Block all means to close an android application

Question

I\'m trying to develop an application for an android tablet.

This tablet will be shown to the public and they can touch it.

I want to block all means to clos

Answer 1

At first you need to add your application as home from your manifest

after add flag

getWindow().addFlags(WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY); //(dont forget to add flag before `setContentView`)

Disable device lock

  private void disableLock() {

        KeyguardManager keyguardManager = (KeyguardManager) getSystemService(MainActivity.KEYGUARD_SERVICE);
        KeyguardManager.KeyguardLock lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);
        lock.disableKeyguard();
    }

Disable home Long click

 @Override
    protected void onUserLeaveHint() {
        startActivity(new Intent(MainActivity.this,MainActivity.class));
        finish();
        super.onUserLeaveHint();
    }

After run you need to set your app to home application !!!