Welcome to WuJiGu Developer Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.6k views
in Technique[技术] by (71.8m points)

android - Spinner item gets automatically selected upon entering activity. How do I avoid this?

I have a spinner in my Android app, and its onItemSelected() event automatically gets triggered upon entering the activity.

How do I avoid this?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

We can use a flag, and just enable it when the spinner is really touched.

private boolean isSpinnerTouched = false; 

spinner.setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                isSpinnerTouched = true;
                return false;
            }
        });
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
                @Override
                public void onItemSelected(AdapterView<?> adapter, View arg1,
                        int arg2, long arg3) {
                    if (!isSpinnerTouched) return;
                    // do what you want 
                    }
        });

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to WuJiGu Developer Q&A Community for programmer and developer-Open, Learning and Share
...