-Middle")){
params.gravity = Gravity.END | Gravity.CENTER;
}else if(position.equals("Right-Top")){
params.gravity = Gravity.END | Gravity.TOP;
}else if(position.equals("Right-Bottom")){
params.gravity = Gravity.END | Gravity.BOTTOM;
}else if(position.equals("Left-Middle")){
params.gravity = Gravity.START | Gravity.CENTER;
}else if(position.equals("Left-Top")){
params.gravity = Gravity.START | Gravity.TOP;
}else if(position.equals("Left-Bottom")){
params.gravity = Gravity.START | Gravity.BOTTOM;
}else{
params.gravity = Gravity.CENTER;
}
windowManager.updateViewLayout(myFloatingView, params);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
position = (String) intent.getExtras().get("POSITION");
return super.onStartCommand(intent, flags, startId);
}
#Override
public void onDestroy() {
super.onDestroy();
}
}

onCreate will call before onStartCommand and only call one time when Service init so you should move your code handle position to inside onStartCommand
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
params = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
position = (String) intent.getExtras().get("POSITION");
if(position.equals("Right-Middle")){
params.gravity = Gravity.END | Gravity.CENTER;
}else if(position.equals("Right-Top")){
params.gravity = Gravity.END | Gravity.TOP;
}else if(position.equals("Right-Bottom")){
params.gravity = Gravity.END | Gravity.BOTTOM;
}else if(position.equals("Left-Middle")){
params.gravity = Gravity.START | Gravity.CENTER;
}else if(position.equals("Left-Top")){
params.gravity = Gravity.START | Gravity.TOP;
}else if(position.equals("Left-Bottom")){
params.gravity = Gravity.START | Gravity.BOTTOM;
}else{
params.gravity = Gravity.CENTER;
}
windowManager.updateViewLayout(myFloatingView, params);
return super.onStartCommand(intent, flags, startId);
}

Window Manager click issue

Below code snippet only shows view but click on buttons not working. I have tried all solution but nothing seems to work. Another service have same code fragment with different layout works.
public int onStartCommand(final Intent intent, int flags, int startId) {
LayoutInflater inflater = (LayoutInflater)getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
if (inflater!=null)
v = inflater.inflate(R.layout.layout_accept_sos, null);
close = v.findViewById(R.id.close);
close.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
onDestroy();
}
});
getDirection = v.findViewById(R.id.getDirection);
getDirection.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent1=new Intent();
intent1.setAction("open_map");
sendBroadcast(intent1);
// onDestroy();
}
});
params = new WindowManager.LayoutParams(LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT, LayoutParams.FLAG_ALT_FOCUSABLE_IM | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL, PixelFormat.TRANSLUCENT);
params.gravity = Gravity.LEFT | Gravity.TOP;
params.x = 0;
params.y = 0;
wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
wm.addView(v, params);
return START_STICKY;
}

You need to use WindowManager.FLAG_NOT_FOCUSABLE to make it clickable.
params = new WindowManager.LayoutParams(LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
More description available at https://developer.android.com/reference/android/view/WindowManager.LayoutParams.html#FLAG_NOT_FOCUSABLE

How to create a fab like DU Speed Booster that keep running?

I want to create a floating action button that keep running like DU Speed Booster.
Something like iOS assistive touch.
Here is a picture.

For doing this you might need to have this permission
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
Create a Service and put this code inside OnCreate()
public class ChatHeadService extends Service {
private WindowManager windowManager;
private ImageView chatHead;
#Override public IBinder onBind(Intent intent) {
// Not used
return null;
}
#Override public void onCreate() {
super.onCreate();
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
chatHead = new ImageView(this);
chatHead.setImageResource(R.drawable.android_head);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.TOP | Gravity.LEFT;
params.x = 0;
params.y = 100;
windowManager.addView(chatHead, params);
}
#Override
public void onDestroy() {
super.onDestroy();
if (chatHead != null) windowManager.removeView(chatHead);
}
}
Start serviceusing below code
startService(new Intent(context, ChatHeadService.class));
Please refer this blog for complete example http://androidsrc.net/facebook-chat-like-floating-chat-heads/

How to create a Listener to detect which Activity is in the Foreground?

