Java 表达式 预期错误
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Expression Expected error
提问by Max zert
In Android Studio I want to a button to start a new Activity. I get an Expression Expected error. Where have I gone wrong?
在 Android Studio 中，我想要一个按钮来启动一个新的活动。我收到表达式预期错误。我哪里错了？
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button advanceToQuestionTwo = {Button};
Button loadNewActivity = (Button) findViewById(R.id.imageButton);
loadNewActivity.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this, Stundenplan.class);
startActivity(intent);
}
});
}
回答by Filipe Gon?alves
You must delete this line Button advanceToQuestionTwo = {Button};or complete it. You need to put (Button)and not {Button}. Then after that you should call findViewById( id of that button in the xml file).
您必须删除此行Button advanceToQuestionTwo = {Button};或完成它。你需要把(Button)而不是{Button}。然后你应该打电话给findViewById( id of that button in the xml file).
