CheckBox Chk = (CheckBox) findViewById(R.id.checkbox);
Chk.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
Toast.makeText(context, "Screen is turned ON. Broadcast Received", Toast.LENGTH_LONG).show();
}
}
});
Try this this will work fine