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Schedule Auto Wallpaper Changing In Background

how can we set a background task to android so that at given time an image is loaded from URL and set as wallpaper

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Answer

Use this code to set the wallpaper

WallpaperManager myWallpaperManager 
        = WallpaperManager.getInstance(getApplicationContext());
        try {
            myWallpaperManager.setResource(R.drawable.five);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

AND u need to addd this permission in your manfest

<uses-permission android:name="android.permission.SET_WALLPAPER" />

and you need JobDispatcher to runa task periodically.

    FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(this));
    Job myJob = dispatcher.newJobBuilder()
            .setService(MyJobService.class)

            .setTag("DAILY-MAIN-SYNC")
            .setRecurring(true)   //  setRecurring
            // don't persist past a device reboot
            .setLifetime(Lifetime.FOREVER)
            .setTrigger(Trigger.executionWindow(1, (int) TimeUnit.DAYS.toSeconds(1)))
            .setExtras(myExtrasBundle)
            .build();
    dispatcher.schedule(myJob);

this job will run each day

now create MyJobService extends JobService

in in the

@Override
    public boolean onStartJob(JobParameters job) { ....

write the code I wrote above.

Hope this will guide you to the right track.

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source: stackoverflow.com
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