Android. Block phone on startup

Android. Block phone on startup

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Android. Block phone on startup
Tag : android , By : Ivan Belov
Date : November 25 2020, 07:22 PM

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Unable to start Activity at startup of phone in android

Tag : android , By : Bharath
Date : March 29 2020, 07:55 AM
I wish this help you Well first of all I hope you have made some errors when showing the code. For example I hope the file is actually called AndroidManifest.xml not manifest.java. Also I will really highly recommend you to call your classes camel-cased - such a little effort and it will make your code look better.
Now to the point - a problem I can see is that you do not declare a MAIN activity in your application like so:
<activity android:name=".hello">
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />

start Activity at startup of phone in android

Tag : android , By : Skee
Date : March 29 2020, 07:55 AM
seems to work fine Your XML should be stored in a file named AndroidManifest.xml, not manifest.java.
Another reason your code is not being run, might be that your App is installed on external storage (sdcard). BOOT_COMPLETE is sent to applications before external storage is mounted. So if application is installed to external storage it won't receive BOOT_COMPLETE broadcast message.

automatically run an application on Android phone startup

Tag : android , By : user180941
Date : March 29 2020, 07:55 AM
will be helpful for those in need I've done something similiar, but I was starting activity. Here is how I done it:
In Manifest:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
public class BootUpReceiver extends BroadcastReceiver {
    public void onReceive(Context context, Intent intent) {
        PendingIntent i = PendingIntent.getActivity(context, 0, new Intent(
        AlarmManager mgr = (AlarmManager) context
        mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 20000, i);

Starting an application/service on phone startup android (the correct way)

Tag : java , By : foxthrot
Date : March 29 2020, 07:55 AM
will help you In your manifest, add the RECEIVE_BOOT_COMPLETED permission.
<receiver android:name="your.package.name.BootCompletedReceiver" >
        <action android:name="android.intent.action.BOOT_COMPLETED" />
// if inside an activity or service, context can be "this"
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
prefs.edit().putBoolean("start_at_boot", true).commit();
public class BootCompletedReceiver extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
        boolean startAtBoot = prefs.getBoolean("start_at_boot", false) {
        if (startAtBoot) {
            // do something here

Android app keeps on crashing on startup in phone

Tag : java , By : Yst
Date : October 03 2020, 01:00 AM
wish help you to fix your issue I'm new at android studio(i'm a student)so i'm not very familiar so please bear with me, . I trying to do a simple text view and i got some problem when running the app on phone. The app will crash on startup everytime so i tried searching for solutions in the internet. , Issue is here:
txtOne = findViewById(R.id.txtid)
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