我有一個框架佈局,並希望根據數組的當前狀態更改背景圖像/顏色。我可以根據數組更改文本,因此瞭解如何執行該操作,但無法找到引用佈局的方法。使用Java更改框架佈局的背景圖像
我已經在創建後初始化框架佈局(li),但是當我嘗試更改後面的方法中的顏色時,出現錯誤「非靜態字段li'不能從靜態上下文中引用」 。
任何幫助,通過GridPagerAdapter構造讚賞
public class GridViewFragmentActivity extends FragmentActivity
{
FrameLayout li;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FrameLayout li =(FrameLayout) findViewById(R.id.framelayout);
final DotsPageIndicator mPageIndicator;
final GridViewPager mViewPager;
final String[][] data =
{
{ "Row 0, Col 0", "Row 0, Col 1", "Row 0, Col 2", "Row 0, Col 3" },
{ "Row 1, Col 0", "Row 1, Col 1", "Row 1, Col 2" },
{ "Row 2, Col 0", "Row 2, Col 1", "Row 2, Col 2" }
};
// Get UI references
mPageIndicator = (DotsPageIndicator) findViewById(R.id.page_indicator);
mViewPager = (GridViewPager) findViewById(R.id.pager);
// Assigns an adapter to provide the content for this pager
mViewPager.setAdapter(new GridPagerAdapter(getFragmentManager(), data));
mPageIndicator.setPager(mViewPager);
}
private static final class GridPagerAdapter extends FragmentGridPagerAdapter {
String[][] mData;
private GridPagerAdapter(FragmentManager fm, String[][] data)
{
super(fm);
mData = data;
}
@Override
public Fragment getFragment(int row, int column)
{
String text = "CARD FRAGMENT";
if (row == 2 && column == 1)
{
text = "SIT UP";
li.setBackgroundColor(Color.parseColor("#FFFFFF"));
}
else
{
text = "PRESS UP";
li.setBackgroundColor(Color.parseColor("#FF0000"));
}
return (CardFragment.create(text, mData[row][column]));
}
@Override
public int getRowCount()
{
return mData.length;
}
@Override
public int getColumnCount(int row)
{
return mData[row].length;
}
}
}
http://stackoverflow.com/questions/2559527/non-static-variable-cannot-be-referenced-from-a-static-context – yosriz