Develop Reference

How to make touch events through accessibilty service overlay?

I am currently working on an accessibility service, which has two views. A button and a simple colored view. The colored view appears/disappears when i touch the button.
This is the code for the service -
package com.hardik.accessibiltyservicetest;
import android.accessibilityservice.AccessibilityService;
import android.accessibilityservice.FingerprintGestureController;
import android.graphics.PixelFormat;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import in.championswimmer.sfg.lib.SimpleFingerGestures;
public class Service extends AccessibilityService {
FrameLayout mLayout;
WindowManager.LayoutParams lp;
LayoutInflater inflater;
WindowManager wm;
#Override
public void onAccessibilityEvent(AccessibilityEvent event) {
}
#Override
public void onInterrupt() {
}
#Override
protected void onServiceConnected() {
// Create an overlay and display the action bar
wm = (WindowManager) getSystemService(WINDOW_SERVICE);
mLayout = new FrameLayout(this);
lp = new WindowManager.LayoutParams();
lp.type = WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY;
lp.format = PixelFormat.TRANSLUCENT;
lp.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
lp.width = WindowManager.LayoutParams.MATCH_PARENT;
lp.height = WindowManager.LayoutParams.MATCH_PARENT;
lp.gravity = Gravity.CENTER;
inflater = LayoutInflater.from(this);
inflater.inflate(R.layout.action_bar, mLayout);
wm.addView(mLayout, lp);
configurePowerButton();
}
boolean is = true;
private void configurePowerButton() {
SimpleFingerGestures obj = new SimpleFingerGestures();
obj.setDebug(true);
obj.setConsumeTouchEvents(true);
obj.setOnFingerGestureListener(new SimpleFingerGestures.OnFingerGestureListener() {
#Override
public boolean onSwipeUp(int i, long l, double v) {
Log.e("Swipe", "Up "+i);
return false;
}
#Override
public boolean onSwipeDown(int i, long l, double v) {
return false;
}
#Override
public boolean onSwipeLeft(int i, long l, double v) {
return false;
}
#Override
public boolean onSwipeRight(int i, long l, double v) {
return false;
}
#Override
public boolean onPinch(int i, long l, double v) {
return false;
}
#Override
public boolean onUnpinch(int i, long l, double v) {
return false;
}
#Override
public boolean onDoubleTap(int i) {
return false;
}
});
Button powerButton = mLayout.findViewById(R.id.power);
final View img = mLayout.findViewById(R.id.view);
powerButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//performGlobalAction(GLOBAL_ACTION_POWER_DIALOG);
Toast.makeText(getApplicationContext(), "yus", Toast.LENGTH_SHORT).show();
if (is){
is = false;
img.setVisibility(View.GONE);
}
else{
is =true;
img.setVisibility(View.VISIBLE);
}
}
});
img.setOnTouchListener(obj);
}
}
and this is the layout file -
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<Button
android:id="#+id/power"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="32dp"
android:background="#80FFFFFF"
android:text="Test"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="#+id/view"
android:layout_width="300dp"
android:layout_height="300dp"
android:background="#000000"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
the touch event and all works fine. but the problem is that with the current windowmanager parameter length and breadth set to match parent, the overlay blocks touch events to android ui itself, in other words no part of the android ui will respond unless the overlay is stopped, since the overlay consumes all the touch input. And the biggest setback is that i want the overlay to be just like i designed in the layout, and by setting any other length and breadth parameter the background touch problem starts, that is it once again starts consuming the touch events.
It isn't consuming all the touch events when i set the parameters to wrap content, but that doesn't give me the required ui of the service.
Also don't mind the use of gesture library, the code is a part of my personal project.
thanks in advance.

i found a fix. just make separate layouts for each element

I need popup message like map info window

I am unable to find the way to create a popup like info window in map . I have to use it to show the three button inside
Yes
later
No
these three options are clickable.
The pop up will show above three button in vertical manner in recycler view . I have created recycler view and pop up view but how to show it like a Tooltip with clickabe

you can use PopupWindow, its starting with API +23
<?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="wrap_content" android:background="#FFBBFFBB" android:orientation="vertical" > <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="10dp" android:text="Hello My Window" android:textSize="20sp" /> <Button android:id="#+id/button1" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="10dp" android:text="Button" android:textSize="20sp" /> </LinearLayout>
class
package com.example.hellopopupwindow;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.PopupWindow;
import android.widget.Toast;
public class MainActivity extends Activity {
private Context mContext = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = this;
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showPopupWindow(view);
}
});
}
private void showPopupWindow(View view) {
// A custom layout, as the display content
View contentView = LayoutInflater.from(mContext).inflate(
R.layout.pop_window, null);
// Set the button click event
Button button = (Button) contentView.findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(mContext, "button is pressed",
Toast.LENGTH_SHORT).show();
}
});
final PopupWindow popupWindow = new PopupWindow(contentView,
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);
popupWindow.setTouchable(true);
popupWindow.setTouchInterceptor(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
Log.i("mengdd", "onTouch : ");
return false;
// It returns true if the words, the touch event will be blocked
// PopupWindow onTouchEvent interception is not called, so click on the external area cannot be dismiss
}
});
// If you do not set the PopupWindow background, both the external region click or Back keys are not dismiss box
// I think there is a bug API
popupWindow.setBackgroundDrawable(getResources().getDrawable(
R.drawable.selectmenu_bg_downward));
// After setting the parameter to show
popupWindow.showAsDropDown(view);
}
}

