Question

我正在使用spinner，我想知道如何从item spinner中image button出现protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_up); spinnerListener(); St = (Spinner) findViewById(R.id.Namess); imageButton01 = (ImageButton) findViewById(R.id.ImageButton1); } private void spinnerListener() { ArrayList<Name> players = List_content.ENTRY_LIST_PLAYERS; final ArrayAdapter<String> adapter=new ArrayAdapter<String>(Line_up.this, android.R.layout.simple_spinner_item); {for (Name p : players){adapter.add(p.f_name);}}; playerss.setAdapter(adapter); playerss.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView<?> av, View v, int position, long itemId) { } @Override public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } }); } public void goalkeeper(View v){ st.performClick(); }图片使用字符串作为值。< / p>

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Answer 1

行。这就是诀窍：

单击ImageButton时，只需要在微调器对象上调用performClick()。

int[] pictureIds = {
        R.drawable.picture1,
//add as many picture IDs as you want
        R.drawable.picture2
}

imageButton.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        spinner.performClick();

    }
});

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

    @Override
    public void onItemSelected(AdapterView<?> arg0, View arg1,
            int position, long arg3) {
            imageButton.setImageResource(pictureIds[position]);             
    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub

    }
});

不要忘记设置微调器适配器，就像在问题中正确设置一样。

从微调器更改图像按钮

1 个答案: