Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you about how to achieve a mobile suspension window in Android. The article is rich in content and analyzes and describes for you from a professional point of view. I hope you can get something after reading this article.

First of all, let's build a windowmangerdemo project.

Add a button button to activity_main

Then add two layout files, window_small.xml and window_big.xml, to the layout Layout, which are used to click on the small window and expand the large window.

Window_small.xml

We directly add a relative layout management clamor to the linear layout management. Then set up the background picture.

FloatWindowSmallView

Our floatWindowSmallView inherits from LinearLayout

Rewrite the onTouchEvent event, which we use to click to move and expand our suspension box at any time

Public boolean onTouchEvent (MotionEvent event) {

Switch (event.getAction ()) {

Case MotionEvent.ACTION_DOWN:

/ / record the necessary data when the finger is pressed, even if the coordinate value needs to be subtracted from the height of the status bar.

XInView = event.getX ()

YInView = event.getY ()

XDownInScreen = event.getRawX ()

YDownInScreen = event.getRawY ()-getStatusBarHeight ()

XInScreen = event.getRawX ()

YInScreen = event.getRawY ()-getStatusBarHeight ()

Break

Case MotionEvent.ACTION_MOVE:

XInScreen = event.getRawX ()

YInScreen = event.getRawY ()-getStatusBarHeight ()

/ / update the position of the small suspension window as the finger moves

UpdateViewPosition ()

Break

Case MotionEvent.ACTION_UP:

/ / if xDownInScreen and xInScreen are equal and yDownInScreen and yInScreen are equal when the finger leaves the screen, the click event is considered to have been triggered.

If (xDownInScreen = = xInScreen & & yDownInScreen = = yInScreen) {

OpenBigWindow ()

}

Break

Default:

Break

}

Return true

}

Window_big.xml

We set up three vertical ImageButton to represent the large form that is expanded after clicking on the small form.

FloatWindowBigView

The code is relatively simple, just write the corresponding event directly.

Public class FloatWindowBigView extends LinearLayout {

Public static int viewWidth

Public static int viewHeight

Public FloatWindowBigView (final Context context) {

Super (context)

LayoutInflater.from (context) .propagate (R.layout.window_big, this)

View view = findViewById (R.id.big_window_layout)

/ / viewWidth = view.getLayoutParams () .width

/ / viewHeight = view.getLayoutParams () .height

ViewWidth= 120

ViewHeight = 370

ImageButton imgbig = (ImageButton) findViewById (R.id.imgbig)

ImageButton imgcamera = findViewById (R.id.imgcamera)

ImageButton imgvoice = findViewById (R.id.imgvoice)

Imgcamera.setOnClickListener (new OnClickListener () {

@ Override

Public void onClick (View v) {

Toast.makeText (context, "clicked on the camera", Toast.LENGTH_SHORT) .show ()

}

});

Imgvoice.setOnClickListener (new OnClickListener () {

@ Override

Public void onClick (View v) {

Toast.makeText (context, "clicked speech recognition", Toast.LENGTH_SHORT). Show ()

}

});

Imgbig.setOnClickListener (new OnClickListener () {

@ Override

Public void onClick (View v) {

/ / when you click back, remove the large suspension window and create a small suspension window

MyWindowManager.removeBigWindow (context)

MyWindowManager.createSmallWindow (context)

}

});

}

}

MyWindowManager

This class is the event class that we manage the size of the suspension box, including closing the small suspension window, expanding the large suspension window, etc.

We put the parameters of the size and size of the suspension penetration corresponding to different LayoutParams, all of which are processed here.

FloatWindow

Make a floatWindow that inherits from Service

Use Handler and Time controls to refresh whether the suspended window always exists.

/ * *

* determine whether the current interface is a code scanning interface.

, /

Private boolean isForeground (String [] classNames) {

If (classNames.length 0) {

ComponentName cpn = list.get (0). TopActivity

For (String className: classNames) {

If (className.equals (cpn.getClassName () {

Return true

}

}

}

Return false

} class RefreshTask extends TimerTask {

@ Override

Public void run () {

/ / if the current interface is the one to be displayed, and there is no suspended window, a suspended window is created.

If (isForeground (activityname) & &! MyWindowManager.isWindowShowing ()) {

Handler.post (new Runnable () {

@ Override

Public void run () {

MyWindowManager.createSmallWindow (getApplicationContext ())

}

});

}

/ / the interface to be displayed in the current interface, and a suspended window is displayed, then remove the suspended window.

Else if (! isForeground (activityname) & & MyWindowManager.isWindowShowing ()) {

Handler.post (new Runnable () {

@ Override

Public void run () {

MyWindowManager.removeSmallWindow (getApplicationContext ())

MyWindowManager.removeBigWindow (getApplicationContext ())

}

});

}

/ / the current interface is the interface to be displayed, and if a suspended window is displayed, the memory data will be updated.

Else if (isForeground (activityname) & & MyWindowManager.isWindowShowing ()) {

Handler.post (new Runnable () {

@ Override

Public void run () {

MyWindowManager.updateUsedPercent (getApplicationContext ())

}

});

}

}

} the above is how to achieve a mobile suspension window in the Android shared by the editor. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.