android.widget.GridView#INVALID_POSITION源码实例Demo

下面列出了android.widget.GridView#INVALID_POSITION 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： DragGridView 文件： DragGridView.java

/**
 * 触摸移动时，window更新
 *
 * @param ev
 */
private void updateWindow(MotionEvent ev) {
    if (mode == MODE_DRAG) {
        float x = ev.getRawX() - mX;
        float y = ev.getRawY() - mY;
        if (layoutParams != null) {
            layoutParams.x = (int) x;
            layoutParams.y = (int) y;
            mWindowManager.updateViewLayout(dragView, layoutParams);
        }
        float mx = ev.getX();
        float my = ev.getY();
        int dropPosition = pointToPosition((int) mx, (int) my);
        Log.i(TAG, "dropPosition : " + dropPosition + " , tempPosition : " + tempPosition);
        if (dropPosition == tempPosition || dropPosition == GridView.INVALID_POSITION) {
            return;
        }
        itemMove(dropPosition);
    }
}

源代码2 项目： android-topeka 文件： SignInFragment.java

@Override
public void onCreate(Bundle savedInstanceState) {
    if (savedInstanceState != null) {
        final int savedAvatarIndex = savedInstanceState.getInt(KEY_SELECTED_AVATAR_INDEX);
        if (savedAvatarIndex != GridView.INVALID_POSITION) {
            mSelectedAvatar = Avatar.values()[savedAvatarIndex];
        }
    }
    super.onCreate(savedInstanceState);
}

源代码3 项目： DragGridView 文件： DragGridView.java

/**
 * 手指抬起时，item下落
 */
private void itemDrop() {
    if (tempPosition == position || tempPosition == GridView.INVALID_POSITION) {
        getChildAt(position).setVisibility(VISIBLE);
    } else {
        ListAdapter adapter = getAdapter();
        if (adapter != null && adapter instanceof DragGridAdapter) {
            ((DragGridAdapter) adapter).exchangePosition(position, tempPosition, false);
        }
    }
}