Add a transparent fragment on top of an existing layout(android0

I am trying to create a sort of a transparent tutorial which appears only
the first time. This is the fragment i have created. How do I add this on top of an existing layout
here's the code for the fragment
import android.app.Fragment;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import in.webblue.nuclity.Activity.Logs.SaveLog;
import in.webblue.nuclity.R;
import static android.content.Context.MODE_PRIVATE;
/**
* Created by Akshay on 15-06-2017.
*/
public class TutorialFragment extends Fragment {
private String Class_Name = "TutorialFragment";
private boolean ranBefore;
View topLevelLayout1;
View topLevelLayout2;
View myView;
String methodName = "onCreateView";
public static TutorialFragment newInstance() {
TutorialFragment f = new TutorialFragment();
return f;
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
myView = inflater.inflate(R.layout.tutorial_layout, container,
false);
topLevelLayout1=myView.findViewById(R.id.tutorial1);
topLevelLayout2=myView.findViewById(R.id.tutorial2);
if (!isFirstTime()) {
topLevelLayout1.setVisibility(View.INVISIBLE);
topLevelLayout2.setVisibility(View.INVISIBLE);
}
return myView;
}
private boolean isFirstTime()
{
try {
SharedPreferences preferences =
this.getActivity().getSharedPreferences("RanBefore", MODE_PRIVATE);
boolean ranBefore = preferences.getBoolean("RanBefore", false);
if (!ranBefore) {
SharedPreferences.Editor editor = preferences.edit();
editor.putBoolean("RanBefore", true);
editor.commit();
topLevelLayout1.setVisibility(View.VISIBLE);
topLevelLayout2.setVisibility(View.INVISIBLE);
topLevelLayout1.setOnTouchListener(new
View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
topLevelLayout1.setVisibility(View.INVISIBLE);
topLevelLayout2.setVisibility(View.VISIBLE);
return false;
}
});
topLevelLayout2.setOnTouchListener(new
View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
topLevelLayout2.setVisibility(View.INVISIBLE);
return false;
}
});
}
}
catch (Exception e){
Log.e(getClass().getName(),"Method Name :"+methodName+ " "+ e.getStackTrace().toString());
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
SaveLog.saveLog(getContext(),Class_Name,methodName,e.toString());
}
}
return ranBefore;
}
}
I need to add this on top of an existing layout

I think FrameLayout is the way to go here.
The secret of FrameLayout is how it layouts its children. Although normally designed to contain one item, it will happily stack up other element on top of each other. Thus FrameLayout is essentially a way to manipulate the Z-order of views on the screen
Here a thread about what a FrameLayout can do:
what does FrameLayout do?
So your Layout would look something like this:
<FrameLayout>
<Fragment/>
<LinearLayout>
// here is your normal layout
</LinearLayout>
</>

You could do it the following way.
This is your activity on top of which you need to add the fragment.
<?xml version="1.0" encoding="utf-8"?>
<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"
android:orientation="vertical">
<LinearLayout
android:id="#+id/example_fragment_parent"
android:layout_width="match_parent"
android:layout_height="match_parent">
//YOUR LAYOUT
</LinearLayout>
<LinearLayout
android:id="#+id/example_fragment_parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:onClick="EndFragment">
/*THE FRAGMENT YOU WANT TO SHOW. THE LOGIC TO SHOW THIS FRAGMENT
ONLY ONCE WILL HAVE TO BE IN THE ACTIVITY ON TOP OF WHICH YOU ARE
SHOWING THIS FRAGMENT*/
<fragment
android:id="#+id/example_fragment"
android:name="com.example.ExampleFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
</RelativeLayout>
Now what you should do is show this fragment only once. The onClick method to hide this fragment is as follows:
public void EndFragment(View view) {
example_fragment_parent.setVisibility(View.GONE);
}
You need to find this fragment in the onCreate() of your activity like below:
LinearLayout example_fragment_parent =
(LinearLayout)findViewById(R.id.example_fragment_parent);

How to create a custom drag shadow?

