//Don't get the ID name/string from the view ID.
//Instead use the
android:tag = "String"
//in your xml
//Then in Java use
View.getTag()
//To still get the ID name/string from view ID.
getResources().getResourceEntryName(View.getId())
public void onClick(View v) {
switch (v.getId()) {
case R.id.add_04:
Toast.makeText(MainActivity.this, "1", Toast.LENGTH_LONG).show();
break;
case R.id.add_05:
Toast.makeText(MainActivity.this, "2", Toast.LENGTH_LONG).show();
break;
}
}