I've created a service that creates a chatHead (like Facebook Messenger).
However, I want it to have a listener that always checks which activity or application is in the foreground.
Here's my code-
public class ChatHeadService extends Service {
private WindowManager windowManager;
private ImageView chatHead;
protected String lastPackageName;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
ActivityManager am = (ActivityManager) this.getSystemService(ACTIVITY_SERVICE);
String foreground = am.getRunningTasks(1).get(0).topActivity.getPackageName();
if(foreground.equals("com.whatsapp"))
Toast.makeText(getApplicationContext(), foreground, Toast.LENGTH_SHORT).show();
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
chatHead = new ImageView(this);
chatHead.setImageResource(R.drawable.view_icon);
final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_PHONE,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.TOP | Gravity.START;
params.x = 0;
params.y = 100;
windowManager.addView(chatHead, params);
}
#Override
public void onDestroy() {
super.onDestroy();
if (chatHead != null) windowManager.removeView(chatHead);
if(lastPackageName!="com.whatsapp") windowManager.removeView(chatHead);
}
}
Using the ActivityManager, it does work when it is created. But I guess, since it is in the OnCreate method, it only gets the foreground activity when it is created.
What I need is to have a listener that would detect if the activity in the foreground is some specific activity (like in this case, Whatsapp).
How do I do that?
Thanks

Android: Overlay button onClick is never getting called

I have created an application that runs a service. The service basically has an Overlay button and the button on click does something. However, everytime, I click on the button, the application in the background of the button is responding. Please can someone help?
I have referred to link.
Here is my code:
Service code:
public class HUD extends Service implements OnTouchListener{
Button mButton;
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
String s;
s = "Hari";
return null;
}
#Override
public void onCreate() {
super.onCreate();
//mView = new HUDView(this);
mButton = new Button(this);
mButton.setText("Overlay button");
mButton.setOnTouchListener(this);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.RIGHT | Gravity.TOP;
params.setTitle("Load Average");
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mButton, params);
}
#Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(getBaseContext(),"onDestroy", Toast.LENGTH_LONG).show();
if(mButton != null)
{
((WindowManager) getSystemService(WINDOW_SERVICE)).removeView(mButton);
mButton = null;
}
}
#Override
public boolean onTouch(View v, MotionEvent event) {
Toast.makeText(this,"Overlay button event", Toast.LENGTH_SHORT).show();
return false;
}
}
The manifest has the following permission as well:
I tried changing the types to
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
Now, wherever I click, the touch event is getting called. Please can someone help me?

The problem is you are using WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY. I think since some Android 4.x it is not usable anymore. This is the way i realized an overlay Button:
public class OverlayButton extends Service implements OnTouchListener {
Button mButton;
WindowManager wm;
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
mButton = new Button(this);
mButton.setText("Overlay button");
mButton.setTextColor(Color.BLACK);
mButton.setOnTouchListener(this);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(150,
150, WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
| WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH, PixelFormat.TRANSLUCENT);
params.gravity = Gravity.LEFT | Gravity.CENTER;
wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mButton, params);
}
#Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(getBaseContext(), "onDestroy", Toast.LENGTH_LONG).show();
if (mButton != null) {
((WindowManager) getSystemService(WINDOW_SERVICE)).removeView(mButton);
mButton = null;
}
}
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
Log.d("OverlayButton onTouch", "touched the button");
stopSelf();
}
return true;
}
}
What i did is, i also gave him the ability to disappear again, if i touch him.
This is the way i let him appear:
getActivity().startService(new Intent(getActivity().getBaseContext(), OverlayButton.class));
but, if you start it from your Activity, just use:
startService(new Intent(this, OverlayButton.class));
And don't forget to set these in your manifest:
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
And inside the tags also don't forget:
<service android:name="OverlayButton" ></service>

When you use this WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH flag, it is telling the app to watch for all touches outside of your view.
Try using WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL instead. This will intercept touches only on your view.
To confirm, you need to be using WindowManager.LayoutParams.TYPE_SYSTEM_ALERT to make the view clickable.