What I want to achieve:
I want to create a drag and drop functionality in Android. I'd like to use a specific layout (different from the dragged object itself) as a drag shadow.
What result I'm getting instead:
Neither of my approaches works as expected - I end up with no visible drag shadow at all (although the target does receive the drop).
What I tried:
I tried
inflating the drag_item layout in the activity, then passing it as an argument to the shadow builder's constructor
and
inflating the drag_item layout in the shadow builder's onDrawShadow method, then drawing it on the canvas
Layouts:
My activity layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.app.DragDropTestActivity"
tools:ignore="MergeRootFrame">
<TextView
android:id="#+id/tvReceiver"
android:text="Drop here"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:id="#+id/btnDragged"
android:layout_height="wrap_content"
android:text="Drag me"
android:layout_width="match_parent"/>
</LinearLayout>
The layout I want to use as a drag shadow:
dragged_item.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Dragged Item"/>
</LinearLayout>
Source code:
Here's the code with both approaches (represented by 1, BuilderOne and 2, BuilderTwo, respectively):
package com.example.app;
import android.graphics.Canvas;
import android.graphics.Point;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
public class DragDropTestActivity extends ActionBarActivity
{
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drag_drop_test);
Button dragged = (Button) findViewById(R.id.btnDragged);
dragged.setOnTouchListener(
new View.OnTouchListener()
{
#Override
public boolean onTouch(View v, MotionEvent event)
{
if (event.getAction() != MotionEvent.ACTION_DOWN) {
return false;
}
LayoutInflater inflater = getLayoutInflater();
int approach = 1;
// both approaches fail
switch (approach) {
case 1: {
View draggedItem = inflater.inflate(R.layout.dragged_item, null);
BuilderOne builder = new BuilderOne(draggedItem);
v.startDrag(null, builder, null, 0);
break;
}
case 2: {
BuilderTwo builder = new BuilderTwo(inflater, v);
v.startDrag(null, builder, null, 0);
break;
}
}
return true;
}
});
}
My BuilderOne class:
public static class BuilderOne extends View.DragShadowBuilder
{
public BuilderOne(View view)
{
super(view);
}
#Override
public void onProvideShadowMetrics(Point shadowSize, Point shadowTouchPoint)
{
super.onProvideShadowMetrics(
shadowSize,
shadowTouchPoint);
}
}
And BuilderTwo class:
public static class BuilderTwo extends View.DragShadowBuilder
{
final LayoutInflater inflater;
public BuilderTwo(LayoutInflater inflater, View view)
{
super(view);
this.inflater = inflater;
}
#Override
public void onProvideShadowMetrics(Point shadowSize, Point shadowTouchPoint)
{
super.onProvideShadowMetrics(
shadowSize,
shadowTouchPoint);
}
#Override
public void onDrawShadow(Canvas canvas)
{
final View draggedItem = inflater.inflate(R.layout.dragged_item, null);
if (draggedItem != null) {
draggedItem.draw(canvas);
}
}
}
}
Question:
What do I do wrong?
Update:
Bounty added.

Kurty is correct in that you shouldn't need to subclass DragShadowBuilder in this case. My thought is that the view you're passing to the DragShadowBuilder doesn't actually exist in the layout, and therefore it doesn't render.
Rather than passing null as the second argument to inflater.inflate, try actually adding the inflated View to the hierarchy somewhere, and then passing it to a regular DragShadowBuilder:
View dragView = findViewById(R.id.dragged_item);
mDragShadowBuilder = new DragShadowBuilder(dragView);
v.startDrag(null, mDragShadowBuilder, null, 0);
EDIT
I'm aware that having the dragged_item view being rendered all the time isn't what you want, but if it works then at least we know where the problem is and can look for a solution to that instead!

Simply put it, you only need this:
private final class TouchListener implements View.OnTouchListener {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
v.startDrag(ClipData.newPlainText("", ""), new View.DragShadowBuilder(v), v, 0);
}
return true;
}
}
(You don't necessarily need the BuilderOne and BuilderTwo class)

Perform a drag operation from a PopupWindow in Android

I want to "Drag and Drop" items from a PopupWindow into the underlying View. The problem now is, when i dismiss the PopupWindow after a long click on an item, the underlying view does not receive any MotionEvents. This problem basically breaks down to delegating MotionEvents between views like in the drag-and-drop-between-views-issue as discussed here. A solution was proposed here but in my case this is not an option. I can't use an overlay view that lies on top of the PopupWindow, can I?
The code below is a simplified version of my problem. I basically have one button that brings up the PopupWindow. On a long click on that PopupWindow it gets dismissed. Now the MotionEvents should be send to the underlying view again, but that does not happen (as you can see in the log output).
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.View.OnTouchListener;
import android.widget.Button;
import android.widget.PopupWindow;
public class PopupWindowDragDropActivity extends Activity implements OnClickListener, OnTouchListener {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.b1).setOnClickListener(this);
findViewById(R.id.contents).setOnTouchListener(this);
}
#Override
public void onClick(View v) {
final PopupWindow p = new PopupWindow(this);
p.setContentView(new Button(this));
p.setHeight(100);
p.setWidth(100);
p.showAtLocation(findViewById(R.id.contents), Gravity.CENTER, 0, 0);
p.getContentView().setOnLongClickListener(new OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
v.post(new Runnable() {
#Override
public void run() {
p.dismiss();
}
});
return false;
}
});
}
#Override
public boolean onTouch(View v, MotionEvent event) {
Log.d("", "Action: " + event);
return true;
}
}
Here is the simple XML layout I use:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/contents" >
<Button
android:id="#+id/b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>