2019年9月19日 星期四

[Android]ch5.11_Spinner清單元件元件1

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1 則留言:

  1. sp2=(Spinner)findViewById(R.id.spinner2);
    String colors[]={"設定顏色","紅色","綠色","藍色","紫色"};
    ArrayAdapter AA=new ArrayAdapter(MainActivity.this, android.R.layout.simple_spinner_item, colors);
    AA.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    sp2.setAdapter(AA);
    sp2.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView parent, View view,int position, long id) {
    switch(position){
    case 1:
    layout.setBackgroundColor(Color.RED);
    break;
    case 2:
    layout.setBackgroundColor(Color.GREEN);
    break;
    case 3:
    layout.setBackgroundColor(Color.BLUE);
    break;
    case 4:
    layout.setBackgroundColor(new Color().rgb(255, 0, 255));
    break;
    }
    Toast.makeText(MainActivity.this, parent.getItemAtPosition(position).toString()+" position="+position, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onNothingSelected(AdapterView parent) {
    // TODO Auto-generated method stub

    }
    });

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