If you run the following program on your smartphone, it will end as soon as it starts.There are no errors when coding, so I don't know where the problem is.If there is anyone who can tell us the cause, please take care of it.
MMonster is a class with instance fields of type String and type ImageView.
public class MainActivity extensions AppCompatActivity{
@ Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
// image acquisition
ImageView fImage= (ImageView) findViewById (R.id.fireI);
ImageView = (ImageView) findViewById (R.id.leafI);
ImageView wImage= (ImageView) findViewById (R.id.waterI);
// constructor configuration
Monster f = new Monster ("Human lizard", fImage);
Monster = new Monster ("Fushigidane", lImage);
Monster w = new Monster ("Zenigame", wImage);
}
findViewById() must not be done when declaring instance variables.
Modify the program to run in onCreate.
public class MainActivity extensions AppCompatActivity{
@ Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// image acquisition
ImageView fImage= (ImageView) findViewById (R.id.fireI);
ImageView = (ImageView) findViewById (R.id.leafI);
ImageView wImage= (ImageView) findViewById (R.id.waterI);
// constructor configuration
Monster f = new Monster ("Human lizard", fImage);
Monster = new Monster ("Fushigidane", lImage);
Monster w = new Monster ("Zenigame", wImage);
}
}
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