Development issue/problem:
I have two activities: The first user clicks on the button that opens the second user. The process begins. The second action does all the work.
I’ll take the second one. The activity looks like the following, which lies within the inner class of onClickListener, and I tried to mention it explicitly with (FirstActivity.this,Simple.Class), but the same thing happens.
Intention test = new intention (arg0.getContext(),Simple.class) ;
startActivity(test) ;
On the emulator I can see the screen moving as if it were the 2nd screen. Calling for action, but all I get is a black screen, but nothing takes care of my layout. I looked at Logcat and saw some error messages in the wires. This is the onCreate function of my second activity, but I don’t get any results on screen or in logcat that show me that the log functions have been called :
publicly null and void onCreate(Bundle StoredState)
{
Log.d(SimpleActivity,OnCreate Started) ;
super.onCreate(savedState) ;
setContentView(R.layout.simple) ;
Log.d (SimpleActivity, OnCreate Ended);
}
Pay attention: In my above code I called the basic builder in OnCreate() with super.onCreate(savedState).
How can I solve this problem?
Solution 1:
What happened to me was I crushed the wrong OnCreate method. I have closed the public opCreate gaps (Bundle savedInstanceState, PersistableBundle persistentState) when I should close the protected opCreate gaps (@Nullable Bundle savedInstanceState). Maybe this will help somebody!
Solution 2:
It is possible that onCreate will not be called if the activity has never been destroyed,
if the activity has been suspended for any reason, it will not be re-created the next time it is initiated, but will continue….
At least that’s what I see in my code now…. The life cycle of activities seems to be a good logical explanation…. However, 99% of the time, I rely on the onCreate call when I launchActivitu, and it doesn’t let me down…..
Edit: And of course it’s because I didn’t call to the finish() when I finished the activity. Unknown.
Solution 3:
This is not related to this specific problem, but may also occur if the activity is not mentioned in the manifest).
Solution 4:
android: launchMode=singleTask remove from manifest
Solution No 5:
The super.onCreate (saveState) method must be called. Look at Dr. Activity.
public null and void onCreate(bundled savedState)
{
super.onCreate(savedState);
}
Solution No 6:
you must add @Override onCreate and super.onCreate()
Override
public void onCreate(Bundle savedState)
{
super.onCreate(savedState) ;
Log.d (SimpleActivity, OnCreate Started);
setContentView (R.layout.simple);
Log.d (SimpleActivity, OnCreate Ended);
}
Solution No 7:
Be careful if your method belongs to AppCompatActivity of Activity.
It depends on what you have implemented in your class.
If you want to add a lifecycle method or a transfer method, I recommend that you press
CTRL+O or select Code > Transfer Method, and you can see where the method is going.
Good luck!
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