Floating Widget is a very useful part of a android application. Floating widget can display over apps menu and mobile phone screen and user can itself close if or open it. So in this tutorial we would going to create an Floating Widget which can show our apps and can be movable by user finger. The most common example for floating widget is Weather Showing apps and Facebook messenger app.
List of Java files in this project :
- MainActivity.java
- FloatingWidgetShowService.java
List of layout files in this project :
- activity_main.xml
- floating_widget_layout.xml
Contents in this project Create Floating Widget To Show Over Apps Menu Tutorial :
1. Add the SYSTEM_ALERT_WINDOW permission in your AndroidManifest.xml file.
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
2. Download The below two icons and paste them into your project’f drawable folder :
Start Coding :
Code for MainActivity.java file.
package com.android_examples.floatingwidget_android_examplescom;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.net.Uri;
import android.os.Build;
import android.view.View;
import android.content.Intent;
import android.provider.Settings;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
public static final int SYSTEM_ALERT_WINDOW_PERMISSION = 7;
Button button ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button)findViewById(R.id.buttonShow);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(this)) {
RuntimePermissionForUser();
}
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
startService(new Intent(MainActivity.this, FloatingWidgetShowService.class));
finish();
} else if (Settings.canDrawOverlays(MainActivity.this)) {
startService(new Intent(MainActivity.this, FloatingWidgetShowService.class));
finish();
} else {
RuntimePermissionForUser();
Toast.makeText(MainActivity.this, "System Alert Window Permission Is Required For Floating Widget.", Toast.LENGTH_LONG).show();
}
}
});
}
public void RuntimePermissionForUser() {
Intent PermissionIntent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(PermissionIntent, SYSTEM_ALERT_WINDOW_PERMISSION);
}
}
Code for activity_main.xml layout file.
<?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"
tools:context="com.android_examples.floatingwidget_android_examplescom.MainActivity"
android:layout_margin="10dp">
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Click Here To Show Floating Widget"
android:id="@+id/buttonShow"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
Code for FloatingWidgetShowService.java file.
package com.android_examples.floatingwidget_android_examplescom;
/**
* Created by Juned on 9/15/2017.
*/
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.graphics.PixelFormat;
import android.view.LayoutInflater;
import android.view.WindowManager;
import android.view.MotionEvent;
import android.view.View;
public class FloatingWidgetShowService extends Service{
WindowManager windowManager;
View floatingView, collapsedView, expandedView;
WindowManager.LayoutParams params ;
public FloatingWidgetShowService() {
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
floatingView = LayoutInflater.from(this).inflate(R.layout.floating_widget_layout, 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(floatingView, params);
expandedView = floatingView.findViewById(R.id.Layout_Expended);
collapsedView = floatingView.findViewById(R.id.Layout_Collapsed);
floatingView.findViewById(R.id.Widget_Close_Icon).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
stopSelf();
}
});
expandedView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
collapsedView.setVisibility(View.VISIBLE);
expandedView.setVisibility(View.GONE);
}
});
floatingView.findViewById(R.id.MainParentRelativeLayout).setOnTouchListener(new View.OnTouchListener() {
int X_Axis, Y_Axis;
float TouchX, TouchY;
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
X_Axis = params.x;
Y_Axis = params.y;
TouchX = event.getRawX();
TouchY = event.getRawY();
return true;
case MotionEvent.ACTION_UP:
collapsedView.setVisibility(View.GONE);
expandedView.setVisibility(View.VISIBLE);
return true;
case MotionEvent.ACTION_MOVE:
params.x = X_Axis + (int) (event.getRawX() - TouchX);
params.y = Y_Axis + (int) (event.getRawY() - TouchY);
windowManager.updateViewLayout(floatingView, params);
return true;
}
return false;
}
});
}
@Override
public void onDestroy() {
super.onDestroy();
if (floatingView != null) windowManager.removeView(floatingView);
}
}
Code for floating_widget_layout.xml layout file.
