android开发教程之实现listview下拉刷新和上拉刷新效果
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2021-01-20
10:11:48
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android开发教程之实现开发教程之实现listview下拉刷新和上拉刷新效果下拉刷新和上拉刷新效果
代码如下:
public class PullToLoadListView extends ListView implements OnScrollListener {
private static final String TAG = PullToLoadListView.class.getSimpleName();
private static final int STATE_NON = 0;
private static final int STATE_PULL_TO_REFRESH = 1;
private static final int STATE_RELEASE_TO_REFRESH = 2;
private static final int STATE_REFRESHING = 3;
private int state;
private int firstVisibleItem;
private int lastVisisibleItem;
private float prevY = 0;
private View headerView;
private View footerView;
// header widgets
private ProgressBar headerProgressBar;
private ImageView headerImageArrow;
private TextView headerText;
private RotateAnimation headerArrowAnim;
private RotateAnimation headerArrowReverseAnim;
// footer widgets
private ProgressBar footerProgressBar;
private TextView footerText;
private boolean headerIsHanding = false;
private boolean footerIsHanding = false;
private int headerHeight;
private int footerHeight;
private ResetAnimation resetAnim;
private OnLoadingListener onLoadingListener;
private OnScrollListener onScrollListener;
public PullToLoadListView(Context context) {
super(context);
init(context);
}
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