如何在导航栏项片段内的gridview中添加图像

Question

我一直在尝试得到一堆图像像图库在我的导航栏项目片段。代码是这样的。

public Integer[] images = {
        R.drawable.base1, R.drawable.base2,
        R.drawable.base3, R.drawable.base2,
        R.drawable.base1, R.drawable.base3,

};

public ImageAdapter(Context c) {
    context = c;
}
@Override
public int getCount() {
    return images.length;
}

@Override
public Object getItem(int position) {
    return images(position);
}

private Object images(int position) {

    return images(position);
}


@Override
public long getItemId(int position) {
    return 0;
}

@Override
public View getView(int position, View ConvertView, ViewGroup parent) {
    ImageView imageview = new ImageView(context);
    imageview.setImageResource(images[position]);
    imageview.setScaleType(ImageView.ScaleType.CENTER_CROP);
    imageview.setLayoutParams(new GridView.LayoutParams(240, 240));
    return imageview;
}

    gridView.setAdapter(new ImageAdapter(this));`

注意：不要与图像r.drawable.base123混淆。我只是写了3把它写短了。我已经在我的工作区设置了20个图像。

Answer 1

尝试在onCreate方法之前声明“GridView”

private GridView mGridView;
@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
    setContentView(R.layout.yourLayout);
  mGridView = (GridView) findViewById(R.id.gridView);

 mGridView.setAdapter(new ImageAdapter(this));

}